import sys, shutil, argparse
from pathlib import Path
from datetime import datetime

APP_PATH = Path.home() / "Fenix" / "ltx_service.py"
ANCHOR = "                    shutil.copy(ruta, destino)\n                    mat = destino"
REPLACEMENT = """                    shutil.copy(ruta, destino)

                    # --- PARCHE: normalizar clip a H.264 + yuv420p ---
                    import subprocess
                    destino_norm = destino.replace(".mp4", "_norm.mp4")
                    cmd = [
                        "ffmpeg", "-y", "-i", destino,
                        "-c:v", "libx264",
                        "-pix_fmt", "yuv420p",
                        "-r", "24",
                        "-vf", "scale=trunc(iw/2)*2:trunc(ih/2)*2",
                        "-movflags", "+faststart",
                        destino_norm
                    ]
                    r = subprocess.run(cmd, capture_output=True, text=True)
                    norm_path = Path(destino_norm)
                    if r.returncode != 0 or not norm_path.exists() or norm_path.stat().st_size < 10_240:
                        print(f"[LTX] ERROR normalizando {destino}:\\n{r.stderr}", flush=True)
                        raise RuntimeError(f"Clip normalizado invalido: {destino_norm}")
                    print(f"[LTX] Normalizado OK: {destino_norm} ({norm_path.stat().st_size // 1024} KB)", flush=True)
                    destino = destino_norm
                    # --- FIN PARCHE ---

                    mat = destino"""

parser = argparse.ArgumentParser()
parser.add_argument("--dry-run", action="store_true")
args = parser.parse_args()

original = APP_PATH.read_text(encoding="utf-8")

if ANCHOR not in original:
    print("[ERROR] Anclaje no encontrado.")
    sys.exit(1)

if "PARCHE: normalizar clip" in original:
    print("[INFO] Parche ya aplicado.")
    sys.exit(0)

patched = original.replace(ANCHOR, REPLACEMENT, 1)

if args.dry_run:
    print("[DRY RUN] Anclaje encontrado. Listo para aplicar.")
    sys.exit(0)

backup = Path(str(APP_PATH) + datetime.now().strftime(".bak_%Y%m%d_%H%M%S"))
shutil.copy2(APP_PATH, backup)
print(f"[OK] Backup: {backup}")
APP_PATH.write_text(patched, encoding="utf-8")
print("[OK] Parche aplicado. Ahora: git add ltx_service.py && git commit -m 'fix: normalizar clips LTX' && git push")