torrent-indexer/api/indexers/comando_torrents.go

package indexers

import (
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"regexp"

	"github.com/PuerkitoBio/goquery"
)

const (
	URL         = "https://comando.la/"
	queryFilter = "?s="
)

type Audio string

const (
	AudioPortuguese = "Português"
	AudioEnglish    = "Inglês"
	AudioSpanish    = "Espanhol"
)

type IndexedTorrent struct {
	Title         string  `json:"title"`
	OriginalTitle string  `json:"original_title"`
	Details       string  `json:"details"`
	Year          string  `json:"year"`
	Audio         []Audio `json:"audio"`
	MagnetLink    string  `json:"magnet_link"`
}

func HandlerComandoIndexer(w http.ResponseWriter, r *http.Request) {
	// supported query params: q, season, episode
	q := r.URL.Query().Get("q")
	if q == "" {
		w.WriteHeader(http.StatusBadRequest)
		json.NewEncoder(w).Encode(map[string]string{"error": "param q is required"})
		return
	}

	// URL encode query param
	q = url.QueryEscape(q)
	url := URL + queryFilter + q

	fmt.Println("URL:>", url)
	resp, err := http.Get(url)
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
		return
	}
	defer resp.Body.Close()

	doc, err := goquery.NewDocumentFromReader(resp.Body)
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
		return
	}

	var links []string
	doc.Find("article").Each(func(i int, s *goquery.Selection) {
		// get link from h2.entry-title > a
		link, _ := s.Find("h2.entry-title > a").Attr("href")
		links = append(links, link)
	})
	fmt.Println(links)
	fmt.Println(doc.Text())

	var indexedTorrents []IndexedTorrent
	for _, link := range links {
		torrents, err := getTorrents(link)
		if err != nil {
			fmt.Println(err)
			continue
		}
		indexedTorrents = append(indexedTorrents, torrents...)
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(indexedTorrents)
}

func getTorrents(link string) ([]IndexedTorrent, error) {
	var indexedTorrents []IndexedTorrent
	resp, err := http.Get(link)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	doc, err := goquery.NewDocumentFromReader(resp.Body)
	if err != nil {
		return nil, err
	}

	article := doc.Find("article")
	title := article.Find("h2.entry-title > a").Text()
	textContent := article.Find("div.entry-content")
	magnets := textContent.Find("a[href^=\"magnet\"]")
	var magnetLinks []string
	magnets.Each(func(i int, s *goquery.Selection) {
		magnetLink, _ := s.Attr("href")
		magnetLinks = append(magnetLinks, magnetLink)
	})

	var audio []Audio
	var year string
	article.Find("div.entry-content > p").Each(func(i int, s *goquery.Selection) {
		// pattern:
		// Título Traduzido: Fundação
		// Título Original: Foundation
		// IMDb: 7,5
		// Ano de Lançamento: 2023
		// Gênero: Ação | Aventura | Ficção
		// Formato: MKV
		// Qualidade: WEB-DL
		// Áudio: Português | Inglês
		// Legenda: Português
		// Tamanho: –
		// Qualidade de Áudio: 10
		// Qualidade de Vídeo: 10
		// Duração: 59 Min.
		// Servidor: Torrent

		re := regexp.MustCompile(`Áudio: (.*)`)
		audioMatch := re.FindStringSubmatch(s.Text())
		if len(audioMatch) > 0 {
			audio = append(audio, Audio(audioMatch[1]))
		}

		re = regexp.MustCompile(`Ano de Lançamento: (.*)`)
		yearMatch := re.FindStringSubmatch(s.Text())
		if len(yearMatch) > 0 {
			year = yearMatch[1]
		}
	})

	// for each magnet link, create a new indexed torrent
	for _, magnetLink := range magnetLinks {
		indexedTorrents = append(indexedTorrents, IndexedTorrent{
			Title:         extractReleaseName(magnetLink),
			OriginalTitle: title,
			Details:       link,
			Year:          year,
			Audio:         audio,
			MagnetLink:    magnetLink,
		})
	}

	return indexedTorrents, nil
}

func extractReleaseName(magnetLink string) string {
	re := regexp.MustCompile(`dn=(.*)&`)
	matches := re.FindStringSubmatch(magnetLink)
	if len(matches) > 0 {
		return matches[1]
	}
	return ""
}