Do not repair if uncached check fails

internal/torrent/manager.go

@@ -51,7 +51,7 @@ func NewTorrentManager(cfg config.ConfigInterface, api *realdebrid.RealDebrid, w
 		repairs:         mapset.NewSet[string](),
 		allAccessKeys:   mapset.NewSet[string](),
 		latestState:     &LibraryState{},
-		requiredVersion: "20.01.2024",
+		requiredVersion: "24.01.2024",
 		workerPool:      workerPool,
 		repairPool:      repairPool,
 		log:             log,

internal/torrent/refresh.go

@@ -74,7 +74,7 @@ func (t *TorrentManager) RefreshTorrents() []string {
 		return false
 	})
 
-	freshKeys := mapset.NewSet[string]()
+	newlyFetchedKeys := mapset.NewSet[string]()
 	noInfoCount := 0
 	for info := range infoChan {
 		if info == nil {
@@ -83,7 +83,7 @@ func (t *TorrentManager) RefreshTorrents() []string {
 		}
 		accessKey := t.GetKey(info)
 		if !info.AnyInProgress() {
-			freshKeys.Add(accessKey)
+			newlyFetchedKeys.Add(accessKey)
 		}
 		if torrent, exists := allTorrents.Get(accessKey); !exists {
 			allTorrents.Set(accessKey, info)
@@ -96,7 +96,7 @@ func (t *TorrentManager) RefreshTorrents() []string {
 
 	var updatedPaths []string
 	// torrents yet to be assigned in a directory
-	freshKeys.Difference(t.allAccessKeys).Each(func(accessKey string) bool {
+	newlyFetchedKeys.Difference(t.allAccessKeys).Each(func(accessKey string) bool {
 		// assign to directories
 		tor, ok := allTorrents.Get(accessKey)
 		if !ok {
@@ -117,7 +117,7 @@ func (t *TorrentManager) RefreshTorrents() []string {
 		return false
 	})
 	// removed torrents
-	t.allAccessKeys.Difference(freshKeys).Each(func(accessKey string) bool {
+	t.allAccessKeys.Difference(newlyFetchedKeys).Each(func(accessKey string) bool {
 		t.Delete(accessKey, false)
 		return false
 	})
@@ -254,11 +254,19 @@ func (t *TorrentManager) mergeToMain(existing, toMerge *Torrent) Torrent {
 		Hash:            existing.Hash,
 		DownloadedIDs:   mapset.NewSet[string](),
 		InProgressIDs:   mapset.NewSet[string](),
-		Unrepairable:    existing.Unrepairable || toMerge.Unrepairable,
 		UnassignedLinks: existing.UnassignedLinks.Union(toMerge.UnassignedLinks),
 		BrokenLinks:     existing.BrokenLinks.Union(toMerge.BrokenLinks),
 	}
 
+	// unrepairable reason
+	if existing.UnrepairableReason != "" && toMerge.UnrepairableReason != "" && existing.UnrepairableReason != toMerge.UnrepairableReason {
+		mainTorrent.UnrepairableReason = fmt.Sprintf("%s, %s", existing.UnrepairableReason, toMerge.UnrepairableReason)
+	} else if existing.UnrepairableReason != "" {
+		mainTorrent.UnrepairableReason = existing.UnrepairableReason
+	} else if toMerge.UnrepairableReason != "" {
+		mainTorrent.UnrepairableReason = toMerge.UnrepairableReason
+	}
+
 	// this function triggers only when we have a new DownloadedID
 	toMerge.DownloadedIDs.Difference(existing.DownloadedIDs).Each(func(id string) bool {
 		mainTorrent.DownloadedIDs.Add(id)
@@ -288,6 +296,18 @@ func (t *TorrentManager) mergeToMain(existing, toMerge *Torrent) Torrent {
 		}
 	})
 
