import discord
from discord.ext import commands
import os
import asyncio
import logging
from dotenv import load_dotenv
import aiomysql
import json
from datetime import datetime
from typing import Optional, List, Dict

# Load environment variables
load_dotenv()

# Configure logging
logging.basicConfig(level=logging.INFO)

# Database configuration
DATABASE_URL = os.getenv('DATABASE_URL')
DB_HOST = os.getenv('DB_HOST')
DB_PORT = os.getenv('DB_PORT', '5432')  # Default to PostgreSQL port
DB_NAME = os.getenv('DB_NAME')
DB_USER = os.getenv('DB_USER')
DB_PASSWORD = os.getenv('DB_PASSWORD')

# Build DATABASE_URL from individual components if not provided
if not DATABASE_URL and all([DB_HOST, DB_NAME, DB_USER, DB_PASSWORD]):
    DATABASE_URL = f"mysql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}"
    print(f"📝 Built DATABASE_URL from individual environment variables")

# Parse MySQL connection details from DATABASE_URL
def parse_database_url(url):
    """Parse MySQL connection URL into components"""
    if not url:
        return None
    
    # Remove mysql:// prefix
    if url.startswith('mysql://'):
        url = url[8:]
    
    # Split user:pass@host:port/db
    if '@' in url:
        auth, host_db = url.split('@', 1)
        if ':' in auth:
            user, password = auth.split(':', 1)
        else:
            user, password = auth, ''
    else:
        return None
    
    if '/' in host_db:
        host_port, database = host_db.split('/', 1)
    else:
        return None
    
    if ':' in host_port:
        host, port = host_port.split(':', 1)
        try:
            port = int(port)
        except ValueError:
            port = 3306
    else:
        host, port = host_port, 3306
    
    return {
        'host': host,
        'port': port,
        'user': user,
        'password': password,
        'db': database
    }

# Global database connection pool
db_pool = None

# Bot configuration
intents = discord.Intents.default()
intents.message_content = True
intents.guilds = True
intents.members = True

bot = commands.Bot(command_prefix='!', intents=intents)

@bot.event
async def on_ready():
    """Event triggered when the bot is ready"""
    print(f'{bot.user} is online and ready!')
    print(f'Bot ID: {bot.user.id}')
    print(f'Discord.py Version: {discord.__version__}')
    print('------')
    
    # Initialize database
    await init_database()
    
    # Set bot status
    await bot.change_presence(
        activity=discord.Game(name="Hearts of Iron IV ELO"),
        status=discord.Status.online
    )
    
    # Sync hybrid commands on startup
    try:
        synced = await bot.tree.sync()
        print(f'Synced {len(synced)} hybrid commands')
    except Exception as e:
        print(f'Failed to sync commands: {e}')

@bot.event
async def on_guild_join(guild):
    """Event triggered when the bot joins a server"""
    print(f'Bot joined server "{guild.name}" (ID: {guild.id})')

@bot.event
async def on_guild_remove(guild):
    """Event triggered when the bot leaves a server"""
    print(f'Bot left server "{guild.name}" (ID: {guild.id})')

# Owner Configuration
OWNER_ID = 253922739709018114

# ELO Configuration
STARTING_ELO = 800
K_FACTOR = 32
T_LEVEL_MULTIPLIERS = {
    1: 0.8,  # T1 countries get less points
    2: 1.0,  # T2 countries get normal points
    3: 1.2   # T3 countries get more points
}

# Preferred team emoji overrides (will be used if no guild/file match is found)
TEAM_EMOTE_OVERRIDES: Dict[str, str] = {
    "axis": "<:fascism:1432391685127536762>",
    "allies": "<:democracy:1432391686612586528>",
    "comintern": "<:communism:1432391682267025479>",
    "cuf": "<:ChineseUnitedFront:1432422469985112156>",
    "default": "<:neutrality:1432391681059197102>",
}

# Emoji and formatting helpers
def _all_accessible_emojis(ctx: commands.Context) -> List[discord.Emoji]:
    """Return emojis from current guild plus all guilds the bot is in."""
    try:
        guild_emojis = list(ctx.guild.emojis) if ctx.guild else []
    except Exception:
        guild_emojis = []
    try:
        bot_emojis = list(bot.emojis)
    except Exception:
        bot_emojis = []
    return guild_emojis + bot_emojis

def find_custom_emoji(ctx: commands.Context, keyword_variants: List[str]) -> Optional[str]:
    """Try to find a custom emoji by a list of keyword variants (case-insensitive). Returns str(emoji) or None."""
    emojis = _all_accessible_emojis(ctx)
    for kw in keyword_variants:
        kw = kw.lower()
        for e in emojis:
            try:
                if kw in (e.name or '').lower():
                    return str(e)
            except Exception:
                continue
    # Fallback to markdown-defined emojis if available
    try:
        if EMOTE_MAP:
            for kw in keyword_variants:
                key = kw.lower()
                # Exact name match
                if key in EMOTE_MAP:
                    return EMOTE_MAP[key]
                # Substring match
                for name_lower, mention in EMOTE_MAP.items():
                    if key in name_lower:
                        return mention
    except NameError:
        # EMOTE_MAP not defined yet
        pass
    return None

def get_t_emoji(ctx: commands.Context, t_level: int) -> str:
    """Return a suitable emoji for a T level, preferring custom emojis if present."""
    mapping = {
        1: ["hoi4_t1", "t1", "tier1"],
        2: ["hoi4_t2", "t2", "tier2"],
        3: ["hoi4_t3", "t3", "tier3"],
    }
    custom = find_custom_emoji(ctx, mapping.get(t_level, []))
    if custom:
        return custom
    # Fallback unicode
    return {1: "🔹", 2: "🔸", 3: "🔺"}.get(t_level, "🔹")

