なんかもうめっちゃ変えた

31 files changed, 1561 insertions, 1293 deletions

diff --git a/packages/backend/src/server/api/endpoints/notes/children.ts b/packages/backend/src/server/api/endpoints/notes/children.ts
index efc109105c..86f90e049f 100644
--- a/packages/backend/src/server/api/endpoints/notes/children.ts
+++ b/packages/backend/src/server/api/endpoints/notes/children.ts
@@ -1,10 +1,10 @@
 import { Brackets } from 'typeorm';
-import { Notes } from '@/models/index.js';
-import define from '../../define.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -34,38 +34,49 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId)
-		.andWhere(new Brackets(qb => { qb
-			.where('note.replyId = :noteId', { noteId: ps.noteId })
-			.orWhere(new Brackets(qb => { qb
-				.where('note.renoteId = :noteId', { noteId: ps.noteId })
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
+
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
 				.andWhere(new Brackets(qb => { qb
-					.where('note.text IS NOT NULL')
-					.orWhere('note.fileIds != \'{}\'')
-					.orWhere('note.hasPoll = TRUE');
-				}));
-			}));
-		}))
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+					.where('note.replyId = :noteId', { noteId: ps.noteId })
+					.orWhere(new Brackets(qb => { qb
+						.where('note.renoteId = :noteId', { noteId: ps.noteId })
+						.andWhere(new Brackets(qb => { qb
+							.where('note.text IS NOT NULL')
+							.orWhere('note.fileIds != \'{}\'')
+							.orWhere('note.hasPoll = TRUE');
+						}));
+					}));
+				}))
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	generateVisibilityQuery(query, user);
-	if (user) {
-		generateMutedUserQuery(query, user);
-		generateBlockedUserQuery(query, user);
-	}
+			this.queryService.generateVisibilityQuery(query, me);
+			if (me) {
+				this.queryService.generateMutedUserQuery(query, me);
+				this.queryService.generateBlockedUserQuery(query, me);
+			}
 
-	const notes = await query.take(ps.limit).getMany();
+			const notes = await query.take(ps.limit).getMany();
 
-	return await Notes.packMany(notes, user);
-});
+			return await this.noteEntityService.packMany(notes, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/clips.ts b/packages/backend/src/server/api/endpoints/notes/clips.ts
index e79f8563e8..7d893f32a1 100644
--- a/packages/backend/src/server/api/endpoints/notes/clips.ts
+++ b/packages/backend/src/server/api/endpoints/notes/clips.ts
@@ -1,8 +1,11 @@
 import { In } from 'typeorm';
-import { ClipNotes, Clips } from '@/models/index.js';
-import define from '../../define.js';
-import { getNote } from '../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { ClipNotesRepository, ClipsRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { ClipEntityService } from '@/core/entities/ClipEntityService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['clips', 'notes'],
@@ -37,20 +40,34 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, me) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.clipsRepository)
+		private clipsRepository: ClipsRepository,
 
-	const clipNotes = await ClipNotes.findBy({
-		noteId: note.id,
-	});
+		@Inject(DI.clipNotesRepository)
+		private clipNotesRepository: ClipNotesRepository,
 
-	const clips = await Clips.findBy({
-		id: In(clipNotes.map(x => x.clipId)),
-		isPublic: true,
-	});
+		private clipEntityService: ClipEntityService,
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	return await Promise.all(clips.map(x => Clips.pack(x)));
-});
+			const clipNotes = await this.clipNotesRepository.findBy({
+				noteId: note.id,
+			});
+
+			const clips = await this.clipsRepository.findBy({
+				id: In(clipNotes.map(x => x.clipId)),
+				isPublic: true,
+			});
+
+			return await Promise.all(clips.map(x => this.clipEntityService.pack(x)));
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/conversation.ts b/packages/backend/src/server/api/endpoints/notes/conversation.ts
index b731d18248..2f8324ed62 100644
--- a/packages/backend/src/server/api/endpoints/notes/conversation.ts
+++ b/packages/backend/src/server/api/endpoints/notes/conversation.ts
@@ -1,8 +1,11 @@
-import { Note } from '@/models/entities/note.js';
-import { Notes } from '@/models/index.js';
-import define from '../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import type { Note } from '@/models/entities/Note.js';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
-import { getNote } from '../../common/getters.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -39,36 +42,47 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	const conversation: Note[] = [];
-	let i = 0;
+		private noteEntityService: NoteEntityService,
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	async function get(id: any) {
-		i++;
-		const p = await Notes.findOneBy({ id });
-		if (p == null) return;
+			const conversation: Note[] = [];
+			let i = 0;
 
-		if (i > ps.offset!) {
-			conversation.push(p);
-		}
+			const get = async (id: any) => {
+				i++;
+				const p = await this.notesRepository.findOneBy({ id });
+				if (p == null) return;
 
-		if (conversation.length === ps.limit) {
-			return;
-		}
+				if (i > ps.offset!) {
+					conversation.push(p);
+				}
 
-		if (p.replyId) {
-			await get(p.replyId);
-		}
-	}
+				if (conversation.length === ps.limit) {
+					return;
+				}
 
-	if (note.replyId) {
-		await get(note.replyId);
-	}
+				if (p.replyId) {
+					await get(p.replyId);
+				}
+			};
 
-	return await Notes.packMany(conversation, user);
-});
+			if (note.replyId) {
+				await get(note.replyId);
+			}
+
+			return await this.noteEntityService.packMany(conversation, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/create.ts b/packages/backend/src/server/api/endpoints/notes/create.ts
index a133294169..30b7a889fc 100644
--- a/packages/backend/src/server/api/endpoints/notes/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/create.ts
@@ -1,15 +1,18 @@
 import ms from 'ms';
 import { In } from 'typeorm';
-import create from '@/services/note/create.js';
-import { User } from '@/models/entities/user.js';
-import { Users, DriveFiles, Notes, Channels, Blockings } from '@/models/index.js';
-import { DriveFile } from '@/models/entities/drive-file.js';
-import { Note } from '@/models/entities/note.js';
-import { Channel } from '@/models/entities/channel.js';
+import { Inject, Injectable } from '@nestjs/common';
+import type { User } from '@/models/entities/User.js';
+import { UsersRepository, NotesRepository, BlockingsRepository, DriveFilesRepository, ChannelsRepository } from '@/models/index.js';
+import type { DriveFile } from '@/models/entities/DriveFile.js';
+import type { Note } from '@/models/entities/Note.js';
+import type { Channel } from '@/models/entities/Channel.js';
 import { MAX_NOTE_TEXT_LENGTH } from '@/const.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { NoteCreateService } from '@/core/NoteCreateService.js';
+import { DI } from '@/di-symbols.js';
 import { noteVisibilities } from '../../../../types.js';
 import { ApiError } from '../../error.js';
-import define from '../../define.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -161,115 +164,138 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	let visibleUsers: User[] = [];
-	if (ps.visibleUserIds) {
-		visibleUsers = await Users.findBy({
-			id: In(ps.visibleUserIds),
-		});
-	}
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
 
-	let files: DriveFile[] = [];
-	const fileIds = ps.fileIds != null ? ps.fileIds : ps.mediaIds != null ? ps.mediaIds : null;
-	if (fileIds != null) {
-		files = await DriveFiles.createQueryBuilder('file')
-			.where('file.userId = :userId AND file.id IN (:...fileIds)', {
-				userId: user.id,
-				fileIds,
-			})
-			.orderBy('array_position(ARRAY[:...fileIds], "id"::text)')
-			.setParameters({ fileIds })
-			.getMany();
-	}
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	let renote: Note | null = null;
-	if (ps.renoteId != null) {
-		// Fetch renote to note
-		renote = await Notes.findOneBy({ id: ps.renoteId });
+		@Inject(DI.blockingsRepository)
+		private blockingsRepository: BlockingsRepository,
 
-		if (renote == null) {
-			throw new ApiError(meta.errors.noSuchRenoteTarget);
-		} else if (renote.renoteId && !renote.text && !renote.fileIds && !renote.hasPoll) {
-			throw new ApiError(meta.errors.cannotReRenote);
-		}
+		@Inject(DI.driveFilesRepository)
+		private driveFilesRepository: DriveFilesRepository,
 
-		// Check blocking
-		if (renote.userId !== user.id) {
-			const block = await Blockings.findOneBy({
-				blockerId: renote.userId,
-				blockeeId: user.id,
-			});
-			if (block) {
-				throw new ApiError(meta.errors.youHaveBeenBlocked);
+		@Inject(DI.channelsRepository)
+		private channelsRepository: ChannelsRepository,
+
+		private noteEntityService: NoteEntityService,
+		private noteCreateService: NoteCreateService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			let visibleUsers: User[] = [];
+			if (ps.visibleUserIds) {
+				visibleUsers = await this.usersRepository.findBy({
+					id: In(ps.visibleUserIds),
+				});
 			}
-		}
-	}
 
-	let reply: Note | null = null;
-	if (ps.replyId != null) {
-		// Fetch reply
-		reply = await Notes.findOneBy({ id: ps.replyId });
+			let files: DriveFile[] = [];
+			const fileIds = ps.fileIds != null ? ps.fileIds : ps.mediaIds != null ? ps.mediaIds : null;
+			if (fileIds != null) {
+				files = await this.driveFilesRepository.createQueryBuilder('file')
+					.where('file.userId = :userId AND file.id IN (:...fileIds)', {
+						userId: me.id,
+						fileIds,
+					})
+					.orderBy('array_position(ARRAY[:...fileIds], "id"::text)')
+					.setParameters({ fileIds })
+					.getMany();
+			}
 
-		if (reply == null) {
-			throw new ApiError(meta.errors.noSuchReplyTarget);
-		} else if (reply.renoteId && !reply.text && !reply.fileIds && !reply.hasPoll) {
-			throw new ApiError(meta.errors.cannotReplyToPureRenote);
-		}
+			let renote: Note | null = null;
+			if (ps.renoteId != null) {
+				// Fetch renote to note
+				renote = await this.notesRepository.findOneBy({ id: ps.renoteId });
 
