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

export const meta = {
	tags: ['account'],

	requireCredential: true,

	kind: 'write:mutes',

	errors: {
		noSuchUser: {
			message: 'No such user.',
			code: 'NO_SUCH_USER',
			id: '6fef56f3-e765-4957-88e5-c6f65329b8a5',
		},

		muteeIsYourself: {
			message: 'Mutee is yourself.',
			code: 'MUTEE_IS_YOURSELF',
			id: 'a4619cb2-5f23-484b-9301-94c903074e10',
		},

		alreadyMuting: {
			message: 'You are already muting that user.',
			code: 'ALREADY_MUTING',
			id: '7e7359cb-160c-4956-b08f-4d1c653cd007',
		},
	},
} as const;

export const paramDef = {
	type: 'object',
	properties: {
		userId: { type: 'string', format: 'misskey:id' },
		expiresAt: {
			type: 'integer',
			nullable: true,
			description: 'A Unix Epoch timestamp that must lie in the future. `null` means an indefinite mute.',
		},
	},
	required: ['userId'],
} as const;

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

		private globalEventService: GlobalEventService,
		private getterService: GetterService,
		private idService: IdService,
	) {
		super(meta, paramDef, async (ps, me) => {
			const muter = me;

			// 自分自身
			if (me.id === ps.userId) {
				throw new ApiError(meta.errors.muteeIsYourself);
			}

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

			// Check if already muting
			const exist = await this.mutingsRepository.findOneBy({
				muterId: muter.id,
				muteeId: mutee.id,
			});

			if (exist != null) {
				throw new ApiError(meta.errors.alreadyMuting);
			}

			if (ps.expiresAt && ps.expiresAt <= Date.now()) {
				return;
			}

			// Create mute
			await this.mutingsRepository.insert({
				id: this.idService.genId(),
				createdAt: new Date(),
				expiresAt: ps.expiresAt ? new Date(ps.expiresAt) : null,
				muterId: muter.id,
				muteeId: mutee.id,
			} as Muting);

			this.globalEventService.publishUserEvent(me.id, 'mute', mutee);
		});
	}
}