/*
 * SPDX-FileCopyrightText: syuilo and other misskey contributors
 * SPDX-License-Identifier: AGPL-3.0-only
 */

import { Brackets } from 'typeorm';
import { Inject, Injectable } from '@nestjs/common';
import * as Redis from 'ioredis';
import type { NotesRepository, UserListsRepository, UserListMembershipsRepository, MiNote } from '@/models/_.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 { CacheService } from '@/core/CacheService.js';
import { IdService } from '@/core/IdService.js';
import { isUserRelated } from '@/misc/is-user-related.js';
import { FunoutTimelineService } from '@/core/FunoutTimelineService.js';
import { ApiError } from '../../error.js';

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

	requireCredential: true,

	res: {
		type: 'array',
		optional: false, nullable: false,
		items: {
			type: 'object',
			optional: false, nullable: false,
			ref: 'Note',
		},
	},

	errors: {
		noSuchList: {
			message: 'No such list.',
			code: 'NO_SUCH_LIST',
			id: '8fb1fbd5-e476-4c37-9fb0-43d55b63a2ff',
		},
	},
} as const;

export const paramDef = {
	type: 'object',
	properties: {
		listId: { type: 'string', format: 'misskey:id' },
		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
		sinceId: { type: 'string', format: 'misskey:id' },
		untilId: { type: 'string', format: 'misskey:id' },
		sinceDate: { type: 'integer' },
		untilDate: { type: 'integer' },
		includeMyRenotes: { type: 'boolean', default: true },
		includeRenotedMyNotes: { type: 'boolean', default: true },
		includeLocalRenotes: { type: 'boolean', default: true },
		withRenotes: { type: 'boolean', default: true },
		withFiles: {
			type: 'boolean',
			default: false,
			description: 'Only show notes that have attached files.',
		},
	},
	required: ['listId'],
} as const;

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

		@Inject(DI.notesRepository)
		private notesRepository: NotesRepository,

		@Inject(DI.userListsRepository)
		private userListsRepository: UserListsRepository,

		private noteEntityService: NoteEntityService,
		private activeUsersChart: ActiveUsersChart,
		private cacheService: CacheService,
		private idService: IdService,
		private funoutTimelineService: FunoutTimelineService,
	) {
		super(meta, paramDef, async (ps, me) => {
			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
			const sinceId = ps.sinceId ?? (ps.sinceDate ? this.idService.gen(ps.sinceDate!) : null);

			const list = await this.userListsRepository.findOneBy({
				id: ps.listId,
				userId: me.id,
			});

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

			const [
				userIdsWhoMeMuting,
				userIdsWhoMeMutingRenotes,
				userIdsWhoBlockingMe,
			] = await Promise.all([
				this.cacheService.userMutingsCache.fetch(me.id),
				this.cacheService.renoteMutingsCache.fetch(me.id),
				this.cacheService.userBlockedCache.fetch(me.id),
			]);

			let noteIds = await this.funoutTimelineService.get(ps.withFiles ? `userListTimelineWithFiles:${list.id}` : `userListTimeline:${list.id}`, untilId, sinceId);
			noteIds = noteIds.slice(0, ps.limit);

			if (noteIds.length === 0) {
				return [];
			}

			const query = this.notesRepository.createQueryBuilder('note')
				.where('note.id IN (:...noteIds)', { noteIds: noteIds })
				.innerJoinAndSelect('note.user', 'user')
				.leftJoinAndSelect('note.reply', 'reply')
				.leftJoinAndSelect('note.renote', 'renote')
				.leftJoinAndSelect('reply.user', 'replyUser')
				.leftJoinAndSelect('renote.user', 'renoteUser')
				.leftJoinAndSelect('note.channel', 'channel');

			let timeline = await query.getMany();

			timeline = timeline.filter(note => {
				if (note.userId === me.id) {
					return true;
				}
				if (isUserRelated(note, userIdsWhoBlockingMe)) return false;
				if (isUserRelated(note, userIdsWhoMeMuting)) return false;
				if (note.renoteId) {
					if (note.text == null && note.fileIds.length === 0 && !note.hasPoll) {
						if (isUserRelated(note, userIdsWhoMeMutingRenotes)) return false;
						if (ps.withRenotes === false) return false;
					}
				}

				return true;
			});

			// TODO: フィルタした結果件数が足りなかった場合の対応

			timeline.sort((a, b) => a.id > b.id ? -1 : 1);

			this.activeUsersChart.read(me);

			return await this.noteEntityService.packMany(timeline, me);
		});
	}
}
