'use strict';

const config = require('config');
const Promise = require('bluebird');
const UrlPattern = require('url-pattern');
const moment = require('moment');

const logger = require('./logger')(__filename);
const knex = require('./knex');
const argv = require('./argv');
const include = require('./utils/argv-include')(argv);
const scrapers = require('./scrapers/scrapers');
const whereOr = require('./utils/where-or');
const resolvePlace = require('./utils/resolve-place');
const slugify = require('./utils/slugify');
const capitalize = require('./utils/capitalize');
const { curateSites } = require('./sites');
const { storeMedia, associateMedia } = require('./media');

async function curateActor(actor) {
	const [aliases, avatar, photos, social] = await Promise.all([
		knex('actors').where({ alias_for: actor.id }),
		knex('actors_avatars')
			.where('actor_id', actor.id)
			.join('media', 'media.id', 'actors_avatars.media_id')
			.first(),
		knex('actors_photos')
			.where('actor_id', actor.id)
			.join('media', 'media.id', 'actors_photos.media_id')
			.orderBy('index'),
		knex('actors_social')
			.where('actor_id', actor.id)
			.orderBy('platform', 'desc'),
	]);

	const curatedActor = {
		id: actor.id,
		gender: actor.gender,
		name: actor.name,
		description: actor.description,
		birthdate: actor.birthdate && new Date(actor.birthdate),
		country: actor.country_alpha2,
		origin: (actor.birth_city || actor.birth_state || actor.birth_country_alpha2) ? {} : null,
		residence: (actor.residence_city || actor.residence_state || actor.residence_country_alpha2) ? {} : null,
		ethnicity: actor.ethnicity,
		height: actor.height,
		weight: actor.weight,
		bust: actor.bust,
		waist: actor.waist,
		hip: actor.hip,
		naturalBoobs: actor.natural_boobs,
		aliases: aliases.map(({ name }) => name),
		slug: actor.slug,
		avatar,
		photos,
		hasTattoos: actor.has_tattoos,
		hasPiercings: actor.has_piercings,
		tattoos: actor.tattoos,
		piercings: actor.piercings,
		social,
		scrapedAt: actor.scraped_at,
	};

	if (curatedActor.birthdate) {
		curatedActor.age = moment().diff(curatedActor.birthdate, 'years');
	}

	if (actor.birth_city) curatedActor.origin.city = actor.birth_city;
	if (actor.birth_state) curatedActor.origin.state = actor.birth_state;

	if (actor.birth_country_alpha2) {
		curatedActor.origin.country = {
			alpha2: actor.birth_country_alpha2,
			name: actor.birth_country_name,
			alias: actor.birth_country_alias,
		};
	}

	if (actor.residence_city) curatedActor.residence.city = actor.residence_city;
	if (actor.residence_state) curatedActor.residence.state = actor.residence_state;

	if (actor.residence_country_alpha2) {
		curatedActor.residence.country = {
			alpha2: actor.residence_country_alpha2,
			name: actor.residence_country_name,
			alias: actor.residence_country_alias,
		};
	}

	return curatedActor;
}

function curateActors(releases) {
	return Promise.all(releases.map(async release => curateActor(release)));
}

function curateActorEntry(actor, scraped, scrapeSuccess) {
	const curatedActor = {
		name: capitalize(actor.name),
		slug: slugify(actor.name),
		birthdate: actor.birthdate,
		description: actor.description,
		gender: actor.gender,
		ethnicity: actor.ethnicity,
		bust: actor.bust,
		waist: actor.waist,
		hip: actor.hip,
		natural_boobs: actor.naturalBoobs,
		height: actor.height,
		weight: actor.weight,
		hair: actor.hair,
		eyes: actor.eyes,
		has_tattoos: actor.hasTattoos,
		has_piercings: actor.hasPiercings,
		tattoos: actor.tattoos,
		piercings: actor.piercings,
	};

	if (actor.id) {
		curatedActor.id = actor.id;
	}

	if (actor.birthPlace) {
		curatedActor.birth_city = actor.birthPlace.city;
		curatedActor.birth_state = actor.birthPlace.state;
		curatedActor.birth_country_alpha2 = actor.birthPlace.country;
	}

	if (actor.residencePlace) {
		curatedActor.residence_city = actor.residencePlace.city;
		curatedActor.residence_state = actor.residencePlace.state;
		curatedActor.residence_country_alpha2 = actor.residencePlace.country;
	}

	if (scraped) {
		curatedActor.scraped_at = new Date();
		curatedActor.scrape_success = scrapeSuccess;
	}

