'use strict';

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

async function getTrailer(entryId) {
    const trailerRes = await bhttp.post('https://www.pervcity.com/gettoken.php', {
        setId: entryId,
    });

    if (trailerRes.statusCode === 200) {
        return {
            poster: trailerRes.body.TrailerImg,
            trailer: trailerRes.body.TrailerPath || trailerRes.body.Trailerfallback,
        };
    }

    return null;
}

function scrapeLatestScene(html, site) {
    const $ = cheerio.load(html, { normalizeWhitespace: true });

    const entryId = $('li').attr('id');
    const sceneLinkElement = $('#scene_title_border a');
    const url = `${site.url}/${sceneLinkElement.attr('href')}`;
    const title = sceneLinkElement.attr('title').replace(/\u00E2\u0080\u0099/g, '\''); // replace weird apostrophes

    const actors = $('.home_model_name a').toArray().map(element => $(element).text().replace(/,[\u0020\u00A0\u202F]/, '')); // replace weird commas
    const date = moment.utc($('.add_date').text(), 'DD-MM-YYYY').toDate();

    const poster = $('a:nth-child(2) > img').attr('src');
    const photos = $('.sample-picker img').map((index, element) => $(element).attr('src').replace('tourpics', 'trailer')).toArray();

    const stars = $('img[src*="/star.png"]')
        .toArray()
        .map(element => $(element).attr('src'))
        .length || 0;

    return {
        url,
        entryId,
        title,
        actors,
        date,
        poster,
        photos,
        rating: {
            stars,
        },
        site,
    };
}

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

    const release = { url, site };

    release.entryId = document.querySelector('input#set_ID').value;

    release.title = document.querySelector('title').textContent;
    release.description = document.querySelector('.player_data').textContent.trim();

    const durationString = document.querySelector('.tag_lineR div:nth-child(2) span').textContent;
    const [minutes, seconds] = durationString.match(/\d+/g);

    release.duration = Number(minutes) * 60 + Number(seconds);
    release.tags = document.querySelector('meta[name="keywords"]').content.split(',');

    const { poster, trailer } = await getTrailer(release.entryId);

    release.poster = poster;
    release.trailer = { src: trailer };

    return release;
}

function scrapeFallbackLanding(html) {
    const { document } = new JSDOM(html).window;

    return document.querySelector('input#set_ID').value;
}

async function scrapeFallbackScene(html, entryId, url, site) {
    const { document } = new JSDOM(html).window;
    const release = { url, entryId, site };

    release.title = document.querySelector('.popup_data_set_head label').textContent;
    release.description = document.querySelector('.popup_data_set_des p').textContent.trim();
    release.date = moment.utc(document.querySelector('.popup_left_top div span').textContent, 'MM-DD-YYYY').toDate();
    release.actors = Array.from(document.querySelectorAll('.popup_data_set_models a'), el => el.textContent);

    const { poster, trailer } = await getTrailer(release.entryId);

    release.poster = poster;
    release.trailer = { src: trailer };

    release.channel = document.querySelector('.popup_left_top div img').alt;

    return release;
}

async function fetchLatest(site, page = 1) {
    const res = page === 1
        ? await bhttp.get(`${site.url}/final_latestupdateview.php?limitstart=${(page - 1) * 9}&limitend=9&websiteid=0&deviceview=browser&tourId=${site.parameters.tourId}`)
        : await bhttp.get(`${site.url}/final_load_latestupdate_grid_view.php?limitstart=0&limitend=${(page - 1) * 8 + 1}&websiteid=0&deviceview=browser&tourId=${site.parameters.tourId}`);
    const elements = JSON.parse(res.body.toString());

    const latest = Object.values(elements.total_arr).map(html => scrapeLatestScene(html, site)); // total_arr is a key-value object for final_load_latestupdate_grid_view.php

    return latest;
}

async function fetchScene(url, site) {
    const res = await bhttp.get(url);

    if (res.statusCode === 200) {
        if (site.isFallback) {
            const entryId = scrapeFallbackLanding(res.body.toString(), url);

            const fallbackRes = await bhttp.post('https://www.pervcity.com/set_popupvideo.php', {
                setId: entryId,
            });

            return scrapeFallbackScene(fallbackRes.body.toString(), entryId, url, site);
        }

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

    return null;
}

module.exports = {
    fetchLatest,
    fetchScene,
};