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// 
// This file is licensed under the Apache License, Version 2.0 (the "License").
// You may not use this file except in compliance with the License. A copy of
// the License is located at
// 
// http://aws.amazon.com/apache2.0/
// 
// This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.

// snippet-sourcedescription:[In this example, the Lambda function checks whether the user's response to a challenge matches the expected response. The answerCorrect parameter is set to true if the user's response matches the expected response.]
// snippet-service:[cognito-idp]
// snippet-keyword:[JavaScript]
// snippet-sourcesyntax:[javascript]
// snippet-keyword:[Amazon Cognito]
// snippet-keyword:[Code Sample]
// snippet-keyword:[lambda_trigger]
// snippet-sourcetype:[full-example]
// snippet-sourcedate:[2019-01-30]
// snippet-sourceauthor:[AWS]

// snippet-start:[cognito.javascript.lambda-trigger.auth-challenge-verify]
exports.handler = (event, context, callback) => {
    if (event.request.privateChallengeParameters.answer == event.request.challengeAnswer) {
        event.response.answerCorrect = true;
    } else {
        event.response.answerCorrect = false;
    }

    // Return to Amazon Cognito
    callback(null, event);
}
// snippet-end:[cognito.javascript.lambda-trigger.auth-challenge-verify]