Files
zurg/internal/dav/getfile.go
Ben Sarmiento 6eccba394c Add caching
2023-10-22 13:29:41 +02:00

101 lines
3.4 KiB
Go

package dav
import (
"fmt"
"log"
"net/http"
"path"
"path/filepath"
"strings"
"github.com/debridmediamanager.com/zurg/internal/config"
"github.com/debridmediamanager.com/zurg/internal/torrent"
"github.com/debridmediamanager.com/zurg/pkg/davextra"
"github.com/debridmediamanager.com/zurg/pkg/realdebrid"
"github.com/hashicorp/golang-lru/v2/expirable"
)
// HandleGetRequest handles a GET request to a file
func HandleGetRequest(w http.ResponseWriter, r *http.Request, t *torrent.TorrentManager, c config.ConfigInterface, cache *expirable.LRU[string, string]) {
requestPath := path.Clean(r.URL.Path)
if requestPath == "/favicon.ico" {
return
}
segments := strings.Split(requestPath, "/")
// If there are less than 3 segments, return an error or adjust as needed
if len(segments) < 4 {
// log.Println("Invalid url", requestPath)
// http.Error(w, "Cannot find file", http.StatusNotFound)
HandlePropfindRequest(w, r, t, c, cache)
return
}
if data, exists := cache.Get(requestPath); exists {
http.Redirect(w, r, data, http.StatusFound)
return
}
// Get the last two segments
baseDirectory := segments[len(segments)-3]
torrentName := segments[len(segments)-2]
filename := segments[len(segments)-1]
torrents := findAllTorrentsWithName(t, baseDirectory, torrentName)
if torrents == nil {
log.Println("Cannot find torrent", torrentName)
http.Error(w, "Cannot find file", http.StatusNotFound)
return
}
filenameV2, linkFragment := davextra.ExtractLinkFragment(filename)
torrent, file := getFile(torrents, filenameV2, linkFragment)
if file == nil {
log.Println("Cannot find file", filename)
http.Error(w, "Cannot find file", http.StatusNotFound)
return
}
if file.Link == "" {
log.Println("Link not found", filename)
http.Error(w, "Cannot find file", http.StatusNotFound)
return
}
link := file.Link
unrestrictFn := func() (*realdebrid.UnrestrictResponse, error) {
return realdebrid.UnrestrictLink(c.GetToken(), link)
}
resp := realdebrid.RetryUntilOk(unrestrictFn)
if resp == nil {
// TODO: Readd the file
// when unrestricting fails, it means the file is not available anymore, but still in their database
// if it's the only file, tough luck
// if it's the only file, try to readd it
// delete the old one, add a new one
log.Println("Cannot unrestrict link", link, filenameV2)
t.MarkFileAsDeleted(torrent, file)
http.Error(w, "Cannot find file", http.StatusNotFound)
return
}
if resp.Filename != filenameV2 {
// TODO: Redo the logic to handle mismatch
// [SRS] Pokemon S22E01-35 1080p WEBRip AAC 2.0 x264 CC.rar
// Pokemon.S22E24.The.Secret.Princess.DUBBED.1080p.WEBRip.AAC.2.0.x264-SRS.mkv
// Action: schedule a "cleanup" job for the parent torrent
// If the file extension changed, that means it's a different file
log.Println("Filename mismatch", resp.Filename, filenameV2)
}
cache.Add(requestPath, resp.Download)
http.Redirect(w, r, resp.Download, http.StatusFound)
}
// getFile finds a link by a fragment, it might be wrong
func getFile(torrents []torrent.Torrent, filename, fragment string) (*torrent.Torrent, *torrent.File) {
for t := range torrents {
for f, file := range torrents[t].SelectedFiles {
fname := filepath.Base(file.Path)
if filename == fname && strings.HasPrefix(file.Link, fmt.Sprintf("https://real-debrid.com/d/%s", fragment)) {
return &torrents[t], &torrents[t].SelectedFiles[f]
}
}
}
return nil, nil
}