from typing import Dict, Any, Optional
from datetime import datetime

class StatsFormatter:
    @staticmethod
    def _format_rating_change(rating_change: int) -> str:
        """Format rating change with colored circles"""
        if rating_change > 0:
            return f"🟢 +{rating_change}"
        elif rating_change < 0:
            return f"🔴 {rating_change}"
        else:
            return f"0"
    
    @staticmethod
    def format_stats_response(data: Dict[str, Any], username: str, period: str) -> str:
        """Format statistics response according to the template"""
        if not data or data.get('data') is None:
            message = data.get('message', 'Нет данных') if data else 'Нет данных'
            return f"📭 {message}"
        
        # Extract data from API response
        api_data = data.get('data', {})
        tasks = api_data.get('tasks', {})
        games = api_data.get('games', {})
        
        # Format date range
        date_range = StatsFormatter._get_date_range(period)
        
        # Format tasks section
        task_text = ""
        if tasks and tasks.get('total', 0) > 0:
            total_tasks = tasks.get('total', 0)
            solved = tasks.get('solved', 0)
            unsolved = tasks.get('unsolved', 0)
            task_text = f"🧩 Задачи: {total_tasks} (✅ {solved} - ❌ {unsolved})\n\n"
        
        # Format games section
        games_text = ""
        if games:
            for game_type, game_data in games.items():
                if not game_data or game_data.get('games_played', 0) == 0:
                    continue
                    
                # Get game type emoji
                emoji = StatsFormatter._get_game_type_emoji(game_type)
                
                games_count = game_data.get('games_played', 0)
                rating_change = game_data.get('rating_change', 0)
                rating = game_data.get('final_rating', 0)
                wins = game_data.get('wins', 0)
                losses = game_data.get('losses', 0)
                draws = game_data.get('draws', 0)
                
                # Format rating change
                rating_change_str = StatsFormatter._format_rating_change(rating_change)
                
                games_text += f"{emoji} {game_type.title()} — {games_count} игр • {rating_change_str}\n"
                games_text += f"Рейтинг: {rating}\n"
                games_text += f"✅ Победы: {wins}\n"
                games_text += f"❌ Поражения: {losses}\n"
                games_text += f"🤝 Ничьи: {draws}\n\n"
        
        # Combine all parts
        result = f"📊 Статистика {username} • {date_range}\n\n"
        result += task_text
        result += games_text.rstrip()
        
        return result
    
    @staticmethod
    def _get_date_range(period: str) -> str:
        """Get date range string for the period"""
        from datetime import datetime, timedelta
        
        today = datetime.now()
        
        if period == "today":
            return today.strftime("%d.%m.%Y")
        elif period == "yesterday":
            yesterday = today - timedelta(days=1)
            return yesterday.strftime("%d.%m.%Y")
        elif period == "week":
            week_ago = today - timedelta(days=7)
            return f"{week_ago.strftime('%d.%m.%Y')}–{today.strftime('%d.%m.%Y')}"
        else:
            return today.strftime("%d.%m.%Y")
    
    @staticmethod
    def _get_game_type_emoji(game_type: str) -> str:
        """Get emoji for game type"""
        emoji_map = {
            'bullet': '⚡️',
            'blitz': '🔥',
            'rapid': '🐇',
            'classical': '♟️',
            'correspondence': '📮'
        }
        return emoji_map.get(game_type.lower(), '🎯')
    
    @staticmethod
    def format_period_notification(username: str, games_data: Optional[Dict], puzzles_data: Optional[Dict], period_minutes: int) -> str:
        """Format notification for periodic checks"""
        from datetime import datetime
        
        # Format period text
        if period_minutes == 1:
            period_text = "за 1 минуту"
        elif period_minutes in [2, 3, 4]:
            period_text = f"за {period_minutes} минуты"
        else:
            period_text = f"за {period_minutes} минут"
        
        result = f"📊 Статистика {username} • {period_text}\n\n"
        
        # Format puzzles first (if available and there's actual activity)
        if puzzles_data and puzzles_data.get('data'):
            puzzles_info = puzzles_data['data']
            total_puzzles = puzzles_info.get('total_attempts', 0)
            solved = puzzles_info.get('solved', 0)
            failed = puzzles_info.get('failed', 0)
            
            # Only show tasks section if there's actual activity (not all zeros)
            if total_puzzles > 0 or solved > 0 or failed > 0:
                result += f"🧩 Задачи: {total_puzzles} (✅ {solved} - ❌ {failed})\n\n"
        
        # Format games
        if games_data and games_data.get('data'):
            games_info = games_data['data']
            total_games = games_info.get('total', {}).get('games_played', 0)
            
            # Show details for each game type if there were games
            if total_games > 0:
                for game_type, game_data in games_info.items():
                    if game_type != 'total' and game_data and game_data.get('games_played', 0) > 0:
                        emoji = StatsFormatter._get_game_type_emoji(game_type)
                        games_count = game_data.get('games_played', 0)
                        rating_change = game_data.get('rating_change', 0)
                        rating = game_data.get('rating', 0)
                        wins = game_data.get('wins', 0)
                        losses = game_data.get('losses', 0)
                        draws = game_data.get('draws', 0)
                        
                        rating_change_str = StatsFormatter._format_rating_change(rating_change)
                        result += f"{emoji} {game_type.title()} — {games_count} игр • {rating_change_str}\n"
                        result += f"Рейтинг: {rating}\n"
                        result += f"✅ Победы: {wins}\n"
                        result += f"❌ Поражения: {losses}\n"
                        result += f"🤝 Ничьи: {draws}\n\n"
        
        # If no activity
        if not (games_data and games_data.get('data')) and not (puzzles_data and puzzles_data.get('data')):
            result += "📭 Нет активности за этот период"
        
        return result.rstrip()