def get_team_emoji(ctx: commands.Context, team_name: str) -> str:
    """Return a team emoji using user's preferred overrides, with guild/file matches first."""
    name = (team_name or "").lower()

    def pick(keywords: List[str], override_key: str) -> str:
        # Try specific keywords (ideology-first), then generic ones
        custom = find_custom_emoji(ctx, keywords)
        if custom:
            return custom
        # As an extra attempt, try a couple generic HOI4 icons
        custom = find_custom_emoji(ctx, ["eagle_hoi", "peace_hoi", "navy_hoi", "secretweapon_hoi"])
        if custom:
            return custom
        # Fall back to explicit override mapping
        return TEAM_EMOTE_OVERRIDES.get(override_key, TEAM_EMOTE_OVERRIDES.get("default", "🎖️"))

    if any(k in name for k in ["axis", "achse"]):
        return pick(["fascism", "axis", "hoi4_axis"], "axis")
    if any(k in name for k in ["allies", "alliierten", "ally"]):
        return pick(["democracy", "allies", "hoi4_allies"], "allies")
    if any(k in name for k in ["comintern", "ussr", "soviet"]):
        return pick(["communism", "comintern", "hoi4_comintern"], "comintern")
    # Chinese United Front (optional special case)
    if ("chinese united front" in name) or ("chinese" in name and "front" in name) or ("cuf" in name):
        return pick(["ChineseUnitedFront", "chineseunitedfront", "cuf"], "cuf")

    # Default/other
    custom = find_custom_emoji(ctx, ["neutrality", "hoi4", "hearts_of_iron", "iron"])
    if custom:
        return custom
    return TEAM_EMOTE_OVERRIDES.get("default", "🎖️")

def _flag_from_iso2(code: str) -> Optional[str]:
    """Return unicode flag from 2-letter ISO code (e.g., 'DE' -> 🇩🇪)."""
    if not code or len(code) != 2:
        return None
    code = code.upper()
    base = 0x1F1E6
    try:
        return chr(base + ord(code[0]) - ord('A')) + chr(base + ord(code[1]) - ord('A'))
    except Exception:
        return None

# Emotes markdown loader and map
def load_emote_markdown(path: Optional[str] = None) -> Dict[str, str]:
    """Parse emotes.markdown and return a mapping of lowercased emoji names to their mention strings.
    Expected line format: <:Name:123456789012345678>
    Lines that don't match are ignored."""
    if path is None:
        base_dir = os.path.dirname(os.path.abspath(__file__))
        path = os.path.join(base_dir, 'emotes.markdown')
    mapping: Dict[str, str] = {}
    try:
        with open(path, 'r', encoding='utf-8') as f:
            for raw in f:
                line = raw.strip()
                if not line or not line.startswith('<:') or ':' not in line[2:]:
                    continue
                # Format is <:NAME:ID>
                try:
                    inner = line[2:-1] if line.endswith('>') else line[2:]
                    name, emoji_id = inner.split(':', 1)
                    name = name.strip()
                    mention = f"<:{name}:{emoji_id.strip('>')}>"
                    mapping[name.lower()] = mention
                except Exception:
                    continue
    except FileNotFoundError:
        # Silent if not present
        pass
    except Exception as e:
        print(f"⚠️ Failed to load emotes.markdown: {e}")
    return mapping

# Load emotes mapping at import
EMOTE_MAP: Dict[str, str] = load_emote_markdown()
if EMOTE_MAP:
    print(f"😀 Loaded {len(EMOTE_MAP)} custom emojis from emotes.markdown")

def load_country_tags(path: Optional[str] = None) -> Dict[str, str]:
    """Load HOI4 country tags mapping from tags.txt.
    Supported formats per line:
      TAG=Country Name | TAG:Country Name | TAG,Country Name | TAG Country Name
    Lines starting with # are ignored.
    Returns dict like { 'GER': 'Germany', ... }"""
    if path is None:
        base_dir = os.path.dirname(os.path.abspath(__file__))
        path = os.path.join(base_dir, 'tags.txt')
    mapping: Dict[str, str] = {}
    try:
        with open(path, 'r', encoding='utf-8') as f:
            for raw in f:
                line = raw.strip()
                if not line or line.startswith('#'):
                    continue
                tag = None
                name = None
                for sep in ['=', ';', ',', ':']:
                    if sep in line:
                        left, right = line.split(sep, 1)
                        tag = left.strip().upper()
                        name = right.strip()
                        break
                if tag is None:
                    parts = line.split(None, 1)
                    if len(parts) == 2:
                        tag = parts[0].strip().upper()
                        name = parts[1].strip()
                    else:
                        tag = line.strip().upper()
                        name = line.strip()
                if tag and name:
                    mapping[tag] = name
    except FileNotFoundError:
        print("ℹ️ tags.txt not found; proceeding without country tag labels")
    except Exception as e:
        print(f"⚠️ Failed to load tags.txt: {e}")
    return mapping

# Loaded at import
COUNTRY_TAGS: Dict[str, str] = load_country_tags()
if COUNTRY_TAGS:
    print(f"🗺️ Loaded {len(COUNTRY_TAGS)} HOI4 country tags")

def get_country_label(country_tag: Optional[str]) -> Optional[str]:
    """Return a display label like "[GER] Germany" if known, or "[GER]" if unknown."""
    if not country_tag:
        return None
    tag = country_tag.strip().upper()
    name = COUNTRY_TAGS.get(tag)
    return f"[{tag}] {name}" if name else f"[{tag}]"

def get_country_emoji(ctx: commands.Context, country: Optional[str]) -> str:
    """Prefer custom emoji matching the HOI4 tag (e.g., ger, hoi4_ger). If parameter is ISO2, show unicode flag. Else empty."""
    if not country:
        return ""
    c = country.strip()
    # Try custom emoji lookups using tag variants
    variants = [c, c.lower(), f"hoi4_{c.lower()}", f"country_{c.lower()}"]
    custom = find_custom_emoji(ctx, variants)
    if custom:
        return custom
    # If user passed ISO2, render unicode flag
    if len(c) == 2:
        flag = _flag_from_iso2(c)
        if flag:
            return flag
    # Otherwise, no emoji fallback to avoid noisy globes
    return ""

