#!/usr/bin/env python3
"""
Translation management script for yt-local

Usage:
    python manage_translations.py extract  # Extract strings to messages.pot
    python manage_translations.py init es  # Initialize Spanish translation
    python manage_translations.py update   # Update all translations
    python manage_translations.py compile  # Compile translations to .mo files
"""
import sys
import os
import subprocess

# Ensure we use the Python from the virtual environment if available
if hasattr(sys, 'real_prefix') or (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix):
    # Already in venv
    pass
else:
    # Try to activate venv
    venv_path = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), 'venv')
    if os.path.exists(venv_path):
        venv_bin = os.path.join(venv_path, 'bin')
        if os.path.exists(venv_bin):
            os.environ['PATH'] = venv_bin + os.pathsep + os.environ['PATH']


def run_command(cmd):
    """Run a shell command and print output"""
    print(f"Running: {' '.join(cmd)}")
    # Use the pybabel from the same directory as our Python executable
    if cmd[0] == 'pybabel':
        import os
        pybabel_path = os.path.join(os.path.dirname(sys.executable), 'pybabel')
        if os.path.exists(pybabel_path):
            cmd = [pybabel_path] + cmd[1:]
    result = subprocess.run(cmd, capture_output=True, text=True)
    if result.stdout:
        print(result.stdout)
    if result.stderr:
        print(result.stderr, file=sys.stderr)
    return result.returncode


def extract():
    """Extract translatable strings from source code"""
    print("Extracting translatable strings...")
    return run_command([
        'pybabel', 'extract',
        '-F', 'babel.cfg',
        '-k', 'lazy_gettext',
        '-k', '_l',
        '-o', 'translations/messages.pot',
        '.'
    ])


def init(language):
    """Initialize a new language translation"""
    print(f"Initializing {language} translation...")
    return run_command([
        'pybabel', 'init',
        '-i', 'translations/messages.pot',
        '-d', 'translations',
        '-l', language
    ])


def update():
    """Update existing translations with new strings"""
    print("Updating translations...")
    return run_command([
        'pybabel', 'update',
        '-i', 'translations/messages.pot',
        '-d', 'translations'
    ])


def compile_translations():
    """Compile .po files to .mo files"""
    print("Compiling translations...")
    return run_command([
        'pybabel', 'compile',
        '-d', 'translations'
    ])


def main():
    if len(sys.argv) < 2:
        print(__doc__)
        sys.exit(1)

    command = sys.argv[1]

    if command == 'extract':
        sys.exit(extract())
    elif command == 'init':
        if len(sys.argv) < 3:
            print("Error: Please specify a language code (e.g., es, fr, de)")
            sys.exit(1)
        sys.exit(init(sys.argv[2]))
    elif command == 'update':
        sys.exit(update())
    elif command == 'compile':
        sys.exit(compile_translations())
    else:
        print(f"Unknown command: {command}")
        print(__doc__)
        sys.exit(1)


if __name__ == '__main__':
    main()