338 lines
8.4 KiB
Go
338 lines
8.4 KiB
Go
package handler
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"regexp"
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"strings"
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"time"
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"github.com/PuerkitoBio/goquery"
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"github.com/felipemarinho97/torrent-indexer/schema"
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goscrape "github.com/felipemarinho97/torrent-indexer/scrape"
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)
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const (
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URL = "https://comando.la/"
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queryFilter = "?s="
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)
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var replacer = strings.NewReplacer(
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"janeiro", "01",
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"fevereiro", "02",
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"março", "03",
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"abril", "04",
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"maio", "05",
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"junho", "06",
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"julho", "07",
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"agosto", "08",
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"setembro", "09",
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"outubro", "10",
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"novembro", "11",
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"dezembro", "12",
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)
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type IndexedTorrent struct {
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Title string `json:"title"`
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OriginalTitle string `json:"original_title"`
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Details string `json:"details"`
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Year string `json:"year"`
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Audio []schema.Audio `json:"audio"`
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MagnetLink string `json:"magnet_link"`
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Date time.Time `json:"date"`
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InfoHash string `json:"info_hash"`
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Trackers []string `json:"trackers"`
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LeechCount int `json:"leech_count"`
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SeedCount int `json:"seed_count"`
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}
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func (i *Indexer) HandlerComandoIndexer(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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// supported query params: q, season, episode
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q := r.URL.Query().Get("q")
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// URL encode query param
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q = url.QueryEscape(q)
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url := URL
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if q != "" {
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url = fmt.Sprintf("%s%s%s", URL, queryFilter, q)
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}
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fmt.Println("URL:>", url)
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resp, err := http.Get(url)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
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return
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}
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defer resp.Body.Close()
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doc, err := goquery.NewDocumentFromReader(resp.Body)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
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return
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}
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var links []string
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doc.Find("article").Each(func(i int, s *goquery.Selection) {
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// get link from h2.entry-title > a
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link, _ := s.Find("h2.entry-title > a").Attr("href")
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links = append(links, link)
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})
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var itChan = make(chan []IndexedTorrent)
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var errChan = make(chan error)
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var indexedTorrents []IndexedTorrent
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for _, link := range links {
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go func(link string) {
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torrents, err := getTorrents(ctx, i, link)
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if err != nil {
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fmt.Println(err)
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errChan <- err
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}
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itChan <- torrents
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}(link)
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}
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for i := 0; i < len(links); i++ {
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select {
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case torrents := <-itChan:
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indexedTorrents = append(indexedTorrents, torrents...)
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case err := <-errChan:
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fmt.Println(err)
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}
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(indexedTorrents)
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}
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func getTorrents(ctx context.Context, i *Indexer, link string) ([]IndexedTorrent, error) {
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var indexedTorrents []IndexedTorrent
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doc, err := getDocument(ctx, i, link)
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if err != nil {
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return nil, err
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}
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article := doc.Find("article")
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title := strings.Replace(article.Find(".entry-title").Text(), " - Download", "", -1)
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textContent := article.Find("div.entry-content")
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// div itemprop="datePublished"
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datePublished := strings.TrimSpace(article.Find("div[itemprop=\"datePublished\"]").Text())
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// pattern: 10 de setembro de 2021
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re := regexp.MustCompile(`(\d{2}) de (\w+) de (\d{4})`)
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matches := re.FindStringSubmatch(datePublished)
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var date time.Time
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if len(matches) > 0 {
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day := matches[1]
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month := matches[2]
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year := matches[3]
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datePublished = fmt.Sprintf("%s-%s-%s", year, replacer.Replace(month), day)
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date, err = time.Parse("2006-01-02", datePublished)
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if err != nil {
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return nil, err
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}
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}
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magnets := textContent.Find("a[href^=\"magnet\"]")
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var magnetLinks []string
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magnets.Each(func(i int, s *goquery.Selection) {
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magnetLink, _ := s.Attr("href")
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magnetLinks = append(magnetLinks, magnetLink)
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})
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var audio []schema.Audio
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var year string
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article.Find("div.entry-content > p").Each(func(i int, s *goquery.Selection) {
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// pattern:
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// Título Traduzido: Fundação
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// Título Original: Foundation
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// IMDb: 7,5
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// Ano de Lançamento: 2023
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// Gênero: Ação | Aventura | Ficção
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// Formato: MKV
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// Qualidade: WEB-DL
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// Áudio: Português | Inglês
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// Idioma: Português | Inglês
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// Legenda: Português
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// Tamanho: –
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// Qualidade de Áudio: 10
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// Qualidade de Vídeo: 10
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// Duração: 59 Min.
