var aws = require('aws-sdk');
var ses = new aws.SES({region: 'us-east-1'});
var iam = new aws.IAM({apiVersion: '2010-05-08'});

exports.handler = function (event, context) {
    console.log("Incoming: ", event);
    var message = "";

    function AwsListGroupsFunction(err, data)
    {
        if (err) console.log(err, err.stack); // an error occurred
        else
        {
            //Get AWS Groups from AWS Account
            var dataCount = data.Groups.length-1;
            for (var key in data.Groups)
            {
                message+= data.Groups[key].GroupName
                // Then get all users associated to the GroupName
                var groupParams = { GroupName: data.Groups[key].GroupName};
                iam.getGroup(groupParams, AwsGetGroupFunction); // end of else for if iam.getGroup

                if (key != dataCount)
                    message += ', ';
            }
        }
        return message;
    };

    function AwsGetGroupFunction(err, data) {
        if (err) console.log(err, err.stack); // an error occurred
        else{
            // successful response
            message+= "<br/>";
            for (var userKey in data.Users) {
                message += data.Users[userKey].UserName + ' and PasswordLastUsed: ' + data.Users[userKey].PasswordLastUsed + ' , ';
            }

        }
        return message;
    };

    function SendEmail(message){
        // Do this
        var destinationAddress = "myEmail@email.com";
        let subject = "My Subject";
        let emailBody =
            "My Body" +
            "<br/><br /><b>Message:</b><br/>"  + message;

        console.log(emailBody);

        var eParams = {
            Destination: {
                ToAddresses: [destinationAddress]
            },
            Message: {
                Body: {
                    Html: {
                        Data: emailBody
                    }
                },
                Subject: {
                    Data: subject
                }
            },
            Source: "sourceemail@email.com"
        };

        console.log('===SENDING EMAIL===');
        var email = ses.sendEmail(eParams, function(err, data)
        {
            if(err) console.log(err);
            else {
                console.log("===EMAIL SENT===");
                console.log(data);
                console.log("EMAIL CODE END");
                console.log('EMAIL: ', email);
                context.succeed(event);
            }
        });
    }


    // This is the only function called which calls other functions
    var params = {};
    iam.listGroups(params, AwsListGroupsFunction);

};