// ==================== 微信内自动登录 AJAX 接口 ====================

// AJAX: 获取网页授权 URL
add_action('wp_ajax_zib_wx_get_auth_url', 'zib_wx_ajax_get_auth_url');
add_action('wp_ajax_nopriv_zib_wx_get_auth_url', 'zib_wx_ajax_get_auth_url');
function zib_wx_ajax_get_auth_url() {
    $nonce = isset($_POST['nonce']) ? sanitize_text_field($_POST['nonce']) : '';
    if (!wp_verify_nonce($nonce, 'zib_wx_auth_nonce')) {
        wp_send_json_error(['msg' => '安全验证失败，请刷新页面重试']);
        return;
    }
    if (get_current_user_id()) {
        wp_send_json_error(['msg' => '您已登录，无需重复操作']);
        return;
    }
    $config = _pz('oauth_weixingzh_option', []);
    if (empty($config['appid']) || empty($config['appkey'])) {
        wp_send_json_error(['msg' => '微信公众号配置不完整']);
        return;
    }
    $sdk_paths = [
        __DIR__ . '/../oauth/sdk/weixingzh.php',
        get_template_directory() . '/oauth/sdk/weixingzh.php',
        '/www/sites/2-1gv/index/wp-content/themes/zibll修复版2/oauth/sdk/weixingzh.php',
    ];
    $sdk_loaded = false;
    foreach ($sdk_paths as $p) {
        if (@file_exists($p)) {
            require_once $p;
            $sdk_loaded = true;
            break;
        }
    }
    if (!$sdk_loaded) {
        wp_send_json_error(['msg' => 'SDK加载失败']);
        return;
    }
    $WeChat = new \Weixin\GZH\OAuth2($config['appid'], $config['appkey']);
    $callback_url = add_query_arg(['action' => 'web_auth_callback'], home_url('/oauth/weixingzh/callback'));
    $rurl = isset($_POST['rurl']) ? esc_url_raw($_POST['rurl']) : home_url();
    $state = wp_create_nonce('zib_wx_auth_' . time());
    if (!session_id()) @session_start();
    $_SESSION['zib_wx_auth_rurl'] = $rurl;
    $_SESSION['zib_wx_auth_state'] = $state;
    $auth_url = $WeChat->getWebAuthUrl($callback_url, $state, 'snsapi_userinfo', true);
    wp_send_json_success(['auth_url' => $auth_url, 'state' => $state]);
}

// AJAX: 检测关注状态
add_action('wp_ajax_zib_wx_check_subscribe', 'zib_wx_ajax_check_subscribe');
add_action('wp_ajax_nopriv_zib_wx_check_subscribe', 'zib_wx_ajax_check_subscribe');
function zib_wx_ajax_check_subscribe() {
    $openid = isset($_POST['openid']) ? sanitize_text_field($_POST['openid']) : '';
    if (empty($openid)) {
        wp_send_json_error(['msg' => '缺少openid参数']);
        return;
    }
    $config = _pz('oauth_weixingzh_option', []);
    if (empty($config['appid']) || empty($config['appkey'])) {
        wp_send_json_error(['msg' => '微信公众号配置不完整']);
        return;
    }
    $sdk_paths = [
        __DIR__ . '/../oauth/sdk/weixingzh.php',
        get_template_directory() . '/oauth/sdk/weixingzh.php',
        '/www/sites/2-1gv/index/wp-content/themes/zibll修复版2/oauth/sdk/weixingzh.php',
    ];
    $sdk_loaded = false;
    foreach ($sdk_paths as $p) {
        if (@file_exists($p)) {
            require_once $p;
            $sdk_loaded = true;
            break;
        }
    }
    if (!$sdk_loaded) {
        wp_send_json_error(['msg' => 'SDK加载失败']);
        return;
    }
    try {
        $WeChat = new \Weixin\GZH\OAuth2($config['appid'], $config['appkey']);
        $result = $WeChat->checkUserSubscribe($openid);
        wp_send_json_success([
            'subscribed' => !empty($result['subscribed']),
            'subscribe_scene' => !empty($result['subscribe_scene']) ? $result['subscribe_scene'] : '',
            'subscribe_time' => !empty($result['subscribe_time']) ? $result['subscribe_time'] : 0,
        ]);
    } catch (Exception $e) {
        wp_send_json_error(['msg' => $e->getMessage()]);
    }
}

// AJAX: 检测登录状态
add_action('wp_ajax_zib_wx_check_login_status', 'zib_wx_ajax_check_login_status');
add_action('wp_ajax_nopriv_zib_wx_check_login_status', 'zib_wx_ajax_check_login_status');
function zib_wx_ajax_check_login_status() {
    $openid = isset($_POST['openid']) ? sanitize_text_field($_POST['openid']) : '';
    if (empty($openid)) {
        wp_send_json_error(['msg' => '缺少openid参数']);
        return;
    }
    $users = get_users([
        'meta_key' => 'oauth_weixingzh_openid',
        'meta_value' => $openid,
        'number' => 1,
    ]);
    if (!empty($users)) {
        $user = $users[0];
        wp_send_json_success(['logged_in' => true, 'user_id' => $user->ID, 'user_login' => $user->user_login]);
    } else {
        wp_send_json_success(['logged_in' => false, 'need_register' => true]);
    }
}
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