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

import ms from 'ms';
import { In } from 'typeorm';
import { Inject, Injectable } from '@nestjs/common';
import { isPureRenote } from '@/misc/is-renote.js';
import type { MiUser } from '@/models/User.js';
import type {
	UsersRepository,
	NotesRepository,
	BlockingsRepository,
	DriveFilesRepository,
	ChannelsRepository,
	NoteScheduleRepository,
} from '@/models/_.js';
import type { MiDriveFile } from '@/models/DriveFile.js';
import type { MiNote } from '@/models/Note.js';
import type { MiChannel } from '@/models/Channel.js';
import { Endpoint } from '@/server/api/endpoint-base.js';
import { DI } from '@/di-symbols.js';
import { QueueService } from '@/core/QueueService.js';
import { IdService } from '@/core/IdService.js';
import { MiScheduleNoteType } from '@/models/NoteSchedule.js';
import { RoleService } from '@/core/RoleService.js';
import { ApiError } from '../../../error.js';

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

	requireCredential: true,

	prohibitMoved: true,

	limit: {
		duration: ms('1hour'),
		max: 300,
	},

	kind: 'write:notes-schedule',

	errors: {
		scheduleNoteMax: {
			message: 'Schedule note max.',
			code: 'SCHEDULE_NOTE_MAX',
			id: '168707c3-e7da-4031-989e-f42aa3a274b2',
		},
		noSuchRenoteTarget: {
			message: 'No such renote target.',
			code: 'NO_SUCH_RENOTE_TARGET',
			id: 'b5c90186-4ab0-49c8-9bba-a1f76c282ba4',
		},

		cannotReRenote: {
			message: 'You can not Renote a pure Renote.',
			code: 'CANNOT_RENOTE_TO_A_PURE_RENOTE',
			id: 'fd4cc33e-2a37-48dd-99cc-9b806eb2031a',
		},

		cannotRenoteDueToVisibility: {
			message: 'You can not Renote due to target visibility.',
			code: 'CANNOT_RENOTE_DUE_TO_VISIBILITY',
			id: 'be9529e9-fe72-4de0-ae43-0b363c4938af',
		},

		noSuchReplyTarget: {
			message: 'No such reply target.',
			code: 'NO_SUCH_REPLY_TARGET',
			id: '749ee0f6-d3da-459a-bf02-282e2da4292c',
		},

		cannotReplyToPureRenote: {
			message: 'You can not reply to a pure Renote.',
			code: 'CANNOT_REPLY_TO_A_PURE_RENOTE',
			id: '3ac74a84-8fd5-4bb0-870f-01804f82ce15',
		},

		cannotCreateAlreadyExpiredPoll: {
			message: 'Poll is already expired.',
			code: 'CANNOT_CREATE_ALREADY_EXPIRED_POLL',
			id: '04da457d-b083-4055-9082-955525eda5a5',
		},

		cannotCreateAlreadyExpiredSchedule: {
			message: 'Schedule is already expired.',
			code: 'CANNOT_CREATE_ALREADY_EXPIRED_SCHEDULE',
			id: '8a9bfb90-fc7e-4878-a3e8-d97faaf5fb07',
		},

		noSuchChannel: {
			message: 'No such channel.',
			code: 'NO_SUCH_CHANNEL',
			id: 'b1653923-5453-4edc-b786-7c4f39bb0bbb',
		},
		noSuchSchedule: {
			message: 'No such schedule.',
			code: 'NO_SUCH_SCHEDULE',
			id: '44dee229-8da1-4a61-856d-e3a4bbc12032',
		},
		youHaveBeenBlocked: {
			message: 'You have been blocked by this user.',
			code: 'YOU_HAVE_BEEN_BLOCKED',
			id: 'b390d7e1-8a5e-46ed-b625-06271cafd3d3',
		},

		noSuchFile: {
			message: 'Some files are not found.',
			code: 'NO_SUCH_FILE',
			id: 'b6992544-63e7-67f0-fa7f-32444b1b5306',
		},

		cannotRenoteOutsideOfChannel: {
			message: 'Cannot renote outside of channel.',
			code: 'CANNOT_RENOTE_OUTSIDE_OF_CHANNEL',
			id: '33510210-8452-094c-6227-4a6c05d99f00',
		},
	},
} as const;

