const { Client, logger } = require("camunda-external-task-client-js");

// configuration for the Client:
//  - 'baseUrl': url to the Workflow Engine
//  - 'logger': utility to automatically log important events
const config = { baseUrl: "http://localhost:8080/engine-rest", use: logger };

// create a Client instance with custom configuration
const client = new Client(config);

// susbscribe to the topic: 'creditScoreChecker'
client.subscribe("creditScoreChecker", async function({ task, taskService }) {
  // Put your business logic
  // complete the task
  await taskService.complete(task);
});

// Susbscribe to the topic: 'topicName'
client.subscribe("topicName", async function({ task, taskService }) {
  // Put your business logic
  // Complete the task
  await taskService.complete(task);
});

// Susbscribe to the topic: 'topicName'
client.subscribe("topicName", async function({ task, taskService }) {
  // Put your business logic
  // Handle a Failure
  await taskService.handleFailure(task, {
    errorMessage: "some failure message",
    errorDetails: "some details",
    retries: 1,
    retryTimeout: 1000
  });

});

// Susbscribe to the topic: 'topicName'
client.subscribe("topicName", async function({ task, taskService }) {
  // Put your business logic

  // Create some variables
  const variables = new Variables().set('date', new Date());

  // Handle a BPMN Failure
  await taskService.handleBpmnError(task, "BPMNError_Code", "Error message", variables);
});

// Susbscribe to the topic: 'topicName'
client.subscribe("topicName", async function({ task, taskService }) {
  // Put your business logic
  // Extend the lock time
  await taskService.extendLock(task, 5000);
});

// Susbscribe to the topic: 'topicName'
client.subscribe("topicName", async function({ task, taskService }) {
  // Put your business logic
  // Unlock the task
  await taskService.unlock(task);
});

const { Variables } = require("camunda-external-task-client-js");

client.subscribe("topicName", async function({ task, taskService }) {
  // get the process variable 'score'
  const score = task.variables.get("score");

  // set a process variable 'winning'
  const processVariables = new Variables();
  processVariables.set("winning", score > 5);

  // set a local variable 'winningDate'
  const localVariables = new Variables();
  localVariables.set("winningDate", new Date());

  // complete the task
  await taskService.complete(task, processVariables, localVariables);
});