	return curatedActor;
}

function curateSocialEntry(url, actorId) {
	const platforms = [
		// links supplied by PH often look like domain.com/domain.com/username
		{
			label: 'twitter',
			pattern: 'http(s)\\://(*)twitter.com/:username(/)(?*)',
			format: username => `https://www.twitter.com/${username}`,
		},
		{
			label: 'youtube',
			pattern: 'http(s)\\://(*)youtube.com/channel/:username(?*)',
			format: username => `https://www.youtube.com/channel/${username}`,
		},
		{
			label: 'instagram',
			pattern: 'http(s)\\://(*)instagram.com/:username(/)(?*)',
			format: username => `https://www.instagram.com/${username}`,
		},
		{
			label: 'snapchat',
			pattern: 'http(s)\\://(*)snapchat.com/add/:username(/)(?*)',
			format: username => `https://www.snapchat.com/add/${username}`,
		},
		{
			label: 'tumblr',
			pattern: 'http(s)\\://:username.tumblr.com(*)',
			format: username => `https://${username}.tumblr.com`,
		},
		{
			label: 'onlyfans',
			pattern: 'http(s)\\://(*)onlyfans.com/:username(/)(?*)',
			format: username => `https://www.onlyfans.com/${username}`,
		},
		{
			label: 'fancentro',
			pattern: 'http(s)\\://(*)fancentro.com/:username(/)(?*)',
			format: username => `https://www.fancentro.com/${username}`,
		},
		{
			label: 'modelhub',
			pattern: 'http(s)\\://(*)modelhub.com/:username(/)(?*)',
			format: username => `https://www.modelhub.com/${username}`,
		},
	];

	const match = platforms.reduce((acc, platform) => {
		if (acc) return acc;

		const patternMatch = new UrlPattern(platform.pattern).match(url);

		if (patternMatch) {
			return {
				platform: platform.label,
				original: url,
				username: patternMatch.username,
				url: platform.format ? platform.format(patternMatch.username) : url,
			};
		}

		return null;
	}, null) || { url };

	return {
		url: match.url,
		platform: match.platform,
		actor_id: actorId,
	};
}

async function curateSocialEntries(urls, actorId) {
	if (!urls) {
		return [];
	}

	const existingSocialLinks = await knex('actors_social').where('actor_id', actorId);

	return urls.reduce((acc, url) => {
		const socialEntry = curateSocialEntry(url, actorId);

		if (acc.some(entry => socialEntry.url.toLowerCase() === entry.url.toLowerCase()) || existingSocialLinks.some(entry => socialEntry.url.toLowerCase() === entry.url.toLowerCase())) {
			// prevent duplicates
			return acc;
		}

		return [...acc, socialEntry];
	}, []);
}

async function fetchActors(queryObject, limit = 100) {
	const releases = await knex('actors')
		.select(
			'actors.*',
			'birth_countries.alpha2 as birth_country_alpha2', 'birth_countries.name as birth_country_name', 'birth_countries.alias as birth_country_alias',
			'residence_countries.alpha2 as residence_country_alpha2', 'residence_countries.name as residence_country_name', 'residence_countries.alias as residence_country_alias',
		)
		.leftJoin('countries as birth_countries', 'actors.birth_country_alpha2', 'birth_countries.alpha2')
		.leftJoin('countries as residence_countries', 'actors.residence_country_alpha2', 'residence_countries.alpha2')
		.orderBy(['actors.name', 'actors.gender'])
		.where(builder => whereOr(queryObject, 'actors', builder))
		.limit(limit);

	return curateActors(releases);
}

async function storeSocialLinks(urls, actorId) {
	const curatedSocialEntries = await curateSocialEntries(urls, actorId);

	await knex('actors_social').insert(curatedSocialEntries);
}

async function storeAvatars(avatars, actorId) {
	if (!avatars || avatars.length === 0) {
		return [];
	}

	const avatarsBySource = await storeMedia(avatars, 'actor', 'avatar');
	await associateMedia({ [actorId]: avatars }, avatarsBySource, 'actor', 'photo', 'avatar');

	return avatarsBySource;
}

async function storeActor(actor, scraped = false, scrapeSuccess = false) {
	const curatedActor = curateActorEntry(actor, scraped, scrapeSuccess);

	const [actorEntry] = await knex('actors')
		.insert(curatedActor)
		.returning('*');

	await storeSocialLinks(actor.social, actorEntry.id);

	if (actor.avatars) {
		await storeAvatars(actor.avatars, actorEntry.id);
	}

	logger.info(`Added new entry for actor '${actor.name}'`);

