import json
import boto3


def lambda_handler(event, context):
    res = ''
    s3 = boto3.client('s3')

    if(len(event) == 0):
        with open('index.html','r') as file:
            return file.read()
    elif(event['command'] == 'list' ):
        s3 = boto3.resource('s3')
        bucketNames = []
        for bucket in s3.buckets.all():
            bucketNames.append(bucket.name)
        return ', '.join(bucketNames)
    elif event['command'] == 'create':
        s3.create_bucket(Bucket=event['bucketName'],CreateBucketConfiguration={'LocationConstraint' : 'eu-west-3'})
    elif event['command'] == 'delete':
        s3.delete_bucket(Bucket=event['bucketName'])
    elif event['command'] == 'dir_list':
        my_bucket = boto3.resource('s3').Bucket(event['bucketName'])
        objects = []
        for el in my_bucket.objects.all():
            objects.append(el.key)
        return objects
    elif event['command'] == 'deleteFile':
        #s3 = boto3.resource('s3')
        #s3.delete_object(Bucket=event['bucketName'],Key=event['fileName'])
        s3client = boto3.client('s3')
        s3client.delete_object(Bucket=event['bucketName'],Key=event['filename'])
    elif event['command'] == 'upload':
    #    s3.meta.client.upload_file(event['path'], event['bucketName'], event['fileName'] )
        s3 = boto3.resource('s3')
        s3.Bucket(event['bucketName']).put_object(Key=event['fileName'], Body=event['fileData'])
    elif event['command'] == 'download':
        #s3.meta.client.upload_file( event['bucketName'], event['fileName'], event['path'] )
        s3.download_file(event['bucketName'], event['fileName'],event['fileName'])
    elif 1==1:
        pass

    return res