<?php

namespace app\common\service;

use app\common\logic\PermLogic;
use support\Cache;

class PermService
{
    protected $logic;

    public function __construct()
    {
        $this->logic = (new PermLogic());
    }

    // 用户资源缓存key
    protected static function cacheKey(int $userId, string $systemCode): string
    {
        return "user_resources_{$userId}_{$systemCode}";
    }

    /**
     * 获取用户所有资源（合并角色+直接分配），结果缓存
     */
    public function getUserResources(int $userId, string $systemCode)
    {
        $cacheKey = self::cacheKey($userId, $systemCode);
        $cached   = Cache::get($cacheKey);
        if ($cached !== null) {
            return $cached;
        }
        // 调用 Logic 层获取资源
        $resources = $this->logic->getUserResources($userId, $systemCode);
        // 缓存结果
        Cache::set($cacheKey, $resources, 3600);
        return $resources;
    }

    /**
     * 构建目录/菜单树，节点包含权限与打开方式
     */
    public function getMenuTree(int $userId, string $systemCode): array
    {
        // 调用 Logic 层处理菜单构建
        $resources = $this->getUserResources($userId, $systemCode);
        return $this->logic->buildTree($resources);
    }

    /**
     * 获取用户所有权限code
     */
    public function getPermissionCodes(int $userId, string $systemCode): array
    {
        return $this->logic->getPermissionCodes($userId, $systemCode);
    }

    /**
     * 清除资源相关缓存
     */
    public function clearCache(int $userId, string $systemCode): void
    {
        Cache::delete(self::cacheKey($userId, $systemCode));
    }
}