import { Inject, Injectable } from '@nestjs/common';
import type { UserListsRepository, UserListJoiningsRepository } from '@/models/index.js';
import { Endpoint } from '@/server/api/endpoint-base.js';
import { UserEntityService } from '@/core/entities/UserEntityService.js';
import { GetterService } from '@/server/api/GetterService.js';
import { GlobalEventService } from '@/core/GlobalEventService.js';
import { DI } from '@/di-symbols.js';
import { ApiError } from '../../../error.js';

export const meta = {
	tags: ['lists', 'users'],

	requireCredential: true,

	prohibitMoved: true,

	kind: 'write:account',

	description: 'Remove a user from a list.',

	errors: {
		noSuchList: {
			message: 'No such list.',
			code: 'NO_SUCH_LIST',
			id: '7f44670e-ab16-43b8-b4c1-ccd2ee89cc02',
		},

		noSuchUser: {
			message: 'No such user.',
			code: 'NO_SUCH_USER',
			id: '588e7f72-c744-4a61-b180-d354e912bda2',
		},
	},
} as const;

export const paramDef = {
	type: 'object',
	properties: {
		listId: { type: 'string', format: 'misskey:id' },
		userId: { type: 'string', format: 'misskey:id' },
	},
	required: ['listId', 'userId'],
} as const;

// eslint-disable-next-line import/no-default-export
@Injectable()
export default class extends Endpoint<typeof meta, typeof paramDef> {
	constructor(
		@Inject(DI.userListsRepository)
		private userListsRepository: UserListsRepository,

		@Inject(DI.userListJoiningsRepository)
		private userListJoiningsRepository: UserListJoiningsRepository,

		private userEntityService: UserEntityService,
		private getterService: GetterService,
		private globalEventService: GlobalEventService,
	) {
		super(meta, paramDef, async (ps, me) => {
			// Fetch the list
			const userList = await this.userListsRepository.findOneBy({
				id: ps.listId,
				userId: me.id,
			});

			if (userList == null) {
				throw new ApiError(meta.errors.noSuchList);
			}

			// Fetch the user
			const user = await this.getterService.getUser(ps.userId).catch(err => {
				if (err.id === '15348ddd-432d-49c2-8a5a-8069753becff') throw new ApiError(meta.errors.noSuchUser);
				throw err;
			});

			// Pull the user
			await this.userListJoiningsRepository.delete({ userListId: userList.id, userId: user.id });

			this.globalEventService.publishUserListStream(userList.id, 'userRemoved', await this.userEntityService.pack(user));
		});
	}
}