-		// Check blocking
-		if (reply.userId !== user.id) {
-			const block = await Blockings.findOneBy({
-				blockerId: reply.userId,
-				blockeeId: user.id,
-			});
-			if (block) {
-				throw new ApiError(meta.errors.youHaveBeenBlocked);
+				if (renote == null) {
+					throw new ApiError(meta.errors.noSuchRenoteTarget);
+				} else if (renote.renoteId && !renote.text && !renote.fileIds && !renote.hasPoll) {
+					throw new ApiError(meta.errors.cannotReRenote);
+				}
+
+				// Check blocking
+				if (renote.userId !== me.id) {
+					const block = await this.blockingsRepository.findOneBy({
+						blockerId: renote.userId,
+						blockeeId: me.id,
+					});
+					if (block) {
+						throw new ApiError(meta.errors.youHaveBeenBlocked);
+					}
+				}
 			}
-		}
-	}
 
-	if (ps.poll) {
-		if (typeof ps.poll.expiresAt === 'number') {
-			if (ps.poll.expiresAt < Date.now()) {
-				throw new ApiError(meta.errors.cannotCreateAlreadyExpiredPoll);
+			let reply: Note | null = null;
+			if (ps.replyId != null) {
+				// Fetch reply
+				reply = await this.notesRepository.findOneBy({ id: ps.replyId });
+
+				if (reply == null) {
+					throw new ApiError(meta.errors.noSuchReplyTarget);
+				} else if (reply.renoteId && !reply.text && !reply.fileIds && !reply.hasPoll) {
+					throw new ApiError(meta.errors.cannotReplyToPureRenote);
+				}
+
+				// Check blocking
+				if (reply.userId !== me.id) {
+					const block = await this.blockingsRepository.findOneBy({
+						blockerId: reply.userId,
+						blockeeId: me.id,
+					});
+					if (block) {
+						throw new ApiError(meta.errors.youHaveBeenBlocked);
+					}
+				}
 			}
-		} else if (typeof ps.poll.expiredAfter === 'number') {
-			ps.poll.expiresAt = Date.now() + ps.poll.expiredAfter;
-		}
-	}
 
-	let channel: Channel | null = null;
-	if (ps.channelId != null) {
-		channel = await Channels.findOneBy({ id: ps.channelId });
+			if (ps.poll) {
+				if (typeof ps.poll.expiresAt === 'number') {
+					if (ps.poll.expiresAt < Date.now()) {
+						throw new ApiError(meta.errors.cannotCreateAlreadyExpiredPoll);
+					}
+				} else if (typeof ps.poll.expiredAfter === 'number') {
+					ps.poll.expiresAt = Date.now() + ps.poll.expiredAfter;
+				}
+			}
 
-		if (channel == null) {
-			throw new ApiError(meta.errors.noSuchChannel);
-		}
-	}
+			let channel: Channel | null = null;
+			if (ps.channelId != null) {
+				channel = await this.channelsRepository.findOneBy({ id: ps.channelId });
 
-	// 投稿を作成
-	const note = await create(user, {
-		createdAt: new Date(),
-		files: files,
-		poll: ps.poll ? {
-			choices: ps.poll.choices,
-			multiple: ps.poll.multiple || false,
-			expiresAt: ps.poll.expiresAt ? new Date(ps.poll.expiresAt) : null,
-		} : undefined,
-		text: ps.text || undefined,
-		reply,
-		renote,
-		cw: ps.cw,
-		localOnly: ps.localOnly,
-		visibility: ps.visibility,
-		visibleUsers,
-		channel,
-		apMentions: ps.noExtractMentions ? [] : undefined,
-		apHashtags: ps.noExtractHashtags ? [] : undefined,
-		apEmojis: ps.noExtractEmojis ? [] : undefined,
-	});
+				if (channel == null) {
+					throw new ApiError(meta.errors.noSuchChannel);
+				}
+			}
+
+			// 投稿を作成
+			const note = await this.noteCreateService.create(me, {
+				createdAt: new Date(),
+				files: files,
+				poll: ps.poll ? {
+					choices: ps.poll.choices,
+					multiple: ps.poll.multiple || false,
+					expiresAt: ps.poll.expiresAt ? new Date(ps.poll.expiresAt) : null,
+				} : undefined,
+				text: ps.text ?? undefined,
+				reply,
+				renote,
+				cw: ps.cw,
+				localOnly: ps.localOnly,
+				visibility: ps.visibility,
+				visibleUsers,
+				channel,
+				apMentions: ps.noExtractMentions ? [] : undefined,
+				apHashtags: ps.noExtractHashtags ? [] : undefined,
+				apEmojis: ps.noExtractEmojis ? [] : undefined,
+			});
 
-	return {
-		createdNote: await Notes.pack(note, user),
-	};
-});
+			return {
+				createdNote: await this.noteEntityService.pack(note, me),
+			};
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/delete.ts b/packages/backend/src/server/api/endpoints/notes/delete.ts
index c23ceeb5bf..4769c8bdf1 100644
--- a/packages/backend/src/server/api/endpoints/notes/delete.ts
+++ b/packages/backend/src/server/api/endpoints/notes/delete.ts
@@ -1,9 +1,11 @@
 import ms from 'ms';
-import deleteNote from '@/services/note/delete.js';
-import { Users } from '@/models/index.js';
-import define from '../../define.js';
-import { getNote } from '../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { UsersRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteDeleteService } from '@/core/NoteDeleteService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -42,16 +44,27 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
 
-	if ((!user.isAdmin && !user.isModerator) && (note.userId !== user.id)) {
-		throw new ApiError(meta.errors.accessDenied);
-	}
+		private getterService: GetterService,
+		private noteDeleteService: NoteDeleteService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
+
+			if ((!me.isAdmin && !me.isModerator) && (note.userId !== me.id)) {
+				throw new ApiError(meta.errors.accessDenied);
+			}
 
-	// この操作を行うのが投稿者とは限らない(例えばモデレーター)ため
-	await deleteNote(await Users.findOneByOrFail({ id: note.userId }), note);
-});
+			// この操作を行うのが投稿者とは限らない(例えばモデレーター)ため
+			await this.noteDeleteService.delete(await this.usersRepository.findOneByOrFail({ id: note.userId }), note);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/favorites/create.ts b/packages/backend/src/server/api/endpoints/notes/favorites/create.ts
index 097371a425..bfdd1acd22 100644
--- a/packages/backend/src/server/api/endpoints/notes/favorites/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/favorites/create.ts
@@ -1,8 +1,10 @@
-import { NoteFavorites } from '@/models/index.js';
-import { genId } from '@/misc/gen-id.js';
-import define from '../../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NoteFavoritesRepository } from '@/models/index.js';
+import { IdService } from '@/core/IdService.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../../error.js';
-import { getNote } from '../../../common/getters.js';
 
 export const meta = {
 	tags: ['notes', 'favorites'],
@@ -35,28 +37,39 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	// Get favoritee
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.noteFavoritesRepository)
+		private noteFavoritesRepository: NoteFavoritesRepository,
 
-	// if already favorited
-	const exist = await NoteFavorites.findOneBy({
-		noteId: note.id,
-		userId: user.id,
-	});
+		private idService: IdService,
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			// Get favoritee
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	if (exist != null) {
-		throw new ApiError(meta.errors.alreadyFavorited);
-	}
+			// if already favorited
+			const exist = await this.noteFavoritesRepository.findOneBy({
+				noteId: note.id,
+				userId: me.id,
+			});
+
+			if (exist != null) {
+				throw new ApiError(meta.errors.alreadyFavorited);
+			}
 
-	// Create favorite
-	await NoteFavorites.insert({
-		id: genId(),
-		createdAt: new Date(),
-		noteId: note.id,
-		userId: user.id,
-	});
-});
+			// Create favorite
+			await this.noteFavoritesRepository.insert({
+				id: this.idService.genId(),
+				createdAt: new Date(),
+				noteId: note.id,
+				userId: me.id,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/favorites/delete.ts b/packages/backend/src/server/api/endpoints/notes/favorites/delete.ts
index 82ef4fa197..6b3a02b101 100644
--- a/packages/backend/src/server/api/endpoints/notes/favorites/delete.ts
+++ b/packages/backend/src/server/api/endpoints/notes/favorites/delete.ts
@@ -1,7 +1,9 @@
-import { NoteFavorites } from '@/models/index.js';
-import define from '../../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { DI } from '@/di-symbols.js';
+import { NoteFavoritesRepository } from '@/models/index.js';
 import { ApiError } from '../../../error.js';
-import { getNote } from '../../../common/getters.js';
 
 export const meta = {
 	tags: ['notes', 'favorites'],
@@ -34,23 +36,33 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	// Get favoritee
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.noteFavoritesRepository)
+		private noteFavoritesRepository: NoteFavoritesRepository,
 
-	// if already favorited
-	const exist = await NoteFavorites.findOneBy({
-		noteId: note.id,
-		userId: user.id,
-	});
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			// Get favoritee
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	if (exist == null) {
-		throw new ApiError(meta.errors.notFavorited);
-	}
+			// if already favorited
+			const exist = await this.noteFavoritesRepository.findOneBy({
+				noteId: note.id,
+				userId: me.id,
+			});
+
+			if (exist == null) {
+				throw new ApiError(meta.errors.notFavorited);
+			}
 
-	// Delete favorite
-	await NoteFavorites.delete(exist.id);
-});
+			// Delete favorite
+			await this.noteFavoritesRepository.delete(exist.id);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/featured.ts b/packages/backend/src/server/api/endpoints/notes/featured.ts
index dd9cc581aa..9985f9d257 100644
--- a/packages/backend/src/server/api/endpoints/notes/featured.ts
+++ b/packages/backend/src/server/api/endpoints/notes/featured.ts
@@ -1,7 +1,9 @@
-import { Notes } from '@/models/index.js';
-import define from '../../define.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -29,39 +31,50 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const max = 30;
-	const day = 1000 * 60 * 60 * 24 * 3; // 3日前まで
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	const query = Notes.createQueryBuilder('note')
-		.addSelect('note.score')
-		.where('note.userHost IS NULL')
-		.andWhere('note.score > 0')
-		.andWhere('note.createdAt > :date', { date: new Date(Date.now() - day) })
-		.andWhere('note.visibility = \'public\'')
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const max = 30;
+			const day = 1000 * 60 * 60 * 24 * 3; // 3日前まで
 
-	if (user) generateMutedUserQuery(query, user);
-	if (user) generateBlockedUserQuery(query, user);
+			const query = this.notesRepository.createQueryBuilder('note')
+				.addSelect('note.score')
+				.where('note.userHost IS NULL')
+				.andWhere('note.score > 0')
+				.andWhere('note.createdAt > :date', { date: new Date(Date.now() - day) })
+				.andWhere('note.visibility = \'public\'')
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	let notes = await query
-		.orderBy('note.score', 'DESC')
-		.take(max)
-		.getMany();
+			if (me) this.queryService.generateMutedUserQuery(query, me);
+			if (me) this.queryService.generateBlockedUserQuery(query, me);
 
