mirror of
https://github.com/tcsenpai/swingmusic.git
synced 2025-06-06 19:25:34 +00:00
93de3d2f0c
+ delete older migrations ... oops + change migratrions from "migrations" to "dbmigrations" + restructure migrations, order them based on release version + add a utils/decorators.py file with a coroutine decorator
120 lines
2.9 KiB
Python
120 lines
2.9 KiB
Python
"""
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Helper functions for use with the SQLite database.
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"""
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from pprint import pprint
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import sqlite3
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from sqlite3 import Connection, Cursor
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import time
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from typing import Optional
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from app.models import Album, Playlist, Track
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from app.settings import Db
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def tuple_to_track(track: tuple):
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"""
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Takes a tuple and returns a Track object
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"""
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return Track(*track[1:]) # rowid is removed from the tuple
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def tuples_to_tracks(tracks: list[tuple]):
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"""
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Takes a list of tuples and returns a generator that yields a Track object for each tuple
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"""
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for track in tracks:
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yield tuple_to_track(track)
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def tuple_to_album(album: tuple):
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"""
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Takes a tuple and returns an Album object
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"""
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return Album(*album[1:]) # rowid is removed from the tuple
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def tuples_to_albums(albums: list[tuple]):
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"""
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Takes a list of tuples and returns a generator that yields an album object for each tuple
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"""
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for album in albums:
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yield tuple_to_album(album)
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def tuple_to_playlist(playlist: tuple):
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"""
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Takes a tuple and returns a Playlist object
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"""
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pprint(playlist)
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return Playlist(*playlist)
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def tuples_to_playlists(playlists: list[tuple]):
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"""
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Takes a list of tuples and returns a list of Playlist objects
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"""
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for playlist in playlists:
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yield tuple_to_playlist(playlist)
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class SQLiteManager:
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"""
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This is a context manager that handles the connection and cursor
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for you. It also commits and closes the connection when you're done.
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"""
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def __init__(
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self,
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conn: Optional[Connection] = None,
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userdata_db=False,
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test_db_path: str = None,
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) -> None:
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"""
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When a connection is passed in, don't close the connection, because it's
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a connection to the search database [in memory db].
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"""
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self.conn = conn
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self.CLOSE_CONN = True
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self.userdata_db = userdata_db
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self.test_db_path = test_db_path
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if conn:
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self.conn = conn
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self.CLOSE_CONN = False
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def __enter__(self) -> Cursor:
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if self.conn is not None:
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return self.conn.cursor()
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if self.test_db_path:
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db_path = self.test_db_path
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else:
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db_path = Db.get_app_db_path()
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if self.userdata_db:
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db_path = Db.get_userdata_db_path()
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self.conn = sqlite3.connect(
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db_path,
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timeout=15,
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)
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return self.conn.cursor()
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def __exit__(self, exc_type, exc_value, exc_traceback):
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trial_count = 0
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while trial_count < 10:
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try:
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self.conn.commit()
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if self.CLOSE_CONN:
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self.conn.close()
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return
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except sqlite3.OperationalError:
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trial_count += 1
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time.sleep(3)
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self.conn.close()
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