# ==============================================================================
# Formeleon - Multi-tenant Form Generator
# Author: Björn Runden <br@runden.net>
# Module: utils/i18n.py
# Description: Internationalization setup using Flask-Babel.
# ==============================================================================

from flask import request, current_app
from flask_babel import Babel

# Initialize Babel
babel = Babel()

def get_locale():
    """
    Selects the best matching language for the user.
    """
    # Force language via query parameter (e.g. ?lang=de)
    lang_param = request.args.get('lang')
    if lang_param and lang_param in current_app.config.get('LANGUAGES', ['en']):
        return lang_param
        
    # Accept-Language header from browser
    return request.accept_languages.best_match(current_app.config.get('LANGUAGES', ['en']))

def get_timezone():
    """
    Returns the user's timezone if available, fallback to default.
    """
    # For now, default to UTC. Can be extended to read from user session.
    return current_app.config.get('BABEL_DEFAULT_TIMEZONE', 'UTC')