import json
import boto3

client = boto3.client('sns')

#lambda function to send sms from API Gateway REST call
#event["queryStringParameters"] is dict with query string
#API Gateway enforces these

def lambda_handler(event, context):
    recipient = event["queryStringParameters"]['recipient']
    message = event["queryStringParameters"]['message']
    message_type = event["queryStringParameters"]['message_type']


    if (message_type=='sms'):

        response = client.publish(
            Message=json.dumps({'default': json.dumps(message)}),
            PhoneNumber=recipient,
            MessageStructure='json'
        )
    else:
        return {
        'statusCode': 400,
        'body': json.dumps('Bad message_type.')

    }
    #response = None

    body = 'Queued ' + str(message_type) + ' message to: ' + str(recipient) +" With message contents: '" + str(message) + "' Response: '" + str(response) + "'"

    return {
        'statusCode': 200,
        'body': json.dumps(body)

    }