# Database Functions
# Database Functions
async def init_database():
    """Initialize database connection and create tables"""
    global db_pool
    try:
        # Parse DATABASE_URL for MySQL connection
        db_config = parse_database_url(DATABASE_URL)
        if not db_config:
            raise ValueError("Invalid DATABASE_URL format")
        
        print(f"🔌 Connecting to MySQL: {db_config['host']}:{db_config['port']}/{db_config['db']}")
        
        # Create MySQL connection pool
        db_pool = await aiomysql.create_pool(
            host=db_config['host'],
            port=db_config['port'],
            user=db_config['user'],
            password=db_config['password'],
            db=db_config['db'],
            charset='utf8mb4',
            autocommit=True,
            maxsize=10
        )
        
        async with db_pool.acquire() as conn:
            async with conn.cursor() as cursor:
                # Create players table (MySQL syntax)
                await cursor.execute('''
                    CREATE TABLE IF NOT EXISTS players (
                        id INT AUTO_INCREMENT PRIMARY KEY,
                        discord_id BIGINT UNIQUE NOT NULL,
                        username VARCHAR(255) NOT NULL,
                        standard_elo INT DEFAULT 800,
                        competitive_elo INT DEFAULT 800,
                        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                        updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
                    )
                ''')
                
                # Create games table (MySQL syntax)
                await cursor.execute('''
                    CREATE TABLE IF NOT EXISTS games (
                        id INT AUTO_INCREMENT PRIMARY KEY,
                        game_name VARCHAR(255) NOT NULL,
                        game_type VARCHAR(50) NOT NULL,
                        status VARCHAR(50) DEFAULT 'setup',
                        players JSON NOT NULL,
                        winner_team VARCHAR(255),
                        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                        finished_at TIMESTAMP NULL
                    )
                ''')
                
                # Create game_results table (MySQL syntax)
                await cursor.execute('''
                    CREATE TABLE IF NOT EXISTS game_results (
                        id INT AUTO_INCREMENT PRIMARY KEY,
                        game_id INT,
                        discord_id BIGINT NOT NULL,
                        team_name VARCHAR(255) NOT NULL,
                        t_level INT NOT NULL,
                        old_elo INT NOT NULL,
                        new_elo INT NOT NULL,
                        elo_change INT NOT NULL,
                        won BOOLEAN NOT NULL,
                        result_type VARCHAR(10) DEFAULT 'loss',
                        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                        FOREIGN KEY (game_id) REFERENCES games(id)
                    )
                ''')
                
                # Add result_type column if it doesn't exist (for existing databases)
                try:
                    await cursor.execute('''
                        ALTER TABLE game_results 
                        ADD COLUMN result_type VARCHAR(10) DEFAULT 'loss'
                    ''')
                except:
                    # Column already exists, ignore error
                    pass
                
        print("✅ Database initialized successfully")
        
    except Exception as e:
        print(f"❌ Database initialization failed: {e}")
        import traceback
        traceback.print_exc()

async def get_or_create_player(discord_id: int, username: str) -> Dict:
    """Get or create a player in the database"""
    async with db_pool.acquire() as conn:
        async with conn.cursor(aiomysql.DictCursor) as cursor:
            # Try to get existing player
            await cursor.execute(
                "SELECT * FROM players WHERE discord_id = %s", (discord_id,)
            )
            player = await cursor.fetchone()
            
            if not player:
                # Create new player
                await cursor.execute(
                    "INSERT INTO players (discord_id, username) VALUES (%s, %s)",
                    (discord_id, username)
                )
                await cursor.execute(
                    "SELECT * FROM players WHERE discord_id = %s", (discord_id,)
                )
                player = await cursor.fetchone()
            else:
                # Update username if changed
                await cursor.execute(
                    "UPDATE players SET username = %s, updated_at = CURRENT_TIMESTAMP WHERE discord_id = %s",
                    (username, discord_id)
                )
                
            return dict(player)

def calculate_elo_change(player_elo: int, opponent_avg_elo: int, result: str, t_level: int) -> int:
    """Calculate ELO change using standard ELO formula with T-level multiplier
    result can be 'win', 'loss', or 'draw'
    
    In draws:
    - If you're expected to win (higher ELO), you lose points for drawing
    - If you're expected to lose (lower ELO), you gain points for drawing
    - The bigger the ELO difference, the bigger the swing
    """
    expected_score = 1 / (1 + 10 ** ((opponent_avg_elo - player_elo) / 400))
    
    if result == 'win':
        actual_score = 1.0
    elif result == 'draw':
        actual_score = 0.5  # Draw = 50% score
    else:  # loss
        actual_score = 0.0
    
