add db versioning

PyTaiko.py

@@ -17,6 +17,7 @@ from raylib.defines import (
 from libs.audio import audio
 from libs.global_data import PlayerNum
 from libs.screen import Screen
+from libs.song_hash import DB_VERSION
 from libs.tja import TJAParser
 from libs.utils import (
     force_dedicated_gpu,
@@ -118,6 +119,13 @@ def create_song_db():
     """Create the scores database if it doesn't exist"""
     with sqlite3.connect('scores.db') as con:
         cursor = con.cursor()
+
+        cursor.execute('''
+        SELECT name FROM sqlite_master
+        WHERE type='table' AND name='Scores'
+        ''')
+        table_exists = cursor.fetchone() is not None
+
         create_table_query = '''
         CREATE TABLE IF NOT EXISTS Scores (
             hash TEXT PRIMARY KEY,
@@ -134,8 +142,14 @@ def create_song_db():
         );
         '''
         cursor.execute(create_table_query)
+
+        if not table_exists:
+            cursor.execute(f'PRAGMA user_version = {DB_VERSION}')
+            logger.info(f"Scores database created successfully with version {DB_VERSION}")
+        else:
+            logger.info("Scores database already exists")
+
         con.commit()
-        logger.info("Scores database created successfully")
 
 def update_camera_for_window_size(camera, virtual_width, virtual_height):
     """Update camera zoom, offset, scale, and rotation to maintain aspect ratio"""

libs/song_hash.py

@@ -12,6 +12,7 @@ from libs.utils import global_data
 from libs.config import get_config
 
 logger = logging.getLogger(__name__)
+DB_VERSION = 1
 
 def diff_hashes_object_hook(obj):
     if "diff_hashes" in obj:
@@ -25,6 +26,18 @@ class DiffHashesDecoder(json.JSONDecoder):
     def __init__(self, *args, **kwargs):
         super().__init__(object_hook=diff_hashes_object_hook, *args, **kwargs)
 
+def get_db_version():
+    with sqlite3.connect('scores.db') as con:
+        cursor = con.cursor()
+        cursor.execute('PRAGMA user_version')
+        version = cursor.fetchone()[0]
+        return version
+
+def update_db_version():
+    with sqlite3.connect('scores.db') as con:
+        cursor = con.cursor()
+        cursor.execute(f'PRAGMA user_version = {DB_VERSION}')
+
 def read_tjap3_score(input_file: Path):
     """Read a TJAPlayer3 score.ini file and return the scores and clears."""
     score_ini = configparser.ConfigParser()
@@ -70,12 +83,12 @@ def build_song_hashes(output_dir=Path("cache")):
     if output_path.exists():
         with open(output_path, "r", encoding="utf-8") as f:
             song_hashes = json.load(f, cls=DiffHashesDecoder)
-            '''
+            if get_db_version() != DB_VERSION:
+                update_db_version()
                 for hash in song_hashes:
                     entry = song_hashes[hash][0]
                     for diff in entry["diff_hashes"]:
                         db_updates.append((entry["diff_hashes"][diff], entry["title"]["en"], entry["title"].get("ja", ""), int(diff)))
-            '''
 
     if index_path.exists():
         with open(index_path, "r", encoding="utf-8") as f: