<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Support\Facades\Auth;

class MenuItem extends Model
{
    protected $fillable = [
        'menu_id',
        'parent_id',
        'title',
        'type',
        'url',
        'route',
        'route_params',
        'module',
        'permission',
        'icon',
        'target',
        'order',
        'is_active',
    ];

    protected $casts = [
        'route_params' => 'array',
        'is_active' => 'boolean',
        'order' => 'integer',
    ];

    public function menu(): BelongsTo
    {
        return $this->belongsTo(Menu::class);
    }

    public function parent(): BelongsTo
    {
        return $this->belongsTo(MenuItem::class, 'parent_id');
    }

    public function children(): HasMany
    {
        return $this->hasMany(MenuItem::class, 'parent_id')->orderBy('order');
    }

    public function getUrlAttribute(): ?string
    {
        return match ($this->type) {
            'link' => $this->attributes['url'],
            'route' => $this->route ? route($this->route, $this->route_params ?? []) : null,
            'module' => $this->module ? route("{$this->module}.index") : null,
            default => null,
        };
    }

    public function isVisibleToUser(?User $user = null): bool
    {
        if (!$this->is_active) {
            return false;
        }

        $user = $user ?? Auth::user();

        if (!$user) {
            return !$this->permission && !$this->module;
        }

        if ($user->hasRole('admin')) {
            return true;
        }

        if ($this->permission) {
            return $user->can($this->permission);
        }

        if ($this->module) {
            return $user->can("{$this->module}.view");
        }

        return true;
    }

    public function getVisibleChildren(?User $user = null): \Illuminate\Support\Collection
    {
        return $this->children->filter(fn (MenuItem $item) => $item->isVisibleToUser($user));
    }
}