feat: 完善数据库备份管理与版本读取 (#6450)

app/runtime/version.py

@@ -0,0 +1,42 @@
+"""当前 MoviePilot 部署的产品版本读取入口。"""
+
+from pathlib import Path
+
+from app.foundation.environment import is_frozen, is_windows
+from app.runtime.log import logger
+from app.runtime.settings import get_runtime_setting
+from version import APP_VERSION as _APP_VERSION
+from version import FRONTEND_VERSION as _FRONTEND_VERSION
+
+
+def get_app_version() -> str:
+    """返回当前后端构建的发布版本。"""
+    return str(_APP_VERSION)
+
+
+def _read_version_file(path: Path) -> str | None:
+    """读取版本文件，文件缺失、内容为空或读取失败时返回空值。"""
+    try:
+        version = path.read_text(encoding="utf-8", errors="replace").strip()
+        return version or None
+    except OSError as error:
+        if path.exists():
+            logger.debug(f"加载版本文件 {path} 出错：{error}")
+        return None
+
+
+def get_frontend_version(*, fallback_to_declared: bool = True) -> str | None:
+    """返回当前部署的前端资源版本，并可关闭发布声明回退。"""
+    if is_frozen() and is_windows():
+        version_file = (
+            Path(get_runtime_setting("CONFIG_PATH")).parent
+            / "nginx"
+            / "html"
+            / "version.txt"
+        )
+    else:
+        version_file = Path(get_runtime_setting("FRONTEND_PATH")) / "version.txt"
+    installed_version = _read_version_file(version_file)
+    if installed_version or not fallback_to_declared:
+        return installed_version
+    return str(_FRONTEND_VERSION)