"""
Admin Management Commands

Administrative commands for league management and bot maintenance.
"""
from typing import Optional, Union
import asyncio

import discord
from discord.ext import commands
from discord import app_commands

from utils.logging import get_contextual_logger
from utils.decorators import logged_command
from views.embeds import EmbedColors, EmbedTemplate
from constants import SBA_CURRENT_SEASON


class AdminCommands(commands.Cog):
    """Administrative command handlers for league management."""
    
    def __init__(self, bot: commands.Bot):
        self.bot = bot
        self.logger = get_contextual_logger(f'{__name__}.AdminCommands')
    
    async def interaction_check(self, interaction: discord.Interaction) -> bool:
        """Check if user has admin permissions."""
        if not interaction.user.guild_permissions.administrator:
            await interaction.response.send_message(
                "❌ You need administrator permissions to use admin commands.",
                ephemeral=True
            )
            return False
        return True
    
    @app_commands.command(
        name="admin-status",
        description="Display bot status and system information"
    )
    @logged_command("/admin-status")
    async def admin_status(self, interaction: discord.Interaction):
        """Display comprehensive bot status information."""
        await interaction.response.defer()
        
        # Gather system information
        guilds_count = len(self.bot.guilds)
        users_count = sum(guild.member_count or 0 for guild in self.bot.guilds)
        commands_count = len([cmd for cmd in self.bot.tree.walk_commands()])
        
        # Bot uptime calculation
        uptime = discord.utils.utcnow() - self.bot.user.created_at if self.bot.user else None
        uptime_str = f"{uptime.days} days" if uptime else "Unknown"
        
        embed = EmbedTemplate.create_base_embed(
            title="🤖 Bot Status - Admin Panel",
            color=EmbedColors.INFO
        )
        
        # System Stats
        embed.add_field(
            name="System Information",
            value=f"**Guilds:** {guilds_count}\n"
                  f"**Users:** {users_count:,}\n"
                  f"**Commands:** {commands_count}\n"
                  f"**Uptime:** {uptime_str}",
            inline=True
        )
        
        # Bot Information  
        embed.add_field(
            name="Bot Information",
            value=f"**Latency:** {round(self.bot.latency * 1000)}ms\n"
                  f"**Version:** Discord.py {discord.__version__}\n"
                  f"**Current Season:** {SBA_CURRENT_SEASON}",
            inline=True
        )
        
        # Cog Status
        loaded_cogs = list(self.bot.cogs.keys())
        embed.add_field(
            name="Loaded Cogs",
            value="\n".join([f"✅ {cog}" for cog in loaded_cogs[:10]]) + 
                  (f"\n... and {len(loaded_cogs) - 10} more" if len(loaded_cogs) > 10 else ""),
            inline=False
        )
        
        embed.set_footer(text="Admin Status • Use /admin-help for more commands")
        await interaction.followup.send(embed=embed)
    
    @app_commands.command(
        name="admin-help",
        description="Display available admin commands and their usage"
    )
    @logged_command("/admin-help")
    async def admin_help(self, interaction: discord.Interaction):
        """Display comprehensive admin help information."""
        await interaction.response.defer()
        
        embed = EmbedTemplate.create_base_embed(
            title="🛠️ Admin Commands - Help",
            description="Available administrative commands for league management",
            color=EmbedColors.PRIMARY
        )
        
        # System Commands
        embed.add_field(
            name="System Management",
            value="**`/admin-status`** - Display bot status and information\n"
                  "**`/admin-reload <cog>`** - Reload a specific cog\n"
                  "**`/admin-sync`** - Sync application commands\n"
                  "**`/admin-clear <count>`** - Clear messages from channel",
            inline=False
        )
        
        # League Management  
        embed.add_field(
            name="League Management",
            value="**`/admin-season <season>`** - Set current season\n"
                  "**`/admin-announce <message>`** - Send announcement to channel\n"
                  "**`/admin-maintenance <on/off>`** - Toggle maintenance mode",
            inline=False
        )
        