-	notes.sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());
+			let notes = await query
+				.orderBy('note.score', 'DESC')
+				.take(max)
+				.getMany();
 
-	notes = notes.slice(ps.offset, ps.offset + ps.limit);
+			notes.sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());
 
-	return await Notes.packMany(notes, user);
-});
+			notes = notes.slice(ps.offset, ps.offset + ps.limit);
+
+			return await this.noteEntityService.packMany(notes, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/global-timeline.ts b/packages/backend/src/server/api/endpoints/notes/global-timeline.ts
index 925318f544..73b5afa40a 100644
--- a/packages/backend/src/server/api/endpoints/notes/global-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/global-timeline.ts
@@ -1,13 +1,12 @@
-import { fetchMeta } from '@/misc/fetch-meta.js';
-import { Notes } from '@/models/index.js';
-import { activeUsersChart } from '@/services/chart/index.js';
-import define from '../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { MetaService } from '@/core/MetaService.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateRepliesQuery } from '../../common/generate-replies-query.js';
-import { generateMutedNoteQuery } from '../../common/generate-muted-note-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -49,50 +48,63 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const m = await fetchMeta();
-	if (m.disableGlobalTimeline) {
-		if (user == null || (!user.isAdmin && !user.isModerator)) {
-			throw new ApiError(meta.errors.gtlDisabled);
-		}
-	}
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	//#region Construct query
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'),
-		ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-		.andWhere('note.visibility = \'public\'')
-		.andWhere('note.channelId IS NULL')
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private metaService: MetaService,
+		private activeUsersChart: ActiveUsersChart,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const m = await this.metaService.fetch();
+			if (m.disableGlobalTimeline) {
+				if (me == null || (!me.isAdmin && !me.isModerator)) {
+					throw new ApiError(meta.errors.gtlDisabled);
+				}
+			}
 
-	generateRepliesQuery(query, user);
-	if (user) {
-		generateMutedUserQuery(query, user);
-		generateMutedNoteQuery(query, user);
-		generateBlockedUserQuery(query, user);
-	}
+			//#region Construct query
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
+				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
+				.andWhere('note.visibility = \'public\'')
+				.andWhere('note.channelId IS NULL')
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	if (ps.withFiles) {
-		query.andWhere('note.fileIds != \'{}\'');
-	}
-	//#endregion
+			this.queryService.generateRepliesQuery(query, me);
+			if (me) {
+				this.queryService.generateMutedUserQuery(query, me);
+				this.queryService.generateMutedNoteQuery(query, me);
+				this.queryService.generateBlockedUserQuery(query, me);
+			}
 
-	const timeline = await query.take(ps.limit).getMany();
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
+			}
+			//#endregion
 
-	process.nextTick(() => {
-		if (user) {
-			activeUsersChart.read(user);
-		}
-	});
+			const timeline = await query.take(ps.limit).getMany();
 
-	return await Notes.packMany(timeline, user);
-});
+			process.nextTick(() => {
+				if (me) {
+					this.activeUsersChart.read(me);
+				}
+			});
+
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
index 2dc98c4c9f..c6458223eb 100644
--- a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
@@ -1,16 +1,13 @@
 import { Brackets } from 'typeorm';
-import { fetchMeta } from '@/misc/fetch-meta.js';
-import { Followings, Notes } from '@/models/index.js';
-import { activeUsersChart } from '@/services/chart/index.js';
-import define from '../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, FollowingsRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { MetaService } from '@/core/MetaService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateRepliesQuery } from '../../common/generate-replies-query.js';
-import { generateMutedNoteQuery } from '../../common/generate-muted-note-query.js';
-import { generateChannelQuery } from '../../common/generate-channel-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -57,83 +54,99 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const m = await fetchMeta();
-	if (m.disableLocalTimeline && (!user.isAdmin && !user.isModerator)) {
-		throw new ApiError(meta.errors.stlDisabled);
-	}
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	//#region Construct query
-	const followingQuery = Followings.createQueryBuilder('following')
-		.select('following.followeeId')
-		.where('following.followerId = :followerId', { followerId: user.id });
+		@Inject(DI.followingsRepository)
+		private followingsRepository: FollowingsRepository,
 
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'),
-		ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-		.andWhere(new Brackets(qb => {
-			qb.where(`((note.userId IN (${ followingQuery.getQuery() })) OR (note.userId = :meId))`, { meId: user.id })
-				.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
-		}))
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner')
-		.setParameters(followingQuery.getParameters());
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private metaService: MetaService,
+		private activeUsersChart: ActiveUsersChart,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const m = await this.metaService.fetch();
+			if (m.disableLocalTimeline && (!me.isAdmin && !me.isModerator)) {
+				throw new ApiError(meta.errors.stlDisabled);
+			}
 
-	generateChannelQuery(query, user);
-	generateRepliesQuery(query, user);
-	generateVisibilityQuery(query, user);
-	generateMutedUserQuery(query, user);
-	generateMutedNoteQuery(query, user);
-	generateBlockedUserQuery(query, user);
+			//#region Construct query
+			const followingQuery = this.followingsRepository.createQueryBuilder('following')
+				.select('following.followeeId')
+				.where('following.followerId = :followerId', { followerId: me.id });
 
-	if (ps.includeMyRenotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.userId != :meId', { meId: user.id });
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
+				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
+				.andWhere(new Brackets(qb => {
+					qb.where(`((note.userId IN (${ followingQuery.getQuery() })) OR (note.userId = :meId))`, { meId: me.id })
+						.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
+				}))
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner')
+				.setParameters(followingQuery.getParameters());
 
-	if (ps.includeRenotedMyNotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.renoteUserId != :meId', { meId: user.id });
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			this.queryService.generateChannelQuery(query, me);
+			this.queryService.generateRepliesQuery(query, me);
+			this.queryService.generateVisibilityQuery(query, me);
+			this.queryService.generateMutedUserQuery(query, me);
+			this.queryService.generateMutedNoteQuery(query, me);
+			this.queryService.generateBlockedUserQuery(query, me);
 
-	if (ps.includeLocalRenotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.renoteUserHost IS NOT NULL');
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			if (ps.includeMyRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.userId != :meId', { meId: me.id });
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	if (ps.withFiles) {
-		query.andWhere('note.fileIds != \'{}\'');
-	}
-	//#endregion
+			if (ps.includeRenotedMyNotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
+
+			if (ps.includeLocalRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteUserHost IS NOT NULL');
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	const timeline = await query.take(ps.limit).getMany();
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
+			}
+			//#endregion
 
-	process.nextTick(() => {
-		activeUsersChart.read(user);
-	});
+			const timeline = await query.take(ps.limit).getMany();
 
-	return await Notes.packMany(timeline, user);
-});
+			process.nextTick(() => {
+				this.activeUsersChart.read(me);
+			});
+
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
index aac2a3749c..7b8859639d 100644
--- a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
@@ -1,16 +1,14 @@
 import { Brackets } from 'typeorm';
-import { fetchMeta } from '@/misc/fetch-meta.js';
-import { Notes, Users } from '@/models/index.js';
-import { activeUsersChart } from '@/services/chart/index.js';
-import define from '../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import type { UsersRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { MetaService } from '@/core/MetaService.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateRepliesQuery } from '../../common/generate-replies-query.js';
-import { generateMutedNoteQuery } from '../../common/generate-muted-note-query.js';
-import { generateChannelQuery } from '../../common/generate-channel-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -56,64 +54,77 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const m = await fetchMeta();
-	if (m.disableLocalTimeline) {
-		if (user == null || (!user.isAdmin && !user.isModerator)) {
-			throw new ApiError(meta.errors.ltlDisabled);
-		}
-	}
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	//#region Construct query
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'),
-		ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-		.andWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)')
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private metaService: MetaService,
+		private activeUsersChart: ActiveUsersChart,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const m = await this.metaService.fetch();
+			if (m.disableLocalTimeline) {
+				if (me == null || (!me.isAdmin && !me.isModerator)) {
+					throw new ApiError(meta.errors.ltlDisabled);
+				}
+			}
 
-	generateChannelQuery(query, user);
-	generateRepliesQuery(query, user);
-	generateVisibilityQuery(query, user);
-	if (user) generateMutedUserQuery(query, user);
-	if (user) generateMutedNoteQuery(query, user);
-	if (user) generateBlockedUserQuery(query, user);
+			//#region Construct query
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
+				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
+				.andWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)')
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	if (ps.withFiles) {
-		query.andWhere('note.fileIds != \'{}\'');
-	}
+			this.queryService.generateChannelQuery(query, me);
+			this.queryService.generateRepliesQuery(query, me);
+			this.queryService.generateVisibilityQuery(query, me);
+			if (me) this.queryService.generateMutedUserQuery(query, me);
+			if (me) this.queryService.generateMutedNoteQuery(query, me);
+			if (me) this.queryService.generateBlockedUserQuery(query, me);
 
-	if (ps.fileType != null) {
-		query.andWhere('note.fileIds != \'{}\'');
-		query.andWhere(new Brackets(qb => {
-			for (const type of ps.fileType!) {
-				const i = ps.fileType!.indexOf(type);
-				qb.orWhere(`:type${i} = ANY(note.attachedFileTypes)`, { [`type${i}`]: type });
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
 			}
-		}));
 
-		if (ps.excludeNsfw) {
-			query.andWhere('note.cw IS NULL');
-			query.andWhere('0 = (SELECT COUNT(*) FROM drive_file df WHERE df.id = ANY(note."fileIds") AND df."isSensitive" = TRUE)');
-		}
-	}
-	//#endregion
+			if (ps.fileType != null) {
+				query.andWhere('note.fileIds != \'{}\'');
+				query.andWhere(new Brackets(qb => {
+					for (const type of ps.fileType!) {
+						const i = ps.fileType!.indexOf(type);
+						qb.orWhere(`:type${i} = ANY(note.attachedFileTypes)`, { [`type${i}`]: type });
+					}
+				}));
 
-	const timeline = await query.take(ps.limit).getMany();
+				if (ps.excludeNsfw) {
+					query.andWhere('note.cw IS NULL');
+					query.andWhere('0 = (SELECT COUNT(*) FROM drive_file df WHERE df.id = ANY(note."fileIds") AND df."isSensitive" = TRUE)');
+				}
+			}
+			//#endregion
+
+			const timeline = await query.take(ps.limit).getMany();
 
