1 files changed, 81 insertions, 0 deletions
diff --git a/packages/backend/src/server/api/endpoints/notes/conversation.ts b/packages/backend/src/server/api/endpoints/notes/conversation.ts
new file mode 100644
index 0000000000..0fe323ea00
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/notes/conversation.ts
@@ -0,0 +1,81 @@
+import $ from 'cafy';
+import { ID } from '@/misc/cafy-id';
+import define from '../../define';
+import { ApiError } from '../../error';
+import { getNote } from '../../common/getters';
+import { Note } from '@/models/entities/note';
+import { Notes } from '@/models/index';
+
+export const meta = {
+	tags: ['notes'],
+
+	requireCredential: false as const,
+
+	params: {
+		noteId: {
+			validator: $.type(ID),
+		},
+
+		limit: {
+			validator: $.optional.num.range(1, 100),
+			default: 10
+		},
+
+		offset: {
+			validator: $.optional.num.min(0),
+			default: 0
+		},
+	},
+
+	res: {
+		type: 'array' as const,
+		optional: false as const, nullable: false as const,
+		items: {
+			type: 'object' as const,
+			optional: false as const, nullable: false as const,
+			ref: 'Note',
+		}
+	},
+
+	errors: {
+		noSuchNote: {
+			message: 'No such note.',
+			code: 'NO_SUCH_NOTE',
+			id: 'e1035875-9551-45ec-afa8-1ded1fcb53c8'
+		}
+	}
+};
+
+export default define(meta, 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;
+	});
+
+	const conversation: Note[] = [];
+	let i = 0;
+
+	async function get(id: any) {
+		i++;
+		const p = await Notes.findOne(id);
+		if (p == null) return;
+
+		if (i > ps.offset!) {
+			conversation.push(p);
+		}
+
+		if (conversation.length == ps.limit!) {
+			return;
+		}
+
+		if (p.replyId) {
+			await get(p.replyId);
+		}
+	}
+
+	if (note.replyId) {
+		await get(note.replyId);
+	}
+
+	return await Notes.packMany(conversation, user);
+});