creat script

watcher.py

@@ -0,0 +1,76 @@
+import os
+import time
+import shutil
+import hashlib
+from datetime import datetime
+from files import FILES
+
+CHECK_INTERVAL = 60  # segundos
+
+def sha256sum(path):
+    """Devuelve el hash SHA256 del fichero."""
+    h = hashlib.sha256()
+    with open(path, "rb") as f:
+        for chunk in iter(lambda: f.read(4096), b""):
+            h.update(chunk)
+    return h.hexdigest()
+
+def ensure_backup_dir(file_path):
+    """Crea backup/<nombre_sin_ext>/ si no existe."""
+    file_name = os.path.basename(file_path)
+    name, _ = os.path.splitext(file_name)
+    backup_dir = os.path.join("backup", name)
+    os.makedirs(backup_dir, exist_ok=True)
+    return backup_dir
+
+def get_latest_backup(file_path):
+    """Devuelve la ruta del backup más reciente o None si no hay."""
+    backup_dir = ensure_backup_dir(file_path)
+    files = sorted(os.listdir(backup_dir), reverse=True)
+    if not files:
+        return None
+    return os.path.join(backup_dir, files[0])
+
+def backup_file(file_path):
+    """Crea una copia con timestamp."""
+    backup_dir = ensure_backup_dir(file_path)
+    file_name = os.path.basename(file_path)
+    name, ext = os.path.splitext(file_name)
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    dest = os.path.join(backup_dir, f"{name}_{timestamp}{ext}")
+    shutil.copy2(file_path, dest)
+    print(f"[BACKUP] Copia creada: {dest}")
+
+def process_file(file_path):
+    """Comprueba si hay cambios y crea backup si es necesario."""
+    if not os.path.isfile(file_path):
+        print(f"[WARN] No existe: {file_path}")
+        return
+
+    latest = get_latest_backup(file_path)
+
+    if latest is None:
+        print(f"[INIT] No hay copia previa de {file_path}, creando primera copia...")
+        backup_file(file_path)
+        return
+
+    # Comparamos hashes
+    current_hash = sha256sum(file_path)
+    latest_hash = sha256sum(latest)
+
+    if current_hash != latest_hash:
+        print(f"[CHANGE] Detectado cambio en {file_path}, creando nueva copia...")
+        backup_file(file_path)
+    else:
+        print(f"[OK] Sin cambios en {file_path}")
+
+def main():
+    print("Iniciando watcher de saves...")
+
+    while True:
+        for f in FILES:
+            process_file(f)
+        time.sleep(CHECK_INTERVAL)
+
+if __name__ == "__main__":
+    main()