import boto3
from botocore.exceptions import ClientError
from datetime import datetime

lambdas = []

with open("lambdas-list.txt", "r") as f:
    lines = f.readlines()
    for line in lines:
        lambdas.append(line.rstrip("\n"))

for lambda_name in lambdas:
    log_g_name = "/aws/lambda/" + lambda_name

    # had to add the region here to make it work
    client = boto3.client("logs", region_name="us-east-1")

    try:
        ## For the latest
        stream_response = client.describe_log_streams(
            logGroupName=log_g_name,
            orderBy="LastEventTime",
            descending=True,
            limit=1,
        )

        if len(stream_response['logStreams']) == 0:
            print(f"{lambda_name} no recorded events")
        else:
            log_stream_name = stream_response['logStreams'][0]['logStreamName']

            # Get the latest log event from the log stream
            response = client.get_log_events(
                logGroupName=log_g_name,
                logStreamName=log_stream_name,
                limit=1,
                startFromHead=False
            )
            #pprint(response)

            if len(response['events']) == 0:
                timestamp = stream_response['logStreams'][0]['creationTime']
                latest_event_time = datetime.fromtimestamp(timestamp / 1000.0).strftime('%Y-%m-%d %H:%M:%S')

            else:
                latest_event = response['events'][0]
                timestamp = latest_event['timestamp']

                # Convert the timestamp to a human-readable format
                latest_event_time = datetime.fromtimestamp(timestamp / 1000.0).strftime('%Y-%m-%d %H:%M:%S')

            print(f"{lambda_name} {latest_event_time}")

    except ClientError as e:
        if e.response['Error']['Code'] == 'ResourceNotFoundException':
            print(f"{lambda_name} log group {log_g_name} does not exist, no recorded events")
        else:
            raise e