2021-08-21 16:47:33 -04:00
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# Copyright 2021 (c) Anna Schumaker.
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#
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# Table: playlists
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# +------ ---+-----------+------+------+
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# | playlistid | plstateid | name | sort |
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# +-------- -+-----------+------+------+
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#
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# Index: playlist_index
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# +--------------------+
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# | name -> playlistid |
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# +--------------------+
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from gi.repository import GObject
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from .sql import execute
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from . import objects
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from . import state
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from . import track
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Default = [ "Collection", "Favorites", "New Tracks",
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"Previous", "Queued Tracks" ]
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class Playlist(objects.Tag):
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def do_get_column(self, column):
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return execute(f"SELECT {column} FROM playlists "
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"WHERE playlistid=?", [ self.rowid ])
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@GObject.Property
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def playlist_state(self):
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return state.Table.get(self.get_column("plstateid"))
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class PlaylistTable(objects.Table):
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def __init__(self):
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objects.Table.__init__(self, "playlists", Playlist)
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def do_create(self):
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execute("CREATE TABLE IF NOT EXISTS playlists "
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"(playlistid INTEGER PRIMARY KEY, "
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" plstateid INTEGER NOT NULL, "
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" name TEXT UNIQUE, "
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" sort TEXT, "
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" FOREIGN KEY (plstateid) REFERENCES playlist_states(plstateid))")
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execute("CREATE INDEX IF NOT EXISTS playlist_index "
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"ON playlists(name)")
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def do_insert(self, name, loop=False):
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plstate = state.Table.insert(random=False, loop=loop)
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return execute("INSERT INTO playlists (plstateid, name, sort) "
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"VALUES (?, ?, ?)", (plstate.rowid, name, name.casefold()))
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def do_delete(self, playlist):
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Map.delete_playlist(playlist)
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TempMap.delete_playlist(playlist)
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return execute("DELETE FROM playlists WHERE playlistid=?", [ int(playlist) ])
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def do_get(self, rowid):
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return execute("SELECT playlistid FROM playlists "
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"WHERE playlistid=?", [ rowid ])
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def do_lookup(self, name):
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return execute("SELECT playlistid FROM playlists "
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"WHERE name=?", [ name ])
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def create_default_playlists(self):
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for name in Default:
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if (plist := self.lookup(name)) != None:
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continue
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self.do_insert(name, name == "Collection")
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class PlaylistMap(objects.Map):
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def __init__(self, temp=False):
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name = "playlist_map" if temp==False else "temp_playlist_map"
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self.temporary = temp
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objects.Map.__init__(self, name, Playlist, track.Track)
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self.lookup_tracks = self.lookup_rhs
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self.lookup_playlists = self.lookup_lhs
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def do_create(self):
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temp = "" if self.temporary == False else "TEMPORARY"
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execute(f"CREATE {temp} TABLE IF NOT EXISTS {self.map_name} "
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"(playlistid INTEGER, "
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" trackid INTEGER, "
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" FOREIGN KEY(playlistid) REFERENCES playlists(playlistid), "
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" FOREIGN KEY(trackid) REFERENCES tracks(trackid), "
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" UNIQUE(playlistid, trackid))")
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def do_insert(self, playlist, track):
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execute(f"INSERT INTO {self.map_name} (playlistid, trackid) "
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"VALUES (?, ?)", [ int(playlist), int(track) ])
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def do_delete(self, playlist, track):
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return execute(f"DELETE FROM {self.map_name} "
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"WHERE playlistid=? AND trackid=?",
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[ int(playlist), int(track) ])
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def do_lookup_rhs(self, playlist):
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return execute(f"SELECT trackid FROM {self.map_name} "
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"WHERE playlistid=?", [ int(playlist) ])
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def do_lookup_lhs(self, track):
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return execute(f"SELECT playlistid FROM {self.map_name} "
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"WHERE trackid=?", [ int(track) ])
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def delete_track(self, track):
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for playlist in self.lookup_playlists(track):
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self.delete(playlist, track)
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def delete_playlist(self, playlist):
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for track in self.lookup_tracks(playlist):
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self.delete(playlist, track)
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Table = PlaylistTable()
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Map = PlaylistMap(temp=False)
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TempMap = PlaylistMap(temp=True)
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