index.js

const AWS = require('aws-sdk');

const dynamo = new AWS.DynamoDB.DocumentClient();

const tableName = process.env.TABLE_NAME;

/**
 * Demonstrates a simple HTTP endpoint using API Gateway. You have full
 * access to the request and response payload, including headers and
 * status code.
 *
 * To scan a DynamoDB table, make a GET request with the TableName as a
 * query string parameter. To put, update, or delete an item, make a POST,
 * PUT, or DELETE request respectively, passing in the payload to the
 * DynamoDB API as a JSON body.
 */
exports.handler = async (event, context) => {
  //console.log('Received event:', JSON.stringify(event, null, 2));

  let body;
  let statusCode = '200';
  const headers = {
    'Content-Type': 'application/json',
  };

  try {
    switch (event.httpMethod) {
      // case 'DELETE':
      //     body = await dynamo.delete(JSON.parse(event.body)).promise();
      //     break;
      case 'GET':
        const workList = await dynamo.scan({ TableName: tableName }).promise();
        body = await orderArray(workList.Items);
        break;
      // case 'POST':
      //     body = await dynamo.put(JSON.parse(event.body)).promise();
      //     break;
      // case 'PUT':
      //     body = await dynamo.update(JSON.parse(event.body)).promise();
      //     break;
      default:
        throw new Error(`Unsupported method "${event.httpMethod}"`);
    }
  } catch (err) {
    statusCode = '400';
    body = err.message;
  } finally {
    body = JSON.stringify(body);
  }

  return {
    statusCode,
    body,
    headers,
  };
};

async function orderArray(array) {
  return array.sort((a, b) => {
    return a['order'] - b['order'];
  });
}