+	// broken links
+	if mainTorrent.BrokenLinks.Cardinality() > 0 {
+		mainTorrent.SelectedFiles.IterCb(func(_ string, file *File) {
+			mainTorrent.BrokenLinks.Each(func(brokenLink string) bool {
+				if file.Link == brokenLink {
+					file.Link = ""
+				}
+				return file.Link == brokenLink
+			})
+		})
+	}
+
 	if existing.Added < toMerge.Added {
 		mainTorrent.Added = toMerge.Added
 	} else {

internal/torrent/repair.go

@@ -18,68 +18,30 @@ const (
 
 func (t *TorrentManager) RepairAll() {
 	_ = t.repairPool.Submit(func() {
-		t.log.Info("Checking for broken torrents")
+		t.log.Info("Periodic repair invoked; searching for broken torrents")
 		t.repairAll()
-		t.log.Info("Finished checking for broken torrents")
 	})
 }
 
 func (t *TorrentManager) repairAll() {
 	allTorrents, _ := t.DirectoryMap.Get(INT_ALL)
 
-	var hashGroups []mapset.Set[string]
-	const maxGroupSize = 399
+	var toRepair mapset.Set[*Torrent]
 
-	currentGroup := mapset.NewSet[string]()
-	hashGroups = append(hashGroups, currentGroup)
-
-	allTorrents.IterCb(func(_ string, torrent *Torrent) {
-		if torrent.AnyInProgress() || torrent.Unrepairable {
-			return
-		}
-		if currentGroup.Cardinality() >= maxGroupSize {
-			currentGroup = mapset.NewSet[string]()
-			hashGroups = append(hashGroups, currentGroup)
-		}
-		currentGroup.Add(torrent.Hash)
-	})
-
-	t.log.Debug("Checking if torrents are still cached")
-	var availabilityChecks = make(map[string]bool)
-	uncachedCount := 0
-	for i := range hashGroups {
-		if hashGroups[i].Cardinality() == 0 {
-			break
-		}
-		resp, err := t.Api.AvailabilityCheck(hashGroups[i].ToSlice())
+	// check 1: for uncached torrents
+	uncachedTorrents, err := t.getUncachedTorrents()
 	if err != nil {
-			t.log.Warnf("Cannot check availability: %v", err)
-			continue
+		t.log.Warnf("Cannot check for uncached torrents: %v", err)
+		toRepair = mapset.NewSet[*Torrent]()
+	} else {
+		toRepair = mapset.NewSet[*Torrent](uncachedTorrents...)
 	}
 
-		for hash, hosterHash := range resp {
-			// Check if HosterHash is a map (Variants field is used)
-			availabilityChecks[hash] = len(hosterHash.Variants) > 0
-			if !availabilityChecks[hash] {
-				uncachedCount++
-			}
-		}
-	}
-	t.log.Debugf("Found %d torrents that are no longer cached", uncachedCount)
-
-	toRepair := mapset.NewSet[*Torrent]()
 	allTorrents.IterCb(func(_ string, torrent *Torrent) {
-		if torrent.AnyInProgress() || torrent.Unrepairable {
+		if torrent.AnyInProgress() || torrent.UnrepairableReason != "" {
 			return
 		}
 
-		// check 1: for cached status
-		isCached := true
-		if _, ok := availabilityChecks[torrent.Hash]; !ok || !availabilityChecks[torrent.Hash] {
-			isCached = false
-		}
-		// todo: also handle file ID checks
-
 		// check 2: for broken files
 		hasBrokenFiles := false
 		torrent.SelectedFiles.IterCb(func(_ string, file *File) {
@@ -87,16 +49,9 @@ func (t *TorrentManager) repairAll() {
 				hasBrokenFiles = true
 				return
 			}
-			if !isCached && strings.HasPrefix(file.Link, "http") {
-				unrestrict := t.UnrestrictUntilOk(file.Link)
-				if unrestrict == nil || file.Bytes != unrestrict.Filesize {
-					hasBrokenFiles = true
-					return
-				}
-			}
 		})
 
