#!/usr/bin/env python3
"""
Show metadata for one file.

Drag a file onto this script, or run:
    python3 view_metadata.py path/to/file/or/directory [...]

If more than one file is provided or found, only the first file is shown.
"""

from __future__ import annotations

import subprocess
import sys
from pathlib import Path

from tools.console import pause_if_interactive
from tools.exiftool import require_exiftool
from tools.filesystem import first_file_from_path


def choose_file(args: list[str]) -> Path | None:
    for arg in args:
        file_path = first_file_from_path(Path(arg))
        if file_path is not None:
            return file_path
    return None


def run(argv: list[str]) -> int:
    if len(argv) < 2:
        print("Usage: python3 view_metadata.py path/to/file/or/directory [...]")
        return 2

    try:
        exiftool = require_exiftool()
    except RuntimeError as exc:
        print(exc)
        return 1

    file_path = choose_file(argv[1:])
    if file_path is None:
        print("No file found.")
        return 1

    print(f"Showing metadata for: {file_path}\n", flush=True)
    command = [
        exiftool,
        "-a",
        "-u",
        "-ee",
        "-G0:1",
        "-s",
        "-charset",
        "filename=UTF8",
        str(file_path),
    ]
    return subprocess.run(command).returncode


def main(argv: list[str]) -> int:
    try:
        return run(argv)
    finally:
        pause_if_interactive()


if __name__ == "__main__":
    raise SystemExit(main(sys.argv))