-	process.nextTick(() => {
-		if (user) {
-			activeUsersChart.read(user);
-		}
-	});
+			process.nextTick(() => {
+				if (me) {
+					this.activeUsersChart.read(me);
+				}
+			});
 
-	return await Notes.packMany(timeline, user);
-});
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/mentions.ts b/packages/backend/src/server/api/endpoints/notes/mentions.ts
index 9b41544523..9b2dabc88b 100644
--- a/packages/backend/src/server/api/endpoints/notes/mentions.ts
+++ b/packages/backend/src/server/api/endpoints/notes/mentions.ts
@@ -1,12 +1,12 @@
 import { Brackets } from 'typeorm';
-import read from '@/services/note/read.js';
-import { Notes, Followings } from '@/models/index.js';
-import define from '../../define.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
-import { generateMutedNoteThreadQuery } from '../../common/generate-muted-note-thread-query.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, FollowingsRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { MetaService } from '@/core/MetaService.js';
+import { NoteReadService } from '@/core/NoteReadService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -37,45 +37,60 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const followingQuery = Followings.createQueryBuilder('following')
-		.select('following.followeeId')
-		.where('following.followerId = :followerId', { followerId: user.id });
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId)
-		.andWhere(new Brackets(qb => { qb
-			.where(`'{"${user.id}"}' <@ note.mentions`)
-			.orWhere(`'{"${user.id}"}' <@ note.visibleUserIds`);
-		}))
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+		@Inject(DI.followingsRepository)
+		private followingsRepository: FollowingsRepository,
 
-	generateVisibilityQuery(query, user);
-	generateMutedUserQuery(query, user);
-	generateMutedNoteThreadQuery(query, user);
-	generateBlockedUserQuery(query, user);
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private noteReadService: NoteReadService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const followingQuery = this.followingsRepository.createQueryBuilder('following')
+				.select('following.followeeId')
+				.where('following.followerId = :followerId', { followerId: me.id });
 
-	if (ps.visibility) {
-		query.andWhere('note.visibility = :visibility', { visibility: ps.visibility });
-	}
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+				.andWhere(new Brackets(qb => { qb
+					.where(`'{"${me.id}"}' <@ note.mentions`)
+					.orWhere(`'{"${me.id}"}' <@ note.visibleUserIds`);
+				}))
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	if (ps.following) {
-		query.andWhere(`((note.userId IN (${ followingQuery.getQuery() })) OR (note.userId = :meId))`, { meId: user.id });
-		query.setParameters(followingQuery.getParameters());
-	}
+			this.queryService.generateVisibilityQuery(query, me);
+			this.queryService.generateMutedUserQuery(query, me);
+			this.queryService.generateMutedNoteThreadQuery(query, me);
+			this.queryService.generateBlockedUserQuery(query, me);
+
+			if (ps.visibility) {
+				query.andWhere('note.visibility = :visibility', { visibility: ps.visibility });
+			}
 
-	const mentions = await query.take(ps.limit).getMany();
+			if (ps.following) {
+				query.andWhere(`((note.userId IN (${ followingQuery.getQuery() })) OR (note.userId = :meId))`, { meId: me.id });
+				query.setParameters(followingQuery.getParameters());
+			}
 
-	read(user.id, mentions);
+			const mentions = await query.take(ps.limit).getMany();
 
-	return await Notes.packMany(mentions, user);
-});
+			this.noteReadService.read(me.id, mentions);
+
+			return await this.noteEntityService.packMany(mentions, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/polls/recommendation.ts b/packages/backend/src/server/api/endpoints/notes/polls/recommendation.ts
index 5a04d68f3e..11bfdbba0f 100644
--- a/packages/backend/src/server/api/endpoints/notes/polls/recommendation.ts
+++ b/packages/backend/src/server/api/endpoints/notes/polls/recommendation.ts
@@ -1,6 +1,9 @@
 import { Brackets, In } from 'typeorm';
-import { Polls, Mutings, Notes, PollVotes } from '@/models/index.js';
-import define from '../../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, MutingsRepository, PollsRepository, PollVotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -28,56 +31,75 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const query = Polls.createQueryBuilder('poll')
-		.where('poll.userHost IS NULL')
-		.andWhere('poll.userId != :meId', { meId: user.id })
-		.andWhere('poll.noteVisibility = \'public\'')
-		.andWhere(new Brackets(qb => { qb
-			.where('poll.expiresAt IS NULL')
-			.orWhere('poll.expiresAt > :now', { now: new Date() });
-		}));
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	//#region exclude arleady voted polls
-	const votedQuery = PollVotes.createQueryBuilder('vote')
-		.select('vote.noteId')
-		.where('vote.userId = :meId', { meId: user.id });
+		@Inject(DI.pollsRepository)
+		private pollsRepository: PollsRepository,
 
-	query
-		.andWhere(`poll.noteId NOT IN (${ votedQuery.getQuery() })`);
+		@Inject(DI.pollVotesRepository)
+		private pollVotesRepository: PollVotesRepository,
 
-	query.setParameters(votedQuery.getParameters());
-	//#endregion
+		@Inject(DI.mutingsRepository)
+		private mutingsRepository: MutingsRepository,
 
-	//#region mute
-	const mutingQuery = Mutings.createQueryBuilder('muting')
-		.select('muting.muteeId')
-		.where('muting.muterId = :muterId', { muterId: user.id });
+		private noteEntityService: NoteEntityService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const query = this.pollsRepository.createQueryBuilder('poll')
+				.where('poll.userHost IS NULL')
+				.andWhere('poll.userId != :meId', { meId: me.id })
+				.andWhere('poll.noteVisibility = \'public\'')
+				.andWhere(new Brackets(qb => { qb
+					.where('poll.expiresAt IS NULL')
+					.orWhere('poll.expiresAt > :now', { now: new Date() });
+				}));
 
-	query
-		.andWhere(`poll.userId NOT IN (${ mutingQuery.getQuery() })`);
+			//#region exclude arleady voted polls
+			const votedQuery = this.pollVotesRepository.createQueryBuilder('vote')
+				.select('vote.noteId')
+				.where('vote.userId = :meId', { meId: me.id });
 
-	query.setParameters(mutingQuery.getParameters());
-	//#endregion
+			query
+				.andWhere(`poll.noteId NOT IN (${ votedQuery.getQuery() })`);
 
-	const polls = await query
-		.orderBy('poll.noteId', 'DESC')
-		.take(ps.limit)
-		.skip(ps.offset)
-		.getMany();
+			query.setParameters(votedQuery.getParameters());
+			//#endregion
 
-	if (polls.length === 0) return [];
+			//#region mute
+			const mutingQuery = this.mutingsRepository.createQueryBuilder('muting')
+				.select('muting.muteeId')
+				.where('muting.muterId = :muterId', { muterId: me.id });
 
-	const notes = await Notes.find({
-		where: {
-			id: In(polls.map(poll => poll.noteId)),
-		},
-		order: {
-			createdAt: 'DESC',
-		},
-	});
+			query
+				.andWhere(`poll.userId NOT IN (${ mutingQuery.getQuery() })`);
+
+			query.setParameters(mutingQuery.getParameters());
+			//#endregion
+
+			const polls = await query
+				.orderBy('poll.noteId', 'DESC')
+				.take(ps.limit)
+				.skip(ps.offset)
+				.getMany();
+
+			if (polls.length === 0) return [];
+
+			const notes = await this.notesRepository.find({
+				where: {
+					id: In(polls.map(poll => poll.noteId)),
+				},
+				order: {
+					createdAt: 'DESC',
+				},
+			});
 
-	return await Notes.packMany(notes, user, {
-		detail: true,
-	});
-});
+			return await this.noteEntityService.packMany(notes, me, {
+				detail: true,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/polls/vote.ts b/packages/backend/src/server/api/endpoints/notes/polls/vote.ts
index 45a832cbd2..76f07528d7 100644
--- a/packages/backend/src/server/api/endpoints/notes/polls/vote.ts
+++ b/packages/backend/src/server/api/endpoints/notes/polls/vote.ts
@@ -1,16 +1,17 @@
 import { Not } from 'typeorm';
-import { publishNoteStream } from '@/services/stream.js';
-import { createNotification } from '@/services/create-notification.js';
-import { deliver } from '@/queue/index.js';
-import { renderActivity } from '@/remote/activitypub/renderer/index.js';
-import renderVote from '@/remote/activitypub/renderer/vote.js';
-import { deliverQuestionUpdate } from '@/services/note/polls/update.js';
-import { PollVotes, NoteWatchings, Users, Polls, Blockings } from '@/models/index.js';
-import { IRemoteUser } from '@/models/entities/user.js';
-import { genId } from '@/misc/gen-id.js';
-import { getNote } from '../../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { UsersRepository, BlockingsRepository, PollsRepository, PollVotesRepository } from '@/models/index.js';
+import type { IRemoteUser } from '@/models/entities/User.js';
+import { IdService } from '@/core/IdService.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { QueueService } from '@/core/QueueService.js';
+import { PollService } from '@/core/PollService.js';
+import { ApRendererService } from '@/core/remote/activitypub/ApRendererService.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { CreateNotificationService } from '@/core/CreateNotificationService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../../error.js';
-import define from '../../../define.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -67,103 +68,116 @@ export const paramDef = {
 	required: ['noteId', 'choice'],
 } as const;
 
+// TODO: ロジックをサービスに切り出す
+
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const createdAt = new Date();
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
 
-	// Get votee
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+		@Inject(DI.blockingsRepository)
+		private blockingsRepository: BlockingsRepository,
 
-	if (!note.hasPoll) {
-		throw new ApiError(meta.errors.noPoll);
-	}
+		@Inject(DI.pollsRepository)
+		private pollsRepository: PollsRepository,
 
-	// Check blocking
-	if (note.userId !== user.id) {
-		const block = await Blockings.findOneBy({
-			blockerId: note.userId,
-			blockeeId: user.id,
-		});
-		if (block) {
-			throw new ApiError(meta.errors.youHaveBeenBlocked);
-		}
-	}
+		@Inject(DI.pollVotesRepository)
+		private pollVotesRepository: PollVotesRepository,
 
-	const poll = await Polls.findOneByOrFail({ noteId: note.id });
+		private idService: IdService,
+		private getterService: GetterService,
+		private queueService: QueueService,
+		private pollService: PollService,
+		private apRendererService: ApRendererService,
+		private globalEventService: GlobalEventService,
+		private createNotificationService: CreateNotificationService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const createdAt = new Date();
 
