lambda_function.py

import json
import os

def lambda_handler(event, context):
    err_resp = {
        'statusCode': '400',
        'headers': {
            'Access-Control-Allow-Origin': '*',
            'Access-Control-Allow-Methods': 'GET, POST, OPTIONS'
        }
    }
    
    if not 'body' in event:
        resp = {
            'statusCode': 200,
            'headers': {
                'Access-Control-Allow-Origin': '*',
                'Access-Control-Allow-Methods': 'GET, POST, OPTIONS'
            }
        }
        return resp
        
    
    ev = json.loads(event['body'])
    if not (('password' in ev) and ('origin' in ev)):
        return err_resp
    
    pa = ev['password']
    ori = ev['origin']
    
    if pa != os.environ['password']:
        return err_resp
        
    url = os.environ['index'] if ori == 'index' else os.environ['join']
    
    response = {
        'statusCode': 200,
        'body': url,
        'headers': {
            'Access-Control-Allow-Origin': '*',
            'Access-Control-Allow-Methods': 'GET, POST, OPTIONS'
        }
    }
     
    return response