music-kraken-core/src/music_kraken/utils/database.py

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import sqlite3
import os
import logging
import json
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import requests
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class Database:
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def __init__(self, path_to_db: str, db_structure: str, db_structure_fallback: str, logger: logging.Logger, reset_anyways: bool = False):
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self.logger = logger
self.path_to_db = path_to_db
self.connection = sqlite3.connect(self.path_to_db)
self.cursor = self.connection.cursor()
# init database
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self.init_db(database_structure=db_structure, database_structure_fallback=db_structure_fallback, reset_anyways=reset_anyways)
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def init_db(self, database_structure: str, database_structure_fallback: str, reset_anyways: bool = False):
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# check if db exists
exists = True
try:
query = 'SELECT * FROM track;'
self.cursor.execute(query)
_ = self.cursor.fetchall()
except sqlite3.OperationalError:
exists = False
if not exists:
self.logger.info("Database does not exist yet.")
if reset_anyways or not exists:
# reset the database if reset_anyways is true or if an error has been thrown previously.
self.logger.info("Creating/Reseting Database.")
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if not os.path.exists(database_structure):
self.logger.info("database structure file doesn't exist yet, fetching from github")
r = requests.get(database_structure_fallback)
with open(database_structure, "w") as f:
f.write(r.text)
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# read the file
with open(database_structure, "r") as database_structure_file:
query = database_structure_file.read()
self.cursor.executescript(query)
self.connection.commit()
def add_artist(
self,
musicbrainz_artistid: str,
artist: str = None
):
query = "INSERT OR REPLACE INTO artist (id, name) VALUES (?, ?);"
values = musicbrainz_artistid, artist
self.cursor.execute(query, values)
self.connection.commit()
def add_release_group(
self,
musicbrainz_releasegroupid: str,
artist_ids: list,
albumartist: str = None,
albumsort: int = None,
musicbrainz_albumtype: str = None,
compilation: str = None,
album_artist_id: str = None
):
# add adjacency
adjacency_list = []
for artist_id in artist_ids:
adjacency_list.append((artist_id, musicbrainz_releasegroupid))
adjacency_values = tuple(adjacency_list)
adjacency_query = "INSERT OR REPLACE INTO artist_release_group (artist_id, release_group_id) VALUES (?, ?);"
self.cursor.executemany(adjacency_query, adjacency_values)
self.connection.commit()
# add release group
query = "INSERT OR REPLACE INTO release_group (id, albumartist, albumsort, musicbrainz_albumtype, compilation, album_artist_id) VALUES (?, ?, ?, ?, ?, ?);"
values = musicbrainz_releasegroupid, albumartist, albumsort, musicbrainz_albumtype, compilation, album_artist_id
self.cursor.execute(query, values)
self.connection.commit()
def add_release(
self,
musicbrainz_albumid: str,
release_group_id: str,
title: str = None,
copyright_: str = None,
album_status: str = None,
language: str = None,
year: str = None,
date: str = None,
country: str = None,
barcode: str = None
):
query = "INSERT OR REPLACE INTO release_ (id, release_group_id, title, copyright, album_status, language, year, date, country, barcode) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"
values = musicbrainz_albumid, release_group_id, title, copyright_, album_status, language, year, date, country, barcode
self.cursor.execute(query, values)
self.connection.commit()
def add_track(
self,
musicbrainz_releasetrackid: str,
musicbrainz_albumid: str,
feature_aritsts: list,
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tracknumber: str = None,
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track: str = None,
isrc: str = None
):
# add adjacency
adjacency_list = []
for artist_id in feature_aritsts:
adjacency_list.append((artist_id, musicbrainz_releasetrackid))
adjacency_values = tuple(adjacency_list)
adjacency_query = "INSERT OR REPLACE INTO artist_track (artist_id, track_id) VALUES (?, ?);"
self.cursor.executemany(adjacency_query, adjacency_values)
self.connection.commit()
# add track
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query = "INSERT OR REPLACE INTO track (id, release_id, track, isrc, tracknumber) VALUES (?, ?, ?, ?, ?);"
values = musicbrainz_releasetrackid, musicbrainz_albumid, track, isrc, tracknumber
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self.cursor.execute(query, values)
self.connection.commit()
@staticmethod
def get_custom_track_query(custom_where: list) -> str:
where_args = [
"track.release_id == release_.id",
"release_group.id == release_.release_group_id",
"artist_track.artist_id == artist.id",