-	if (poll.expiresAt && poll.expiresAt < createdAt) {
-		throw new ApiError(meta.errors.alreadyExpired);
-	}
+			// Get votee
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	if (poll.choices[ps.choice] == null) {
-		throw new ApiError(meta.errors.invalidChoice);
-	}
+			if (!note.hasPoll) {
+				throw new ApiError(meta.errors.noPoll);
+			}
+
+			// Check blocking
+			if (note.userId !== me.id) {
+				const block = await this.blockingsRepository.findOneBy({
+					blockerId: note.userId,
+					blockeeId: me.id,
+				});
+				if (block) {
+					throw new ApiError(meta.errors.youHaveBeenBlocked);
+				}
+			}
 
-	// if already voted
-	const exist = await PollVotes.findBy({
-		noteId: note.id,
-		userId: user.id,
-	});
+			const poll = await this.pollsRepository.findOneByOrFail({ noteId: note.id });
 
-	if (exist.length) {
-		if (poll.multiple) {
-			if (exist.some(x => x.choice === ps.choice)) {
-				throw new ApiError(meta.errors.alreadyVoted);
+			if (poll.expiresAt && poll.expiresAt < createdAt) {
+				throw new ApiError(meta.errors.alreadyExpired);
 			}
-		} else {
-			throw new ApiError(meta.errors.alreadyVoted);
-		}
-	}
 
-	// Create vote
-	const vote = await PollVotes.insert({
-		id: genId(),
-		createdAt,
-		noteId: note.id,
-		userId: user.id,
-		choice: ps.choice,
-	}).then(x => PollVotes.findOneByOrFail(x.identifiers[0]));
+			if (poll.choices[ps.choice] == null) {
+				throw new ApiError(meta.errors.invalidChoice);
+			}
 
-	// Increment votes count
-	const index = ps.choice + 1; // In SQL, array index is 1 based
-	await Polls.query(`UPDATE poll SET votes[${index}] = votes[${index}] + 1 WHERE "noteId" = '${poll.noteId}'`);
+			// if already voted
+			const exist = await this.pollVotesRepository.findBy({
+				noteId: note.id,
+				userId: me.id,
+			});
+
+			if (exist.length) {
+				if (poll.multiple) {
+					if (exist.some(x => x.choice === ps.choice)) {
+						throw new ApiError(meta.errors.alreadyVoted);
+					}
+				} else {
+					throw new ApiError(meta.errors.alreadyVoted);
+				}
+			}
+
+			// Create vote
+			const vote = await this.pollVotesRepository.insert({
+				id: this.idService.genId(),
+				createdAt,
+				noteId: note.id,
+				userId: me.id,
+				choice: ps.choice,
+			}).then(x => this.pollVotesRepository.findOneByOrFail(x.identifiers[0]));
 
-	publishNoteStream(note.id, 'pollVoted', {
-		choice: ps.choice,
-		userId: user.id,
-	});
+			// Increment votes count
+			const index = ps.choice + 1; // In SQL, array index is 1 based
+			await this.pollsRepository.query(`UPDATE poll SET votes[${index}] = votes[${index}] + 1 WHERE "noteId" = '${poll.noteId}'`);
 
-	// Notify
-	createNotification(note.userId, 'pollVote', {
-		notifierId: user.id,
-		noteId: note.id,
-		choice: ps.choice,
-	});
+			this.globalEventService.publishNoteStream(note.id, 'pollVoted', {
+				choice: ps.choice,
+				userId: me.id,
+			});
 
-	// Fetch watchers
-	NoteWatchings.findBy({
-		noteId: note.id,
-		userId: Not(user.id),
-	}).then(watchers => {
-		for (const watcher of watchers) {
-			createNotification(watcher.userId, 'pollVote', {
-				notifierId: user.id,
+			// Notify
+			this.createNotificationService.createNotification(note.userId, 'pollVote', {
+				notifierId: me.id,
 				noteId: note.id,
 				choice: ps.choice,
 			});
-		}
-	});
 
-	// リモート投票の場合リプライ送信
-	if (note.userHost != null) {
-		const pollOwner = await Users.findOneByOrFail({ id: note.userId }) as IRemoteUser;
+			// リモート投票の場合リプライ送信
+			if (note.userHost != null) {
+				const pollOwner = await this.usersRepository.findOneByOrFail({ id: note.userId }) as IRemoteUser;
 
-		deliver(user, renderActivity(await renderVote(user, vote, note, poll, pollOwner)), pollOwner.inbox);
-	}
+				this.queueService.deliver(me, this.apRendererService.renderActivity(await this.apRendererService.renderVote(me, vote, note, poll, pollOwner)), pollOwner.inbox);
+			}
 
-	// リモートフォロワーにUpdate配信
-	deliverQuestionUpdate(note.id);
-});
+			// リモートフォロワーにUpdate配信
+			this.pollService.deliverQuestionUpdate(note.id);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/reactions.ts b/packages/backend/src/server/api/endpoints/notes/reactions.ts
index 15a62d394d..d57950f012 100644
--- a/packages/backend/src/server/api/endpoints/notes/reactions.ts
+++ b/packages/backend/src/server/api/endpoints/notes/reactions.ts
@@ -1,8 +1,12 @@
-import { DeepPartial, FindOptionsWhere } from 'typeorm';
-import { NoteReactions } from '@/models/index.js';
-import { NoteReaction } from '@/models/entities/note-reaction.js';
-import define from '../../define.js';
+import { DeepPartial } from 'typeorm';
+import { Inject, Injectable } from '@nestjs/common';
+import { NoteReactionsRepository } from '@/models/index.js';
+import type { NoteReaction } from '@/models/entities/NoteReaction.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteReactionEntityService } from '@/core/entities/NoteReactionEntityService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
+import type { FindOptionsWhere } from 'typeorm';
 
 export const meta = {
 	tags: ['notes', 'reactions'],
@@ -45,28 +49,38 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const query = {
-		noteId: ps.noteId,
-	} as FindOptionsWhere<NoteReaction>;
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.noteReactionsRepository)
+		private noteReactionsRepository: NoteReactionsRepository,
 
-	if (ps.type) {
-		// ローカルリアクションはホスト名が . とされているが
-		// DB 上ではそうではないので、必要に応じて変換
-		const suffix = '@.:';
-		const type = ps.type.endsWith(suffix) ? ps.type.slice(0, ps.type.length - suffix.length) + ':' : ps.type;
-		query.reaction = type;
-	}
+		private noteReactionEntityService: NoteReactionEntityService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const query = {
+				noteId: ps.noteId,
+			} as FindOptionsWhere<NoteReaction>;
 
-	const reactions = await NoteReactions.find({
-		where: query,
-		take: ps.limit,
-		skip: ps.offset,
-		order: {
-			id: -1,
-		},
-		relations: ['user', 'user.avatar', 'user.banner', 'note'],
-	});
+			if (ps.type) {
+				// ローカルリアクションはホスト名が . とされているが
+				// DB 上ではそうではないので、必要に応じて変換
+				const suffix = '@.:';
+				const type = ps.type.endsWith(suffix) ? ps.type.slice(0, ps.type.length - suffix.length) + ':' : ps.type;
+				query.reaction = type;
+			}
 
-	return await Promise.all(reactions.map(reaction => NoteReactions.pack(reaction, user)));
-});
+			const reactions = await this.noteReactionsRepository.find({
+				where: query,
+				take: ps.limit,
+				skip: ps.offset,
+				order: {
+					id: -1,
+				},
+				relations: ['user', 'user.avatar', 'user.banner', 'note'],
+			});
+
+			return await Promise.all(reactions.map(reaction => this.noteReactionEntityService.pack(reaction, me)));
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/reactions/create.ts b/packages/backend/src/server/api/endpoints/notes/reactions/create.ts
index 07e52a9266..2af734307d 100644
--- a/packages/backend/src/server/api/endpoints/notes/reactions/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/reactions/create.ts
@@ -1,6 +1,7 @@
-import createReaction from '@/services/note/reaction/create.js';
-import define from '../../../define.js';
-import { getNote } from '../../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { ReactionService } from '@/core/ReactionService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -41,15 +42,23 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
-	await createReaction(user, note, ps.reaction).catch(e => {
-		if (e.id === '51c42bb4-931a-456b-bff7-e5a8a70dd298') throw new ApiError(meta.errors.alreadyReacted);
-		if (e.id === 'e70412a4-7197-4726-8e74-f3e0deb92aa7') throw new ApiError(meta.errors.youHaveBeenBlocked);
-		throw e;
-	});
-	return;
-});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		private getterService: GetterService,
+		private reactionService: ReactionService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
+			await this.reactionService.create(me, note, ps.reaction).catch(err => {
+				if (err.id === '51c42bb4-931a-456b-bff7-e5a8a70dd298') throw new ApiError(meta.errors.alreadyReacted);
+				if (err.id === 'e70412a4-7197-4726-8e74-f3e0deb92aa7') throw new ApiError(meta.errors.youHaveBeenBlocked);
+				throw err;
+			});
+			return;
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/reactions/delete.ts b/packages/backend/src/server/api/endpoints/notes/reactions/delete.ts
index c13cafa21d..31ed962922 100644
--- a/packages/backend/src/server/api/endpoints/notes/reactions/delete.ts
+++ b/packages/backend/src/server/api/endpoints/notes/reactions/delete.ts
@@ -1,7 +1,8 @@
 import ms from 'ms';
-import deleteReaction from '@/services/note/reaction/delete.js';
-import define from '../../../define.js';
-import { getNote } from '../../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { ReactionService } from '@/core/ReactionService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -41,13 +42,21 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
-	await deleteReaction(user, note).catch(e => {
-		if (e.id === '60527ec9-b4cb-4a88-a6bd-32d3ad26817d') throw new ApiError(meta.errors.notReacted);
-		throw e;
-	});
-});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		private getterService: GetterService,
+		private reactionService: ReactionService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
+			await this.reactionService.delete(me, note).catch(err => {
+				if (err.id === '60527ec9-b4cb-4a88-a6bd-32d3ad26817d') throw new ApiError(meta.errors.notReacted);
+				throw err;
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/renotes.ts b/packages/backend/src/server/api/endpoints/notes/renotes.ts
index 28be360763..57b7aeae0d 100644
--- a/packages/backend/src/server/api/endpoints/notes/renotes.ts
+++ b/packages/backend/src/server/api/endpoints/notes/renotes.ts
@@ -1,11 +1,11 @@
-import { Notes } from '@/models/index.js';
-import define from '../../define.js';
-import { getNote } from '../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -43,31 +43,43 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId)
-		.andWhere('note.renoteId = :renoteId', { renoteId: note.id })
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	generateVisibilityQuery(query, user);
-	if (user) generateMutedUserQuery(query, user);
-	if (user) generateBlockedUserQuery(query, user);
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+				.andWhere('note.renoteId = :renoteId', { renoteId: note.id })
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	const renotes = await query.take(ps.limit).getMany();
+			this.queryService.generateVisibilityQuery(query, me);
+			if (me) this.queryService.generateMutedUserQuery(query, me);
+			if (me) this.queryService.generateBlockedUserQuery(query, me);
 
