'use strict'; import cheerio = require('cheerio'); import episode from './episode'; import fs = require('fs'); import request = require('./request'); import path = require('path'); import url = require('url'); import log = require('./log'); const persistent = '.crpersistent'; /** * Streams the series to disk. */ export default function(config: IConfig, address: string, done: (err: Error) => void) { const persistentPath = path.join(config.output || process.cwd(), persistent); fs.readFile(persistentPath, 'utf8', (err, contents) => { const cache = config.cache ? {} : JSON.parse(contents || '{}'); page(config, address, (err, page) => { if (err) { return done(err); } let i = 0; (function next() { if (i >= page.episodes.length) return done(null); download(cache, config, address, page.episodes[i], (err, ignored) => { if (err) { return done(err); } if ((ignored === false) || (ignored === undefined)) { const newCache = JSON.stringify(cache, null, ' '); fs.writeFile(persistentPath, newCache, err => { if (err) return done(err); i += 1; next(); }); } else { i += 1; next(); } }); })(); }); }); } /** * Downloads the episode. */ function download(cache: {[address: string]: number}, config: IConfig, baseAddress: string, item: ISeriesEpisode, done: (err: Error, ign: boolean) => void) { if (!filter(config, item)) { return done(null, false); } const address = url.resolve(baseAddress, item.address); if (cache[address]) { return done(null, false); } episode(config, address, (err, ignored) => { if (err) { return done(err, false); } cache[address] = Date.now(); done(null, ignored); }); } /** * Filters the item based on the configuration. */ function filter(config: IConfig, item: ISeriesEpisode) { // Filter on chapter. const episodeFilter = config.episode; if (episodeFilter > 0 && parseInt(item.episode, 10) <= episodeFilter) return false; if (episodeFilter < 0 && parseInt(item.episode, 10) >= -episodeFilter) return false; // Filter on volume. const volumeFilter = config.volume; if (volumeFilter > 0 && item.volume <= volumeFilter) return false; if (volumeFilter < 0 && item.volume >= -volumeFilter) return false; return true; } /** * Requests the page and scrapes the episodes and series. */ function page(config: IConfig, address: string, done: (err: Error, result?: ISeries) => void) { request.get(config, address, (err, result) => { if (err) { return done(err); } const $ = cheerio.load(result); const title = $('span[itemprop=name]').text(); if (!title) { return done(new Error('Invalid page.(' + address + ')')); } log.info('Checking availability for ' + title); const episodes: ISeriesEpisode[] = []; $('.episode').each((i, el) => { if ($(el).children('img[src*=coming_soon]').length) { return; } const volume = /([0-9]+)\s*$/.exec($(el).closest('ul').prev('a').text()); const regexp = /Episode\s+((PV )?[S0-9][P0-9.]*[a-fA-F]?)\s*$/i; const episode = regexp.exec($(el).children('.series-title').text()); const address = $(el).attr('href'); if (!address || !episode) { return; } episodes.push({ address: address, episode: episode[1], volume: volume ? parseInt(volume[0], 10) : 1 }); }); done(null, {episodes: episodes.reverse(), series: title}); }); }