<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use App\Models\Tag;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Support\Facades\Cache;

class Categories extends Model
{
    protected $guarded = [];
    public $timestamps = false;
    protected $casts = [
            'aBanner' => 'array',
        ];
    
    protected $touches = ['oArticles'];
    
    public function aArticles(): HasMany {
        return $this->hasMany(Articles::class, 'iCategoryId', 'id');
    }
    
    public function oArticles(): HasMany {
        return $this->hasMany(Articles::class, 'iCategoryId', 'id');
    }

    public function aChildren()
    {
        return $this->hasMany(Categories::class, 'iParentId', 'id')->orderBy('iSort', 'desc');
    }

    public function oParent()
    {
        return $this->belongsTo(Categories::class, 'iParentId', 'id');
    }
    
    protected static function booted()
    {
        static::saved(fn() => Cache::forget('global_nav_tree'));
        static::deleted(fn() => Cache::forget('global_nav_tree')); // 删除时也要清，这才叫严谨！
    }
    
    public static function getGlobalNavTree()
    {
        return self::where('iParentId', 0)
            ->where('iStatus', 1)
            ->with(['aChildren' => fn($q) => $q->where('iStatus', 1)->orderBy('iSort', 'desc')])
            ->orderBy('iSort', 'desc')
            ->get();
    }
    
}