new tasks.GlueStartJobRun(this, 'Task', {
  glueJobName: 'my-glue-job',
  arguments: sfn.TaskInput.fromObject({
    key: 'value',
  }),
  timeout: Duration.minutes(30),
  notifyDelayAfter: Duration.minutes(5),
});

declare const fn: lambda.Function;
new tasks.LambdaInvoke(this, 'Invoke with callback', {
  lambdaFunction: fn,
  integrationPattern: sfn.IntegrationPattern.WAIT_FOR_TASK_TOKEN,
  payload: sfn.TaskInput.fromObject({
    token: sfn.JsonPath.taskToken,
    input: sfn.JsonPath.stringAt('$.someField'),
  }),
});

declare const fn: lambda.Function;
new tasks.LambdaInvoke(this, 'Invoke with empty object as payload', {
  lambdaFunction: fn,
  payload: sfn.TaskInput.fromObject({}),
});

// use the output of fn as input
new tasks.LambdaInvoke(this, 'Invoke with payload field in the state input', {
  lambdaFunction: fn,
  payload: sfn.TaskInput.fromJsonPathAt('$.Payload'),
});

import * as events from '@aws-cdk/aws-events';

const myEventBus = new events.EventBus(this, 'EventBus', {
  eventBusName: 'MyEventBus1',
});

new tasks.EventBridgePutEvents(this, 'Send an event to EventBridge', {
  entries: [{
    detail: sfn.TaskInput.fromObject({
      Message: 'Hello from Step Functions!',
    }),
    eventBus: myEventBus,
    detailType: 'MessageFromStepFunctions',
    source: 'step.functions',
  }],
});

const queue = new sqs.Queue(this, 'Queue');

// Use a field from the execution data as message.
const task1 = new tasks.SqsSendMessage(this, 'Send1', {
  queue,
  messageBody: sfn.TaskInput.fromJsonPathAt('$.message'),
});

// Combine a field from the execution data with
// a literal object.
const task2 = new tasks.SqsSendMessage(this, 'Send2', {
  queue,
  messageBody: sfn.TaskInput.fromObject({
    field1: 'somedata',
    field2: sfn.JsonPath.stringAt('$.field2'),
  }),
});

const convertToSeconds = new tasks.EvaluateExpression(this, 'Convert to seconds', {
  expression: '$.waitMilliseconds / 1000',
  resultPath: '$.waitSeconds',
});

const createMessage = new tasks.EvaluateExpression(this, 'Create message', {
  // Note: this is a string inside a string.
  expression: '`Now waiting ${$.waitSeconds} seconds...`',
  runtime: lambda.Runtime.NODEJS_14_X,
  resultPath: '$.message',
});

const publishMessage = new tasks.SnsPublish(this, 'Publish message', {
  topic: new sns.Topic(this, 'cool-topic'),
  message: sfn.TaskInput.fromJsonPathAt('$.message'),
  resultPath: '$.sns',
});

const wait = new sfn.Wait(this, 'Wait', {
  time: sfn.WaitTime.secondsPath('$.waitSeconds'),
});

new sfn.StateMachine(this, 'StateMachine', {
  definition: convertToSeconds
    .next(createMessage)
    .next(publishMessage)
    .next(wait),
});

const convertToSeconds = new tasks.EvaluateExpression(this, 'Convert to seconds', {
  expression: '$.waitMilliseconds / 1000',
  resultPath: '$.waitSeconds',
});

const createMessage = new tasks.EvaluateExpression(this, 'Create message', {
  // Note: this is a string inside a string.
  expression: '`Now waiting ${$.waitSeconds} seconds...`',
  runtime: lambda.Runtime.NODEJS_14_X,
  resultPath: '$.message',
});

const publishMessage = new tasks.SnsPublish(this, 'Publish message', {
  topic: new sns.Topic(this, 'cool-topic'),
  message: sfn.TaskInput.fromJsonPathAt('$.message'),
  resultPath: '$.sns',
});

const wait = new sfn.Wait(this, 'Wait', {
  time: sfn.WaitTime.secondsPath('$.waitSeconds'),
});

new sfn.StateMachine(this, 'StateMachine', {
  definition: convertToSeconds
    .next(createMessage)
    .next(publishMessage)
    .next(wait),
});

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as stepfunctions_tasks from '@aws-cdk/aws-stepfunctions-tasks';

const dynamoProjectionExpression = new stepfunctions_tasks.DynamoProjectionExpression();

import * as lambda from '@aws-cdk/aws-lambda';

declare const submitLambda: lambda.Function;
declare const getStatusLambda: lambda.Function;

const submitJob = new tasks.LambdaInvoke(this, 'Submit Job', {
  lambdaFunction: submitLambda,
  // Lambda's result is in the attribute `Payload`
  outputPath: '$.Payload',
});

const waitX = new sfn.Wait(this, 'Wait X Seconds', {
  time: sfn.WaitTime.secondsPath('$.waitSeconds'),
});

const getStatus = new tasks.LambdaInvoke(this, 'Get Job Status', {
  lambdaFunction: getStatusLambda,
  // Pass just the field named "guid" into the Lambda, put the
  // Lambda's result in a field called "status" in the response
  inputPath: '$.guid',
  outputPath: '$.Payload',
});

const jobFailed = new sfn.Fail(this, 'Job Failed', {
  cause: 'AWS Batch Job Failed',
  error: 'DescribeJob returned FAILED',
});

const finalStatus = new tasks.LambdaInvoke(this, 'Get Final Job Status', {
  lambdaFunction: getStatusLambda,
  // Use "guid" field as input
  inputPath: '$.guid',
  outputPath: '$.Payload',
});

const definition = submitJob
  .next(waitX)
  .next(getStatus)
  .next(new sfn.Choice(this, 'Job Complete?')
    // Look at the "status" field
    .when(sfn.Condition.stringEquals('$.status', 'FAILED'), jobFailed)
    .when(sfn.Condition.stringEquals('$.status', 'SUCCEEDED'), finalStatus)
    .otherwise(waitX));

new sfn.StateMachine(this, 'StateMachine', {
  definition,
  timeout: Duration.minutes(5),
});