Update main.py

main.py

@@ -115,7 +115,9 @@ def fmt_size(b: float) -> str:
     return f"{b:.1f} TB"
 
 def fmt_time(seconds: float) -> str:
-    seconds = max(0, int(seconds))
+    if seconds <= 0 or seconds != seconds:  # handle 0, negative, NaN
+        return "—"
+    seconds = int(seconds)
     if seconds < 60:
         return f"{seconds}s"
     m, s = divmod(seconds, 60)
@@ -125,9 +127,10 @@ def fmt_time(seconds: float) -> str:
     return f"{h}h {m}m"
 
 def progress_bar(current: int, total: int, length: int = 10) -> str:
-    if total <= 0:
-        return "▓" * length
-    filled = int(length * current / total)
+    if not total or total <= 0 or current <= 0:
+        return "░" * length          # empty bar instead of full when unknown
+    pct    = min(1.0, current / total)
+    filled = int(length * pct)
     empty  = length - filled
     return "▓" * filled + "░" * empty
 
@@ -135,15 +138,20 @@ def build_progress_text(phase: str, current: int, total: int,
                         speed: float, elapsed: float, filename: str) -> str:
     pct   = min(100, int(current * 100 / total)) if total > 0 else 0
     bar   = progress_bar(current, total)
-    eta   = fmt_time((total - current) / speed) if speed > 0 else "—"
+    # ETA only makes sense when we know total and have speed
+    if total > 0 and speed > 0 and current < total:
+        eta = fmt_time((total - current) / speed)
+    else:
+        eta = "—"
     icons = {"download": "📥", "upload": "📤"}
     icon  = icons.get(phase, "⚙️")
     label = "Downloading" if phase == "download" else "Saving"
+    total_str = fmt_size(total) if total > 0 else "?"
 
     return (
         f"{icon} **{label}:** `{filename}`\n\n"
         f"`{bar}` **{pct}%**\n\n"
-        f"**Done:** `{fmt_size(current)}` / `{fmt_size(total)}`\n"
+        f"**Done:** `{fmt_size(current)}` / `{total_str}`\n"
         f"**Speed:** `{fmt_size(speed)}/s`\n"
         f"**ETA:** `{eta}`\n"
         f"**Elapsed:** `{fmt_time(elapsed)}`"