-		if !isCached || hasBrokenFiles || torrent.UnassignedLinks.Cardinality() > 0 {
+		if hasBrokenFiles || torrent.UnassignedLinks.Cardinality() > 0 {
 			toRepair.Add(torrent)
 		}
 	})
@@ -108,41 +63,44 @@ func (t *TorrentManager) repairAll() {
 }
 
 func (t *TorrentManager) Repair(torrent *Torrent) {
-	if torrent.Unrepairable {
-		t.log.Warnf("Torrent %s is unfixable, skipping repair", t.GetKey(torrent))
+	if torrent.UnrepairableReason != "" {
+		t.log.Warnf("Torrent %s is unfixable (%s), skipping repair", t.GetKey(torrent), torrent.UnrepairableReason)
 		return
 	}
 	if t.repairs.Contains(t.GetKey(torrent)) {
 		t.log.Warnf("Torrent %s is already being repaired, skipping repair", t.GetKey(torrent))
 		return
 	}
+	if torrent.AnyInProgress() {
+		t.log.Infof("Torrent %s is in progress, skipping repair until download is done", t.GetKey(torrent))
+		return
+	}
 	t.repairs.Add(t.GetKey(torrent))
 
 	// save the broken files to the file cache
+	// broken files are also added when trying to open a file
+	if torrent.BrokenLinks.Cardinality() > 0 {
 		infoCache, _ := t.DirectoryMap.Get(INT_INFO_CACHE)
 		torrent.DownloadedIDs.Each(func(id string) bool {
 			info, _ := infoCache.Get(id)
 			info.SelectedFiles.IterCb(func(_ string, file *File) {
-			torrent.BrokenLinks.Each(func(link string) bool {
-				if file.Link == link {
+				torrent.BrokenLinks.Each(func(brokenLink string) bool {
+					if file.Link == brokenLink {
 						file.Link = ""
 					}
-				return file.Link == link
+					return file.Link == brokenLink
 				})
 			})
 			t.writeTorrentToFile(id, info)
 			return false
 		})
-
-	t.log.Infof("Attempting repair for torrent %s", t.GetKey(torrent))
-	if torrent.AnyInProgress() {
-		t.log.Infof("Torrent %s is in progress, skipping repair until download is done", t.GetKey(torrent))
-		return
 	}
 
-	proceed := t.canCapacityHandle() // blocks for approx 45 minutes if active torrents are full
-	if !proceed {
-		t.log.Error("Reached the max number of active torrents, cannot continue with the repair")
+	t.log.Infof("Attempting repair for torrent %s", t.GetKey(torrent))
+
+	// blocks for approx 45 minutes if active torrents are full
+	if !t.canCapacityHandle() {
+		t.log.Error("Blocked for too long due to limit of active torrents, cannot continue with the repair")
 		return
 	}
 
@@ -185,7 +143,7 @@ func (t *TorrentManager) repair(torrent *Torrent) {
 
 		if !assigned {
 			// if not assigned and is a rar, likely it was rar'ed by RD
-			if strings.HasSuffix(unrestrict.Filename, ".rar") {
+			if strings.HasSuffix(strings.ToLower(unrestrict.Filename), ".rar") {
 				rarCount++
 			}
 			newUnassignedLinks.Set(link, unrestrict)
@@ -221,8 +179,8 @@ func (t *TorrentManager) repair(torrent *Torrent) {
 				torrent.SelectedFiles.Set(unassigned.Filename, newFile)
 			})
 			torrent.UnassignedLinks = mapset.NewSet[string]()
-			t.markAsUnfixable(torrent)
-			t.markAsUnplayable(torrent)
+			t.markAsUnfixable(torrent, "rar'ed by RD")
+			t.markAsUnplayable(torrent, "rar'ed by RD")
 		}
 		return
 	}
@@ -233,22 +191,25 @@ func (t *TorrentManager) repair(torrent *Torrent) {
 	brokenFileIDs := strings.Join(fileIDs, ",")
 
