Progress bar with more info

desktop/desktop.go

@@ -9,9 +9,13 @@
 	"html"
 	"io"
 	"net/http"
+	"os"
+	"runtime"
 	"strconv"
 	"strings"
+	"syscall"
 	"time"
+	"unsafe"
 
 	"github.com/docker/go-units"
 	"github.com/docker/model-distribution/distribution"
@@ -106,6 +110,147 @@
 	}
 }
 
+func humanReadableSize(size float64) string {
+	return units.CustomSize("%.2f%s", float64(size), 1000.0, []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"})
+}
+
+func humanReadableSizePad(size float64, width int) string {
+	return fmt.Sprintf("%*s", width, humanReadableSize(size))
+}
+
+func humanReadableTimePad(seconds int64, width int) string {
+	var s string
+	if seconds < 60 {
+		s = fmt.Sprintf("%ds", seconds)
+	} else if seconds < 3600 {
+		s = fmt.Sprintf("%dm %02ds", seconds/60, seconds%60)
+	} else {
+		s = fmt.Sprintf("%dh %02dm %02ds", seconds/3600, (seconds%3600)/60, seconds%60)
+	}
+	return fmt.Sprintf("%*s", width, s)
+}
+
+// ProgressBarState tracks the running totals and timing for speed/ETA
+type ProgressBarState struct {
+	LastTime       time.Time
+	StartTime      time.Time
+	UpdateInterval time.Duration // New: interval between updates
+	LastPrint      time.Time     // New: last time the progress bar was printed
+}
+
+// fmtBar calculates the bar width and filled bar string.
+func (pbs *ProgressBarState) fmtBar(percent float64, termWidth int, prefix, suffix string) string {
+	barWidth := termWidth - len(prefix) - len(suffix) - 4
+	if barWidth < 10 {
+		barWidth = 10
+	}
+
+	filled := int(percent / 100 * float64(barWidth))
+	if filled > barWidth {
+		filled = barWidth
+	}
+
+	bar := strings.Repeat("█", filled) + strings.Repeat(" ", barWidth-filled)
+
+	return bar
+}
+
+// calcSpeed calculates the current download speed.
+func (pbs *ProgressBarState) calcSpeed(current uint64, now time.Time) float64 {
+	elapsed := now.Sub(pbs.StartTime).Seconds()
+	if elapsed <= 0 {
+		return 0
+	}
+
+	speed := float64(current) / elapsed
+	pbs.LastTime = now
+
+	return speed
+}
+
+// fmtSuffix returns the suffix string showing human readable sizes, speed, and ETA.
+func (pbs *ProgressBarState) fmtSuffix(current, total uint64, speed float64, eta int64) string {
+	return fmt.Sprintf("%s/%s  %s/s  %s",
+		humanReadableSizePad(float64(current), 10),
+		humanReadableSize(float64(total)),
+		humanReadableSizePad(speed, 10),
+		humanReadableTimePad(eta, 16),
+	)
+}
+
+// calcETA calculates the estimated time remaining.
+func (pbs *ProgressBarState) calcETA(current, total uint64, speed float64) int64 {
+	if speed <= 0 {
+		return 0
+	}
+
+	return int64(float64(total-current) / speed)
+}
+
+// fmtProgressBar returns a progress bar update string
+func (pbs *ProgressBarState) fmtProgressBar(current, total uint64) string {
+	if pbs.StartTime.IsZero() {
+		pbs.StartTime = time.Now()
+		pbs.LastTime = pbs.StartTime
+		pbs.LastPrint = pbs.StartTime
+	}
+
+	now := time.Now()
+
+	// Update display if enough time passed, or always if interval=0
+	if pbs.UpdateInterval > 0 && now.Sub(pbs.LastPrint) < pbs.UpdateInterval && current != total {
+		return ""
+	}
+
+	pbs.LastPrint = now
+	termWidth := getTerminalWidth()
+	percent := float64(current) / float64(total) * 100
+	prefix := fmt.Sprintf("%3.0f%% |", percent)
+	speed := pbs.calcSpeed(current, now)
+	eta := pbs.calcETA(current, total, speed)
+	suffix := pbs.fmtSuffix(current, total, speed, eta)
+	bar := pbs.fmtBar(percent, termWidth, prefix, suffix)
+	return fmt.Sprintf("%s%s| %s", prefix, bar, suffix)
+}
+
+func getTerminalWidthUnix() (int, error) {
+	type winsize struct {
+		Row    uint16
+		Col    uint16
+		Xpixel uint16
+		Ypixel uint16
+	}
+	ws := &winsize{}
+	retCode, _, errno := syscall.Syscall6(
+		syscall.SYS_IOCTL,
+		uintptr(os.Stdout.Fd()),
+		uintptr(syscall.TIOCGWINSZ),
+		uintptr(unsafe.Pointer(ws)),
+		0, 0, 0,
+	)
+	if int(retCode) == -1 {
+		return 0, errno
+	}
+	return int(ws.Col), nil
+}
+
+// getTerminalWidth tries to get the terminal width (default 80 if fails)
+func getTerminalWidth() int {
+	var width int
+	var err error
+	default_width := 80
+	if runtime.GOOS == "windows" { // to be implemented
+		return default_width
+	}
+
+	width, err = getTerminalWidthUnix()
+	if width == 0 || err != nil {
+		return default_width
+	}
+
+	return width
+}
+
 func (c *Client) Pull(model string, ignoreRuntimeMemoryCheck bool, progress func(string)) (string, bool, error) {
 	model = normalizeHuggingFaceModelName(model)
 	jsonData, err := json.Marshal(dmrm.ModelCreateRequest{From: model, IgnoreRuntimeMemoryCheck: ignoreRuntimeMemoryCheck})
@@ -134,6 +279,9 @@
 	layerProgress := make(map[string]uint64) // Track progress per layer ID
 
 	scanner := bufio.NewScanner(resp.Body)
+	pbs := &ProgressBarState{
+		UpdateInterval: time.Millisecond * 100,
+	}
 	for scanner.Scan() {
 		progressLine := scanner.Text()
 		if progressLine == "" {
@@ -159,8 +307,12 @@
 				current += layerCurrent
 			}
 
-			progress(fmt.Sprintf("Downloaded %s of %s", units.CustomSize("%.2f%s", float64(current), 1000.0, []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}), units.CustomSize("%.2f%s", float64(progressMsg.Total), 1000.0, []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"})))
-			progressShown = true
+			progressBar := pbs.fmtProgressBar(current, progressMsg.Total)
+			if progressBar != "" {
+				progress(progressBar)
+				progressShown = true
+			}
+
 		case "error":
 			return "", progressShown, fmt.Errorf("error pulling model: %s", progressMsg.Message)
 		case "success":