generateJWT function

Implementation

String generateJWT(AuthJwtModel jwtAuth) {
  try {
    // Parse header if provided
    Map<String, dynamic> headerMap = {};
    if (jwtAuth.header.isNotEmpty) {
      try {
        headerMap = json.decode(jwtAuth.header) as Map<String, dynamic>;
      } catch (e) {
        // If header parsing fails, use empty header
        headerMap = {};
      }
    }

    // Parse payload if provided
    Map<String, dynamic> payloadMap = {};
    if (jwtAuth.payload.isNotEmpty) {
      try {
        payloadMap = json.decode(jwtAuth.payload) as Map<String, dynamic>;
      } catch (e) {
        // If payload parsing fails, use empty payload
        payloadMap = {};
      }
    }

    // Add issued at time if not present
    if (!payloadMap.containsKey('iat')) {
      payloadMap['iat'] = DateTime.now().millisecondsSinceEpoch ~/ 1000;
    }
    final jwt = JWT(payloadMap, header: headerMap);

    final key = _createKey(
      jwtAuth.secret,
      jwtAuth.algorithm,
      jwtAuth.isSecretBase64Encoded,
      jwtAuth.privateKey,
    );
    final token = jwt.sign(
      key,
      algorithm: JWTAlgorithm.fromName(jwtAuth.algorithm),
    );

    return token;
  } catch (e) {
    throw Exception('Failed to generate JSON Wweb Token: $e');
  }
}