(Init): Added shit

nirimod/backup.py

@@ -0,0 +1,45 @@
+"""Automatic config backup management."""
+
+import re
+import shutil
+from datetime import datetime
+from pathlib import Path
+
+from nirimod import kdl_parser
+
+def backup_all_sources(source_files: set[Path], limit: int = 10) -> Path | None:
+    if not source_files:
+        return None
+
+    kdl_parser.BACKUP_DIR.mkdir(parents=True, exist_ok=True)
+
+    existing_gens = []
+    for p in kdl_parser.BACKUP_DIR.iterdir():
+        if p.is_dir():
+            m = re.match(r"^(?:\(Gen|v|gen)(\d+)", p.name, re.IGNORECASE)
+            if m:
+                existing_gens.append(int(m.group(1)))
+    next_gen = max(existing_gens) + 1 if existing_gens else 1
+
+    ts = datetime.now().strftime("%Y-%m-%d_%H-%M")
+    dest_dir = kdl_parser.BACKUP_DIR / f"(Gen{next_gen}){ts}"
+    dest_dir.mkdir(parents=True, exist_ok=True)
+
+    for src in sorted(source_files):
+        if not src.exists():
+            continue
+        try:
+            rel = src.relative_to(kdl_parser.NIRI_CONFIG.parent)
+            dest = dest_dir / rel
+            dest.parent.mkdir(parents=True, exist_ok=True)
+            shutil.copy2(src, dest)
+        except ValueError:
+            shutil.copy2(src, dest_dir / src.name)
+
+    if limit > 0:
+        backups = sorted([p for p in kdl_parser.BACKUP_DIR.iterdir() if p.is_dir()], key=lambda p: p.stat().st_mtime)
+        while len(backups) > limit:
+            oldest = backups.pop(0)
+            shutil.rmtree(oldest)
+
+    return dest_dir