import { Inject, Injectable } from '@nestjs/common';
import type { FlashsRepository, FlashLikesRepository } from '@/models/index.js';
import { Endpoint } from '@/server/api/endpoint-base.js';
import { DI } from '@/di-symbols.js';
import { ApiError } from '../../error.js';

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

	requireCredential: true,

	prohibitMoved: true,

	kind: 'write:flash-likes',

	errors: {
		noSuchFlash: {
			message: 'No such flash.',
			code: 'NO_SUCH_FLASH',
			id: 'afe8424a-a69e-432d-a5f2-2f0740c62410',
		},

		notLiked: {
			message: 'You have not liked that flash.',
			code: 'NOT_LIKED',
			id: '755f25a7-9871-4f65-9f34-51eaad9ae0ac',
		},
	},
} as const;

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

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

		@Inject(DI.flashLikesRepository)
		private flashLikesRepository: FlashLikesRepository,
	) {
		super(meta, paramDef, async (ps, me) => {
			const flash = await this.flashsRepository.findOneBy({ id: ps.flashId });
			if (flash == null) {
				throw new ApiError(meta.errors.noSuchFlash);
			}

			const exist = await this.flashLikesRepository.findOneBy({
				flashId: flash.id,
				userId: me.id,
			});

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

			// Delete like
			await this.flashLikesRepository.delete(exist.id);

			this.flashsRepository.decrement({ id: flash.id }, 'likedCount', 1);
		});
	}
}