htmlData function

Future<String> htmlData({ required String siteKey, String? action, String? cData, String type = "app", required TurnstileOptions options, required String onTurnstileReady, required String onBeforeInteractive, required String onAfterInteractive, required String onTokenReceived, required String onTurnstileError, required String onTokenExpired, required String onWidgetCreated, })

define html

Implementation

Future<String> htmlData({
  required String siteKey,
  String? action,
  String? cData,
  String type = "app",
  required TurnstileOptions options,
  required String onTurnstileReady,
  required String onBeforeInteractive,
  required String onAfterInteractive,
  required String onTokenReceived,
  required String onTurnstileError,
  required String onTokenExpired,
  required String onWidgetCreated,
}) async {
  ///正则匹配TURNSTILE_*类型的文本，分case进行替换
  RegExp exp = RegExp(
      r'<TURNSTILE_(SITE_KEY|ACTION|CDATA|THEME|SIZE|LANGUAGE|RETRY|RETRY_INTERVAL|REFRESH_EXPIRED|REFRESH_TIMEOUT|READY|BEFORE_INTERACTIVE|AFTER_INTERACTIVE|TYPE|TOKEN_RECEIVED|ERROR|TOKEN_EXPIRED|CREATED)>');

  ///为了更直观，我们直接将source提出去到trunstile.html文件中去，然后在代码中把它加载进来，当然你得知道其路径。,因为这里是耗时操作，所以我们使用了 async ,返回也是Future<String>
  ByteData bytes =
      await rootBundle.load("packages/flutter_turnstile/data/trunstile.html");

  // 将 ByteData 转换为 Uint8List
  Uint8List uint8list = bytes.buffer.asUint8List();

  ///替换之后的text
  String? replacedText = utf8.decode(uint8list).replaceAllMapped(exp, (match) {
    switch (match.group(1)) {
      case 'SITE_KEY':
        return siteKey;
      case 'ACTION':
        return action ?? '';
      case 'CDATA':
        return cData ?? '';
      case 'THEME':
        return options.theme.name;
      case 'SIZE':
        return options.size.name;
      case 'LANGUAGE':
        return options.language;
      case 'RETRY':
        return options.retryAutomatically ? 'auto' : 'never';
      case 'RETRY_INTERVAL':
        return options.retryInterval.inMilliseconds.toString();
      case 'REFRESH_EXPIRED':
        return options.refreshExpired.name;
      case 'REFRESH_TIMEOUT':
        return options.refreshTimeout.name;
      case 'READY':
        return onTurnstileReady;
      case 'BEFORE_INTERACTIVE':
        return onBeforeInteractive;
      case 'AFTER_INTERACTIVE':
        return onAfterInteractive;
      case 'TYPE':
        return type;
      case 'TOKEN_RECEIVED':
        return onTokenReceived;
      case 'ERROR':
        return onTurnstileError;
      case 'TOKEN_EXPIRED':
        return onTokenExpired;
      case 'CREATED':
        return onWidgetCreated;
      default:
        return match.group(0) ?? "";
    }
  });

  return replacedText;
}