import os
import logging

try:
    from config import APP_NAME as ROOT_LOGGER_NAME
except ImportError:
    ROOT_LOGGER_NAME = 'root'
logger = logging.getLogger(ROOT_LOGGER_NAME).getChild(__name__)

# make module usable without discid dependency
try:
    import discid
except ModuleNotFoundError:
    logger.warning("Python module discid not installed")
except OSError:
    logger.exception("You might install python3-libdiscid")

KEY_ALBUM = 'album'
KEY_APERTURE = 'aperture'
KEY_ARTIST = 'artist'
KEY_BITRATE = 'bitrate'
KEY_CAMERA = 'camera'
KEY_DURATION = 'duration'
KEY_EXPOSURE_PROGRAM = 'exposure_program'
KEY_EXPOSURE_TIME = 'exposure_time'
KEY_FLASH = 'flash'
KEY_FOCAL_LENGTH = 'focal_length'
KEY_GENRE = 'genre'
KEY_GPS = 'gps'
KEY_HEIGHT = 'height'
KEY_ISO = 'iso'
KEY_ORIENTATION = 'orientation'
KEY_RATIO = 'ratio'
KEY_SIZE = 'size'
KEY_TIME = 'time'   # USE time.localtime(value) or datetime.fromtimestamp(value) to convert the timestamp
KEY_TIME_IS_SUBSTITUTION = 'tm_is_subst'
KEY_TITLE = 'title'
KEY_TRACK = 'track'
KEY_WIDTH = 'width'
KEY_YEAR = 'year'

FILETYPE_AUDIO = 'audio'
FILETYPE_IMAGE = 'image'
FILETYPE_VIDEO = 'video'
FILETYPE_DISC = 'disc'

CALLBACK_CDDB_CHOICE = 0
CALLBACK_MAN_INPUT = 1

EXTENTIONS_AUDIO = ['.mp3', ]
EXTENTIONS_IMAGE = ['.jpg', '.jpeg', '.jpe', '.png', '.tif', '.tiff', '.gif', ]
EXTENTIONS_VIDEO = ['.avi', '.mpg', '.mpeg', '.mpe', '.mov', '.qt', '.mp4', '.webm', '.ogv', '.flv', '.3gp', ]
PREFIX_DISC = '/dev/'


def get_filetype(full_path):
    ext = os.path.splitext(full_path.lower())[1]
    if ext in EXTENTIONS_AUDIO:
        return FILETYPE_AUDIO
    elif ext in EXTENTIONS_IMAGE:
        return FILETYPE_IMAGE
    elif ext in EXTENTIONS_VIDEO:
        return FILETYPE_VIDEO
    elif full_path.startswith(PREFIX_DISC):
        return FILETYPE_DISC


def get_disc_device():
    return discid.get_default_device()