# cogs/progression.py
import discord
from discord import app_commands
from discord.ext import commands
import logging

from services.progression_service import ProgressionService
from utils.code_converter import decode_id

logger = logging.getLogger(__name__)

class ProgressionCog(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

    @app_commands.command(name="sufuse", description="Sacrifice a duplicate card to unlock a Constellation node (Max C6)")
    @app_commands.describe(
        target_code="The alphanumeric code of the card you want to UPGRADE",
        sacrifice_code="The alphanumeric code of the duplicate you want to DESTROY"
    )
    async def fuse(self, interaction: discord.Interaction, target_code: str, sacrifice_code: str):
        await interaction.response.defer(thinking=True)
        
        try:
            target_id = decode_id(target_code)
            sacrifice_id = decode_id(sacrifice_code)
        except ValueError:
            return await interaction.followup.send("❌ Invalid card code format. Please check your codes.")
            
        try:
            char_name, new_constellation = await ProgressionService.fuse_character(
                interaction.user.id, target_id, sacrifice_id
            )
            
            embed_color = discord.Color.purple() if new_constellation < 6 else discord.Color.gold()
            
            embed = discord.Embed(
                title="✨ Constellation Unlocked!",
                description=f"You successfully sacrificed `{sacrifice_code}` to empower `{target_code}`.",
                color=embed_color
            )
            
            if new_constellation == 6:
                embed.add_field(name=f"🌟 {char_name} is now AWAKENED!", value="**Constellation 6 Reached.** Maximum power achieved.", inline=False)
            else:
                embed.add_field(name=char_name, value=f"⭐ Constellation {new_constellation} Unlocked!", inline=False)
            
            await interaction.followup.send(embed=embed)
            
        except ValueError as e:
            await interaction.followup.send(f"❌ {str(e)}")
        except Exception as e:
            logger.error(f"Fusion Error: {e}", exc_info=True)
            await interaction.followup.send("❌ An unexpected database error occurred.")

    @app_commands.command(name="suascend", description="Spend economy resources to level up a Vanguard character (Max Lvl. 100)")
    @app_commands.describe(
        card_code="The alphanumeric code of the card you want to level up",
        levels="How many levels you want to add (Default is 1)"
    )
    async def ascend(self, interaction: discord.Interaction, card_code: str, levels: int = 1):
        await interaction.response.defer(thinking=True)
        
        try:
            instance_id = decode_id(card_code)
        except ValueError:
            return await interaction.followup.send("❌ Invalid card code format.")
            
        try:
            char_name, new_level, cost_coins, cost_dust = await ProgressionService.ascend_character(
                interaction.user.id, instance_id, levels
            )
            
            dust_str = f" and **{cost_dust:,} Dust**" if cost_dust > 0 else ""
            
            embed = discord.Embed(
                title="⬆️ Vanguard Ascended!",
                description=f"**{char_name}** (`{card_code}`) has been leveled up!\n\nThey are now **Level {new_level}**.",
                color=discord.Color.green()
            )
            embed.set_footer(text=f"Resources Burned: {cost_coins:,} Coins{dust_str}")
            
            await interaction.followup.send(embed=embed)
            
        except ValueError as e:
            await interaction.followup.send(f"❌ {str(e)}")
        except Exception as e:
            logger.error(f"Ascension Error: {e}", exc_info=True)
            await interaction.followup.send("❌ An unexpected database error occurred.")

async def setup(bot):
    await bot.add_cog(ProgressionCog(bot))