	return actorEntry;
}

async function updateActor(actor, scraped = false, scrapeSuccess = false) {
	const curatedActor = curateActorEntry(actor, scraped, scrapeSuccess);

	const [actorEntry] = await knex('actors')
		.where({ id: actor.id })
		.update(curatedActor)
		.returning('*');

	await storeSocialLinks(actor.social, actor.id);

	logger.info(`Updated entry for actor '${actor.name}'`);

	return actorEntry;
}

async function mergeProfiles(profiles, actor) {
	if (profiles.filter(Boolean).length === 0) {
		return null;
	}

	const mergedProfile = profiles.reduce((prevProfile, profile) => {
		if (profile === null) {
			return prevProfile;
		}

		const accProfile = {
			id: actor ? actor.id : null,
			name: actor ? actor.name : (prevProfile.name || profile.name),
			description: prevProfile.description || profile.description,
			gender: prevProfile.gender || profile.gender,
			birthdate: !prevProfile.birthdate || Number.isNaN(Number(prevProfile.birthdate)) ? profile.birthdate : prevProfile.birthdate,
			birthPlace: prevProfile.birthPlace || profile.birthPlace,
			residencePlace: prevProfile.residencePlace || profile.residencePlace,
			nationality: prevProfile.nationality || profile.nationality, // used to derive country when not available
			ethnicity: prevProfile.ethnicity || profile.ethnicity,
			bust: prevProfile.bust || (/\d+\w+/.test(profile.bust) ? profile.bust : null),
			waist: prevProfile.waist || profile.waist,
			hip: prevProfile.hip || profile.hip,
			naturalBoobs: prevProfile.naturalBoobs === undefined ? profile.naturalBoobs : prevProfile.naturalBoobs,
			height: prevProfile.height || profile.height,
			weight: prevProfile.weight || profile.weight,
			hair: prevProfile.hair || profile.hair,
			eyes: prevProfile.eyes || profile.eyes,
			hasPiercings: prevProfile.hasPiercings === undefined ? profile.hasPiercings : prevProfile.hasPiercings,
			hasTattoos: prevProfile.hasTattoos === undefined ? profile.hasTattoos : prevProfile.hasTattoos,
			piercings: prevProfile.piercings || profile.piercings,
			tattoos: prevProfile.tattoos || profile.tattoos,
			social: prevProfile.social.concat(profile.social || []),
			releases: prevProfile.releases.concat(profile.releases ? profile.releases : []), // don't flatten fallbacks
		};

		if (profile.avatar) {
			const avatar = Array.isArray(profile.avatar)
				? profile.avatar.map(avatarX => ({
					src: avatarX.src || avatarX,
					scraper: profile.scraper,
					copyright: avatarX.copyright === undefined ? capitalize(profile.site?.name || profile.scraper) : profile.avatar.copyright,
				}))
				: {
					src: profile.avatar.src || profile.avatar,
					scraper: profile.scraper,
					copyright: profile.avatar.copyright === undefined ? capitalize(profile.site?.name || profile.scraper) : profile.avatar.copyright,
				};

			accProfile.avatars = prevProfile.avatars.concat([avatar]); // don't flatten fallbacks
		} else {
			accProfile.avatars = prevProfile.avatars;
		}

		return accProfile;
	}, {
		social: [],
		avatars: [],
		releases: [],
	});

	const [birthPlace, residencePlace] = await Promise.all([
		resolvePlace(mergedProfile.birthPlace),
		resolvePlace(mergedProfile.residencePlace),
	]);

	mergedProfile.birthPlace = birthPlace;
	mergedProfile.residencePlace = residencePlace;

	if (!mergedProfile.birthPlace && mergedProfile.nationality) {
		const country = await knex('countries')
			.where('nationality', 'ilike', `%${mergedProfile.nationality}%`)
			.orderBy('priority', 'desc')
			.first();

		mergedProfile.birthPlace = {
			country: country.alpha2,
		};
	}

	return mergedProfile;
}

async function scrapeProfiles(sources, actorName, actorEntry, sitesBySlug) {
	return Promise.map(sources, async (source) => {
		//  const [scraperSlug, scraper] = source;
		const profileScrapers = [].concat(source).map(slug => ({ scraperSlug: slug, scraper: scrapers.actors[slug] }));

		try {
			return await profileScrapers.reduce(async (outcome, { scraper, scraperSlug }) => outcome.catch(async () => {
				if (!scraper) {
					logger.warn(`No profile profile scraper available for ${scraperSlug}`);
					throw Object.assign(new Error(`No profile scraper available for ${scraperSlug}`));
				}

				logger.verbose(`Searching '${actorName}' on ${scraperSlug}`);

