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115 lines
2.7 KiB
Go
115 lines
2.7 KiB
Go
package main
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import (
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"database/sql"
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"errors"
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"log"
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"strconv"
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"strings"
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"time"
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"github.com/lib/pq"
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_ "github.com/lib/pq"
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"github.com/mmcdole/gofeed"
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)
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type Torrent struct {
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Infohash string
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Name string
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Length int
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}
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func main() {
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db := initDb()
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crawled := make(map[string]bool) // set to not needlessly send all torrents to db to check if we found them already
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for {
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torrents := CrawlYts()
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for _, torrent := range torrents {
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addTorrent(db, torrent, &crawled)
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}
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time.Sleep(time.Minute * 30)
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}
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}
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func addTorrent(db *sql.DB, torr Torrent, crawled *map[string]bool) {
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if !(*crawled)[string(torr.Infohash)] {
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_, err := db.Exec("INSERT INTO torrent (infohash, name, length) VALUES ($1, $2, $3)", torr.Infohash, torr.Name, torr.Length)
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if err, ok := err.(*pq.Error); ok { //dark magic
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if err.Code != "23505" {
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log.Fatal(err)
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}
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}
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(*crawled)[torr.Infohash] = true
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}
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}
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//todo https://rarbg.to/rssdd.php?category=44
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func CrawlYts() []Torrent {
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fp := gofeed.NewParser()
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feed, err := fp.ParseURL("https://yts.mx/rss/0/all/all/0")
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if err != nil {
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log.Fatal(err)
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}
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var torrents []Torrent
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for _, item := range feed.Items {
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size, err := parseSizeYts(item.Description)
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if err != nil {
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log.Print(err)
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continue
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}
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ih, err := parseInfohashYts(item.Enclosures[0].URL)
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torrents = append(torrents, Torrent{ih, item.Title, size})
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}
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return torrents
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}
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// Parses torrent length from YTS description
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func parseSizeYts(description string) (int, error) {
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s := strings.Split(description, "<br />Size: ")
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if len(s) == 0 {
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return 0, errors.New("Couldn't find '<br />Size: ' in item description")
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}
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s = strings.Split(s[1], "B<br />Runtime: ")
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if len(s) == 0 {
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return 0, errors.New("Couldn't find 'B<br />Runtime: ' in item description")
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}
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length, err := strconv.ParseFloat(s[0][:len(s[0])-2], 64)
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if err != nil {
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return 0, err
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}
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if s[0][len(s[0])-1:] == "G" {
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return int(length * 1000000000), nil
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} else if s[0][len(s[0])-1:] == "M" {
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return int(length * 1000000), nil
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} else {
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return 0, errors.New("Invalid char in place of length specifier")
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}
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}
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func parseInfohashYts(url string) (string, error) {
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s := strings.Split(url, "torrent/download/")
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if len(s) == 0 {
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return "", errors.New("invalid URL")
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}
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return strings.ToLower(s[1]), nil
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}
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func initDb() *sql.DB {
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connStr := "user=nextgen dbname=nextgen host=/var/run/postgresql"
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db, err := sql.Open("postgres", connStr)
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if err != nil {
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log.Fatal(err)
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}
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_, err = db.Exec(`CREATE TABLE IF NOT EXISTS torrent (
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infohash char(40) PRIMARY KEY NOT NULL,
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name varchar NOT NULL,
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length bigint,
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added timestamp DEFAULT current_timestamp
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)`)
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if err != nil {
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log.Fatal(err)
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}
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return db
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}
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