'use strict';

// const slugify = require('../utils/slugify');
const { ex, ctxa } = require('../utils/q');
const http = require('../utils/http');

function getLicenseCode(html) {
	const licensePrefix = 'license_code: \'';
	const licenseStart = html.indexOf(licensePrefix);
	const licenseCode = html.slice(licenseStart + licensePrefix.length, html.indexOf('\'', licenseStart + licensePrefix.length));

	const c = '16px';
	let f;
	let g;
	let h;
	let i;
	let j;
	let k;
	let l;
	let m;
	let n;

	for (f = '', g = 1; g < licenseCode.length; g += 1) {
		f += parseInt(licenseCode[g], 10) ? parseInt(licenseCode[g], 10) : 1;
	}

	for (j = parseInt(f.length / 2, 10),
	k = parseInt(f.substring(0, j + 1), 10),
	l = parseInt(f.substring(j), 10),
	g = l - k,
	g < 0 && (g = -g),
	f = g,
	g = k - l,
	g < 0 && (g = -g),
	f += g,
	f *= 2,
	f = String(f),
	i = (parseInt(c, 10) / 2) + 2,
	m = '',
	g = 0; g < j + 1; g += 1) {
		for (h = 1; h <= 4; h += 1) {
			n = parseInt(licenseCode[g + h], 10) + parseInt(f[g], 10);

			if (n >= i) n -= i;
			m += n;
		}
	}

	return m;
}

function decodeTrailerUrl(html, encodedTrailerUrl) {
	const licenseCode = getLicenseCode(html);
	const i = licenseCode;

	let j;
	let k;
	let l;
	let m;
	let n;
	let o;

	const d = '16px';
	const g = encodedTrailerUrl.split('/').slice(2);

	let h = g[5].substring(0, 2 * parseInt(d, 10));

	for (j = h, k = h.length - 1; k >= 0; k -= 1) {
		for (l = k, m = k; m < i.length; m += 1) {
			l += parseInt(i[m], 10);
		}

		for (; l >= h.length;) {
			l -= h.length;
		}

		for (n = '', o = 0; o < h.length; o += 1) {
			if (o === k) {
				n += h[l];
			} else {
				n += (o === l ? h[k] : h[o]);
			}
		}

		h = n;
	}

	g[5] = g[5].replace(j, h);
	const trailer = g.join('/');

	return trailer;
}

function scrapeLatest(html) {
	const { document } = ex(html);

	return ctxa(document, '.video-post').map(({ q, qa, qd }) => {
		const release = {};

		// release.entryId = slugify(release.title);
		release.entryId = q('.ico-fav-0').dataset.favVideoId;

		const titleEl = q('.video-title-title');
		release.title = titleEl.title;
		release.url = titleEl.href;

		release.date = qd('.video-data em', 'MMM DD, YYYY');
		release.actors = qa('.video-model-list a', true);

		const posterData = q('img.thumb').dataset;
		release.poster = posterData.src;
		release.trailer = posterData.preview;

		return release;
	});
}

function scrapeScene(html, url) {
	const { qu } = ex(html);
	const release = { url };

	// release.entryId = slugify(release.title);
	[release.entryId] = qu.q('link[rel="canonical"]').href.match(/\d+/);

	release.title = qu.meta('meta[property="og:title"]') || qu.q('.video-page-header h1', true);
	release.description = qu.meta('meta[property="og:description"]') || qu.q('.info-video-description', true);

	release.date = qu.date('.info-video-details li:first-child span', 'MMM DD, YYYY');
	release.duration = qu.dur('.info-video-details li:nth-child(2) span');

	release.actors = qu.all('.info-video-models a', true);
	release.tags = qu.all('.info-video-category a', true);

	release.photos = qu.urls('.swiper-wrapper .swiper-slide a').map((source) => source.replace('.jpg/', '.jpg'));
	release.poster = qu.meta('meta[property="og:image"]');

	if (!release.poster) {
		const previewStart = html.indexOf('preview_url');
		release.poster = html.slice(html.indexOf('http', previewStart), html.indexOf('.jpg', previewStart) + 4);
	}

	const varsPrefix = 'flashvars = {';
	const varsStart = html.indexOf(varsPrefix);
	const varsString = html.slice(varsStart + varsPrefix.length, html.indexOf('};', varsStart));

	const vars = varsString.split(',').reduce((acc, item) => {
		const [prop, value] = item.split(': ');
		acc[prop.trim()] = value.trim().replace(/'/g, '');

		return acc;
	}, {});

	release.trailer = [
		{
			src: decodeTrailerUrl(html, vars.video_url),
			quality: parseInt(vars.video_url_text, 10),
		},
		{
			src: decodeTrailerUrl(html, vars.video_alt_url),
			quality: parseInt(vars.video_alt_url_text, 10),
		},
		{
			src: decodeTrailerUrl(html, vars.video_alt_url2),
			quality: parseInt(vars.video_alt_url2_text, 10),
		},
		{
			src: decodeTrailerUrl(html, vars.video_alt_url3),
			quality: parseInt(vars.video_alt_url3_text, 10),
		},
		{
			src: decodeTrailerUrl(html, vars.video_alt_url4),
			quality: parseInt(vars.video_alt_url4_text, 10),
		},
	];

	return release;
}

async function fetchLatest(site, page = 1) {
	const url = `https://vogov.com/latest-videos/?sort_by=post_date&from=${page}`;
	const res = await http.get(url);

	if (res.statusCode === 200) {
		return scrapeLatest(res.body.toString(), site);
	}

	return null;
}

async function fetchScene(url) {
	const res = await http.get(url);

	if (res.statusCode === 200) {
		return scrapeScene(res.body.toString(), url);
	}

	return null;
}

module.exports = {
	fetchLatest,
	fetchScene,
};