        # User Management
        embed.add_field(
            name="User Management", 
            value="**`/admin-timeout <user> <duration>`** - Timeout a user\n"
                  "**`/admin-kick <user> <reason>`** - Kick a user\n"
                  "**`/admin-ban <user> <reason>`** - Ban a user",
            inline=False
        )
        
        embed.add_field(
            name="Usage Notes",
            value="• All admin commands require Administrator permissions\n"
                  "• Commands are logged for audit purposes\n"
                  "• Use with caution - some actions are irreversible",
            inline=False
        )
        
        embed.set_footer(text="Administrator Permissions Required")
        await interaction.followup.send(embed=embed)
    
    @app_commands.command(
        name="admin-reload",
        description="Reload a specific bot cog"
    )
    @app_commands.describe(
        cog="Name of the cog to reload (e.g., 'commands.players.info')"
    )
    @logged_command("/admin-reload")
    async def admin_reload(self, interaction: discord.Interaction, cog: str):
        """Reload a specific cog for hot-swapping code changes."""
        await interaction.response.defer()
        
        try:
            # Attempt to reload the cog
            await self.bot.reload_extension(cog)
            
            embed = EmbedTemplate.create_base_embed(
                title="✅ Cog Reloaded Successfully",
                description=f"Successfully reloaded `{cog}`",
                color=EmbedColors.SUCCESS
            )
            
            embed.add_field(
                name="Reload Details",
                value=f"**Cog:** {cog}\n"
                      f"**Status:** Successfully reloaded\n"
                      f"**Time:** {discord.utils.utcnow().strftime('%H:%M:%S UTC')}",
                inline=False
            )
            
        except commands.ExtensionNotFound:
            embed = EmbedTemplate.create_base_embed(
                title="❌ Cog Not Found",
                description=f"Could not find cog: `{cog}`",
                color=EmbedColors.ERROR
            )
        except commands.ExtensionNotLoaded:
            embed = EmbedTemplate.create_base_embed(
                title="❌ Cog Not Loaded",
                description=f"Cog `{cog}` is not currently loaded",
                color=EmbedColors.ERROR
            )
        except Exception as e:
            embed = EmbedTemplate.create_base_embed(
                title="❌ Reload Failed",
                description=f"Failed to reload `{cog}`: {str(e)}",
                color=EmbedColors.ERROR
            )
        
        await interaction.followup.send(embed=embed)
    
    @app_commands.command(
        name="admin-sync",
        description="Sync application commands with Discord"
    )
    @logged_command("/admin-sync")
    async def admin_sync(self, interaction: discord.Interaction):
        """Sync slash commands with Discord API."""
        await interaction.response.defer()
        
        try:
            synced_commands = await self.bot.tree.sync()
            
            embed = EmbedTemplate.create_base_embed(
                title="✅ Commands Synced Successfully",
                description=f"Synced {len(synced_commands)} application commands",
                color=EmbedColors.SUCCESS
            )
            
            # Show some of the synced commands
            command_names = [cmd.name for cmd in synced_commands[:10]]
            embed.add_field(
                name="Synced Commands",
                value="\n".join([f"• /{name}" for name in command_names]) +
                      (f"\n... and {len(synced_commands) - 10} more" if len(synced_commands) > 10 else ""),
                inline=False
            )
            
            embed.add_field(
                name="Sync Details",
                value=f"**Total Commands:** {len(synced_commands)}\n"
                      f"**Guild ID:** {interaction.guild_id}\n"
                      f"**Time:** {discord.utils.utcnow().strftime('%H:%M:%S UTC')}",
                inline=False
            )
            
        except Exception as e:
            embed = EmbedTemplate.create_base_embed(
                title="❌ Sync Failed",
                description=f"Failed to sync commands: {str(e)}",
                color=EmbedColors.ERROR
            )
        
        await interaction.followup.send(embed=embed)
    
