import { IsNull, MoreThan } from 'typeorm';
import { Inject, Injectable } from '@nestjs/common';
import type { AdsRepository, EmojisRepository, UsersRepository } from '@/models/index.js';
import { MAX_NOTE_TEXT_LENGTH, DB_MAX_NOTE_TEXT_LENGTH } from '@/const.js';
import { Endpoint } from '@/server/api/endpoint-base.js';
import { UserEntityService } from '@/core/entities/UserEntityService.js';
import { EmojiEntityService } from '@/core/entities/EmojiEntityService.js';
import { MetaService } from '@/core/MetaService.js';
import type { Config } from '@/config.js';
import { DI } from '@/di-symbols.js';

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

	requireCredential: false,

	res: {
		type: 'object',
		optional: false, nullable: false,
		properties: {
			maintainerName: {
				type: 'string',
				optional: false, nullable: true,
			},
			maintainerEmail: {
				type: 'string',
				optional: false, nullable: true,
			},
			version: {
				type: 'string',
				optional: false, nullable: false,
			},
			name: {
				type: 'string',
				optional: false, nullable: false,
			},
			uri: {
				type: 'string',
				optional: false, nullable: false,
				format: 'url',
				example: 'https://misskey.example.com',
			},
			description: {
				type: 'string',
				optional: false, nullable: true,
			},
			langs: {
				type: 'array',
				optional: false, nullable: false,
				items: {
					type: 'string',
					optional: false, nullable: false,
				},
			},
			tosUrl: {
				type: 'string',
				optional: false, nullable: true,
			},
			repositoryUrl: {
				type: 'string',
				optional: false, nullable: false,
				default: 'https://github.com/misskey-dev/misskey',
			},
			feedbackUrl: {
				type: 'string',
				optional: false, nullable: false,
				default: 'https://github.com/misskey-dev/misskey/issues/new',
			},
			defaultDarkTheme: {
				type: 'string',
				optional: false, nullable: true,
			},
			defaultLightTheme: {
				type: 'string',
				optional: false, nullable: true,
			},
			disableRegistration: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			disableLocalTimeline: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			disableGlobalTimeline: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			driveCapacityPerLocalUserMb: {
				type: 'number',
				optional: false, nullable: false,
			},
			driveCapacityPerRemoteUserMb: {
				type: 'number',
				optional: false, nullable: false,
			},
			cacheRemoteFiles: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			emailRequiredForSignup: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			enableHcaptcha: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			hcaptchaSiteKey: {
				type: 'string',
				optional: false, nullable: true,
			},
			enableRecaptcha: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			recaptchaSiteKey: {
				type: 'string',
				optional: false, nullable: true,
			},
			enableTurnstile: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			turnstileSiteKey: {
				type: 'string',
				optional: false, nullable: true,
			},
			swPublickey: {
				type: 'string',
				optional: false, nullable: true,
			},
			mascotImageUrl: {
				type: 'string',
				optional: false, nullable: false,
				default: '/assets/ai.png',
			},
			bannerUrl: {
				type: 'string',
				optional: false, nullable: false,
			},
			errorImageUrl: {
				type: 'string',
				optional: false, nullable: false,
				default: 'https://xn--931a.moe/aiart/yubitun.png',
			},
			iconUrl: {
				type: 'string',
				optional: false, nullable: true,
			},
			maxNoteTextLength: {
				type: 'number',
				optional: false, nullable: false,
			},
			emojis: {
				type: 'array',
				optional: false, nullable: false,
				items: {
					type: 'object',
					optional: false, nullable: false,
					properties: {
						id: {
							type: 'string',
							optional: false, nullable: false,
							format: 'id',
						},
						aliases: {
							type: 'array',
							optional: false, nullable: false,
							items: {
								type: 'string',
								optional: false, nullable: false,
							},
						},
						category: {
							type: 'string',
							optional: false, nullable: true,
						},
						host: {
							type: 'string',
							optional: false, nullable: true,
							description: 'The local host is represented with `null`.',
						},
						url: {
							type: 'string',
							optional: false, nullable: false,
							format: 'url',
						},
					},
				},
			},
			ads: {
				type: 'array',
				optional: false, nullable: false,
				items: {
					type: 'object',
					optional: false, nullable: false,
					properties: {
						place: {
							type: 'string',
							optional: false, nullable: false,
						},
						url: {
							type: 'string',
							optional: false, nullable: false,
							format: 'url',
						},
						imageUrl: {
							type: 'string',
							optional: false, nullable: false,
							format: 'url',
						},
					},
				},
			},
			requireSetup: {
				type: 'boolean',
				optional: false, nullable: false,
				example: false,
			},
			enableEmail: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			enableTwitterIntegration: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			enableGithubIntegration: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			enableDiscordIntegration: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			enableServiceWorker: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			translatorAvailable: {
				type: 'boolean',
				optional: false, nullable: false,
			},
			proxyAccountName: {
				type: 'string',
				optional: false, nullable: true,
			},
			features: {
				type: 'object',
				optional: true, nullable: false,
				properties: {
					registration: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					localTimeLine: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					globalTimeLine: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					elasticsearch: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					hcaptcha: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					recaptcha: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					objectStorage: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					twitter: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					github: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					discord: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					serviceWorker: {
						type: 'boolean',
						optional: false, nullable: false,
					},
					miauth: {
						type: 'boolean',
						optional: true, nullable: false,
						default: true,
					},
				},
			},
		},
	},
} as const;

export const paramDef = {
	type: 'object',
	properties: {
		detail: { type: 'boolean', default: true },
	},
	required: [],
} as const;