export const paramDef = {
	type: 'object',
	properties: {
		visibility: { type: 'string', enum: ['public', 'home', 'followers', 'specified'], default: 'public' },
		visibleUserIds: { type: 'array', uniqueItems: true, items: {
			type: 'string', format: 'misskey:id',
		} },
		cw: { type: 'string', nullable: true, minLength: 1, maxLength: 100 },
		reactionAcceptance: { type: 'string', nullable: true, enum: [null, 'likeOnly', 'likeOnlyForRemote', 'nonSensitiveOnly', 'nonSensitiveOnlyForLocalLikeOnlyForRemote'], default: null },
		noExtractMentions: { type: 'boolean', default: false },
		noExtractHashtags: { type: 'boolean', default: false },
		noExtractEmojis: { type: 'boolean', default: false },
		replyId: { type: 'string', format: 'misskey:id', nullable: true },
		renoteId: { type: 'string', format: 'misskey:id', nullable: true },

		// anyOf内にバリデーションを書いても最初の一つしかチェックされない
		// See https://github.com/misskey-dev/misskey/pull/10082
		text: {
			type: 'string',
			minLength: 1,
			nullable: true,
		},
		fileIds: {
			type: 'array',
			uniqueItems: true,
			minItems: 1,
			maxItems: 16,
			items: { type: 'string', format: 'misskey:id' },
		},
		mediaIds: {
			type: 'array',
			uniqueItems: true,
			minItems: 1,
			maxItems: 16,
			items: { type: 'string', format: 'misskey:id' },
		},
		poll: {
			type: 'object',
			nullable: true,
			properties: {
				choices: {
					type: 'array',
					uniqueItems: true,
					minItems: 2,
					maxItems: 10,
					items: { type: 'string', minLength: 1, maxLength: 50 },
				},
				multiple: { type: 'boolean' },
				expiresAt: { type: 'integer', nullable: true },
				expiredAfter: { type: 'integer', nullable: true, minimum: 1 },
			},
			required: ['choices'],
		},
		scheduleNote: {
			type: 'object',
			nullable: false,
			properties: {
				scheduledAt: { type: 'integer', nullable: false },
			},
		},
	},
	// (re)note with text, files and poll are optional
	anyOf: [
		{ required: ['text'] },
		{ required: ['renoteId'] },
		{ required: ['fileIds'] },
		{ required: ['mediaIds'] },
		{ required: ['poll'] },
	],
	required: ['scheduleNote'],
} as const;

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

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

		@Inject(DI.noteScheduleRepository)
		private noteScheduleRepository: NoteScheduleRepository,

		@Inject(DI.blockingsRepository)
		private blockingsRepository: BlockingsRepository,

		@Inject(DI.driveFilesRepository)
		private driveFilesRepository: DriveFilesRepository,

		@Inject(DI.channelsRepository)
		private channelsRepository: ChannelsRepository,

		private queueService: QueueService,
		private roleService: RoleService,
		private idService: IdService,
	) {
		super(meta, paramDef, async (ps, me) => {
			const scheduleNoteCount = await this.noteScheduleRepository.countBy({ userId: me.id });
			const scheduleNoteMax = (await this.roleService.getUserPolicies(me.id)).scheduleNoteMax;
			if (scheduleNoteCount >= scheduleNoteMax) {
				throw new ApiError(meta.errors.scheduleNoteMax);
			}
			let visibleUsers: MiUser[] = [];
			if (ps.visibleUserIds) {
				visibleUsers = await this.usersRepository.findBy({
					id: In(ps.visibleUserIds),
				});
			}

			let files: MiDriveFile[] = [];
			const fileIds = ps.fileIds ?? ps.mediaIds ?? null;
			if (fileIds != null) {
				files = await this.driveFilesRepository.createQueryBuilder('file')
					.where('file.userId = :userId AND file.id IN (:...fileIds)', {
						userId: me.id,
						fileIds,
					})
					.orderBy('array_position(ARRAY[:...fileIds], "id"::text)')
					.setParameters({ fileIds })
					.getMany();

				if (files.length !== fileIds.length) {
					throw new ApiError(meta.errors.noSuchFile);
				}
			}

			let renote: MiNote | null = null;
			if (ps.renoteId != null) {
				// Fetch renote to note
				renote = await this.notesRepository.findOneBy({ id: ps.renoteId });

				if (renote == null) {
					throw new ApiError(meta.errors.noSuchRenoteTarget);
				} else if (isPureRenote(renote)) {
					throw new ApiError(meta.errors.cannotReRenote);
				}