    @app_commands.command(
        name="admin-clear",
        description="Clear messages from the current channel"
    )
    @app_commands.describe(
        count="Number of messages to delete (1-100)"
    )
    @logged_command("/admin-clear")
    async def admin_clear(self, interaction: discord.Interaction, count: int):
        """Clear a specified number of messages from the channel."""
        if count < 1 or count > 100:
            await interaction.response.send_message(
                "❌ Count must be between 1 and 100.",
                ephemeral=True
            )
            return
        
        await interaction.response.defer()
        
        try:
            deleted = await interaction.channel.purge(limit=count)
            
            embed = EmbedTemplate.create_base_embed(
                title="🗑️ Messages Cleared",
                description=f"Successfully deleted {len(deleted)} messages",
                color=EmbedColors.SUCCESS
            )
            
            embed.add_field(
                name="Clear Details",
                value=f"**Messages Deleted:** {len(deleted)}\n"
                      f"**Channel:** {interaction.channel.mention}\n"
                      f"**Requested:** {count} messages\n"
                      f"**Time:** {discord.utils.utcnow().strftime('%H:%M:%S UTC')}",
                inline=False
            )
            
            # Send confirmation and auto-delete after 5 seconds
            message = await interaction.followup.send(embed=embed)
            await asyncio.sleep(5)
            try:
                await message.delete()
            except discord.NotFound:
                pass  # Message already deleted
                
        except discord.Forbidden:
            await interaction.followup.send(
                "❌ Missing permissions to delete messages.",
                ephemeral=True
            )
        except Exception as e:
            await interaction.followup.send(
                f"❌ Failed to clear messages: {str(e)}",
                ephemeral=True
            )
    
    @app_commands.command(
        name="admin-announce",
        description="Send an announcement to the current channel"
    )
    @app_commands.describe(
        message="Announcement message to send",
        mention_everyone="Whether to mention @everyone (default: False)"
    )
    @logged_command("/admin-announce")
    async def admin_announce(
        self, 
        interaction: discord.Interaction, 
        message: str,
        mention_everyone: bool = False
    ):
        """Send an official announcement to the channel."""
        await interaction.response.defer()
        
        embed = EmbedTemplate.create_base_embed(
            title="📢 League Announcement",
            description=message,
            color=EmbedColors.PRIMARY
        )
        
        embed.set_footer(
            text=f"Announcement by {interaction.user.display_name}",
            icon_url=interaction.user.display_avatar.url
        )
        
        content = "@everyone" if mention_everyone else None
        
        await interaction.followup.send(content=content, embed=embed)
        
        # Log the announcement
        self.logger.info(
            f"Announcement sent by {interaction.user} in {interaction.channel}: {message[:100]}..."
        )
    
    @app_commands.command(
        name="admin-maintenance",
        description="Toggle maintenance mode for the bot"
    )
    @app_commands.describe(
        mode="Turn maintenance mode on or off"
    )
    @app_commands.choices(mode=[
        app_commands.Choice(name="On", value="on"),
        app_commands.Choice(name="Off", value="off")
    ])
    @logged_command("/admin-maintenance")
    async def admin_maintenance(self, interaction: discord.Interaction, mode: str):
        """Toggle maintenance mode to prevent normal command usage."""
        await interaction.response.defer()
        
        # This would typically set a global flag or database value
        # For now, we'll just show the interface
        
        is_enabling = mode.lower() == "on"
        status_text = "enabled" if is_enabling else "disabled"
        color = EmbedColors.WARNING if is_enabling else EmbedColors.SUCCESS
        
        embed = EmbedTemplate.create_base_embed(
            title=f"🔧 Maintenance Mode {status_text.title()}",
            description=f"Maintenance mode has been **{status_text}**",
            color=color
        )
        
        if is_enabling:
            embed.add_field(
                name="Maintenance Active",
                value="• Normal commands are disabled\n"
                      "• Only admin commands are available\n"
                      "• Users will see maintenance message",
                inline=False
            )
        else:
            embed.add_field(
                name="Maintenance Ended",
                value="• All commands are now available\n"
                      "• Normal bot operation resumed\n"
                      "• Users can access all features",
                inline=False
            )
        
        embed.add_field(
            name="Status Change",
            value=f"**Changed by:** {interaction.user.mention}\n"
                  f"**Time:** {discord.utils.utcnow().strftime('%H:%M:%S UTC')}\n"
                  f"**Mode:** {status_text.title()}",
            inline=False
        )
        
        await interaction.followup.send(embed=embed)


async def setup(bot: commands.Bot):
    """Load the admin commands cog."""
    await bot.add_cog(AdminCommands(bot))