 	// first solution: reinsert and see if the broken file is now working
-	t.log.Debugf("repair_method#1: Trying to redownload torrent %s to repair files (%s)", t.GetKey(torrent), brokenFileIDs)
+	t.log.Debugf("repair_method#1: Trying to redownload torrent %s to repair files", t.GetKey(torrent))
 	info, err := t.redownloadTorrent(torrent, "")
 	if err != nil {
 		t.log.Warnf("Cannot repair torrent %s using repair_method#1", t.GetKey(torrent))
-	}
-	if info != nil && info.Progress != 100 {
+	} else if info != nil && info.Progress != 100 {
 		t.log.Infof("Redownloading torrent %s after repair_method#1, it should work once done", t.GetKey(torrent))
 		return
-	}
-	if info != nil && info.IsDone() && !t.isStillBroken(info, brokenFiles) {
+	} else if info != nil && info.IsDone() && !t.isStillBroken(info, brokenFiles) {
 		t.log.Infof("Successfully repaired torrent %s using repair_method#1", t.GetKey(torrent))
 		return
-	}
-	if info != nil && info.ID != "" {
-		t.log.Warnf("Torrent %s is still broken after repair_method#1, cleaning up", t.GetKey(torrent))
+	} else if info != nil && info.ID != "" {
+		t.log.Warnf("Torrent %s is still broken after repair_method#1, cleaning up (deleting ID=%s)", t.GetKey(torrent), info.ID)
 		t.Api.DeleteTorrent(info.ID)
+		t.fixers.Set(info.ID, torrent)
+	}
+
+	if torrent.UnrepairableReason != "" {
+		t.log.Warnf("Torrent %s has been marked as unfixable (%s), ending repair process", t.GetKey(torrent), torrent.UnrepairableReason)
+		return
 	}
 
 	// second solution: add only the broken files
@@ -261,7 +222,7 @@ func (t *TorrentManager) repair(torrent *Torrent) {
 			t.log.Infof("Successfully repaired torrent %s using repair_method#2", t.GetKey(torrent))
 		}
 	} else {
-		t.log.Warnf("Torrent %s has no broken files to repair", t.GetKey(torrent))
+		t.log.Infof("Torrent %s has no broken files to repair", t.GetKey(torrent))
 	}
 }
 
@@ -287,7 +248,7 @@ func (t *TorrentManager) redownloadTorrent(torrent *Torrent, brokenFiles string)
 	resp, err := t.Api.AddMagnetHash(torrent.Hash)
 	if err != nil {
 		if strings.Contains(err.Error(), "infringing_file") {
-			t.markAsUnfixable(torrent)
+			t.markAsUnfixable(torrent, "infringing_file")
 		}
 		return nil, fmt.Errorf("cannot redownload torrent: %v", err)
 	}
@@ -330,6 +291,7 @@ func (t *TorrentManager) redownloadTorrent(torrent *Torrent, brokenFiles string)
 		if len(oldTorrentIDs) > 0 {
 			for _, id := range oldTorrentIDs {
 				t.Api.DeleteTorrent(id)
+				t.fixers.Set(id, torrent)
 			}
 		} else {
 			t.fixers.Set(newTorrentID, torrent)
@@ -348,6 +310,7 @@ func (t *TorrentManager) redownloadTorrent(torrent *Torrent, brokenFiles string)
 		// only triggered when brokenFiles == ""
 		for _, id := range oldTorrentIDs {
 			t.Api.DeleteTorrent(id)
+			t.fixers.Set(id, torrent)
 		}
 	} else {
 		t.fixers.Set(newTorrentID, torrent)
@@ -398,8 +361,8 @@ func (t *TorrentManager) canCapacityHandle() bool {
 	}
 }
 