    # Calculate the base ELO change
    base_change = K_FACTOR * (actual_score - expected_score)
    
    # Apply T-level multiplier
    t_multiplier = T_LEVEL_MULTIPLIERS.get(t_level, 1.0)
    
    final_change = base_change * t_multiplier
    
    # For debugging/logging purposes, let's see what happens in draws
    if result == 'draw':
        elo_diff = player_elo - opponent_avg_elo
        expected_percentage = expected_score * 100
        print(f"📊 Draw calculation: Player ELO {player_elo} vs Opponent Avg {opponent_avg_elo}")
        print(f"   ELO Difference: {elo_diff:+d} | Expected win chance: {expected_percentage:.1f}%")
        print(f"   ELO change: {final_change:+.1f} (T{t_level} multiplier: {t_multiplier})")
    
    return round(final_change)

# Owner only decorator
def is_owner():
    def predicate(ctx):
        return ctx.author.id == OWNER_ID
    return commands.check(predicate)

# Owner Commands
@bot.hybrid_command(name='reload', description='Reloads the bot and syncs slash commands (Owner only)')
@is_owner()
async def reload_bot(ctx):
    """Reloads the bot and syncs slash commands (Owner only)"""
    try:
        print(f"🔄 Reload command started by {ctx.author} (ID: {ctx.author.id})")
        
        # Send initial message
        embed = discord.Embed(
            title="🔄 Bot Reload",
            description="Reloading bot and syncing commands...",
            color=discord.Color.yellow()
        )
        message = await ctx.send(embed=embed)
        print("📤 Initial reload message sent")
        
        # Sync slash commands
        print("🔄 Starting command sync...")
        synced = await bot.tree.sync()
        print(f"✅ Synced {len(synced)} commands successfully")
        
        # Update embed with success
        embed = discord.Embed(
            title="✅ Bot Reloaded Successfully",
            description=f"Bot has been reloaded!\nSynced {len(synced)} slash commands.",
            color=discord.Color.green()
        )
        embed.add_field(name="Servers", value=len(bot.guilds), inline=True)
        embed.add_field(name="Latency", value=f"{round(bot.latency * 1000)}ms", inline=True)
        embed.set_footer(text=f"Reloaded by {ctx.author}", icon_url=ctx.author.avatar.url if ctx.author.avatar else None)
        
        await message.edit(embed=embed)
        print("✅ Reload completed successfully")
        
    except Exception as e:
        print(f"❌ Reload failed with error: {type(e).__name__}: {e}")
        import traceback
        traceback.print_exc()
        
        embed = discord.Embed(
            title="❌ Reload Failed",
            description=f"**Error Type:** {type(e).__name__}\n**Error:** {str(e)[:1500]}",
            color=discord.Color.red()
        )
        await ctx.send(embed=embed)

# HOI4 ELO Commands
@bot.hybrid_command(name='hoi4create', description='Create a new HOI4 game')
async def hoi4create(ctx, game_type: str, game_name: str):
    """Create a new HOI4 game"""
    if game_type.lower() not in ['standard', 'competitive']:
        await ctx.send("❌ Game type must be either 'standard' or 'competitive'")
        return
    
    try:
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                # Check if game name already exists and is active
                await cursor.execute(
                    "SELECT * FROM games WHERE game_name = %s AND status = 'setup'",
                    (game_name,)
                )
                existing_game = await cursor.fetchone()
                
                if existing_game:
                    await ctx.send(f"❌ A game with name '{game_name}' is already in setup phase!")
                    return
                
                # Create new game
                await cursor.execute(
                    "INSERT INTO games (game_name, game_type, status, players) VALUES (%s, %s, 'setup', %s)",
                    (game_name, game_type.lower(), '[]')
                )
            
        embed = discord.Embed(
            title="🎮 Game Created",
            description=f"HOI4 {game_type.title()} game '{game_name}' has been created!",
            color=discord.Color.green()
        )
        embed.add_field(name="Game Name", value=game_name, inline=True)
        embed.add_field(name="Type", value=game_type.title(), inline=True)
        embed.add_field(name="Status", value="Setup Phase", inline=True)
        embed.set_footer(text="Use /hoi4setup to add players to this game")
        
        await ctx.send(embed=embed)
        
    except Exception as e:
        await ctx.send(f"❌ Error creating game: {str(e)}")

@bot.hybrid_command(name='hoi4setup', description='Add a player to an existing game')
async def hoi4setup(ctx, game_name: str, user: discord.Member, team_name: str, t_level: int, country: Optional[str] = None):
    """Add a player to an existing game"""
    if t_level not in [1, 2, 3]:
        await ctx.send("❌ T-Level must be 1, 2, or 3")
        return
    
    try:
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                # Get the game
                await cursor.execute(
                    "SELECT * FROM games WHERE game_name = %s AND status = 'setup'",
                    (game_name,)
                )
                game = await cursor.fetchone()
                
                if not game:
                    await ctx.send(f"❌ No game found with name '{game_name}' in setup phase!")
                    return
                
                # Get or create player
                player = await get_or_create_player(user.id, user.display_name)
                
                # Parse existing players
                players = json.loads(game['players']) if game['players'] else []
                
                # Check if player already in game
                for p in players:
                    if p['discord_id'] == user.id:
                        await ctx.send(f"❌ {user.display_name} is already in this game!")
                        return
                
                # Add player to game
                player_data = {
                    'discord_id': user.id,
                    'username': user.display_name,
                    'team_name': team_name,
                    't_level': t_level,
                    'current_elo': player[f"{game['game_type']}_elo"],
                    'country': country.strip() if country else None
                }
                players.append(player_data)
                