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// Servidor: Torrent
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text := s.Text()
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//re := regexp.MustCompile(`Áudio: (.*)`)
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re := regexp.MustCompile(`(Áudio|Idioma): (.*)`)
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audioMatch := re.FindStringSubmatch(text)
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if len(audioMatch) > 0 {
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sep := getSeparator(audioMatch[2])
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langs_raw := strings.Split(audioMatch[2], sep)
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for _, lang := range langs_raw {
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lang = strings.TrimSpace(lang)
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a := schema.GetAudioFromString(lang)
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if a != nil {
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audio = append(audio, *a)
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} else {
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fmt.Println("unknown language:", lang)
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}
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}
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}
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re = regexp.MustCompile(`Lançamento: (.*)`)
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yearMatch := re.FindStringSubmatch(text)
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if len(yearMatch) > 0 {
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year = yearMatch[1]
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}
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// if year is empty, try to get it from title
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if year == "" {
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re = regexp.MustCompile(`\((\d{4})\)`)
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yearMatch := re.FindStringSubmatch(title)
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if len(yearMatch) > 0 {
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year = yearMatch[1]
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}
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}
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})
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// for each magnet link, create a new indexed torrent
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for _, magnetLink := range magnetLinks {
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releaseTitle := extractReleaseName(magnetLink)
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magnetAudio := []schema.Audio{}
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if strings.Contains(strings.ToLower(releaseTitle), "dual") {
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magnetAudio = append(magnetAudio, audio...)
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} else if len(audio) > 1 {
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// remove portuguese audio, and append to magnetAudio
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for _, a := range audio {
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if a != schema.AudioPortuguese {
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magnetAudio = append(magnetAudio, a)
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}
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}
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} else {
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magnetAudio = append(magnetAudio, audio...)
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}
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// decode url encoded title
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releaseTitle, _ = url.QueryUnescape(releaseTitle)
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infoHash := extractInfoHash(magnetLink)
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trackers := extractTrackers(magnetLink)
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peer, seed, err := goscrape.GetLeechsAndSeeds(ctx, i.redis, infoHash, trackers)
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if err != nil {
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fmt.Println(err)
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}
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title := processTitle(title, magnetAudio)
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indexedTorrents = append(indexedTorrents, IndexedTorrent{
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Title: releaseTitle,
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OriginalTitle: title,
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Details: link,
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Year: year,
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Audio: magnetAudio,
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MagnetLink: magnetLink,
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Date: date,
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InfoHash: infoHash,
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Trackers: trackers,
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LeechCount: peer,
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SeedCount: seed,
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})
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}
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return indexedTorrents, nil
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}
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func processTitle(title string, a []schema.Audio) string {
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// remove ' - Donwload' from title
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title = strings.Replace(title, " - Download", "", -1)
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// remove 'comando.la' from title
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title = strings.Replace(title, "comando.la", "", -1)
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// add audio ISO 639-2 code to title between ()
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if len(a) > 0 {
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audio := []string{}
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for _, lang := range a {
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audio = append(audio, lang.String())
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}
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title = fmt.Sprintf("%s (%s)", title, strings.Join(audio, ", "))
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}
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return title
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}
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func getSeparator(s string) string {
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if strings.Contains(s, "|") {
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return "|"
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} else if strings.Contains(s, ",") {
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return ","
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}
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return " "
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}
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func getDocument(ctx context.Context, i *Indexer, link string) (*goquery.Document, error) {
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// try to get from redis first
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docCache, err := i.redis.Get(ctx, link)
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if err == nil {
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return goquery.NewDocumentFromReader(ioutil.NopCloser(bytes.NewReader(docCache)))
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}
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resp, err := http.Get(link)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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// set cache
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err = i.redis.Set(ctx, link, body)
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if err != nil {
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fmt.Println(err)
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}
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doc, err := goquery.NewDocumentFromReader(ioutil.NopCloser(bytes.NewReader(body)))
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if err != nil {
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return nil, err
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}
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return doc, nil
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}
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func extractReleaseName(magnetLink string) string {
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re := regexp.MustCompile(`dn=(.*?)&`)
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matches := re.FindStringSubmatch(magnetLink)
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if len(matches) > 0 {
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return matches[1]
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}
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return ""
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}
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func extractInfoHash(magnetLink string) string {
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re := regexp.MustCompile(`btih:(.*?)&`)
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matches := re.FindStringSubmatch(magnetLink)
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if len(matches) > 0 {
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return matches[1]
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}
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return ""
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}
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func extractTrackers(magnetLink string) []string {
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re := regexp.MustCompile(`tr=(.*?)&`)
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matches := re.FindAllStringSubmatch(magnetLink, -1)
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var trackers []string
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for _, match := range matches {
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// url decode
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tracker, _ := url.QueryUnescape(match[1])
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trackers = append(trackers, tracker)
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}
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return trackers
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}
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