-func (t *TorrentManager) markAsUnplayable(torrent *Torrent) {
-	t.log.Warnf("Marking torrent %s as unplayable", t.GetKey(torrent))
+func (t *TorrentManager) markAsUnplayable(torrent *Torrent, reason string) {
+	t.log.Warnf("Marking torrent %s as unplayable - %s", t.GetKey(torrent), reason)
 	t.DirectoryMap.IterCb(func(directory string, torrents cmap.ConcurrentMap[string, *Torrent]) {
 		torrents.Remove(t.GetKey(torrent))
 	})
@@ -407,13 +370,13 @@ func (t *TorrentManager) markAsUnplayable(torrent *Torrent) {
 	torrents.Set(t.GetKey(torrent), torrent)
 }
 
-func (t *TorrentManager) markAsUnfixable(torrent *Torrent) {
-	t.log.Warnf("Marking torrent %s as unfixable", t.GetKey(torrent))
-	torrent.Unrepairable = true
+func (t *TorrentManager) markAsUnfixable(torrent *Torrent, reason string) {
+	t.log.Warnf("Marking torrent %s as unfixable - %s", t.GetKey(torrent), reason)
+	torrent.UnrepairableReason = reason
 	infoCache, _ := t.DirectoryMap.Get(INT_INFO_CACHE)
 	torrent.DownloadedIDs.Each(func(id string) bool {
 		info, _ := infoCache.Get(id)
-		info.Unrepairable = true
+		info.UnrepairableReason = reason
 		t.writeTorrentToFile(id, info)
 		return false
 	})
@@ -431,7 +394,6 @@ func getBrokenFiles(torrent *Torrent) []*File {
 
 func (t *TorrentManager) isStillBroken(info *realdebrid.TorrentInfo, brokenFiles []*File) bool {
 	var selectedFiles []*File
-	// if some Links are empty, we need to repair it
 	for _, file := range info.Files {
 		if file.Selected == 0 {
 			continue
@@ -448,8 +410,15 @@ func (t *TorrentManager) isStillBroken(info *realdebrid.TorrentInfo, brokenFiles
 			file.Link = info.Links[i]
 		}
 	} else {
+		// if we can't assign links, it's still broken
 		return true
 	}
+
+	if len(brokenFiles) == 0 {
+		// just check for the last file
+		brokenFiles = append(brokenFiles, selectedFiles[len(selectedFiles)-1])
+	}
+
 	for _, oldFile := range brokenFiles {
 		for idx, newFile := range selectedFiles {
 			if oldFile.Path == newFile.Path || oldFile.Bytes == newFile.Bytes {

internal/torrent/types.go

@@ -23,7 +23,7 @@ type Torrent struct {
 	OriginalName       string                            `json:"OriginalName"`    // immutable
 	Rename             string                            `json:"Rename"`          // modified over time
 	SelectedFiles      cmap.ConcurrentMap[string, *File] `json:"-"`               // modified over time
-	Unrepairable    bool                              `json:"Unfixable"`       // modified over time
+	UnrepairableReason string                            `json:"Unfixable"`       // modified over time
 	BrokenLinks        mapset.Set[string]                `json:"BrokenLinks"`     // only relevant on repair
 
