import boto3
from botocore.exceptions import ClientError
from yt_dlp_stream_to_s3.config import (
    AWS_ENDPOINT_URL,
    AWS_SECRET_ACCESS_KEY,
    AWS_ACCESS_KEY_ID,
)
from yt_dlp_stream_to_s3.errors import YtDlpStreamToS3ConnectionError

creds = dict(
    endpoint_url=AWS_ENDPOINT_URL,
    aws_secret_access_key=AWS_SECRET_ACCESS_KEY,
    aws_access_key_id=AWS_ACCESS_KEY_ID,
)


try:
    s3_client = boto3.client("s3", **creds)

except Exception:
    raise YtDlpStreamToS3ConnectionError(
        f"Could not connect to S3 service {AWS_ENDPOINT_URL}"
    )


def get_file_size(bucket_name: str, key: str) -> str:
    s3_resource = boto3.resource("s3", **creds)
    return s3_resource.Object(bucket_name, key).content_length / 1_000_000


def create_presigned_url(bucket_name, object_name, expiration=3600):
    return s3_client.generate_presigned_url(
        "get_object",
        Params={"Bucket": bucket_name, "Key": object_name},
        ExpiresIn=expiration,
    )