create.js

import uuid from "uuid";
import * as dynamoDbLib from "./libs/dynamodb-lib";
import { success, failure } from "./libs/response-lib.js";

export async function main(event, context, callback){
 // Request body is passed in as a JSON embedded string in 'event.body'
 const data = JSON.parse(event.body);
 console.log("Event: ", event)
 console.log("Context: ", context)
 const params = {
 TableName: "notes",
 // 'Item' contains the attributes of the item to be created // - 'userId': user identities are federated through the
 // Cognito Identity Pool, we will use the identity id
 // as the user id of the authenticated user
 // - 'noteId': a unique uuid
 // - 'content': parsed from request body
 // - 'attachment': parsed from request body
 // - 'createdAt': current Unix timestamp
 Item: {
 userId: event.requestContext.identity.cognitoIdentityId,
 noteId: uuid.v1(),
 content: data.content,
 attachment: data.attachment,
 createdAt: new Date().getTime()
 }
 };

 try {
 await dynamoDbLib.call("put", params);
 callback(null, success(params.Item));
 } catch(e){
 console.log(e);
 callback(null, failure({status: false})); 
 }
}