                # Update game
                await cursor.execute(
                    "UPDATE games SET players = %s WHERE id = %s",
                    (json.dumps(players), game['id'])
                )
            
        embed = discord.Embed(
            title="✅ Player Added",
            description=f"{user.display_name} has been added to '{game_name}'!",
            color=discord.Color.green()
        )
        embed.add_field(name="Player", value=user.display_name, inline=True)
        embed.add_field(name="Team", value=team_name, inline=True)
        embed.add_field(name="T-Level", value=f"T{t_level}", inline=True)
        embed.add_field(name="Current ELO", value=player[f"{game['game_type']}_elo"], inline=True)
        if country:
            flag = get_country_emoji(ctx, country)
            label = get_country_label(country)
            value = f"{flag} {label}".strip()
            embed.add_field(name="Country", value=value, inline=True)
        embed.add_field(name="Players in Game", value=len(players), inline=True)
        
        await ctx.send(embed=embed)
        
    except Exception as e:
        await ctx.send(f"❌ Error adding player: {str(e)}")

@bot.hybrid_command(name='hoi4end', description='End a game and calculate ELO changes')
async def hoi4end(ctx, game_name: str, winner_team: str):
    """End a game and calculate ELO changes. Use 'draw' for ties."""
    try:
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                # Get the game
                await cursor.execute(
                    "SELECT * FROM games WHERE game_name = %s AND status = 'setup'",
                    (game_name,)
                )
                game = await cursor.fetchone()
                
                if not game:
                    await ctx.send(f"❌ No active game found with name '{game_name}'!")
                    return
                
                players = json.loads(game['players']) if game['players'] else []
                
                if len(players) < 2:
                    await ctx.send("❌ Game needs at least 2 players to end!")
                    return
                
                # Check if winner team exists or if it's a draw
                teams = {p['team_name'] for p in players}
                is_draw = winner_team.lower() == 'draw'
                
                if not is_draw and winner_team not in teams:
                    available_teams = ', '.join(teams)
                    await ctx.send(f"❌ Team '{winner_team}' not found in game! Available teams: {available_teams}, draw")
                    return
                
                # Calculate team averages
                team_elos = {}
                team_players = {}
                
                for player in players:
                    team = player['team_name']
                    if team not in team_elos:
                        team_elos[team] = []
                        team_players[team] = []
                    
                    team_elos[team].append(player['current_elo'])
                    team_players[team].append(player)
                
                # Calculate average ELOs for each team
                team_averages = {team: sum(elos) / len(elos) for team, elos in team_elos.items()}
                
                elo_changes = []
                
                # Calculate ELO changes for each player
                for player in players:
                    team = player['team_name']
                    
                    # Determine result for this player
                    if is_draw:
                        result = 'draw'
                    elif team == winner_team:
                        result = 'win'
                    else:
                        result = 'loss'
                    
                    # Calculate opponent average (average of all other teams)
                    opponent_elos = []
                    for other_team, elos in team_elos.items():
                        if other_team != team:
                            opponent_elos.extend(elos)
                    
                    opponent_avg = sum(opponent_elos) / len(opponent_elos) if opponent_elos else player['current_elo']
                    
                    elo_change = calculate_elo_change(
                        player['current_elo'],
                        opponent_avg,
                        result,
                        player['t_level']
                    )
                    
                    new_elo = max(0, player['current_elo'] + elo_change)  # Prevent negative ELO
                    
                    elo_changes.append({
                        'discord_id': player['discord_id'],
                        'username': player['username'],
                        'team_name': team,
                        't_level': player['t_level'],
                        'old_elo': player['current_elo'],
                        'new_elo': new_elo,
                        'elo_change': elo_change,
                        'result': result
                    })
                
                # Update player ELOs and save game results
                for change in elo_changes:
                    # Update player ELO
                    elo_field = f"{game['game_type']}_elo"
                    await cursor.execute(
                        f"UPDATE players SET {elo_field} = %s, updated_at = CURRENT_TIMESTAMP WHERE discord_id = %s",
                        (change['new_elo'], change['discord_id'])
                    )
                    
                    # Save game result
                    won = change['result'] == 'win'
                    await cursor.execute(
                        """INSERT INTO game_results 
                           (game_id, discord_id, team_name, t_level, old_elo, new_elo, elo_change, won, result_type)
                           VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)""",
                        (game['id'], change['discord_id'], change['team_name'], 
                         change['t_level'], change['old_elo'], change['new_elo'], 
                         change['elo_change'], won, change['result'])
                    )
                
                # Mark game as finished
                final_result = "Draw" if is_draw else winner_team
                await cursor.execute(
                    "UPDATE games SET status = 'finished', winner_team = %s, finished_at = CURRENT_TIMESTAMP WHERE id = %s",
                    (final_result, game['id'])
                )
            
        # Create result embed
        if is_draw:
            embed = discord.Embed(
                title="🤝 Game Finished!",
                description=f"Game '{game_name}' has ended!\n**Result: Draw**",
                color=discord.Color.orange()
            )
        else:
            embed = discord.Embed(
                title="🏆 Game Finished!",
                description=f"Game '{game_name}' has ended!\n**Winner: {winner_team}**",
                color=discord.Color.gold()
            )
        
        # Group results by team
        teams_results = {}
        for change in elo_changes:
            team = change['team_name']
            if team not in teams_results:
                teams_results[team] = []
            teams_results[team].append(change)
        
        for team, team_changes in teams_results.items():
            team_text = ""
            for change in team_changes:
                emoji = "📈" if change['elo_change'] > 0 else "📉" if change['elo_change'] < 0 else "➡️"
                result_emoji = ""
                if change['result'] == 'win':
                    result_emoji = "🏆"
                elif change['result'] == 'draw':
                    result_emoji = "🤝"
                else:
                    result_emoji = "💔"
                
                team_text += f"{change['username']}: {change['old_elo']} → {change['new_elo']} ({change['elo_change']:+d}) {emoji}\n"
            
