'use strict';

const Promise = require('bluebird');

const knex = require('./knex');
const argv = require('./argv');
const scrapers = require('./scrapers/scrapers');
const whereOr = require('./utils/where-or');
const { createActorMediaDirectory, storeAvatars } = require('./media');

async function curateActor(actor) {
    const [aliases, avatars] = await Promise.all([
        knex('actors').where({ alias_for: actor.id }),
        knex('media').where({ domain: 'actors', target_id: actor.id }),
    ]);

    return {
        id: actor.id,
        gender: actor.gender,
        name: actor.name,
        description: actor.description,
        birthdate: actor.birthdate && new Date(actor.birthdate),
        country: actor.country_alpha2,
        residencePlace: actor.residence_place,
        residenceCountry: actor.residence_country_alpha2
            ? {
                alpha2: actor.residence_country_alpha2,
                name: actor.residence_country_name,
            }
            : null,
        birthPlace: actor.birth_place,
        birthCountry: actor.birth_country_alpha2
            ? {
                alpha2: actor.birth_country_alpha2,
                name: actor.birth_country_name,
            }
            : null,
        ethnicity: actor.ethnicity,
        height: actor.height,
        boobSize: actor.boobs_size,
        boobsNatural: actor.boobs_natural,
        aliases: aliases.map(({ name }) => name),
        slug: actor.slug,
        avatars,
    };
}

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

function curateActorEntry(actor, scraped, scrapeSuccess) {
    const curatedActor = {
        id: actor.id,
        name: actor.name
            .split(' ')
            .map(segment => `${segment.charAt(0).toUpperCase()}${segment.slice(1)}`)
            .join(' '),
        slug: actor.name.toLowerCase().replace(/\s+/g, '-'),
        birthdate: actor.birthdate,
        description: actor.description,
        gender: actor.gender,
        ethnicity: actor.ethnicity,
        birth_country_alpha2: actor.birthCountry,
        residence_country_alpha2: actor.residenceCountry,
        birth_place: actor.birthPlace,
        residence_place: actor.residencePlace,
        boobs_size: actor.boobs && actor.boobs.size,
        boobs_natural: actor.boobs && actor.boobs.natural,
        height: actor.height,
        weight: actor.weight,
        hair: actor.hair,
        eyes: actor.eyes,
        tattoos: actor.tattoos,
        piercings: actor.piercings,
    };

    if (scraped) {
        return {
            ...curatedActor,
            scraped_at: new Date(),
            scrape_success: scrapeSuccess,
        };
    }

    return curatedActor;
}

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

    return curateActors(releases);
}

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

    const actorEntries = await knex('actors')
        .insert(curatedActor)
        .returning('*');

    if (actorEntries.length) {
        const actorEntry = actorEntries[0];

        console.log(`Added new entry for actor '${actor.name}'`);

        return actorEntry;
    }

    console.error(`Unable to save profile for '${actor.name}'`);

    return null;
}

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

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

    console.log(`Updated entry for actor '${actor.name}'`);

    return actorEntries[0];
}

function mergeProfiles(profiles, actor) {
    return profiles.reduce((prevProfile, profile) => {
        if (profile === null) {
            return prevProfile;
        }

        return {
            id: actor.id,
            name: actor.name,
            gender: prevProfile.gender || profile.gender,
            birthdate: prevProfile.birthdate || profile.birthdate,
            residenceCountry: prevProfile.residenceCountry || profile.residenceCountry,
            birthPlace: prevProfile.birthPlace || profile.birthPlace,
            ethnicity: prevProfile.ethnicity || profile.ethnicity,
            boobs: profile.boobs
                ? {
                    size: prevProfile.boobs.size || profile.boobs.size,
                    natural: prevProfile.boobs.natural || profile.boobs.natural,
                }
                : {},
            height: prevProfile.height || profile.height,
            weight: prevProfile.weight || profile.weight,
            hair: prevProfile.hair || profile.hair,
            eyes: prevProfile.eyes || profile.eyes,
            piercings: prevProfile.piercings || profile.piercings,
            tattoos: prevProfile.tattoos || profile.tattoos,
            social: prevProfile.social.concat(profile.social || []),
            avatars: prevProfile.avatars.concat(profile.avatar || []),
        };
    }, {
        boobs: {},
        social: [],
        avatars: [],
        ...actor,
    });
}

async function scrapeActors(actorNames) {
    await Promise.map(actorNames || argv.actors, async (actorName) => {
        const actorSlug = actorName.toLowerCase().replace(/\s+/g, '-');

        const actorEntry = await knex('actors').where({ slug: actorSlug }).first();
        const profiles = await Promise.all(Object.values(scrapers.actors).map(scraper => scraper.fetchProfile(actorEntry ? actorEntry.name : actorName)));
        const profile = mergeProfiles(profiles, actorEntry);

        if (profile === null) {
            console.log(`Could not find profile for actor '${actorName}'`);
            await updateActor(profile, true, false);

            return;
        }


        if (actorEntry && profile) {
            await createActorMediaDirectory(profile, actorEntry);

            await Promise.all([
                updateActor(profile, true, true),
                storeAvatars(profile, actorEntry),
            ]);

            return;
        }

        const newActorEntry = await storeActor(profile, true, true);

        await createActorMediaDirectory(profile, newActorEntry);
        await storeAvatars(profile, newActorEntry);
    }, {
        concurrency: 1,
    });
}

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

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

async function associateActors(release, releaseId) {
    const actorEntries = await knex('actors').whereIn('name', release.actors);

    const newActors = release.actors
        .map(actorName => actorName.trim())
        .filter(actorName => !actorEntries.some(actor => actor.name === actorName));

    const [newActorEntries, associatedActors] = await Promise.all([
        Promise.all(newActors.map(async actorName => storeActor({ name: actorName }))),
        knex('actors_associated').where('release_id', releaseId),
    ]);

    const newlyAssociatedActors = actorEntries
        .concat(newActorEntries)
        .filter(actorEntry => !associatedActors.some(actor => actorEntry.id === actor.id))
        .map(actor => ({
            release_id: releaseId,
            actor_id: actor.id,
        }));

    await knex('actors_associated')
        .insert(newlyAssociatedActors);
}

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