pack

#!/usr/bin/env python3
import os
import sys
import subprocess
import platform

import venv_manager

def main():
    try:
        # Path to the actual pack.py application script
        pack_py_target_script = os.path.join(venv_manager.CLIPPY_DIR, "pack.py")

        if not os.path.isfile(pack_py_target_script):
            print(f"Error: The target script '{pack_py_target_script}' was not found.", file=sys.stderr)
            sys.exit(1)

        # Ensure the virtual environment is set up and get the Python executable from it
        venv_python_executable = venv_manager.ensure_venv(
            venv_manager.CLIPPY_DIR)

        # Arguments to pass to pack.py (all arguments passed to this launcher)
        args_for_pack_py = sys.argv[1:]

        command = [venv_python_executable, pack_py_target_script] + args_for_pack_py

        # Execute pack.py using the venv's Python.
        # os.execv replaces the current process with the new one (mimics bash `exec`).
        if platform.system() == "Windows":
            # os.execv can be less straightforward on Windows for interpreted scripts.
            # subprocess.run achieves a similar outcome by waiting for the process
            # and then exiting with its return code.
            process = subprocess.run(command, check=False) # check=False to allow pack.py to control exit code
            sys.exit(process.returncode)
        else:
            os.execv(command[0], command)
            # If os.execv returns, it means an error occurred (e.g., executable not found)
            # This part is typically not reached on success.
            print(f"Error: os.execv failed to execute '{command[0]}'.", file=sys.stderr)
            sys.exit(127) # Typical exit code for command not found

    except FileNotFoundError as e:
        print(f"Error: A required file or executable was not found. {e}", file=sys.stderr)
        sys.exit(1)
    except subprocess.CalledProcessError as e:
        # This handles errors from ensure_venv if check=True leads to an exception there.
        print(f"An error occurred during setup or execution: {e}", file=sys.stderr)
        sys.exit(e.returncode if e.returncode is not None else 1)
    except Exception as e:
        print(f"An unexpected error occurred: {e}", file=sys.stderr)
        sys.exit(1)

if __name__ == "__main__":
    main()