#!/usr/bin/env python3
"""Inventory management module for PetBot"""

from .base_module import BaseModule

class Inventory(BaseModule):
    """Handles inventory, item usage, and item management commands"""
    
    def get_commands(self):
        return ["inventory", "inv", "items", "use", "item"]
    
    async def handle_command(self, channel, nickname, command, args):
        if command in ["inventory", "inv", "items"]:
            await self.cmd_inventory(channel, nickname)
        elif command in ["use", "item"]:
            await self.cmd_use_item(channel, nickname, args)
    
    async def cmd_inventory(self, channel, nickname):
        """Display player's inventory"""
        player = await self.require_player(channel, nickname)
        if not player:
            return
        
        inventory = await self.database.get_player_inventory(player["id"])
        
        if not inventory:
            self.send_message(channel, f"🎒 {nickname}: Your inventory is empty! Try exploring to find items.")
            return
        
        # Group items by category
        categories = {}
        for item in inventory:
            category = item["category"]
            if category not in categories:
                categories[category] = []
            categories[category].append(item)
        
        # Send inventory summary first
        total_items = sum(item["quantity"] for item in inventory)
        self.send_message(channel, f"🎒 {nickname}'s Inventory ({total_items} items):")
        
        # Display items by category
        rarity_symbols = {
            "common": "○",
            "uncommon": "◇", 
            "rare": "◆",
            "epic": "★",
            "legendary": "✦"
        }
        
        for category, items in categories.items():
            category_display = category.replace("_", " ").title()
            self.send_message(channel, f"📦 {category_display}:")
            
            for item in items[:5]:  # Limit to 5 items per category to avoid spam
                symbol = rarity_symbols.get(item["rarity"], "○")
                quantity_str = f" x{item['quantity']}" if item["quantity"] > 1 else ""
                self.send_message(channel, f"  {symbol} {item['name']}{quantity_str} - {item['description']}")
            
            if len(items) > 5:
                self.send_message(channel, f"  ... and {len(items) - 5} more items")
        
        self.send_message(channel, f"💡 Use '!use <item name>' to use consumable items!")
    
    async def cmd_use_item(self, channel, nickname, args):
        """Use an item from inventory"""
        if not args:
            self.send_message(channel, f"{nickname}: Specify an item to use! Example: !use Small Potion")
            return
        
        player = await self.require_player(channel, nickname)
        if not player:
            return
        
        item_name = " ".join(args)
        result = await self.database.use_item(player["id"], item_name)
        
        if not result["success"]:
            self.send_message(channel, f"❌ {nickname}: {result['error']}")
            return
        
        item = result["item"]
        effect = result["effect"]
        effect_value = result["effect_value"]
        
        # Handle different item effects
        if effect == "heal":
            # Find active pet to heal
            active_pets = await self.database.get_active_pets(player["id"])
            if not active_pets:
                self.send_message(channel, f"❌ {nickname}: You need an active pet to use healing items!")
                return
            
            # Heal the first active pet (can be expanded to choose specific pet)
            pet = active_pets[0]
            old_hp = pet["hp"]
            new_hp = min(pet["max_hp"], pet["hp"] + effect_value)
            healed_amount = new_hp - old_hp
            
            # Update pet HP in database
            await self.database.update_pet_hp(pet["id"], new_hp)
            
            self.send_message(channel, 
                f"💊 {nickname}: Used {item['name']} on {pet['nickname'] or pet['species_name']}! "
                f"Restored {healed_amount} HP ({old_hp} → {new_hp}/{pet['max_hp']})")
        
        elif effect == "full_heal":
            active_pets = await self.database.get_active_pets(player["id"])
            if not active_pets:
                self.send_message(channel, f"❌ {nickname}: You need an active pet to use healing items!")
                return
            
            pet = active_pets[0]
            old_hp = pet["hp"]
            healed_amount = pet["max_hp"] - old_hp
            
            await self.database.update_pet_hp(pet["id"], pet["max_hp"])
            
            self.send_message(channel, 
                f"✨ {nickname}: Used {item['name']} on {pet['nickname'] or pet['species_name']}! "
                f"Fully restored HP! ({old_hp} → {pet['max_hp']}/{pet['max_hp']})")
        
        elif effect == "attack_boost":
            self.send_message(channel, 
                f"⚔️ {nickname}: Used {item['name']}! Your next battle will have +{effect_value}% attack damage!")
        
        elif effect == "defense_boost":
            self.send_message(channel, 
                f"🛡️ {nickname}: Used {item['name']}! Your next battle will have +{effect_value}% damage reduction!")
        
        elif effect == "speed_boost":
            self.send_message(channel, 
                f"💨 {nickname}: Used {item['name']}! You'll move first in your next battle!")
        
        elif effect == "lucky_boost":
            self.send_message(channel, 
                f"🍀 {nickname}: Used {item['name']}! Rare pet encounter rate increased by {effect_value}% for 1 hour!")
        
        elif effect == "none":
            self.send_message(channel, 
                f"📦 {nickname}: Used {item['name']}! This item has no immediate effect but may be useful later.")
        
        else:
            self.send_message(channel, 
                f"✅ {nickname}: Used {item['name']}! {item['description']}")