<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class ProductCategory extends Model
{
    protected $fillable = [
        'parent_id',
        'code',
        'name',
        'description',
        'active',
    ];

    protected $casts = [
        'active' => 'boolean',
    ];

    /**
     * Get the parent category
     */
    public function parent(): BelongsTo
    {
        return $this->belongsTo(ProductCategory::class, 'parent_id');
    }

    /**
     * Get the child categories
     */
    public function children(): HasMany
    {
        return $this->hasMany(ProductCategory::class, 'parent_id');
    }

    /**
     * Get all products in this category
     */
    public function products(): HasMany
    {
        return $this->hasMany(Product::class, 'categorie_id');
    }

    /**
     * Get all descendant categories (recursive)
     */
    public function descendants(): HasMany
    {
        return $this->children()->with('descendants');
    }

    /**
     * Get the hierarchical path of the category
     */
    public function getPathAttribute(): string
    {
        $path = $this->name;
        $parent = $this->parent;

        while ($parent) {
            $path = $parent->name . ' > ' . $path;
            $parent = $parent->parent;
        }

        return $path;
    }

    /**
     * Scope to get only active categories
     */
    public function scopeActive($query)
    {
        return $query->where('active', true);
    }

    /**
     * Scope to get root categories (no parent)
     */
    public function scopeRoots($query)
    {
        return $query->whereNull('parent_id');
    }

    /**
     * Check if category has children
     */
    public function hasChildren(): bool
    {
        return $this->children()->exists();
    }

    /**
     * Check if category has products
     */
    public function hasProducts(): bool
    {
        return $this->products()->exists();
    }
}