def __init__(self, tag_dict):
"""Create a Submission object from a dict of tags.
Args:
tag_dict: a dictionary as returned by Playlist.get_current_tags(),
i.e., containing 'Title', 'Artist', etc.
"""
if not all(tag_dict[x] for x in ['Title', 'Artist', 'Length']):
raise self.RequiredDataMissing()
elif tag_dict['Length'] < TRACK_MIN_LENGTH:
raise self.TrackTooShort()
self.path = None
self.length = tag_dict['Length']
self.start_time = int(time.time())
self.param = {
'm': '',
'r': '',
'o': SOURCE_USER,
'l': str(self.length),
'i': str(self.start_time),
'n': util.ensure_utf8(tag_dict['Track']),
't': util.ensure_utf8(tag_dict['Title']),
'b': util.ensure_utf8(tag_dict['Album']),
'a': util.ensure_utf8(tag_dict['Artist']),
}
def load_from_file(cls, path):
with open(path) as f:
try:
param = json.load(f)
except ValueError:
return None
else:
# TODO: could it be possible to get json to give us str objects?
param = dict((k, util.ensure_utf8(param[k])) for k in param)
if set(param.keys()) == set('mrolintba'):
obj = cls.__new__(cls)
obj.path = path
obj.param = param
obj.length = int(param['l'])
obj.start_time = int(param['i'])
return obj
else:
return None