-	return await Notes.packMany(renotes, user);
-});
+			const renotes = await query.take(ps.limit).getMany();
+
+			return await this.noteEntityService.packMany(renotes, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/replies.ts b/packages/backend/src/server/api/endpoints/notes/replies.ts
index ab0018f58e..7020d0c681 100644
--- a/packages/backend/src/server/api/endpoints/notes/replies.ts
+++ b/packages/backend/src/server/api/endpoints/notes/replies.ts
@@ -1,9 +1,9 @@
-import { Notes } from '@/models/index.js';
-import define from '../../define.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -33,26 +33,37 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId)
-		.andWhere('note.replyId = :replyId', { replyId: ps.noteId })
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	generateVisibilityQuery(query, user);
-	if (user) generateMutedUserQuery(query, user);
-	if (user) generateBlockedUserQuery(query, user);
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+				.andWhere('note.replyId = :replyId', { replyId: ps.noteId })
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	const timeline = await query.take(ps.limit).getMany();
+			this.queryService.generateVisibilityQuery(query, me);
+			if (me) this.queryService.generateMutedUserQuery(query, me);
+			if (me) this.queryService.generateBlockedUserQuery(query, me);
 
-	return await Notes.packMany(timeline, user);
-});
+			const timeline = await query.take(ps.limit).getMany();
+
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/search-by-tag.ts b/packages/backend/src/server/api/endpoints/notes/search-by-tag.ts
index 777de7221c..0727c9af6c 100644
--- a/packages/backend/src/server/api/endpoints/notes/search-by-tag.ts
+++ b/packages/backend/src/server/api/endpoints/notes/search-by-tag.ts
@@ -1,12 +1,12 @@
 import { Brackets } from 'typeorm';
-import { Notes } from '@/models/index.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
 import { safeForSql } from '@/misc/safe-for-sql.js';
 import { normalizeForSearch } from '@/misc/normalize-for-search.js';
-import define from '../../define.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes', 'hashtags'],
@@ -66,75 +66,86 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, me) => {
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId)
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	generateVisibilityQuery(query, me);
-	if (me) generateMutedUserQuery(query, me);
-	if (me) generateBlockedUserQuery(query, me);
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-	try {
-		if (ps.tag) {
-			if (!safeForSql(ps.tag)) throw 'Injection';
-			query.andWhere(`'{"${normalizeForSearch(ps.tag)}"}' <@ note.tags`);
-		} else {
-			query.andWhere(new Brackets(qb => {
-				for (const tags of ps.query!) {
-					qb.orWhere(new Brackets(qb => {
-						for (const tag of tags) {
-							if (!safeForSql(tag)) throw 'Injection';
-							qb.andWhere(`'{"${normalizeForSearch(tag)}"}' <@ note.tags`);
+			this.queryService.generateVisibilityQuery(query, me);
+			if (me) this.queryService.generateMutedUserQuery(query, me);
+			if (me) this.queryService.generateBlockedUserQuery(query, me);
+
+			try {
+				if (ps.tag) {
+					if (!safeForSql(ps.tag)) throw 'Injection';
+					query.andWhere(`'{"${normalizeForSearch(ps.tag)}"}' <@ note.tags`);
+				} else {
+					query.andWhere(new Brackets(qb => {
+						for (const tags of ps.query!) {
+							qb.orWhere(new Brackets(qb => {
+								for (const tag of tags) {
+									if (!safeForSql(tag)) throw 'Injection';
+									qb.andWhere(`'{"${normalizeForSearch(tag)}"}' <@ note.tags`);
+								}
+							}));
 						}
 					}));
 				}
-			}));
-		}
-	} catch (e) {
-		if (e === 'Injection') return [];
-		throw e;
-	}
+			} catch (e) {
+				if (e === 'Injection') return [];
+				throw e;
+			}
 
-	if (ps.reply != null) {
-		if (ps.reply) {
-			query.andWhere('note.replyId IS NOT NULL');
-		} else {
-			query.andWhere('note.replyId IS NULL');
-		}
-	}
+			if (ps.reply != null) {
+				if (ps.reply) {
+					query.andWhere('note.replyId IS NOT NULL');
+				} else {
+					query.andWhere('note.replyId IS NULL');
+				}
+			}
 
-	if (ps.renote != null) {
-		if (ps.renote) {
-			query.andWhere('note.renoteId IS NOT NULL');
-		} else {
-			query.andWhere('note.renoteId IS NULL');
-		}
-	}
+			if (ps.renote != null) {
+				if (ps.renote) {
+					query.andWhere('note.renoteId IS NOT NULL');
+				} else {
+					query.andWhere('note.renoteId IS NULL');
+				}
+			}
 
-	if (ps.withFiles) {
-		query.andWhere('note.fileIds != \'{}\'');
-	}
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
+			}
 
-	if (ps.poll != null) {
-		if (ps.poll) {
-			query.andWhere('note.hasPoll = TRUE');
-		} else {
-			query.andWhere('note.hasPoll = FALSE');
-		}
-	}
+			if (ps.poll != null) {
+				if (ps.poll) {
+					query.andWhere('note.hasPoll = TRUE');
+				} else {
+					query.andWhere('note.hasPoll = FALSE');
+				}
+			}
 
-	// Search notes
-	const notes = await query.take(ps.limit).getMany();
+			// Search notes
+			const notes = await query.take(ps.limit).getMany();
 
-	return await Notes.packMany(notes, me);
-});
+			return await this.noteEntityService.packMany(notes, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/search.ts b/packages/backend/src/server/api/endpoints/notes/search.ts
index 4e2cdae801..484cfc1128 100644
--- a/packages/backend/src/server/api/endpoints/notes/search.ts
+++ b/packages/backend/src/server/api/endpoints/notes/search.ts
@@ -1,12 +1,11 @@
 import { In } from 'typeorm';
-import { Notes } from '@/models/index.js';
-import config from '@/config/index.js';
-import es from '../../../../db/elasticsearch.js';
-import define from '../../define.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { Config } from '@/config.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -46,97 +45,51 @@ export const paramDef = {
 	required: ['query'],
 } as const;
 
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, me) => {
-	if (es == null) {
-		const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId);
-
-		if (ps.userId) {
-			query.andWhere('note.userId = :userId', { userId: ps.userId });
-		} else if (ps.channelId) {
-			query.andWhere('note.channelId = :channelId', { channelId: ps.channelId });
-		}
-
-		query
-			.andWhere('note.text ILIKE :q', { q: `%${ps.query}%` })
-			.innerJoinAndSelect('note.user', 'user')
-			.leftJoinAndSelect('user.avatar', 'avatar')
-			.leftJoinAndSelect('user.banner', 'banner')
-			.leftJoinAndSelect('note.reply', 'reply')
-			.leftJoinAndSelect('note.renote', 'renote')
-			.leftJoinAndSelect('reply.user', 'replyUser')
-			.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-			.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-			.leftJoinAndSelect('renote.user', 'renoteUser')
-			.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-			.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
-
-		generateVisibilityQuery(query, me);
-		if (me) generateMutedUserQuery(query, me);
-		if (me) generateBlockedUserQuery(query, me);
+// TODO: ロジックをサービスに切り出す
 
-		const notes = await query.take(ps.limit).getMany();
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.config)
+		private config: Config,
+	
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-		return await Notes.packMany(notes, me);
-	} else {
-		const userQuery = ps.userId != null ? [{
-			term: {
-				userId: ps.userId,
-			},
-		}] : [];
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId);
 
-		const hostQuery = ps.userId == null ?
-			ps.host === null ? [{
-				bool: {
-					must_not: {
-						exists: {
-							field: 'userHost',
-						},
-					},
-				},
-			}] : ps.host !== undefined ? [{
-				term: {
-					userHost: ps.host,
-				},
-			}] : []
-			: [];
+			if (ps.userId) {
+				query.andWhere('note.userId = :userId', { userId: ps.userId });
+			} else if (ps.channelId) {
+				query.andWhere('note.channelId = :channelId', { channelId: ps.channelId });
+			}
 
-		const result = await es.search({
-			index: config.elasticsearch.index || 'misskey_note',
-			body: {
-				size: ps.limit,
-				from: ps.offset,
-				query: {
-					bool: {
-						must: [{
-							simple_query_string: {
-								fields: ['text'],
-								query: ps.query.toLowerCase(),
-								default_operator: 'and',
-							},
-						}, ...hostQuery, ...userQuery],
-					},
-				},
-				sort: [{
-					_doc: 'desc',
-				}],
-			},
-		});
+			query
+				.andWhere('note.text ILIKE :q', { q: `%${ps.query}%` })
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner');
 
-		const hits = result.body.hits.hits.map((hit: any) => hit._id);
+			this.queryService.generateVisibilityQuery(query, me);
+			if (me) this.queryService.generateMutedUserQuery(query, me);
+			if (me) this.queryService.generateBlockedUserQuery(query, me);
 
-		if (hits.length === 0) return [];
+			const notes = await query.take(ps.limit).getMany();
 
