<?php

namespace App\Models;

use App\Enums\ItemType;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

/**
 * @property int $id
 * @property string $name
 * @property string $slug
 * @property string|null $description
 * @property ItemType $type
 * @property int $value
 * @property int|null $buy_price
 * @property int|null $sell_price
 * @property int|null $requires_level
 * @property int $attack_bonus
 * @property int $defense_bonus
 * @property int $health_bonus
 * @property int $energy_bonus
 * @property bool $is_tradeable
 * @property bool $is_usable
 * @property \Illuminate\Support\Carbon $created_at
 * @property \Illuminate\Support\Carbon $updated_at
 */
class Item extends Model
{
    use HasFactory;

    protected $fillable = [
        'name',
        'slug',
        'description',
        'type',
        'value',
        'buy_price',
        'sell_price',
        'requires_level',
        'attack_bonus',
        'defense_bonus',
        'health_bonus',
        'energy_bonus',
        'is_tradeable',
        'is_usable',
    ];

    protected $casts = [
        'type' => ItemType::class,
        'is_tradeable' => 'boolean',
        'is_usable' => 'boolean',
    ];

    /**
     * Get the characters that have this item in their inventory.
     */
    public function characters(): BelongsToMany
    {
        return $this->belongsToMany(Character::class, 'inventories')
            ->withPivot('quantity', 'equipped')
            ->withTimestamps();
    }

    /**
     * Get the shops that sell this item.
     */
    public function shops(): BelongsToMany
    {
        return $this->belongsToMany(Shop::class, 'shop_items')
            ->withPivot('stock', 'price')
            ->withTimestamps();
    }

    /**
     * Check if this item can be equipped
     */
    public function canEquip(): bool
    {
        return $this->type->canEquip();
    }

    /**
     * Check if this item can be used/consumed
     */
    public function canUse(): bool
    {
        return $this->is_usable && $this->type->canUse();
    }

    /**
     * Check if a character can use this item (level requirement)
     */
    public function canBeUsedBy(Character $character): bool
    {
        if ($this->requires_level && $character->level < $this->requires_level) {
            return false;
        }
        
        return true;
    }

    /**
     * Get the sell price or default to half of buy price
     */
    public function getSellPriceAttribute(): int
    {
        if ($this->sell_price > 0) {
            return $this->sell_price;
        }
        
        return (int) ($this->buy_price * 0.5);
    }

    /**
     * Check if this is a weapon
     */
    public function isWeapon(): bool
    {
        return $this->type === ItemType::WEAPON;
    }

    /**
     * Check if this is armor
     */
    public function isArmor(): bool
    {
        return $this->type === ItemType::ARMOR;
    }

    /**
     * Check if this is a consumable
     */
    public function isConsumable(): bool
    {
        return $this->type === ItemType::CONSUMABLE;
    }

    /**
     * Get the display name for the item type
     */
    public function getTypeLabelAttribute(): string
    {
        return $this->type->label();
    }
}