            # Team header with appropriate icon
            if is_draw:
                team_header = f"🤝 Team {team}"
            elif team == winner_team:
                team_header = f"🏆 Team {team}"
            else:
                team_header = f"💔 Team {team}"
            
            embed.add_field(
                name=team_header,
                value=team_text,
                inline=False
            )
        
        embed.set_footer(text=f"Game Type: {game['game_type'].title()}")
        
        await ctx.send(embed=embed)
        
    except Exception as e:
        await ctx.send(f"❌ Error ending game: {str(e)}")

@bot.hybrid_command(name='hoi4stats', description='Show your HOI4 ELO statistics')
async def hoi4stats(ctx, user: Optional[discord.Member] = None):
    """Show HOI4 ELO statistics for a user"""
    target_user = user or ctx.author
    
    try:
        player = await get_or_create_player(target_user.id, target_user.display_name)
        
        # Get player rankings
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                # Get standard rank
                await cursor.execute(
                    "SELECT COUNT(*) + 1 as player_rank FROM players WHERE standard_elo > %s",
                    (player['standard_elo'],)
                )
                standard_rank_result = await cursor.fetchone()
                standard_rank = standard_rank_result['player_rank']
                
                # Get competitive rank
                await cursor.execute(
                    "SELECT COUNT(*) + 1 as player_rank FROM players WHERE competitive_elo > %s",
                    (player['competitive_elo'],)
                )
                competitive_rank_result = await cursor.fetchone()
                competitive_rank = competitive_rank_result['player_rank']
                
                # Get total player count
                await cursor.execute("SELECT COUNT(*) as total FROM players")
                total_players_result = await cursor.fetchone()
                total_players = total_players_result['total']
                
                # Get game statistics with proper draw detection
                await cursor.execute(
                    """SELECT 
                        COUNT(*) as total_games, 
                        SUM(CASE WHEN result_type = 'win' THEN 1 ELSE 0 END) as games_won,
                        SUM(CASE WHEN result_type = 'draw' THEN 1 ELSE 0 END) as games_drawn,
                        SUM(CASE WHEN result_type = 'loss' THEN 1 ELSE 0 END) as games_lost
                    FROM game_results WHERE discord_id = %s""",
                    (target_user.id,)
                )
                game_stats = await cursor.fetchone()
        
        total_games = game_stats['total_games'] or 0
        games_won = game_stats['games_won'] or 0
        games_drawn = game_stats['games_drawn'] or 0
        games_lost = game_stats['games_lost'] or 0
        win_rate = (games_won / total_games * 100) if total_games > 0 else 0
        
        # Create rank indicators with medals
        def get_rank_display(rank, total):
            if rank == 1:
                return f"🥇 #{rank} of {total}"
            elif rank == 2:
                return f"🥈 #{rank} of {total}"
            elif rank == 3:
                return f"🥉 #{rank} of {total}"
            else:
                return f"#{rank} of {total}"
        
        embed = discord.Embed(
            title=f"📊 HOI4 ELO Stats - {target_user.display_name}",
            color=discord.Color.blue()
        )
        
        # ELO and Rankings
        embed.add_field(
            name="🎯 Standard ELO", 
            value=f"**{player['standard_elo']}** ELO\n{get_rank_display(standard_rank, total_players)}", 
            inline=True
        )
        embed.add_field(
            name="🏆 Competitive ELO", 
            value=f"**{player['competitive_elo']}** ELO\n{get_rank_display(competitive_rank, total_players)}", 
            inline=True
        )
        embed.add_field(
            name="📅 Player Since", 
            value=player['created_at'].strftime("%m/%d/%Y"), 
            inline=True
        )
        
        # Game Statistics
        if total_games > 0:
            embed.add_field(
                name="🎮 Games Played", 
                value=f"**{total_games}** total games", 
                inline=True
            )
            
            if games_drawn > 0:
                embed.add_field(
                    name="📊 W/D/L Record", 
                    value=f"**{games_won}W** / **{games_drawn}D** / **{games_lost}L**", 
                    inline=True
                )
            else:
                embed.add_field(
                    name="📈 Win/Loss", 
                    value=f"**{games_won}W** / **{games_lost}L**", 
                    inline=True
                )
                
            embed.add_field(
                name="📊 Win Rate", 
                value=f"**{win_rate:.1f}%**", 
                inline=True
            )
        else:
            embed.add_field(
                name="🎮 Games Played", 
                value="No games played yet", 
                inline=False
            )
        
        if target_user.avatar:
            embed.set_thumbnail(url=target_user.avatar.url)
        
        # Add percentile information
        standard_percentile = ((total_players - standard_rank) / total_players * 100) if total_players > 0 else 0
        competitive_percentile = ((total_players - competitive_rank) / total_players * 100) if total_players > 0 else 0
        
        embed.set_footer(
            text=f"Standard: Top {100-standard_percentile:.1f}% | Competitive: Top {100-competitive_percentile:.1f}%"
        )
        
        await ctx.send(embed=embed)
        
    except Exception as e:
        await ctx.send(f"❌ Error getting stats: {str(e)}")

@bot.hybrid_command(name='hoi4games', description='Show active games as team showcases')
async def hoi4games(ctx):
    """Show all active games with teams presented side-by-side like a showcase."""
    try:
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                await cursor.execute(
                    "SELECT * FROM games WHERE status = 'setup' ORDER BY created_at DESC"
                )
                games = await cursor.fetchall()

        if not games:
            await ctx.send("📝 No active games found. Use `/hoi4create` to create a new game!")
            return

        embed = discord.Embed(
            title="🎮 Active HOI4 Games",
            description="Team lineups are shown side-by-side. Use /hoi4setup to add players.",
            color=discord.Color.green()
        )

