'use strict';

const bhttp = require('bhttp');
const cheerio = require('cheerio');
const moment = require('moment');

const { matchTags } = require('../tags');

function extractTitle(originalTitle) {
    const titleComponents = originalTitle.split(' ');
    const sceneIdMatch = titleComponents.slice(-1)[0].match(/(GP|SZ|IV|GIO|RS|TW|MA|FM|SAL|NR|AA|GL|BZ|FS)\d+/); // detect studio prefixes
    const shootId = sceneIdMatch ? sceneIdMatch[0] : null;
    const title = sceneIdMatch ? titleComponents.slice(0, -1).join(' ') : originalTitle;

    return { shootId, title };
}

function scrapeLatest(html, site) {
    const $ = cheerio.load(html, { normalizeWhitespace: true });
    const scenesElements = $('.thumbnails > div').toArray();

    return scenesElements.map((element) => {
        const sceneLinkElement = $(element).find('.thumbnail-title a');
        const url = sceneLinkElement.attr('href');

        const originalTitle = sceneLinkElement.text().trim(); // title attribute breaks when they use \\ escaping
        const { shootId, title } = extractTitle(originalTitle);
        const internalId = new URL(url).pathname.split('/')[2];

        const date = moment.utc($(element).attr('release'), 'YYYY/MM/DD').toDate();

        return {
            url,
            shootId: shootId || internalId,
            title,
            date,
            site,
        };
    });
}

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

    const originalTitle = $('h1.watchpage-title').text().trim();
    const { shootId, title } = extractTitle(originalTitle);

    const date = moment.utc($('span[title="Release date"] a').text(), 'YYYY-MM-DD').toDate();

    const [actorsElement, tagsElement] = $('.scene-description__row').toArray();
    const actors = $(actorsElement)
        .find('a[href*="com/model"]')
        .map((actorIndex, actorElement) => $(actorElement).text()).toArray();

    const duration = moment.duration($('span[title="Runtime"]').text().trim()).asSeconds();

    const rawTags = $(tagsElement).find('a').map((tagIndex, tagElement) => $(tagElement).text()).toArray();
    const tags = await matchTags(rawTags);

    return {
        url,
        shootId,
        title,
        date,
        actors,
        duration,
        tags,
        site,
    };
}

async function fetchLatest(site, page = 1) {
    const res = await bhttp.get(`${site.url}/new-videos/${page}`);

    return scrapeLatest(res.body.toString(), site);
}

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

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

module.exports = {
    fetchLatest,
    fetchScene,
};