import sys
from pathlib import Path
from datetime import date


def lire_version(path: Path):
    if not path.exists():
        return [1, 0, 0]

    contenu = path.read_text(encoding="utf-8").strip().splitlines()
    if not contenu:
        return [1, 0, 0]

    version_str = contenu[0].strip()
    try:
        parts = [int(x) for x in version_str.split(".")]
        while len(parts) < 3:
            parts.append(0)
        return parts[:3]
    except ValueError:
        return [1, 0, 0]


def ecrire_version(path: Path, version):
    version_str = ".".join(str(x) for x in version)
    today = date.today().isoformat()
    texte = f"{version_str}\n{today}\n"
    path.write_text(texte, encoding="utf-8")
    return version_str


def increment_patch(version):
    version[2] += 1
    return version


def main():
    if len(sys.argv) < 2:
        print("Usage : python maj_version.py chemin_du_VERSION.txt")
        sys.exit(1)

    version_file = Path(sys.argv[1])
    version = lire_version(version_file)
    version = increment_patch(version)
    new_version_str = ecrire_version(version_file, version)
    print(f"Nouvelle version : {new_version_str}")


if __name__ == "__main__":
    main()