"artist_track.track_id == track.id",
"source.track_id == track.id"
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]
where_args.extend(custom_where)
where_arg = " AND ".join(where_args)
query = f"""
SELECT DISTINCT
json_object(
'artists', json_group_array(
(
SELECT DISTINCT json_object(
'id', artist.id,
'name', artist.name
)
)
),
'source', json_group_array(
(
SELECT DISTINCT json_object(
'src', source.src,
'url', source.url,
'valid', source.valid
)
)
),
'id', track.id,
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'tracknumber', track.tracknumber,
'titlesort ', track.tracknumber,
'musicbrainz_releasetrackid', track.id,
'musicbrainz_albumid', release_.id,
'title', track.track,
'isrc', track.isrc,
'album', release_.title,
'copyright', release_.copyright,
'album_status', release_.album_status,
'language', release_.language,
'year', release_.year,
'date', release_.date,
'country', release_.country,
'barcode', release_.barcode,
'albumartist', release_group.albumartist,
'albumsort', release_group.albumsort,
'musicbrainz_albumtype', release_group.musicbrainz_albumtype,
'compilation', release_group.compilation,
'album_artist_id', release_group.album_artist_id,
'path', track.path,
'file', track.file,
'genre', track.genre,
'url', track.url,
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'src', track.src,
'lyrics', track.lyrics
)
FROM track, release_, release_group, artist, artist_track, source
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WHERE
{where_arg}
GROUP BY track.id;
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"""
return query
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def get_custom_track(self, custom_where: list):
query = Database.get_custom_track_query(custom_where=custom_where)
return [json.loads(i[0]) for i in self.cursor.execute(query)]
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def get_track_metadata(self, musicbrainz_releasetrackid: str):
# this would be vulnerable if musicbrainz_releasetrackid would be user input
resulting_tracks = self.get_custom_track([f'track.id == "{musicbrainz_releasetrackid}"'])
if len(resulting_tracks) != 1:
return -1
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return resulting_tracks[0]
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def get_tracks_to_download(self):
return self.get_custom_track(['track.downloaded == 0'])
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def get_tracks_without_src(self):
return self.get_custom_track(["(track.url IS NULL OR track.src IS NULL)"])
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def get_tracks_without_isrc(self):
return self.get_custom_track(["track.isrc IS NULL"])
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def get_tracks_without_filepath(self):
return self.get_custom_track(["(track.file IS NULL OR track.path IS NULL OR track.genre IS NULL)"])
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def get_tracks_for_lyrics(self):
return self.get_custom_track(["track.lyrics IS NULL"])
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def add_lyrics(self, track_id: str, lyrics: str):
query = f"""
UPDATE track
SET lyrics = ?
WHERE '{track_id}' == id;
"""
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self.cursor.execute(query, (str(lyrics), ))
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self.connection.commit()
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def update_download_status(self, track_id: str):
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query = f"UPDATE track SET downloaded = 1, WHERE '{track_id}' == id;"
self.cursor.execute(query)
self.connection.commit()
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def set_download_data(self, track_id: str, url: str, src: str):
query = f"""
UPDATE track
SET url = ?,
src = ?
WHERE '{track_id}' == id;
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"""
self.cursor.execute(query, (url, src))
self.connection.commit()
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def set_filepath(self, track_id: str, file: str, path: str, genre: str):
query = f"""
UPDATE track
SET file = ?,
path = ?,
genre = ?
WHERE '{track_id}' == id;
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"""
self.cursor.execute(query, (file, path, genre))
self.connection.commit()
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if __name__ == "__main__":
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import tempfile
temp_folder = "music-downloader"
temp_dir = os.path.join(tempfile.gettempdir(), temp_folder)
if not os.path.exists(temp_dir):
os.mkdir(temp_dir)
temp_dir = get_temp_dir()
DATABASE_FILE = "metadata.db"
DATABASE_STRUCTURE_FILE = "database_structure.sql"
db_path = os.path.join(TEMP_DIR, DATABASE_FILE)
logging.basicConfig()
logger = logging.getLogger("database")
logger.setLevel(logging.DEBUG)
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database = Database(os.path.join(temp_dir, "metadata.db"), os.path.join(temp_dir, "database_structure.sql"), logger,
reset_anyways=True)