<?php namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class CatalogItem extends Model
{
    use SoftDeletes;

    protected $fillable = [
        'type',
        'category_id',
        'name',
        'description',
        'sku',
        'barcode',
        'is_stockable',
        'stock',
        'track_serials',
        'attributes',
        'is_active',
    ];

    protected $casts = [
        'is_stockable' => 'boolean',
        'track_serials' => 'boolean',
        'is_active' => 'boolean',
        'attributes' => 'array',
    ];

    protected $appends = ['has_serials'];

    // RELACIONES

    public function category()
    {
        return $this->belongsTo(Category::class);
    }

    public function price()
    {
        return $this->hasOne(Price::class);
    }

    public function serials()
    {
        return $this->hasMany(InventorySerial::class);
    }

    public function availableSerials()
    {
        return $this->hasMany(InventorySerial::class)
            ->where('status', 'disponible');
    }

    // HELPERS DE TIPO

    public function isProduct(): bool
    {
        return $this->type === 'product';
    }

    public function isService(): bool
    {
        return $this->type === 'service';
    }

    public function isLaundry(): bool
    {
        return $this->type === 'laundry';
    }

    // HELPERS DE STOCK

    public function getAvailableStockAttribute(): int
    {
        if (!$this->is_stockable) {
            return 0;
        }

        if ($this->track_serials) {
            return $this->availableSerials()->count();
        }

        return $this->stock ?? 0;
    }

    public function syncStock(): void
    {
        if ($this->is_stockable && $this->track_serials) {
            $this->update(['stock' => $this->availableSerials()->count()]);
        }
    }

    public function decrementStock(int $quantity): void
    {
        if ($this->is_stockable && !$this->track_serials) {
            $this->decrement('stock', $quantity);
        }
    }

    public function incrementStock(int $quantity): void
    {
        if ($this->is_stockable && !$this->track_serials) {
            $this->increment('stock', $quantity);
        }
    }

    public function getHasSerialsAttribute(): bool
    {
        return $this->track_serials &&
            isset($this->attributes['serials_count']) &&
            $this->attributes['serials_count'] > 0;
    }

    //HELPERS DE ATRIBUTOS

    public function getAtributos(string $key, $default = null)
    {
        return $this->attributes[$key] ?? $default;
    }

    //SCOPES

    public function scopeActive($query)
    {
        return $query->where('is_active', true);
    }

    public function scopeOfType($query, string $type)
    {
        return $query->where('type', $type);
    }

    public function scopeProducts($query)
    {
        return $query->where('type', 'product');
    }

    public function scopeServices($query)
    {
        return $query->where('type', 'service');
    }

    public function scopeStockable($query)
    {
        return $query->where('is_stockable', true);
    }
}