"""
Utility functions for TV_APP
Helper functions for translations, device detection, and common calculations
"""

import json
import os
import re
from flask import request, session

DEFAULT_LANGUAGE = 'sl'


def load_translations(language='sl'):
    """Load translations for the specified language"""
    try:
        locale_file = os.path.join('locales', f'{language}.json')
        if os.path.exists(locale_file):
            with open(locale_file, 'r', encoding='utf-8') as f:
                return json.load(f)
    except Exception as e:
        print(f"Error loading translations for {language}: {e}")

    # Fallback to default language
    try:
        default_file = os.path.join('locales', f'{DEFAULT_LANGUAGE}.json')
        with open(default_file, 'r', encoding='utf-8') as f:
            return json.load(f)
    except Exception as e:
        print(f"Error loading default translations: {e}")
        return {}


def get_current_language():
    """Get current language from session or default"""
    return session.get('language', DEFAULT_LANGUAGE)


def get_translations():
    """Get translations for current language"""
    return load_translations(get_current_language())


def is_mobile_device():
    """Check if the request is coming from a mobile device"""
    user_agent = request.headers.get('User-Agent', '').lower()
    mobile_patterns = [
        r'android', r'iphone', r'ipad', r'ipod', r'blackberry',
        r'iemobile', r'opera mini', r'mobile', r'tablet'
    ]
    return any(re.search(pattern, user_agent) for pattern in mobile_patterns)


def calculate_tens_from_targets(targets):
    """Calculate the number of 10s from a targets dictionary"""
    tens_count = 0
    if not targets:
        return 0

    for target in targets.values():
        if isinstance(target, dict):
            for shot_key, shot_value in target.items():
                if shot_key.startswith('shot') and shot_value == 10:
                    tens_count += 1

    return tens_count


def validate_player_data(player_data):
    """Validate player data structure"""
    required_fields = ['id', 'name', 'enabled']
    return all(field in player_data for field in required_fields)


def validate_settings(settings):
    """Validate settings structure"""
    required_sections = ['camera_titles', 'display_options']
    return all(section in settings for section in required_sections)