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

		@Inject(DI.adsRepository)
		private adsRepository: AdsRepository,

		@Inject(DI.emojisRepository)
		private emojisRepository: EmojisRepository,

		private userEntityService: UserEntityService,
		private emojiEntityService: EmojiEntityService,
		private metaService: MetaService,
	) {
		super(meta, paramDef, async (ps, me) => {
			const instance = await this.metaService.fetch(true);

			const emojis = await this.emojisRepository.find({
				where: {
					host: IsNull(),
				},
				order: {
					category: 'ASC',
					name: 'ASC',
				},
				cache: {
					id: 'meta_emojis',
					milliseconds: 3600000,	// 1 hour
				},
			});

			const ads = await this.adsRepository.find({
				where: {
					expiresAt: MoreThan(new Date()),
				},
			});

			const response: any = {
				maintainerName: instance.maintainerName,
				maintainerEmail: instance.maintainerEmail,

				version: this.config.version,

				name: instance.name,
				uri: this.config.url,
				description: instance.description,
				langs: instance.langs,
				tosUrl: instance.ToSUrl,
				repositoryUrl: instance.repositoryUrl,
				feedbackUrl: instance.feedbackUrl,
				disableRegistration: instance.disableRegistration,
				disableLocalTimeline: instance.disableLocalTimeline,
				disableGlobalTimeline: instance.disableGlobalTimeline,
				driveCapacityPerLocalUserMb: instance.localDriveCapacityMb,
				driveCapacityPerRemoteUserMb: instance.remoteDriveCapacityMb,
				emailRequiredForSignup: instance.emailRequiredForSignup,
				enableHcaptcha: instance.enableHcaptcha,
				hcaptchaSiteKey: instance.hcaptchaSiteKey,
				enableRecaptcha: instance.enableRecaptcha,
				recaptchaSiteKey: instance.recaptchaSiteKey,
				enableTurnstile: instance.enableTurnstile,
				turnstileSiteKey: instance.turnstileSiteKey,
				swPublickey: instance.swPublicKey,
				themeColor: instance.themeColor,
				mascotImageUrl: instance.mascotImageUrl,
				bannerUrl: instance.bannerUrl,
				errorImageUrl: instance.errorImageUrl,
				iconUrl: instance.iconUrl,
				backgroundImageUrl: instance.backgroundImageUrl,
				logoImageUrl: instance.logoImageUrl,
				maxNoteTextLength: MAX_NOTE_TEXT_LENGTH, // 後方互換性のため
				emojis: await this.emojiEntityService.packMany(emojis),
				defaultLightTheme: instance.defaultLightTheme,
				defaultDarkTheme: instance.defaultDarkTheme,
				ads: ads.map(ad => ({
					id: ad.id,
					url: ad.url,
					place: ad.place,
					ratio: ad.ratio,
					imageUrl: ad.imageUrl,
				})),
				enableEmail: instance.enableEmail,

				enableTwitterIntegration: instance.enableTwitterIntegration,
				enableGithubIntegration: instance.enableGithubIntegration,
				enableDiscordIntegration: instance.enableDiscordIntegration,

				enableServiceWorker: instance.enableServiceWorker,

				translatorAvailable: instance.deeplAuthKey != null,

				...(ps.detail ? {
					pinnedPages: instance.pinnedPages,
					pinnedClipId: instance.pinnedClipId,
					cacheRemoteFiles: instance.cacheRemoteFiles,
					requireSetup: (await this.usersRepository.countBy({
						host: IsNull(),
					})) === 0,
				} : {}),
			};

			if (ps.detail) {
				const proxyAccount = instance.proxyAccountId ? await this.userEntityService.pack(instance.proxyAccountId).catch(() => null) : null;

				response.proxyAccountName = proxyAccount ? proxyAccount.username : null;
				response.features = {
					registration: !instance.disableRegistration,
					localTimeLine: !instance.disableLocalTimeline,
					globalTimeLine: !instance.disableGlobalTimeline,
					emailRequiredForSignup: instance.emailRequiredForSignup,
					elasticsearch: this.config.elasticsearch ? true : false,
					hcaptcha: instance.enableHcaptcha,
					recaptcha: instance.enableRecaptcha,
					turnstile: instance.enableTurnstile,
					objectStorage: instance.useObjectStorage,
					twitter: instance.enableTwitterIntegration,
					github: instance.enableGithubIntegration,
					discord: instance.enableDiscordIntegration,
					serviceWorker: instance.enableServiceWorker,
					miauth: true,
				};
			}

			return response;
		});
	}
}