-		// Fetch found notes
-		const notes = await Notes.find({
-			where: {
-				id: In(hits),
-			},
-			order: {
-				id: -1,
-			},
+			return await this.noteEntityService.packMany(notes, me);
 		});
-
-		return await Notes.packMany(notes, me);
 	}
-});
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/show.ts b/packages/backend/src/server/api/endpoints/notes/show.ts
index 5cd74bd2ca..c3f5b9dfb0 100644
--- a/packages/backend/src/server/api/endpoints/notes/show.ts
+++ b/packages/backend/src/server/api/endpoints/notes/show.ts
@@ -1,7 +1,10 @@
-import { Notes } from '@/models/index.js';
-import define from '../../define.js';
-import { getNote } from '../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -32,13 +35,24 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	return await Notes.pack(note, user, {
-		detail: true,
-	});
-});
+		private noteEntityService: NoteEntityService,
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
+
+			return await this.noteEntityService.pack(note, me, {
+				detail: true,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/state.ts b/packages/backend/src/server/api/endpoints/notes/state.ts
index 01afa5add2..7756d39f7c 100644
--- a/packages/backend/src/server/api/endpoints/notes/state.ts
+++ b/packages/backend/src/server/api/endpoints/notes/state.ts
@@ -1,5 +1,7 @@
-import { NoteFavorites, Notes, NoteThreadMutings, NoteWatchings } from '@/models/index.js';
-import define from '../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, NoteThreadMutingsRepository, NoteFavoritesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -35,36 +37,42 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await Notes.findOneByOrFail({ id: ps.noteId });
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	const [favorite, watching, threadMuting] = await Promise.all([
-		NoteFavorites.count({
-			where: {
-				userId: user.id,
-				noteId: note.id,
-			},
-			take: 1,
-		}),
-		NoteWatchings.count({
-			where: {
-				userId: user.id,
-				noteId: note.id,
-			},
-			take: 1,
-		}),
-		NoteThreadMutings.count({
-			where: {
-				userId: user.id,
-				threadId: note.threadId || note.id,
-			},
-			take: 1,
-		}),
-	]);
+		@Inject(DI.noteThreadMutingsRepository)
+		private noteThreadMutingsRepository: NoteThreadMutingsRepository,
+
+		@Inject(DI.noteFavoritesRepository)
+		private noteFavoritesRepository: NoteFavoritesRepository,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.notesRepository.findOneByOrFail({ id: ps.noteId });
+
+			const [favorite, threadMuting] = await Promise.all([
+				this.noteFavoritesRepository.count({
+					where: {
+						userId: me.id,
+						noteId: note.id,
+					},
+					take: 1,
+				}),
+				this.noteThreadMutingsRepository.count({
+					where: {
+						userId: me.id,
+						threadId: note.threadId || note.id,
+					},
+					take: 1,
+				}),
+			]);
 
-	return {
-		isFavorited: favorite !== 0,
-		isWatching: watching !== 0,
-		isMutedThread: threadMuting !== 0,
-	};
-});
+			return {
+				isFavorited: favorite !== 0,
+				isMutedThread: threadMuting !== 0,
+			};
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/thread-muting/create.ts b/packages/backend/src/server/api/endpoints/notes/thread-muting/create.ts
index cf360526d3..1c83adddff 100644
--- a/packages/backend/src/server/api/endpoints/notes/thread-muting/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/thread-muting/create.ts
@@ -1,8 +1,10 @@
-import { Notes, NoteThreadMutings } from '@/models/index.js';
-import { genId } from '@/misc/gen-id.js';
-import readNote from '@/services/note/read.js';
-import define from '../../../define.js';
-import { getNote } from '../../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, NoteThreadMutingsRepository } from '@/models/index.js';
+import { IdService } from '@/core/IdService.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { NoteReadService } from '@/core/NoteReadService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -30,26 +32,41 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	const mutedNotes = await Notes.find({
-		where: [{
-			id: note.threadId || note.id,
-		}, {
-			threadId: note.threadId || note.id,
-		}],
-	});
+		@Inject(DI.noteThreadMutingsRepository)
+		private noteThreadMutingsRepository: NoteThreadMutingsRepository,
 
-	await readNote(user.id, mutedNotes);
+		private getterService: GetterService,
+		private noteReadService: NoteReadService,
+		private idService: IdService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	await NoteThreadMutings.insert({
-		id: genId(),
-		createdAt: new Date(),
-		threadId: note.threadId || note.id,
-		userId: user.id,
-	});
-});
+			const mutedNotes = await this.notesRepository.find({
+				where: [{
+					id: note.threadId || note.id,
+				}, {
+					threadId: note.threadId || note.id,
+				}],
+			});
+
+			await this.noteReadService.read(me.id, mutedNotes);
+
+			await this.noteThreadMutingsRepository.insert({
+				id: this.idService.genId(),
+				createdAt: new Date(),
+				threadId: note.threadId || note.id,
+				userId: me.id,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/thread-muting/delete.ts b/packages/backend/src/server/api/endpoints/notes/thread-muting/delete.ts
index ac310d0fe6..1f896734d1 100644
--- a/packages/backend/src/server/api/endpoints/notes/thread-muting/delete.ts
+++ b/packages/backend/src/server/api/endpoints/notes/thread-muting/delete.ts
@@ -1,6 +1,8 @@
-import { NoteThreadMutings } from '@/models/index.js';
-import define from '../../../define.js';
-import { getNote } from '../../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NoteThreadMutingsRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { GetterService } from '@/server/api/common/GetterService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -28,14 +30,24 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.noteThreadMutingsRepository)
+		private noteThreadMutingsRepository: NoteThreadMutingsRepository,
 
-	await NoteThreadMutings.delete({
-		threadId: note.threadId || note.id,
-		userId: user.id,
-	});
-});
+		private getterService: GetterService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
+
+			await this.noteThreadMutingsRepository.delete({
+				threadId: note.threadId || note.id,
+				userId: me.id,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/timeline.ts b/packages/backend/src/server/api/endpoints/notes/timeline.ts
index 22f4925175..53a1ae1348 100644
--- a/packages/backend/src/server/api/endpoints/notes/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/timeline.ts
@@ -1,14 +1,12 @@
 import { Brackets } from 'typeorm';
-import { Notes, Followings } from '@/models/index.js';
-import { activeUsersChart } from '@/services/chart/index.js';
-import define from '../../define.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
-import { generateMutedUserQuery } from '../../common/generate-muted-user-query.js';
-import { generateRepliesQuery } from '../../common/generate-replies-query.js';
-import { generateMutedNoteQuery } from '../../common/generate-muted-note-query.js';
-import { generateChannelQuery } from '../../common/generate-channel-query.js';
-import { generateBlockedUserQuery } from '../../common/generate-block-query.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, FollowingsRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { MetaService } from '@/core/MetaService.js';
+import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -47,85 +45,100 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const hasFollowing = (await Followings.count({
-		where: {
-			followerId: user.id,
-		},
-		take: 1,
-	})) !== 0;
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	//#region Construct query
-	const followingQuery = Followings.createQueryBuilder('following')
-		.select('following.followeeId')
-		.where('following.followerId = :followerId', { followerId: user.id });
+		@Inject(DI.followingsRepository)
+		private followingsRepository: FollowingsRepository,
 
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'),
-		ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-		.andWhere(new Brackets(qb => { qb
-			.where('note.userId = :meId', { meId: user.id });
-		if (hasFollowing) qb.orWhere(`note.userId IN (${ followingQuery.getQuery() })`);
-		}))
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner')
-		.setParameters(followingQuery.getParameters());
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private activeUsersChart: ActiveUsersChart,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const hasFollowing = (await this.followingsRepository.count({
+				where: {
+					followerId: me.id,
+				},
+				take: 1,
+			})) !== 0;
 
-	generateChannelQuery(query, user);
-	generateRepliesQuery(query, user);
-	generateVisibilityQuery(query, user);
-	generateMutedUserQuery(query, user);
-	generateMutedNoteQuery(query, user);
-	generateBlockedUserQuery(query, user);
+			//#region Construct query
+			const followingQuery = this.followingsRepository.createQueryBuilder('following')
+				.select('following.followeeId')
+				.where('following.followerId = :followerId', { followerId: me.id });
 
-	if (ps.includeMyRenotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.userId != :meId', { meId: user.id });
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
+				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
+				.andWhere(new Brackets(qb => { qb
+					.where('note.userId = :meId', { meId: me.id });
+				if (hasFollowing) qb.orWhere(`note.userId IN (${ followingQuery.getQuery() })`);
+				}))
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner')
+				.setParameters(followingQuery.getParameters());
 
-	if (ps.includeRenotedMyNotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.renoteUserId != :meId', { meId: user.id });
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			this.queryService.generateChannelQuery(query, me);
+			this.queryService.generateRepliesQuery(query, me);
+			this.queryService.generateVisibilityQuery(query, me);
+			this.queryService.generateMutedUserQuery(query, me);
+			this.queryService.generateMutedNoteQuery(query, me);
+			this.queryService.generateBlockedUserQuery(query, me);
 
-	if (ps.includeLocalRenotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.renoteUserHost IS NOT NULL');
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			if (ps.includeMyRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.userId != :meId', { meId: me.id });
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	if (ps.withFiles) {
-		query.andWhere('note.fileIds != \'{}\'');
-	}
-	//#endregion
+			if (ps.includeRenotedMyNotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
+
+			if (ps.includeLocalRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteUserHost IS NOT NULL');
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	const timeline = await query.take(ps.limit).getMany();
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
+			}
+			//#endregion
 
-	process.nextTick(() => {
-		activeUsersChart.read(user);
-	});
+			const timeline = await query.take(ps.limit).getMany();
 
-	return await Notes.packMany(timeline, user);
-});
+			process.nextTick(() => {
+				this.activeUsersChart.read(me);
+			});
+
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/translate.ts b/packages/backend/src/server/api/endpoints/notes/translate.ts
index 5e40e7106f..c24f1e401e 100644
--- a/packages/backend/src/server/api/endpoints/notes/translate.ts
+++ b/packages/backend/src/server/api/endpoints/notes/translate.ts
@@ -1,12 +1,15 @@
 import { URLSearchParams } from 'node:url';
 import fetch from 'node-fetch';
-import config from '@/config/index.js';
-import { getAgentByUrl } from '@/misc/fetch.js';
-import { fetchMeta } from '@/misc/fetch-meta.js';
-import { Notes } from '@/models/index.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { Config } from '@/config.js';
+import { DI } from '@/di-symbols.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import { MetaService } from '@/core/MetaService.js';
+import { HttpRequestService } from '@/core/HttpRequestService.js';
 import { ApiError } from '../../error.js';
-import { getNote } from '../../common/getters.js';
-import define from '../../define.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -37,58 +40,74 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.config)
+		private config: Config,
+	
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	if (!(await Notes.isVisibleForMe(note, user ? user.id : null))) {
-		return 204; // TODO: 良い感じのエラー返す
-	}
+		private noteEntityService: NoteEntityService,
+		private getterService: GetterService,
+		private metaService: MetaService,
+		private httpRequestService: HttpRequestService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
 
-	if (note.text == null) {
-		return 204;
-	}
+			if (!(await this.noteEntityService.isVisibleForMe(note, me ? me.id : null))) {
+				return 204; // TODO: 良い感じのエラー返す
+			}
 
