"""Common functions for type validation."""
from .constants import schema
from .constants import transcoding_types


def get_transcoding_type(s3_object):
    """Get transcoding and file types of s3 object.

    Args:
        s3_object (dict): Body of S3 object.
    Returns:
        tuple: transcoding type and file types

    """
    mime_file_type = s3_object.get('ContentType').split(';')[0]
    transcoding_type = transcoding_types.UNKNOWN_TRANSCODING_TYPE

    if mime_file_type in transcoding_types.AUDIO_MIME_TYPES:
        transcoding_type = transcoding_types.AUDIO_TRANSCODING_TYPE
    elif mime_file_type in transcoding_types.IMAGE_MIME_TYPES:
        transcoding_type = transcoding_types.IMAGE_TRANSCODING_TYPE

    file_type = transcoding_types.FILE_TYPES.get(
        mime_file_type, transcoding_types.UNKNOWN_FILE_TYPE)
    return transcoding_type, file_type


def validate_config(config):
    """Validate that an asset object has a configuration."""
    return schema.Asset().load(config)


def validate_lambda_event(event):
    """Validate that the lambda object."""
    return schema.LambdaEvent().load(event)


def validate_encoding_route_lambda_event(event):
    """Validate that the lambda object."""
    return schema.EncodingRouteEvent().load(event)