<?php

namespace ali;

use app\common\model\SettingModel;
use think\facade\Log;

/**
 * 阿里云短信服务 PHP 示例
 *
 * 功能：
 * 1. 自动生成签名
 * 2. 支持单条短信发送
 * 3. 完善的错误处理
 * 4. 响应结果解析
 */
class Ali
{
    // 阿里云短信服务配置
    private $accessKeyId;      // 替换为您的AccessKey ID
    private $accessKeySecret; // 替换为您的AccessKey Secret
    private $signName;             // 短信签名
    private $regionId = 'cn-hangzhou';                // 区域ID
    private $endpoint = 'dysmsapi.aliyuncs.com';      // 短信服务域名

    // 发送短信
    public function send($phone, $smslog_param)
    {
        $config = SettingModel::getConfigValue(['sms_ali_accesskeyid', 'sms_ali_accesskeysecret', 'sms_ali_signname']);
        if (empty($config['sms_ali_accesskeyid']) || empty($config['sms_ali_accesskeysecret']) || empty($config['sms_ali_signname'])) {
            return ['code' => 1, 'msg' => '请绑定模板参数'];
        }

        //模板编号
        $templateCode          = $smslog_param['template']['ali'];
        if (empty($templateCode)) {
            return ['code' => 1, 'msg' => '系统未配置阿里模板编号'];
        }

        $this->accessKeyId     = $config['sms_ali_accesskeyid'];
        $this->accessKeySecret = $config['sms_ali_accesskeysecret'];
        $this->signName        = $config['sms_ali_signname'];
        $templateParam         = $smslog_param['template_param'];

        // 公共参数
        $params = [
            'RegionId'         => $this->regionId,
            'AccessKeyId'      => $this->accessKeyId,
            'Format'           => 'JSON',
            'SignatureMethod'  => 'HMAC-SHA1',
            'SignatureVersion' => '1.0',
            'SignatureNonce'   => uniqid(),
            'Timestamp'        => gmdate('Y-m-d\TH:i:s\Z'),
            'Action'           => 'SendSms',
            'Version'          => '2017-05-25',
            'PhoneNumbers'     => $phone,
            'SignName'         => $this->signName,
            'TemplateCode'     => $templateCode,
        ];

        // 添加模板参数（如果有）
        if (!empty($templateParam)) {
            $params['TemplateParam'] = json_encode($templateParam);
        }

        // 生成签名
        $params['Signature'] = $this->generateSignature($params);

        // 构建请求URL
        $url = 'https://' . $this->endpoint . '/?' . http_build_query($params);

        // 发送HTTP请求
        return $this->sendRequest($url);
    }

    // 生成签名
    private function generateSignature($params)
    {
        // 参数排序
        ksort($params);

        // 构造查询字符串
        $queryString = '';
        foreach ($params as $key => $value) {
            $queryString .= '&' . $this->percentEncode($key) . '=' . $this->percentEncode($value);
        }

        // 构造签名字符串
        $stringToSign = 'GET&%2F&' . $this->percentEncode(substr($queryString, 1));

        // 计算签名
        $signature = base64_encode(hash_hmac('sha1', $stringToSign, $this->accessKeySecret . '&', true));

        return $signature;
    }

    // URL编码
    private function percentEncode($str)
    {
        $res = urlencode($str);
        $res = str_replace(['+', '*'], ['%20', '%2A'], $res);
        $res = preg_replace('/%7E/', '~', $res);
        return $res;
    }

    // 发送HTTP请求
    private function sendRequest($url)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);

        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if (curl_errno($ch)) {
            Log::error('短信发送失败：' . curl_error($ch));
            return ['code' => 1, 'msg' => '短信发送失败'];
        }

        curl_close($ch);
        if ($httpCode !== 200) {
            Log::error('短信发送失败，状态码：' . $httpCode);
            return ['code' => 1, 'msg' => '短信发送失败，状态码：' . $httpCode];
        }

        $res = json_decode($response, true);
        if ($res['Code'] == 'OK') {
            return ['code' => 0];
        } else {
            Log::error('短信发送失败：' . $response . "。原始参数：" . $url);
            return ['code' => 1, 'msg' => $res['Message']];
        }
    }
}