Add report generation timing stats

scripts/generate_reports.py

@@ -3,6 +3,8 @@ import sqlite3
 from pathlib import Path
 import shutil
 from typing import List, Dict, Optional
+from datetime import datetime
+import time
 
 import yaml
 
@@ -74,7 +76,9 @@ def _render_snippet(report: Dict, out_dir: Path) -> None:
     snippet_path.write_text(template.render(report=report))
 
 
-def _write_stats() -> None:
+def _write_stats(
+    generated_at: Optional[str] = None, generation_seconds: Optional[float] = None
+) -> None:
     """Query basic dataset stats and write them to ``output/global/stats.json``."""
     conn = sqlite3.connect(DB_PATH)
     cur = conn.cursor()
@@ -98,6 +102,10 @@ def _write_stats() -> None:
         "end_date": end_date,
         "unique_domains": unique_domains,
     }
+    if generated_at:
+        stats["generated_at"] = generated_at
+    if generation_seconds is not None:
+        stats["generation_seconds"] = generation_seconds
 
     out_path = OUTPUT_DIR / "global" / "stats.json"
     _save_json(out_path, stats)
@@ -197,14 +205,9 @@ def _generate_root_index() -> None:
     """Render the top-level index listing all intervals and domains."""
     _copy_icons()
     intervals = sorted(
-        [
-            name
-            for name in INTERVAL_FORMATS
-            if (OUTPUT_DIR / name).is_dir()
-        ]
+        [name for name in INTERVAL_FORMATS if (OUTPUT_DIR / name).is_dir()]
     )
 
-
     domains_dir = OUTPUT_DIR / "domains"
     domains: List[str] = []
     if domains_dir.is_dir():
@@ -227,6 +230,9 @@ def _generate_global() -> None:
         typer.echo("No report definitions found")
         return
 
+    start_time = time.time()
+    generated_at = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
+
     _copy_icons()
 
     conn = sqlite3.connect(DB_PATH)
@@ -269,7 +275,8 @@ def _generate_global() -> None:
         report_list.append(entry)
 
     _save_json(out_dir / "reports.json", report_list)
-    _write_stats()
+    elapsed = round(time.time() - start_time, 2)
+    _write_stats(generated_at, elapsed)
     typer.echo("Generated global reports")