<?php

namespace App\Observers;

use App\Models\Commons\Menu; // ← 실제 경로 확인
use Spatie\Permission\Models\Permission;
use Spatie\Permission\PermissionRegistrar;

class MenuObserver
{
    protected function actions(): array
    {
        // config/authz.php 에서 오버라이드 가능 (없으면 기본값)
        return config('authz.menu_actions', ['view','create','update','delete','approve']);
    }

    protected string $guard = 'api';

    public function created(Menu $menu): void
    {
        if (!$this->shouldHandle($menu)) return;

        $this->setTeam((int)$menu->tenant_id);
        $this->ensurePermissions($menu);
        $this->forgetCache();
    }

    public function updated(Menu $menu): void
    {
        // 메뉴 ID 기반: 권한 이름 변경 불필요
        // 필요 시, 기본 롤 자동 부여/회수 같은 정책을 이곳에…
    }

    public function deleted(Menu $menu): void
    {
        if (!$this->shouldHandle($menu)) return;

        $this->setTeam((int)$menu->tenant_id);
        $this->removePermissions($menu);
        $this->forgetCache();
    }

    public function restored(Menu $menu): void
    {
        if (!$this->shouldHandle($menu)) return;

        $this->setTeam((int)$menu->tenant_id);
        $this->ensurePermissions($menu);
        $this->forgetCache();
    }

    public function forceDeleted(Menu $menu): void
    {
        if (!$this->shouldHandle($menu)) return;

        $this->setTeam((int)$menu->tenant_id);
        $this->removePermissions($menu);
        $this->forgetCache();
    }

    /** teams 사용 시 tenant_id 없는 공용 메뉴는 스킵하는 게 안전 */
    protected function shouldHandle(Menu $menu): bool
    {
        return !is_null($menu->tenant_id);
    }

    protected function setTeam(int $tenantId): void
    {
        app(PermissionRegistrar::class)->setPermissionsTeamId($tenantId);
    }

    protected function ensurePermissions(Menu $menu): void
    {
        foreach ($this->actions() as $act) {
            Permission::firstOrCreate([
                'tenant_id'  => (int)$menu->tenant_id,
                'guard_name' => $this->guard,
                'name'       => "menu:{$menu->id}.{$act}",
            ]);
        }
    }

    protected function removePermissions(Menu $menu): void
    {
        Permission::where('tenant_id', (int)$menu->tenant_id)
            ->where('guard_name', $this->guard)
            ->where(function ($q) use ($menu) {
                foreach ($this->actions() as $act) {
                    $q->orWhere('name', "menu:{$menu->id}.{$act}");
                }
            })->delete();
    }

    protected function forgetCache(): void
    {
        app(PermissionRegistrar::class)->forgetCachedPermissions();
    }
}