Initial commit

backend/utils.py

@@ -0,0 +1,26 @@
+from datetime import datetime, timezone
+
+def format_size(bytes_size):
+    """Convertit une taille en octets en format lisible (Ko, Mo, Go, ...)."""
+    for unit in ['o', 'Ko', 'Mo', 'Go', 'To']:
+        if bytes_size < 1024:
+            return f"{bytes_size:.2f} {unit}"
+        bytes_size /= 1024
+    return f"{bytes_size:.2f} Po"
+
+def calculate_age(uploaded_at_iso):
+    uploaded_date = datetime.fromisoformat(uploaded_at_iso.rstrip('Z')).replace(tzinfo=timezone.utc)
+    now = datetime.now(timezone.utc)
+    delta_days = (now.date() - uploaded_date.date()).days
+
+    # human
+    if delta_days < 30:
+        age_human = f"{delta_days} j"
+    elif delta_days < 365:
+        months = delta_days // 30
+        age_human = f"{months} mois"
+    else:
+        years = delta_days // 365
+        age_human = f"{years} ans"
+
+    return delta_days, age_human