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supysonic/managers/folder.py
2014-03-02 18:31:32 +01:00

133 lines
3.7 KiB
Python

# coding: utf-8
# This file is part of Supysonic.
#
# Supysonic is a Python implementation of the Subsonic server API.
# Copyright (C) 2013, 2014 Alban 'spl0k' Féron
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os.path, uuid
from db import Folder, Artist, session
class FolderManager:
SUCCESS = 0
INVALID_ID = 1
NAME_EXISTS = 2
INVALID_PATH = 3
PATH_EXISTS = 4
NO_SUCH_FOLDER = 5
@staticmethod
def get(uid):
if isinstance(uid, basestring):
try:
uid = uuid.UUID(uid)
except:
return FolderManager.INVALID_ID, None
elif type(uid) is uuid.UUID:
pass
else:
return FolderManager.INVALID_ID, None
folder = Folder.query.get(uid)
if not folder:
return FolderManager.NO_SUCH_FOLDER, None
return FolderManager.SUCCESS, folder
@staticmethod
def add(name, path):
if Folder.query.filter(Folder.name == name and Folder.root == True).first():
return FolderManager.NAME_EXISTS
path = os.path.abspath(path)
if not os.path.isdir(path):
return FolderManager.INVALID_PATH
folder = Folder.query.filter(Folder.path == path).first()
if folder:
return FolderManager.PATH_EXISTS
folder = Folder(root = True, name = name, path = path)
session.add(folder)
session.commit()
return FolderManager.SUCCESS
@staticmethod
def delete(uid):
status, folder = FolderManager.get(uid)
if status != FolderManager.SUCCESS:
return status
if not folder.root:
return FolderManager.NO_SUCH_FOLDER
# delete associated tracks and prune empty albums/artists
for artist in Artist.query.all():
for album in artist.albums[:]:
for track in filter(lambda t: t.root_folder.id == folder.id, album.tracks):
album.tracks.remove(track)
session.delete(track)
if len(album.tracks) == 0:
artist.albums.remove(album)
session.delete(album)
if len(artist.albums) == 0:
session.delete(artist)
def cleanup_folder(folder):
for f in folder.children:
cleanup_folder(f)
session.delete(folder)
cleanup_folder(folder)
session.commit()
return FolderManager.SUCCESS
@staticmethod
def delete_by_name(name):
folder = Folder.query.filter(Folder.name == name and Folder.root == True).first()
if not folder:
return FolderManager.NO_SUCH_FOLDER
return FolderManager.delete(folder.id)
@staticmethod
def scan(uid, scanner, progress_callback = None):
status, folder = FolderManager.get(uid)
if status != FolderManager.SUCCESS:
return status
scanner.scan(folder, progress_callback)
scanner.prune(folder)
scanner.check_cover_art(folder)
return FolderManager.SUCCESS
@staticmethod
def error_str(err):
if err == FolderManager.SUCCESS:
return 'No error'
elif err == FolderManager.INVALID_ID:
return 'Invalid folder id'
elif err == FolderManager.NAME_EXISTS:
return 'There is already a folder with that name. Please pick another one.'
elif err == FolderManager.INVALID_PATH:
return "The path doesn't exists or isn't a directory"
elif err == FolderManager.PATH_EXISTS:
return 'This path is already registered'
elif err == FolderManager.NO_SUCH_FOLDER:
return 'No such folder'
return 'Unknown error'