				// Check blocking
				if (renote.userId !== me.id) {
					const blockExist = await this.blockingsRepository.exist({
						where: {
							blockerId: renote.userId,
							blockeeId: me.id,
						},
					});
					if (blockExist) {
						throw new ApiError(meta.errors.youHaveBeenBlocked);
					}
				}

				if (renote.visibility === 'followers' && renote.userId !== me.id) {
					// 他人のfollowers noteはreject
					throw new ApiError(meta.errors.cannotRenoteDueToVisibility);
				} else if (renote.visibility === 'specified') {
					// specified / direct noteはreject
					throw new ApiError(meta.errors.cannotRenoteDueToVisibility);
				}
			}

			let reply: MiNote | null = null;
			if (ps.replyId != null) {
				// Fetch reply
				reply = await this.notesRepository.findOneBy({ id: ps.replyId });

				if (reply == null) {
					throw new ApiError(meta.errors.noSuchReplyTarget);
				} else if (isPureRenote(reply)) {
					throw new ApiError(meta.errors.cannotReplyToPureRenote);
				}

				// Check blocking
				if (reply.userId !== me.id) {
					const blockExist = await this.blockingsRepository.exist({
						where: {
							blockerId: reply.userId,
							blockeeId: me.id,
						},
					});
					if (blockExist) {
						throw new ApiError(meta.errors.youHaveBeenBlocked);
					}
				}
			}

			if (ps.poll) {
				let scheduleNote_scheduledAt = Date.now();
				if (typeof ps.scheduleNote.scheduledAt === 'number') {
					scheduleNote_scheduledAt = ps.scheduleNote.scheduledAt;
				}
				if (typeof ps.poll.expiresAt === 'number') {
					if (ps.poll.expiresAt < scheduleNote_scheduledAt) {
						throw new ApiError(meta.errors.cannotCreateAlreadyExpiredPoll);
					}
				} else if (typeof ps.poll.expiredAfter === 'number') {
					ps.poll.expiresAt = scheduleNote_scheduledAt + ps.poll.expiredAfter;
				}
			}
			if (typeof ps.scheduleNote.scheduledAt === 'number') {
				if (ps.scheduleNote.scheduledAt < Date.now()) {
					throw new ApiError(meta.errors.cannotCreateAlreadyExpiredSchedule);
				}
			} else {
				throw new ApiError(meta.errors.cannotCreateAlreadyExpiredSchedule);
			}
			const note:MiScheduleNoteType = {
				createdAt: new Date(ps.scheduleNote.scheduledAt!).toISOString(),
				files: files.map(f => f.id),
				poll: ps.poll ? {
					choices: ps.poll.choices,
					multiple: ps.poll.multiple ?? false,
					expiresAt: ps.poll.expiresAt ? new Date(ps.poll.expiresAt).toISOString() : null,
				} : undefined,
				text: ps.text ?? undefined,
				reply: reply?.id,
				renote: renote?.id,
				cw: ps.cw,
				localOnly: false,
				reactionAcceptance: ps.reactionAcceptance,
				visibility: ps.visibility,
				visibleUsers,
				apMentions: ps.noExtractMentions ? [] : undefined,
				apHashtags: ps.noExtractHashtags ? [] : undefined,
				apEmojis: ps.noExtractEmojis ? [] : undefined,
			};

			if (ps.scheduleNote.scheduledAt) {
				me.token = null;
				const noteId = this.idService.gen(new Date().getTime());
				await this.noteScheduleRepository.insert({
					id: noteId,
					note: note,
					userId: me.id,
					scheduledAt: new Date(ps.scheduleNote.scheduledAt),
				});

				const delay = new Date(ps.scheduleNote.scheduledAt).getTime() - Date.now();
				await this.queueService.ScheduleNotePostQueue.add(String(delay), {
					scheduleNoteId: noteId,
				}, {
					delay,
					removeOnComplete: true,
					jobId: noteId,
				});
			}

			return '';
		});
	}
}