<?php

namespace app\admin\controller\config;

use app\common\controller\Backend;
use think\Cache;

/**
 * 微信小程序配置管理
 */
class WxMiniProgram extends Backend
{
    protected $model = null;
    protected $configName = 'wxMiniProgram';

    public function _initialize()
    {
        parent::_initialize();
        \app\common\model\fill\Handle::check('config_system', $this->configName);
    }

    /**
     * 获取配置
     * @return mixed
     */
    public function getConfig()
    {
        $data = \app\common\model\config\System::getConfig($this->configName);
        return $this->success("获取成功", $data);
    }

    /**
     * 刷新Token
     * @return mixed
     */
    public function refreshToken()
    {
        $token = $this->generateRandomString(32);
        $this->saveConfig('msg_push_token', $token);
        return $this->success("刷新成功", ['msg_push_token' => $token]);
    }

    /**
     * 刷新EncodingAESKey
     * @return mixed
     */
    public function refreshAESKey()
    {
        $aesKey = $this->generateRandomString(43);
        $this->saveConfig('msg_push_aes_key', $aesKey);
        return $this->success("刷新成功", ['msg_push_aes_key' => $aesKey]);
    }

    /**
     * 保存配置字段
     * @param string $fieldName 字段名
     * @param string $value 值
     */
    private function saveConfig($fieldName, $value)
    {
        $config = \app\common\model\config\System::load($this->configName);
        if (!$config) {
            $this->error("配置不存在");
        }

        foreach ($config as &$item) {
            if ($item['name'] === $fieldName) {
                $item['value'] = $value;
                break;
            }
        }

        $model = new \app\admin\model\config\System();
        $row = $model->where(['name' => $this->configName])->find();
        if ($row) {
            $row->value = json_encode(array_values($config), JSON_UNESCAPED_UNICODE);
            $row->save();
            Cache::rm(\app\common\constant\cache\Keys::SYSTEM_CONFIG($this->configName));
        }
    }

    /**
     * 生成随机字符串
     * @param int $length 长度
     * @return string
     */
    private function generateRandomString($length)
    {
        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
        $result = '';
        for ($i = 0; $i < $length; $i++) {
            $result .= $chars[random_int(0, strlen($chars) - 1)];
        }
        return $result;
    }
}