Compute PBS retention depth

src/pve_backup_report/report_pdf.py

@@ -438,10 +438,25 @@ def retention_policy_row(policy: object) -> list[object]:
         getattr(policy, "keep_weekly", None),
         getattr(policy, "keep_monthly", None),
         getattr(policy, "keep_yearly", None),
-        getattr(policy, "max_depth", None),
+        display(retention_policy_depth(policy)),
     ]
 
 
+def retention_policy_depth(policy: object) -> int | None:
+    values = [
+        getattr(policy, "keep_last", None),
+        getattr(policy, "keep_hourly", None),
+        getattr(policy, "keep_daily", None),
+        getattr(policy, "keep_weekly", None),
+        getattr(policy, "keep_monthly", None),
+        getattr(policy, "keep_yearly", None),
+    ]
+    kept_versions = [value for value in values if isinstance(value, int)]
+    if not kept_versions:
+        return None
+    return sum(kept_versions)
+
+
 def add_backup_jobs(story: list[object], styles: dict[str, ParagraphStyle], report_data: ReportData) -> None:
     rows: list[list[object]] = [["ID", "Storage", "Horaire", "Actif", "Mode", "Selection", "Exclusion"]]
     for job in report_data.backup_jobs: