306 lines
10 KiB
Python
306 lines
10 KiB
Python
import os
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import json
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import sqlite3
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import logging
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from hashlib import sha512
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from contextlib import closing
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logging = logging.getLogger("database")
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keys_in_table = ["title", "album", "artist", "type", "size"]
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def dict_factory(cursor, row):
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d = {}
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for idx, col in enumerate(cursor.description):
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d[col[0]] = row[idx]
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return d
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class NotFoundError(Exception):
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pass
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class DuplicateRootException(Exception):
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pass
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def readcursor(func):
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"""
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Provides a cursor to the wrapped method as the first arg
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"""
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def wrapped(*args, **kwargs):
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self = args[0]
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with closing(self.db.cursor()) as cursor:
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return func(*[self, cursor], *args[1:], **kwargs)
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return wrapped
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class PysonicDatabase(object):
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def __init__(self, path):
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self.sqlite_opts = dict(check_same_thread=False)
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self.path = path
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self.db = None
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self.open()
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self.migrate()
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def open(self):
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self.db = sqlite3.connect(self.path, **self.sqlite_opts)
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self.db.row_factory = dict_factory
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def migrate(self):
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# Create db
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queries = ["""CREATE TABLE 'libraries' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT,
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'name' TEXT,
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'path' TEXT UNIQUE);""",
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"""CREATE TABLE 'dirs' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT,
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'library' INTEGER,
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'parent' INTEGER,
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'name' TEXT,
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UNIQUE(parent, name)
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)""",
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"""CREATE TABLE 'artists' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT,
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'libraryid' INTEGER,
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'dir' INTEGER UNIQUE,
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'name' TEXT)""",
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"""CREATE TABLE 'albums' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT,
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'artistid' INTEGER,
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'coverid' INTEGER,
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'dir' INTEGER,
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'name' TEXT,
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UNIQUE (artistid, dir));""",
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"""CREATE TABLE 'songs' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT,
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'albumid' BOOLEAN,
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'file' TEXT UNIQUE, -- path from the library root
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'size' INTEGER NOT NULL DEFAULT -1,
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'title' TEXT NOT NULL,
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'lastscan' INTEGER NOT NULL DEFAULT -1,
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'format' TEXT,
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'length' INTEGER,
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'bitrate' INTEGER,
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'track' INTEGER,
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'year' INTEGER
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)""",
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"""CREATE TABLE 'covers' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT,
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'type' TEXT,
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'size' TEXT,
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'path' TEXT UNIQUE);""",
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"""CREATE TABLE 'users' (
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'id' INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
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'username' TEXT UNIQUE NOT NULL,
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'password' TEXT NOT NULL,
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'admin' BOOLEAN DEFAULT 0,
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'email' TEXT)""",
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"""CREATE TABLE 'stars' (
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'userid' INTEGER,
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'songid' INTEGER,
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primary key ('userid', 'songid'))""",
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"""CREATE TABLE 'meta' (
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'key' TEXT PRIMARY KEY NOT NULL,
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'value' TEXT);""",
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"""INSERT INTO meta VALUES ('db_version', '1');"""]
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with closing(self.db.cursor()) as cursor:
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cursor.execute("SELECT * FROM sqlite_master WHERE type='table' AND name='meta'")
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# Initialize DB
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if len(cursor.fetchall()) == 0:
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logging.warning("Initializing database")
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for query in queries:
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print(query)
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cursor.execute(query)
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cursor.execute("COMMIT")
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else:
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# Migrate if old db exists
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# cursor.execute("""UPDATE meta SET value=? WHERE key="db_version";""", (str(version), ))
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# logging.warning("db schema is version {}".format(version))
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pass
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def add_root(self, path, name="Library"):
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"""
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Add a new library root. Returns the root ID or raises on collision
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:param path: normalized absolute path to add to the library
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:type path: str:
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:return: int
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:raises: sqlite3.IntegrityError
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"""
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assert path.startswith("/")
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with closing(self.db.cursor()) as cursor:
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try:
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cursor.execute("INSERT INTO libraries ('name', 'path') VALUES (?, ?)", (name, path, ))
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cursor.execute("COMMIT")
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return cursor.lastrowid
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except sqlite3.IntegrityError:
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raise DuplicateRootException("Root '{}' already exists".format(path))
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@readcursor
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def get_libraries(self, cursor):
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libs = []
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cursor.execute("SELECT * FROM libraries")
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for row in cursor:
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libs.append(row)
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return libs
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@readcursor
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def get_artists(self, cursor, id=None, dirid=None, sortby=None, order=None):
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assert order in ["asc", "desc", None]
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artists = []
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q = "SELECT * FROM artists"
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params = []
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conditions = []
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if id:
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conditions.append("id = ?")
