index.js

const rookout = require('rookout/lambda');

exports.handler = rookout.wrap((event, context, callback) => {
    let name = "you";
    let city = 'World';
    let time = 'day';
    let day = '';
    let responseCode = 200;
    console.log("request: " + JSON.stringify(event));
    
    if (event.queryStringParameters !== null && event.queryStringParameters !== undefined) {
        if (event.queryStringParameters.name !== undefined && 
            event.queryStringParameters.name !== null && 
            event.queryStringParameters.name !== "") {
            console.log("Received name: " + event.queryStringParameters.name);
            name = event.queryStringParameters.name;
        }
    }
    
    if (event.pathParameters !== null && event.pathParameters !== undefined) {
        if (event.pathParameters.proxy !== undefined && 
            event.pathParameters.proxy !== null && 
            event.pathParameters.proxy !== "") {
            console.log("Received proxy: " + event.pathParameters.proxy);
            city = event.pathParameters.proxy;
        }
    }
    
    if (event.headers !== null && event.headers !== undefined) {
        if (event.headers['day'] !== undefined && event.headers['day'] !== null && event.headers['day'] !== "") {
            console.log("Received day: " + event.headers.day);
            day = event.headers.day;
        }
    }
    
    if (event.body !== null && event.body !== undefined) {
        let body = JSON.parse(event.body)
        if (body.time) 
            time = body.time;
    }
 
    let greeting = 'Good ' + time + ', ' + name + ' of ' + city + '. ';
    if (day) greeting += 'Happy ' + day + '!';

    var responseBody = {
        message: greeting,
        input: event
    };
    
    var response = {
        statusCode: responseCode,
        headers: {
            "x-custom-header" : "my custom header value"
        },
        body: JSON.stringify(responseBody)
    };
    console.log("response: " + JSON.stringify(response))
    callback(null, response);
});