Move server code to this repo (#95)

move server code to this repo

app/db/sqlite/utils.py

@@ -0,0 +1,93 @@
+"""
+Helper functions for use with the SQLite database.
+"""
+
+import sqlite3
+from sqlite3 import Connection, Cursor
+
+from app.models import Album, Playlist, Track
+from app.settings import APP_DB_PATH, USERDATA_DB_PATH
+
+
+def tuple_to_track(track: tuple):
+    """
+    Takes a tuple and returns a Track object
+    """
+    return Track(*track[1:])  # rowid is removed from the tuple
+
+
+def tuples_to_tracks(tracks: list[tuple]):
+    """
+    Takes a list of tuples and returns a generator that yields a Track object for each tuple
+    """
+    for track in tracks:
+        yield tuple_to_track(track)
+
+
+def tuple_to_album(album: tuple):
+    """
+    Takes a tuple and returns an Album object
+    """
+    return Album(*album[1:])  # rowid is removed from the tuple
+
+
+def tuples_to_albums(albums: list[tuple]):
+    """
+    Takes a list of tuples and returns a generator that yields an album object for each tuple
+    """
+    for album in albums:
+        yield tuple_to_album(album)
+
+
+def tuple_to_playlist(playlist: tuple):
+    """
+    Takes a tuple and returns a Playlist object
+    """
+    return Playlist(*playlist)
+
+
+def tuples_to_playlists(playlists: list[tuple]):
+    """
+    Takes a list of tuples and returns a list of Playlist objects
+    """
+    for playlist in playlists:
+        yield tuple_to_playlist(playlist)
+
+
+class SQLiteManager:
+    """
+    This is a context manager that handles the connection and cursor
+    for you. It also commits and closes the connection when you're done.
+    """
+
+    def __init__(self, conn: Connection | None = None, userdata_db=False) -> None:
+        """
+        When a connection is passed in, don't close the connection, because it's
+        a connection to the search database [in memory db].
+        """
+        self.conn: Connection | None = conn
+        self.CLOSE_CONN = True
+        self.userdata_db = userdata_db
+
+        if conn:
+            self.conn = conn
+            self.CLOSE_CONN = False
+
+    def __enter__(self) -> Cursor:
+        if self.conn is not None:
+            return self.conn.cursor()
+
+        db_path = APP_DB_PATH
+
+        if self.userdata_db:
+            db_path = USERDATA_DB_PATH
+
+        self.conn = sqlite3.connect(db_path)
+        return self.conn.cursor()
+
+    def __exit__(self, exc_type, exc_value, exc_traceback):
+        if self.conn:
+            self.conn.commit()
+
+            if self.CLOSE_CONN:
+                self.conn.close()