        # Limit total embed fields to avoid Discord limit (25). Each game uses up to 3 fields.
        max_games = max(1, 25 // 3)
        games = games[:max_games]

        for game in games:
            players = json.loads(game['players']) if game['players'] else []

            # Build team structures
            teams: Dict[str, List[Dict]] = {}
            for p in players:
                teams.setdefault(p['team_name'], []).append(p)

            # Compute average ELO per team
            team_avgs = {t: (sum(m['current_elo'] for m in mlist) / len(mlist)) if mlist else 0 for t, mlist in teams.items()}

            # Sort teams by name to keep stable order
            ordered_teams = sorted(teams.items(), key=lambda x: x[0].lower())

            # Helper to format a team's field
            def build_team_field(team_name: str, members: List[Dict]) -> Dict[str, str]:
                t_emoji = get_team_emoji(ctx, team_name)
                avg = team_avgs.get(team_name, 0)
                name = f"{t_emoji} {team_name} (avg {avg:.0f})"
                # Each player line: T-level emoji, name, elo
                lines = []
                for m in sorted(members, key=lambda mm: (-mm.get('t_level', 2), mm['username'].lower())):
                    te = get_t_emoji(ctx, int(m.get('t_level', 2)))
                    ctry = m.get('country')
                    flag = get_country_emoji(ctx, ctry) if ctry else ""
                    label = get_country_label(ctry) if ctry else None
                    parts = [te]
                    if flag:
                        parts.append(flag)
                    if label:
                        parts.append(label)
                    parts.append(m['username'])
                    lines.append(f"{' '.join(parts)} ({m['current_elo']})")
                value = "\n".join(lines) if lines else "No players yet"
                # Discord field value max ~1024 chars; trim if necessary
                if len(value) > 1000:
                    value = value[:997] + "..."
                return {"name": name, "value": value}

            # If no teams yet, show empty placeholder for this game
            if not ordered_teams:
                embed.add_field(
                    name=f"{game['game_name']} ({game['game_type'].title()})",
                    value="No players yet",
                    inline=False
                )
                continue

            # For two teams, show A vs B with a center VS field; otherwise, list each team inline
            team_fields = [build_team_field(tn, members) for tn, members in ordered_teams]

            # Add a header field per game
            embed.add_field(
                name=f"🎯 {game['game_name']} ({game['game_type'].title()})",
                value=f"Players: {len(players)} | Teams: {len(ordered_teams)}",
                inline=False
            )

            if len(team_fields) == 1:
                f1 = team_fields[0]
                embed.add_field(name=f1["name"], value=f1["value"], inline=False)
            elif len(team_fields) >= 2:
                f1, f2 = team_fields[0], team_fields[1]
                embed.add_field(name=f1["name"], value=f1["value"], inline=True)
                embed.add_field(name="⚔️ VS ⚔️", value="\u200b", inline=True)
                embed.add_field(name=f2["name"], value=f2["value"], inline=True)
                # If more teams exist, add them below
                for extra in team_fields[2:]:
                    embed.add_field(name=extra["name"], value=extra["value"], inline=False)

        await ctx.send(embed=embed)

    except Exception as e:
        await ctx.send(f"❌ Error getting games: {str(e)}")

@bot.hybrid_command(name='hoi4history', description='Show past games with optional filters')
async def hoi4history(ctx, limit: Optional[int] = 10, player: Optional[discord.Member] = None, game_name: Optional[str] = None, game_type: Optional[str] = None):
    """Show past games with optional filters"""
    if limit > 50:
        limit = 50  # Prevent too many results
    
    try:
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                # Build dynamic query based on filters
                query = "SELECT * FROM games WHERE status = 'finished'"
                params = []
                
                if game_name:
                    query += " AND game_name LIKE %s"
                    params.append(f"%{game_name}%")
                
                if game_type and game_type.lower() in ['standard', 'competitive']:
                    query += " AND game_type = %s"
                    params.append(game_type.lower())
                
                if player:
                    query += " AND JSON_CONTAINS(players, JSON_OBJECT('discord_id', %s))"
                    params.append(player.id)
                
                query += " ORDER BY finished_at DESC LIMIT %s"
                params.append(limit)
                
                await cursor.execute(query, params)
                games = await cursor.fetchall()
        
        if not games:
            await ctx.send("📝 No finished games found with the specified filters!")
            return
        
        embed = discord.Embed(
            title="📚 HOI4 Game History",
            color=discord.Color.blue()
        )
        
        if player:
            embed.description = f"Filtered by player: {player.display_name}"
        if game_name:
            embed.description = f"Filtered by game name: {game_name}"
        if game_type:
            embed.description = f"Filtered by type: {game_type.title()}"
        
        for game in games:
            players = json.loads(game['players']) if game['players'] else []
            
            # Count teams and players
            teams = {}
            for p in players:
                team = p['team_name']
                if team not in teams:
                    teams[team] = 0
                teams[team] += 1
            
            # Format date
            finished_date = game['finished_at'].strftime("%m/%d/%Y %H:%M") if game['finished_at'] else "Unknown"
            
            # Winner indicator
            winner = game['winner_team'] if game['winner_team'] else "Unknown"
            
            game_info = f"**Winner:** {winner}\n"
            game_info += f"**Type:** {game['game_type'].title()}\n"
            game_info += f"**Players:** {len(players)} | **Teams:** {len(teams)}\n"
            game_info += f"**Finished:** {finished_date}"
            
            embed.add_field(
                name=f"🏆 {game['game_name']}",
                value=game_info,
                inline=False
            )
        
        embed.set_footer(text=f"Showing {len(games)} of last {limit} games")
        await ctx.send(embed=embed)
        
    except Exception as e:
        await ctx.send(f"❌ Error getting game history: {str(e)}")