-	const instance = await fetchMeta();
+			if (note.text == null) {
+				return 204;
+			}
 
-	if (instance.deeplAuthKey == null) {
-		return 204; // TODO: 良い感じのエラー返す
-	}
+			const instance = await this.metaService.fetch();
 
-	let targetLang = ps.targetLang;
-	if (targetLang.includes('-')) targetLang = targetLang.split('-')[0];
+			if (instance.deeplAuthKey == null) {
+				return 204; // TODO: 良い感じのエラー返す
+			}
 
-	const params = new URLSearchParams();
-	params.append('auth_key', instance.deeplAuthKey);
-	params.append('text', note.text);
-	params.append('target_lang', targetLang);
+			let targetLang = ps.targetLang;
+			if (targetLang.includes('-')) targetLang = targetLang.split('-')[0];
 
-	const endpoint = instance.deeplIsPro ? 'https://api.deepl.com/v2/translate' : 'https://api-free.deepl.com/v2/translate';
+			const params = new URLSearchParams();
+			params.append('auth_key', instance.deeplAuthKey);
+			params.append('text', note.text);
+			params.append('target_lang', targetLang);
 
-	const res = await fetch(endpoint, {
-		method: 'POST',
-		headers: {
-			'Content-Type': 'application/x-www-form-urlencoded',
-			'User-Agent': config.userAgent,
-			Accept: 'application/json, */*',
-		},
-		body: params,
-		// TODO
-		//timeout: 10000,
-		agent: getAgentByUrl,
-	});
+			const endpoint = instance.deeplIsPro ? 'https://api.deepl.com/v2/translate' : 'https://api-free.deepl.com/v2/translate';
 
-	const json = (await res.json()) as {
+			const res = await fetch(endpoint, {
+				method: 'POST',
+				headers: {
+					'Content-Type': 'application/x-www-form-urlencoded',
+					'User-Agent': config.userAgent,
+					Accept: 'application/json, */*',
+				},
+				body: params,
+				// TODO
+				//timeout: 10000,
+				agent: (url) => this.httpRequestService.getAgentByUrl(url),
+			});
+
+			const json = (await res.json()) as {
 		translations: {
 			detected_source_language: string;
 			text: string;
 		}[];
 	};
 
-	return {
-		sourceLang: json.translations[0].detected_source_language,
-		text: json.translations[0].text,
-	};
-});
+			return {
+				sourceLang: json.translations[0].detected_source_language,
+				text: json.translations[0].text,
+			};
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/unrenote.ts b/packages/backend/src/server/api/endpoints/notes/unrenote.ts
index 3fba0efe0c..c0048888b4 100644
--- a/packages/backend/src/server/api/endpoints/notes/unrenote.ts
+++ b/packages/backend/src/server/api/endpoints/notes/unrenote.ts
@@ -1,9 +1,11 @@
 import ms from 'ms';
-import deleteNote from '@/services/note/delete.js';
-import { Notes, Users } from '@/models/index.js';
-import define from '../../define.js';
-import { getNote } from '../../common/getters.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { UsersRepository, NotesRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { NoteDeleteService } from '@/core/NoteDeleteService.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
+import { GetterService } from '../../common/GetterService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -36,18 +38,32 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
 
-	const renotes = await Notes.findBy({
-		userId: user.id,
-		renoteId: note.id,
-	});
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	for (const note of renotes) {
-		deleteNote(await Users.findOneByOrFail({ id: user.id }), note);
+		private getterService: GetterService,
+		private noteDeleteService: NoteDeleteService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const note = await this.getterService.getNote(ps.noteId).catch(err => {
+				if (err.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
+				throw err;
+			});
+
+			const renotes = await this.notesRepository.findBy({
+				userId: me.id,
+				renoteId: note.id,
+			});
+
+			for (const note of renotes) {
+				this.noteDeleteService.delete(await this.usersRepository.findOneByOrFail({ id: me.id }), note);
+			}
+		});
 	}
-});
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts b/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts
index e603a8f625..87a464578c 100644
--- a/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts
@@ -1,10 +1,12 @@
 import { Brackets } from 'typeorm';
-import { UserLists, UserListJoinings, Notes } from '@/models/index.js';
-import { activeUsersChart } from '@/services/chart/index.js';
-import define from '../../define.js';
+import { Inject, Injectable } from '@nestjs/common';
+import { NotesRepository, UserListsRepository, UserListJoiningsRepository } from '@/models/index.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { DI } from '@/di-symbols.js';
 import { ApiError } from '../../error.js';
-import { makePaginationQuery } from '../../common/make-pagination-query.js';
-import { generateVisibilityQuery } from '../../common/generate-visibility-query.js';
 
 export const meta = {
 	tags: ['notes', 'lists'],
@@ -52,72 +54,90 @@ export const paramDef = {
 } as const;
 
 // eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const list = await UserLists.findOneBy({
-		id: ps.listId,
-		userId: user.id,
-	});
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
 
-	if (list == null) {
-		throw new ApiError(meta.errors.noSuchList);
-	}
+		@Inject(DI.userListsRepository)
+		private userListsRepository: UserListsRepository,
 
-	//#region Construct query
-	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId)
-		.innerJoin(UserListJoinings.metadata.targetName, 'userListJoining', 'userListJoining.userId = note.userId')
-		.innerJoinAndSelect('note.user', 'user')
-		.leftJoinAndSelect('user.avatar', 'avatar')
-		.leftJoinAndSelect('user.banner', 'banner')
-		.leftJoinAndSelect('note.reply', 'reply')
-		.leftJoinAndSelect('note.renote', 'renote')
-		.leftJoinAndSelect('reply.user', 'replyUser')
-		.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
-		.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
-		.leftJoinAndSelect('renote.user', 'renoteUser')
-		.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
-		.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner')
-		.andWhere('userListJoining.userListId = :userListId', { userListId: list.id });
+		@Inject(DI.userListJoiningsRepository)
+		private userListJoiningsRepository: UserListJoiningsRepository,
 
-	generateVisibilityQuery(query, user);
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private activeUsersChart: ActiveUsersChart,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const list = await this.userListsRepository.findOneBy({
+				id: ps.listId,
+				userId: me.id,
+			});
 
-	if (ps.includeMyRenotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.userId != :meId', { meId: user.id });
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			if (list == null) {
+				throw new ApiError(meta.errors.noSuchList);
+			}
 
-	if (ps.includeRenotedMyNotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.renoteUserId != :meId', { meId: user.id });
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			//#region Construct query
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
+				.innerJoin(this.userListJoiningsRepository.metadata.targetName, 'userListJoining', 'userListJoining.userId = note.userId')
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('user.avatar', 'avatar')
+				.leftJoinAndSelect('user.banner', 'banner')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('replyUser.avatar', 'replyUserAvatar')
+				.leftJoinAndSelect('replyUser.banner', 'replyUserBanner')
+				.leftJoinAndSelect('renote.user', 'renoteUser')
+				.leftJoinAndSelect('renoteUser.avatar', 'renoteUserAvatar')
+				.leftJoinAndSelect('renoteUser.banner', 'renoteUserBanner')
+				.andWhere('userListJoining.userListId = :userListId', { userListId: list.id });
 
-	if (ps.includeLocalRenotes === false) {
-		query.andWhere(new Brackets(qb => {
-			qb.orWhere('note.renoteUserHost IS NOT NULL');
-			qb.orWhere('note.renoteId IS NULL');
-			qb.orWhere('note.text IS NOT NULL');
-			qb.orWhere('note.fileIds != \'{}\'');
-			qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
-		}));
-	}
+			this.queryService.generateVisibilityQuery(query, me);
 
-	if (ps.withFiles) {
-		query.andWhere('note.fileIds != \'{}\'');
-	}
-	//#endregion
+			if (ps.includeMyRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.userId != :meId', { meId: me.id });
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	const timeline = await query.take(ps.limit).getMany();
+			if (ps.includeRenotedMyNotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteUserId != :meId', { meId: me.id });
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	activeUsersChart.read(user);
+			if (ps.includeLocalRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteUserHost IS NOT NULL');
+					qb.orWhere('note.renoteId IS NULL');
+					qb.orWhere('note.text IS NOT NULL');
+					qb.orWhere('note.fileIds != \'{}\'');
+					qb.orWhere('0 < (SELECT COUNT(*) FROM poll WHERE poll."noteId" = note.id)');
+				}));
+			}
 
-	return await Notes.packMany(timeline, user);
-});
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
+			}
+			//#endregion
+
+			const timeline = await query.take(ps.limit).getMany();
+
+			this.activeUsersChart.read(me);
+
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/notes/watching/create.ts b/packages/backend/src/server/api/endpoints/notes/watching/create.ts
deleted file mode 100644
index 7d482b0732..0000000000
--- a/packages/backend/src/server/api/endpoints/notes/watching/create.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-import watch from '@/services/note/watch.js';
-import define from '../../../define.js';
-import { getNote } from '../../../common/getters.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['notes'],
-
-	requireCredential: true,
-
-	kind: 'write:account',
-
-	errors: {
-		noSuchNote: {
-			message: 'No such note.',
-			code: 'NO_SUCH_NOTE',
-			id: 'ea0e37a6-90a3-4f58-ba6b-c328ca206fc7',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		noteId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['noteId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
-
-	await watch(user.id, note);
-});
diff --git a/packages/backend/src/server/api/endpoints/notes/watching/delete.ts b/packages/backend/src/server/api/endpoints/notes/watching/delete.ts
deleted file mode 100644
index 2c1a2e5fbd..0000000000
--- a/packages/backend/src/server/api/endpoints/notes/watching/delete.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-import unwatch from '@/services/note/unwatch.js';
-import define from '../../../define.js';
-import { getNote } from '../../../common/getters.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['notes'],
-
-	requireCredential: true,
-
-	kind: 'write:account',
-
-	errors: {
-		noSuchNote: {
-			message: 'No such note.',
-			code: 'NO_SUCH_NOTE',
-			id: '09b3695c-f72c-4731-a428-7cff825fc82e',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		noteId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['noteId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-export default define(meta, paramDef, async (ps, user) => {
-	const note = await getNote(ps.noteId).catch(e => {
-		if (e.id === '9725d0ce-ba28-4dde-95a7-2cbb2c15de24') throw new ApiError(meta.errors.noSuchNote);
-		throw e;
-	});
-
-	await unwatch(user.id, note);
-});