 	Version string `json:"Version"` // only used for files

internal/torrent/uncached.go

@@ -0,0 +1,56 @@
+package torrent
+
+import (
+	"fmt"
+
+	mapset "github.com/deckarep/golang-set/v2"
+)
+
+func (t *TorrentManager) getUncachedTorrents() ([]*Torrent, error) {
+	t.log.Debug("Checking if torrents are still cached")
+	allTorrents, _ := t.DirectoryMap.Get(INT_ALL)
+
+	var hashGroups []mapset.Set[string]
+	const maxGroupSize = 399
+
+	currentGroup := mapset.NewSet[string]()
+	hashGroups = append(hashGroups, currentGroup)
+
+	allTorrents.IterCb(func(_ string, torrent *Torrent) {
+		if torrent.AnyInProgress() || torrent.UnrepairableReason != "" {
+			return
+		}
+
+		if currentGroup.Cardinality() >= maxGroupSize {
+			currentGroup = mapset.NewSet[string]()
+			hashGroups = append(hashGroups, currentGroup)
+		}
+		currentGroup.Add(torrent.Hash)
+	})
+
+	var availabilityChecks = make(map[string]bool)
+	for i := range hashGroups {
+		if hashGroups[i].Cardinality() == 0 {
+			break
+		}
+
+		resp, err := t.Api.AvailabilityCheck(hashGroups[i].ToSlice())
+		if err != nil {
+			return nil, fmt.Errorf("availability check is incomplete, skipping uncached check: %v", err)
+		}
+		for hash, hosterHash := range resp {
+			// Check if HosterHash is a map (Variants field is used)
+			availabilityChecks[hash] = len(hosterHash.Variants) > 0
+		}
+	}
+
+	var uncachedTorrents []*Torrent
+	allTorrents.IterCb(func(_ string, torrent *Torrent) {
+		if _, ok := availabilityChecks[torrent.Hash]; !ok || !availabilityChecks[torrent.Hash] {
+			uncachedTorrents = append(uncachedTorrents, torrent)
+		}
+	})
+	t.log.Debugf("Found %d torrents that are no longer cached", len(uncachedTorrents))
+
+	return uncachedTorrents, nil
+}

internal/universal/downloader.go

@@ -54,9 +54,9 @@ func (dl *Downloader) DownloadFile(directory, torrentName, fileName string, resp
 	unrestrict := torMgr.UnrestrictUntilOk(link)
 	if unrestrict == nil {
 		log.Warnf("File %s cannot be unrestricted (link=%s)", fileName, link)
-		if cfg.EnableRepair() {
 		torrent.BrokenLinks.Add(file.Link)
 		file.Link = "repair"
+		if cfg.EnableRepair() {
 			torMgr.SetNewLatestState(intTor.LibraryState{})
 		} else {
 			log.Infof("Repair is disabled, skipping repair for unavailable file %s (link=%s)", fileName, link)
@@ -166,9 +166,9 @@ func (dl *Downloader) streamFileToResponse(torrent *intTor.Torrent, file *intTor
 	if err != nil {
 		log.Warnf("Cannot download file %s: %v", unrestrict.Download, err)
 		if file != nil && unrestrict.Streamable == 1 {
-			if cfg.EnableRepair() && torrent != nil {
 			torrent.BrokenLinks.Add(file.Link)
 			file.Link = "repair"
+			if cfg.EnableRepair() && torrent != nil {
 				torMgr.SetNewLatestState(intTor.LibraryState{})
 			} else {
 				log.Infof("Repair is disabled, skipping repair for unavailable file %s (link=%s)", file.Path, file.Link)
@@ -177,14 +177,13 @@ func (dl *Downloader) streamFileToResponse(torrent *intTor.Torrent, file *intTor
 		http.Error(resp, "File is not available", http.StatusNotFound)
 		return
 	}
-	defer download.Body.Close()
 
 	if download.StatusCode != http.StatusOK && download.StatusCode != http.StatusPartialContent {
 		if file != nil && unrestrict.Streamable == 1 {
 			log.Warnf("Received a %s status code for file %s", download.Status, file.Path)
-			if cfg.EnableRepair() && torrent != nil {
 			torrent.BrokenLinks.Add(file.Link)
 			file.Link = "repair"
+			if cfg.EnableRepair() && torrent != nil {
 				torMgr.SetNewLatestState(intTor.LibraryState{})
 			} else {
 				log.Infof("Repair is disabled, skipping repair for unavailable file %s (link=%s)", file.Path, file.Link)