'use strict';

const bhttp = require('bhttp');
const { JSDOM } = require('jsdom');
const moment = require('moment');

const siteMapByKey = {
    PF: 'pornfidelity',
    TF: 'teenfidelity',
    KM: 'kellymadison',
};

const siteMapBySlug = Object.entries(siteMapByKey).reduce((acc, [key, value]) => ({ ...acc, [value]: key }), {});

function extractTextNode(parentEl) {
    return Array.from(parentEl).reduce((acc, el) => (el.nodeType === 3 ? `${acc}${el.textContent.trim()}` : acc), '');
}

function scrapeLatest(html, site) {
    const { document } = new JSDOM(html).window;

    return Array.from(document.querySelectorAll('.episode'), (scene) => {
        const release = { site };

        release.shootId = scene.querySelector('.card-meta .text-right').textContent.trim();

        const siteId = release.shootId.match(/\w{2}/)[0];
        const siteSlug = siteMapByKey[siteId];

        if (site.slug !== siteSlug) {
            // using generic network overview, scene is not from the site we want
            return null;
        }

        const durationEl = scene.querySelector('.content a');

        [release.entryId] = durationEl.href.match(/\d+$/);
        release.url = `${site.url}/episodes/${release.entryId}`;

        release.title = scene.querySelector('h5 a').textContent.trim();

        const dateEl = scene.querySelector('.card-meta .text-left').childNodes;
        const dateString = extractTextNode(dateEl);

        release.date = moment.utc(dateString, ['MMM D', 'MMM D, YYYY']).toDate();
        release.actors = Array.from(scene.querySelectorAll('.models a'), el => el.textContent);

        const durationString = durationEl.textContent.match(/\d+ min/);
        if (durationString) release.duration = Number(durationString[0].match(/\d+/)[0]) * 60;

        release.poster = scene.querySelector('.card-img-top').src;
        release.trailer = {
            src: scene.querySelector('video').src,
        };

        return release;
    }).filter(scene => scene);
}

function scrapeScene(html, url, site, shallowRelease) {
    const { document } = new JSDOM(html).window;
    const release = { url, site };

    const titleEl = document.querySelector('.card-header.row h4').childNodes;
    const titleString = extractTextNode(titleEl);

    if (!shallowRelease) [release.entryId] = url.match(/\d+/);

    release.title = titleString
        .replace('Trailer: ', '')
        .replace(/- \w+ #\d+$/, '')
        .trim();

    release.channel = titleString.match(/\w+ #\d+$/)[0].match(/\w+/)[0].toLowerCase();

    const episode = titleString.match(/#\d+$/)[0];
    const siteKey = siteMapBySlug[release.channel];

    release.shootId = `${siteKey} ${episode}`;
    release.description = document.querySelector('p.card-text').textContent.trim();

    const dateEl = document.querySelector('.card-body h4.card-title:nth-child(3)').childNodes;
    const dateString = extractTextNode(dateEl);

    release.date = moment.utc(dateString, 'YYYY-MM-DD').toDate();
    release.actors = Array.from(document.querySelectorAll('.card-body h4.card-title:nth-child(4) a'), el => el.textContent);

    const durationRaw = document.querySelector('.card-body h4.card-title:nth-child(1)').textContent;
    const durationString = durationRaw.match(/\d+:\d+/)[0];

    release.duration = moment.duration(`00:${durationString}`).asSeconds();

    const trailerStart = document.body.innerHTML.indexOf('player.updateSrc');
    const trailerString = document.body.innerHTML.slice(trailerStart, document.body.innerHTML.indexOf(');', trailerStart));

    const trailers = trailerString.match(/https:\/\/.*.mp4/g);
    const resolutions = trailerString.match(/res: '\d+'/g).map((res) => {
        const resolution = Number(res.match(/\d+/)[0]);

        return resolution === 4000 ? 2160 : resolution; // 4k is not 4000 pixels high
    });

    release.trailer = trailers.map((trailer, index) => ({
        src: trailer,
        quality: resolutions[index],
    }));

    [release.poster] = document.body.innerHTML
        .match(/poster: .*\.jpg/)[0]
        .match(/https:\/\/.*\.jpg/);

    if (shallowRelease) release.photos = [shallowRelease.poster]; // deep poster different from shallow poster, use shallow poster as additional photo

    return release;
}

async function fetchLatest(site, page = 1) {
    const url = `https://kellymadison.com/episodes/search?page=${page}`; // TLS issues with teenfidelity.com, same overview on all sites
    const res = await bhttp.get(url, {
        headers: {
            'X-Requested-With': 'XMLHttpRequest',
        },
    });

    if (res.statusCode === 200 && res.body.status === 'success') {
        return scrapeLatest(res.body.html, site);
    }

    return null;
}

async function fetchScene(url, site, shallowRelease) {
    const { pathname } = new URL(url);

    const res = await bhttp.get(`https://www.kellymadison.com${pathname}`, {
        headers: {
            'X-Requested-With': 'XMLHttpRequest',
        },
    });

    return scrapeScene(res.body.toString(), url, site, shallowRelease);
}

module.exports = {
    fetchLatest,
    fetchScene,
};