@bot.hybrid_command(name='hoi4leaderboard', description='Show ELO leaderboard')
async def hoi4leaderboard(ctx, game_type: Optional[str] = "standard", limit: Optional[int] = 10):
    """Show ELO leaderboard for standard or competitive"""
    if game_type.lower() not in ['standard', 'competitive']:
        await ctx.send("❌ Game type must be either 'standard' or 'competitive'")
        return
    
    if limit > 25:
        limit = 25  # Prevent too many results
    
    try:
        async with db_pool.acquire() as conn:
            async with conn.cursor(aiomysql.DictCursor) as cursor:
                # Get top players by ELO
                elo_field = f"{game_type.lower()}_elo"
                await cursor.execute(
                    f"SELECT discord_id, username, {elo_field}, created_at FROM players ORDER BY {elo_field} DESC LIMIT %s",
                    (limit,)
                )
                players = await cursor.fetchall()
                
                # Also get some statistics
                await cursor.execute(
                    f"SELECT COUNT(*) as total_players, AVG({elo_field}) as avg_elo, MAX({elo_field}) as max_elo, MIN({elo_field}) as min_elo FROM players"
                )
                stats = await cursor.fetchone()
        
        if not players:
            await ctx.send("📝 No players found in the database!")
            return
        
        # Create leaderboard embed
        embed = discord.Embed(
            title=f"🏆 HOI4 {game_type.title()} Leaderboard",
            color=discord.Color.gold()
        )
        
        # Add statistics
        embed.description = f"**Total Players:** {stats['total_players']} | **Average ELO:** {stats['avg_elo']:.0f}"
        
        leaderboard_text = ""
        medals = ["🥇", "🥈", "🥉"]
        
        for i, player in enumerate(players, 1):
            # Get medal or rank number
            if i <= 3:
                rank_indicator = medals[i-1]
            else:
                rank_indicator = f"**{i}.**"
            
            elo_value = player[elo_field]
            username = player['username']
            
            # Get additional player stats
            async with db_pool.acquire() as conn:
                async with conn.cursor(aiomysql.DictCursor) as cursor:
                    # Count games played with proper result detection
                    await cursor.execute(
                        """SELECT 
                            COUNT(*) as games_played, 
                            SUM(CASE WHEN result_type = 'win' THEN 1 ELSE 0 END) as games_won,
                            SUM(CASE WHEN result_type = 'draw' THEN 1 ELSE 0 END) as games_drawn
                        FROM game_results WHERE discord_id = %s""",
                        (player['discord_id'],)
                    )
                    player_stats = await cursor.fetchone()
            
            games_played = player_stats['games_played'] or 0
            games_won = player_stats['games_won'] or 0
            games_drawn = player_stats['games_drawn'] or 0
            win_rate = (games_won / games_played * 100) if games_played > 0 else 0
            
            leaderboard_text += f"{rank_indicator} **{username}** - {elo_value} ELO\n"
            if games_drawn > 0:
                leaderboard_text += f"   📊 {games_played} games | {games_won}W-{games_drawn}D-{games_played - games_won - games_drawn}L | {win_rate:.1f}% win rate\n\n"
            else:
                leaderboard_text += f"   📊 {games_played} games | {win_rate:.1f}% win rate\n\n"
        
        embed.add_field(
            name="Rankings",
            value=leaderboard_text,
            inline=False
        )
        
        embed.set_footer(text=f"ELO Range: {stats['min_elo']:.0f} - {stats['max_elo']:.0f}")
        await ctx.send(embed=embed)
        
    except Exception as e:
        await ctx.send(f"❌ Error getting leaderboard: {str(e)}")

@bot.event
async def on_command_error(ctx, error):
    """Handles command errors"""
    if isinstance(error, commands.CheckFailure):
        await ctx.send("❌ You don't have permission to use this command!")
    elif isinstance(error, commands.CommandNotFound):
        # Silently ignore command not found errors
        pass
    elif isinstance(error, commands.MissingRequiredArgument):
        await ctx.send(f"❌ Missing arguments! Command: `{ctx.command}`")
    elif isinstance(error, commands.BadArgument):
        await ctx.send("❌ Invalid argument!")
    else:
        # Log detailed error information
        print(f"❌ Unknown error in command '{ctx.command}': {type(error).__name__}: {error}")
        import traceback
        traceback.print_exc()
        
        # Send detailed error to user if owner
        if ctx.author.id == OWNER_ID:
            await ctx.send(f"❌ **Error Details (Owner only):**\n```python\n{type(error).__name__}: {str(error)[:1800]}\n```")
        else:
            await ctx.send("❌ An unknown error occurred!")

async def main():
    """Main function to start the bot"""
    # Load Discord token from environment variables
    token = os.getenv('DISCORD_TOKEN')
    
    if not token:
        print("❌ DISCORD_TOKEN environment variable not found!")
        print("Please set the DISCORD_TOKEN variable in Coolify or create a .env file")
        return
    
    if not DATABASE_URL:
        print("❌ DATABASE_URL environment variable not found!")
        print("Please set either DATABASE_URL or individual DB variables (DB_HOST, DB_NAME, DB_USER, DB_PASSWORD) in Coolify")
        print(f"Current values - HOST: {DB_HOST}, NAME: {DB_NAME}, USER: {DB_USER}, PASSWORD: {'***' if DB_PASSWORD else 'None'}")
        return
    
    try:
        print("🚀 Starting bot...")
        await bot.start(token)
    except discord.LoginFailure:
        print("❌ Invalid Discord token!")
    except Exception as e:
        print(f"❌ Error starting bot: {e}")
    finally:
        if db_pool:
            await db_pool.close()

if __name__ == "__main__":
    asyncio.run(main())