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