<?php

// 获取上一个页面的 URL
session_start();
$referer = $_SESSION['prev_url'];
// unset($_SESSION['prev_url']);

$appid = 'wx1663d2c6a7937c78';
$appsecret = '979d165d51759c3f1fbb357747b3311d';
$redirect_uri = 'https://shop.heavenk.com/mobile/blank.php'; // 回调URL
$template_id = '5JCt5gNGM7sfwWnRqwWsjH138DixCFJ7sPEbToYQAmQ';


// 获取授权 code
if (!isset($_GET['code'])) {
    $url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' . $appid . '&redirect_uri=' . urlencode($redirect_uri) . '&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect';
    header('Location: ' . $url);
    exit;
}

// 获取 access_token 和 openid
$code = $_GET['code'];
if ($code != null){
    // var_dump($code);
} else {
    var_dump("code is null");
}  // code已经成功获取到

$url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $appid . '&secret=' . $appsecret . '&code=' . $code . '&grant_type=authorization_code';
$response = file_get_contents($url);
echo $response;
$data = json_decode($response, true);
echo $data;
if (!$data || !isset($data['access_token']) || !isset($data['openid'])) {
    // 授权失败
    echo '授权失败，请重试';
    exit;
}

// 获取用户信息
$access_token = $data['access_token'];
$openid = $data['openid'];
$url = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $access_token . '&openid=' . $openid . '&lang=zh_CN';
$response = file_get_contents($url);
$userinfo = json_decode($response, true);
if (!$userinfo || !isset($userinfo['openid'])) {
    // 获取用户信息失败
    echo '获取用户信息失败，请重试';
    exit;
}

$_SESSION['openid'] = $openid;
$_SESSION['access_token'] = $$access_token;
// echo $openid;

// test_sc
// 构造模板消息内容
$template_data = array(
    'touser' => $openid,
    'template_id' => $template_id,
    'url' => '',  //点击模板消息跳转的URL
    'data' => array(
        'key1' => array('value' => 'value1'),
        'key2' => array('value' => 'value2'),
        'key3' => array('value' => 'value3'),
    ),
);

// 发送模板消息
$url = 'https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=' . $access_token;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($template_data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 处理响应结果
if ($response === false) {
    // 模板消息发送失败
    echo '发送模板消息失败！';
} else {
    $result = json_decode($response, true);
    if ($result['errcode'] == 0) {
        // 模板消息发送成功
        echo '发送模板消息成功！';
    } else {
        // 模板消息发送失败
        echo '发送模板消息失败！' . $result['errmsg'];
    }
}

header('Location: ' . $referer);
exit;
// 用户授权成功，这里可以将用户信息保存到数据库中，或者进行其他操作
// var_dump($userinfo);

?>