feat: add download stats info (#323)

internal/fetcher/fetcher.go

@@ -21,6 +21,8 @@ type Fetcher interface {
 	Pause() error
 	Close() error
 
+	// Stats refreshes health statistics and returns the latest information
+	Stats() any
 	// Meta returns the meta information of the download.
 	Meta() *FetcherMeta
 	// Progress returns the progress of the download.

internal/protocol/bt/fetcher.go

@@ -128,6 +128,7 @@ func (f *Fetcher) Start() (err error) {
 			file.Download()
 		}
 	}
+
 	return
 }
 
@@ -188,6 +189,16 @@ func (f *Fetcher) Meta() *fetcher.FetcherMeta {
 	return f.meta
 }
 
+func (f *Fetcher) Stats() any {
+	stats := f.torrent.Stats()
+	baseStats := &bt.Stats{
+		TotalPeers:       stats.TotalPeers,
+		ActivePeers:      stats.ActivePeers,
+		ConnectedSeeders: stats.ConnectedSeeders,
+	}
+	return baseStats
+}
+
 func (f *Fetcher) Progress() fetcher.Progress {
 	if !f.torrentReady.Load() {
 		return f.progress

internal/protocol/http/fetcher.go

@@ -218,6 +218,11 @@ func (f *Fetcher) Meta() *fetcher.FetcherMeta {
 	return f.meta
 }
 
+func (f *Fetcher) Stats() any {
+	// todo http download health
+	return &fhttp.Stats{}
+}
+
 func (f *Fetcher) Progress() fetcher.Progress {
 	p := make(fetcher.Progress, 0)
 	if len(f.chunks) > 0 {