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params.append(id)
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if dirid:
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conditions.append("dir = ?")
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params.append(dirid)
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if conditions:
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q += " WHERE " + " AND ".join(conditions)
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if sortby:
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q += " ORDER BY {} {}".format(sortby, order.upper() if order else "ASC")
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print(q)
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print(params)
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cursor.execute(q, params)
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for row in cursor:
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artists.append(row)
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return artists
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@readcursor
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def get_albums(self, cursor, id=None, artist=None, sortby=None, order=None):
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assert order in ["asc", "desc", None]
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albums = []
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q = "SELECT * FROM albums"
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params = []
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conditions = []
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if id:
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conditions.append("id = ?")
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params.append(id)
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if artist:
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conditions.append("artistid = ?")
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params.append(artist)
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if conditions:
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q += " WHERE " + " AND ".join(conditions)
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if sortby:
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q += " ORDER BY {} {}".format(sortby, order.upper() if order else "ASC")
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cursor.execute(q, params)
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for row in cursor:
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albums.append(row)
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return albums
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@readcursor
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def get_song(self, cursor, songid):
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for item in cursor.execute("SELECT * FROM songs WHERE id=?", (songid, )):
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return item
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return None
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# @readcursor
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# def get_artist_by_dir(self, cursor, dirid):
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# for row in cursor.execute("""
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# SELECT artists.*
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# FROM dirs
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# INNER JOIN artists
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# ON artists.dir = dirs.id
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# WHERE dirs.id=?""", (dirid, )):
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# return [row]
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# return []
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@readcursor
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def get_cover(self, cursor, coverid):
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cover = None
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for cover in cursor.execute("SELECT * FROM covers WHERE id = ?", (coverid, )):
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return cover
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@readcursor
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def get_musicdir(self, cursor, dirid):
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"""
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The world is a harsh place.
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Again, this bullshit exists only to serve subsonic clients. Given a directory ID it returns a dict containing:
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- the directory itself
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- its parent
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- its child dirs
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- its child media
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that's a lie, it's a tuple and it's full of BS. read the code
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"""
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# find directory
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dirinfo = None
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for dirinfo in cursor.execute("SELECT * FROM dirs WHERE id = ?", (dirid, )):
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pass
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assert dirinfo
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ret = None
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# see if it matches the artists or albums table
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artist = None
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for artist in cursor.execute("SELECT * FROM artists WHERE dir = ?", (dirid, )):
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pass
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# if artist:
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# get child albums
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if artist:
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ret = ("artist", dirinfo, artist)
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children = []
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for album in cursor.execute("SELECT * FROM albums WHERE artistid = ?", (artist["id"], )):
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children.append(("album", album))
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ret[2]['children'] = children
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return ret
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# else if album:
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# get child tracks
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album = None
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for album in cursor.execute("SELECT * FROM albums WHERE dir = ?", (dirid, )):
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pass
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if album:
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ret = ("album", dirinfo, album)
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artist_info = cursor.execute("SELECT * FROM artists WHERE id = ?", (album["artistid"], )).fetchall()[0]
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children = []
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for song in cursor.execute("SELECT * FROM songs WHERE albumid = ?", (album["id"], )):
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song["_artist"] = artist_info
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children.append(("song", song))
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ret[2]['children'] = children
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return ret
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@readcursor
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def add_user(self, cursor, username, password, is_admin=False):
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cursor.execute("INSERT INTO users (username, password, admin) VALUES (?, ?, ?)",
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(username, self.hashit(password), is_admin))
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cursor.execute("COMMIT")
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@readcursor
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def update_user(self, cursor, username, password, is_admin=False):
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cursor.execute("UPDATE users SET password=?, admin=? WHERE username=?;",
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(self.hashit(password), is_admin, username))
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cursor.execute("COMMIT")
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@readcursor
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def get_user(self, cursor, user):
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try:
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column = "id" if type(user) is int else "username"
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return cursor.execute("SELECT * FROM users WHERE {}=?;".format(column), (user, )).fetchall()[0]
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except IndexError:
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raise NotFoundError("User doesn't exist")
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def hashit(self, unicode_string):
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return sha512(unicode_string.encode('UTF-8')).hexdigest()
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