feat: add download stats info

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 {

pkg/protocol/bt/model.go

@@ -3,3 +3,12 @@ package bt
 type ReqExtra struct {
 	Trackers []string `json:"trackers"`
 }
+
+// Stats for download
+type Stats struct {
+	// bt stats
+	// health indicators of torrents, from large to small, ConnectedSeeders are also the key to the health of seed resources
+	TotalPeers       int `json:"totalPeers"`
+	ActivePeers      int `json:"activePeers"`
+	ConnectedSeeders int `json:"connectedSeeders"`
+}

pkg/protocol/http/model.go

@@ -9,3 +9,9 @@ type ReqExtra struct {
 type OptsExtra struct {
 	Connections int `json:"connections"`
 }
+
+// Stats for download
+type Stats struct {
+	// http stats
+	// health indicators of http
+}