				const site = sitesBySlug[scraperSlug] || null;
				const profile = await scraper.fetchProfile(actorEntry ? actorEntry.name : actorName, scraperSlug, site, include);

				if (profile && typeof profile !== 'number') {
					logger.verbose(`Found profile for '${actorName}' on ${scraperSlug}`);

					return {
						...profile,
						name: actorName,
						scraper: scraperSlug,
						site,
						releases: profile.releases?.map(release => (typeof release === 'string'
							? { url: release, site }
							: { ...release, site: release.site || site }
						)),
					};
				}

				logger.verbose(`No profile for '${actorName}' available on ${scraperSlug}: ${profile}`);
				throw Object.assign(new Error(`Profile for ${actorName} not available on ${scraperSlug}`), { warn: false });
			}), Promise.reject(new Error()));
		} catch (error) {
			if (error.warn !== false) {
				logger.warn(`Error in scraper ${source}: ${error.message}`);
				// logger.error(error.stack);
			}
		}

		return null;
	});
}

async function scrapeActors(actorNames) {
	return Promise.map(actorNames || argv.actors, async (actorName) => {
		try {
			const actorSlug = slugify(actorName);
			const actorEntry = await knex('actors').where({ slug: actorSlug }).first();
			const sources = argv.sources || config.profiles || Object.keys(scrapers.actors);

			const finalSources = argv.withReleases ? sources.flat() : sources; // ignore race-to-success grouping when scenes are requested

			const [siteEntries, networkEntries] = await Promise.all([
				knex('sites')
					.leftJoin('networks', 'sites.network_id', 'networks.id')
					.select(
						'sites.*',
						'networks.name as network_name', 'networks.slug as network_slug', 'networks.url as network_url', 'networks.description as network_description', 'networks.parameters as network_parameters',
					)
					.whereIn('sites.slug', finalSources.flat()),
				knex('networks').select('*').whereIn('slug', finalSources.flat()),
			]);

			const sites = await curateSites(siteEntries, true);
			const networks = networkEntries.map(network => ({ ...network, isFallback: true }));
			const sitesBySlug = [].concat(networks, sites).reduce((acc, site) => ({ ...acc, [site.slug]: site }), {});

			const profiles = await scrapeProfiles(sources, actorName, actorEntry, sitesBySlug);
			const profile = await mergeProfiles(profiles, actorEntry);

			if (profile === null) {
				logger.warn(`Could not find profile for actor '${actorName}'`);

				if (argv.save && !actorEntry) {
					await storeActor({ name: actorName }, false, false);
				}

				return null;
			}

			if (argv.inspect) {
				console.log(profile);
				logger.info(`Found ${profile.releases.length} releases for ${actorName}`);
			}

			if (argv.save) {
				if (actorEntry && profile) {
					await Promise.all([
						updateActor(profile, true, true),
						storeAvatars(profile.avatars, actorEntry.id),
					]);

					return profile;
				}

				await storeActor(profile, true, true);
			}

			return profile;
		} catch (error) {
			console.log(error);
			logger.warn(`${actorName}: ${error}`);

			return null;
		}
	}, {
		concurrency: 3,
	});
}

async function scrapeBasicActors() {
	const basicActors = await knex('actors').where('scraped_at', null);

	return scrapeActors(basicActors.map(actor => actor.name));
}

async function associateActors(mappedActors, releases) {
	const [existingActorEntries, existingAssociationEntries] = await Promise.all([
		knex('actors')
			.whereIn('name', Object.values(mappedActors).map(actor => actor.name))
			.orWhereIn('slug', Object.keys(mappedActors)),
		knex('releases_actors').whereIn('release_id', releases.map(release => release.id)),
	]);

	const associations = await Promise.map(Object.entries(mappedActors), async ([actorSlug, actor]) => {
		try {
			const actorEntry = existingActorEntries.find(actorX => actorX.slug === actorSlug)
                || await storeActor(actor);

			// if a scene
			return Array.from(actor.releaseIds)
				.map(releaseId => ({
					release_id: releaseId,
					actor_id: actorEntry.id,
				}))
				.filter(association => !existingAssociationEntries
				// remove associations already in database
					.some(associationEntry => associationEntry.actor_id === association.actor_id
                        && associationEntry.release_id === association.release_id));
		} catch (error) {
			logger.error(actor.name, error);
			return null;
		}
	});

	await knex('releases_actors').insert(associations.filter(association => association).flat());

	// basic actor scraping is failure prone, don't run together with actor association
	// await scrapebasicactors(),
}

module.exports = {
	associateActors,
	fetchActors,
	scrapeActors,
	scrapeBasicActors,
};