Added error hadnling

util.go

@@ -37,7 +37,7 @@ func DoAssetsRequest(addonID, version string) (AssetsReply, error) {
 		// print entire body
 		body, _ := io.ReadAll(res.Body)
 		fmt.Println(string(body))
-		panic("bad status: " + res.Status)
+		return AssetsReply{}, fmt.Errorf("bad status: %s", res.Status)
 	}
 
 	// Process response
@@ -80,7 +80,7 @@ func Download(manifest Manifest, downloadDir string, filen string) ([]byte, erro
 
 	if Debug {
 		// create the directory if it doesn't exist
-		if err := os.MkdirAll(downloadDir + "/fragments/" + filen, os.ModePerm); err != nil {
+		if err := os.MkdirAll(downloadDir+"/fragments/"+filen, os.ModePerm); err != nil {
 			return nil, err
 		}
 	}
@@ -89,7 +89,7 @@ func Download(manifest Manifest, downloadDir string, filen string) ([]byte, erro
 	downloaded := 0
 	remContent := make([]byte, 0)
 	currentRem := 0
-	if (manifest.Remainder.Size > 0) {
+	if manifest.Remainder.Size > 0 {
 		url := transformShaToURL(manifest.Remainder.Sha512, manifest.Remainder.Size)
 		content, err := getContent(url)
 		if err != nil {
@@ -97,7 +97,7 @@ func Download(manifest Manifest, downloadDir string, filen string) ([]byte, erro
 		}
 		remContent = content
 		downloaded += len(content)
-		
+
 		if Debug {
 			// save remainder to file in the fragments/ directory, prefix with gap
 			if err := os.WriteFile(filepath.Join(downloadDir, "fragments", filen, fmt.Sprintf("%d.%s.%d.bytes", manifest.Remainder.Offsets[0], manifest.Remainder.Sha512, manifest.Remainder.Size)), remContent, os.ModePerm); err != nil {
@@ -105,12 +105,13 @@ func Download(manifest Manifest, downloadDir string, filen string) ([]byte, erro
 			}
 		}
 	}
-	
+
 	trackFrag := make([]Frag, 0)
 
 	// start downloading chunks
 	//currentOffset := 0
 	ret := make([]byte, manifest.Size)
+	totalMB := float32(manifest.Size) / 1024.0 / 1024.0
 	for _, fragment := range manifest.Fragments {
 		url := transformShaToURL(fragment.Sha512, fragment.Size)
 		content, err := getContent(url)
@@ -129,9 +130,10 @@ func Download(manifest Manifest, downloadDir string, filen string) ([]byte, erro
 				return nil, err
 			}
 		}
-		
+
 		percent := float32(downloaded) / float32(manifest.Size) * 100.0
-        fmt.Printf("\r\033[32mDownloaded\033[0m %d/%d (\033[36m%.2f%%\033[0m) of \033[33m%s\033[0m", downloaded, manifest.Size, percent, filen)
+		downedMB := float32(downloaded) / 1024.0 / 1024.0
+		fmt.Printf("\r\033[32mDownloaded\033[0m %fMB/%fMB (\033[36m%.2f%%\033[0m) of \033[33m%s\033[0m", downedMB, totalMB, percent, filen)
 	}
 
 	// sort trackFrag by Offset
@@ -145,7 +147,7 @@ func Download(manifest Manifest, downloadDir string, filen string) ([]byte, erro
 		if frag.Offset > curPos {
 			// gap detected
 			gapSize := frag.Offset - curPos
-			if currentRem + gapSize > len(remContent) {
+			if currentRem+gapSize > len(remContent) {
 				panic("not enough remainder content to fill gap")
 			}
 			copy(ret[curPos:curPos+gapSize], remContent[currentRem:currentRem+gapSize])