refactor: database initialize checker

core/database/utils.py

@@ -0,0 +1,28 @@
+from pathlib import Path
+
+from PySide6.QtCore import QSysInfo, QUrl
+from sqlalchemy import Engine
+from sqlalchemy import create_engine as sa_create_engine
+from sqlalchemy.pool import NullPool, Pool
+
+
+def db_path_to_sqlite_url(file: Path) -> QUrl:
+    kernelType = QSysInfo.kernelType()
+
+    # the slash count varies depending on the kernel
+    # https://docs.sqlalchemy.org/en/20/core/engines.html#sqlite
+    uri = file.resolve().as_uri()
+    if kernelType == "winnt":
+        return QUrl(uri.replace("file://", "sqlite://"))
+    else:
+        return QUrl(uri.replace("file://", "sqlite:///"))
+
+
+def sqlite_url_to_db_path(url: str) -> Path:
+    db_file_url = url.replace("sqlite://", "file://")
+    return Path(QUrl(db_file_url).toLocalFile()).resolve()
+
+
+def create_engine(_url: str | QUrl, pool: type[Pool] = NullPool) -> Engine:
+    url = _url.toString() if isinstance(_url, QUrl) else _url
+    return sa_create_engine(url, poolclass=pool)