init

backend/app/prefs.py

@@ -0,0 +1,104 @@
+"""UI-настройки, сохраняемые в .env.json (раздел "ui").
+
+Хранятся на сервере → значение общее для всех клиентов и переживает перезапуск.
+"""
+from __future__ import annotations
+
+import json
+import os
+
+from fastapi import APIRouter, HTTPException, Request
+
+from .auth import COOKIE_NAME, auth_manager, require_role
+
+DEFAULT_UI = {"live_transcode": False, "archive_transcode": False}
+DEFAULT_OPT = {"single_main_stream": True, "mode_16plus": False}   # серверная политика Live view
+
+
+def _path() -> str:
+    return os.environ.get("NVR_SETTINGS", ".env.json")
+
+
+def load_ui() -> dict:
+    try:
+        with open(_path(), "r", encoding="utf-8") as fh:
+            data = json.load(fh)
+        ui = data.get("ui") or {}
+    except (OSError, json.JSONDecodeError):
+        ui = {}
+    return {**DEFAULT_UI, **{k: ui[k] for k in DEFAULT_UI if k in ui}}
+
+
+def save_ui(patch: dict) -> dict:
+    path = _path()
+    try:
+        with open(path, "r", encoding="utf-8") as fh:
+            data = json.load(fh)
+    except (OSError, json.JSONDecodeError):
+        data = {}
+    merged = load_ui()
+    for k in DEFAULT_UI:
+        if k in patch:
+            merged[k] = bool(patch[k])
+    data["ui"] = merged
+    with open(path, "w", encoding="utf-8") as fh:
+        json.dump(data, fh, ensure_ascii=False, indent=2)
+    return merged
+
+
+def load_optimization() -> dict:
+    try:
+        with open(_path(), "r", encoding="utf-8") as fh:
+            data = json.load(fh)
+        opt = data.get("optimization") or {}
+    except (OSError, json.JSONDecodeError):
+        opt = {}
+    return {**DEFAULT_OPT, **{k: bool(opt[k]) for k in DEFAULT_OPT if k in opt}}
+
+
+def save_optimization(patch: dict) -> dict:
+    path = _path()
+    try:
+        with open(path, "r", encoding="utf-8") as fh:
+            data = json.load(fh)
+    except (OSError, json.JSONDecodeError):
+        data = {}
+    merged = load_optimization()
+    for k in DEFAULT_OPT:
+        if k in patch:
+            merged[k] = bool(patch[k])
+    data["optimization"] = merged
+    with open(path, "w", encoding="utf-8") as fh:
+        json.dump(data, fh, ensure_ascii=False, indent=2)
+    return merged
+
+
+router = APIRouter(prefix="/api", tags=["settings"])
+
+
+@router.get("/settings")
+async def get_settings() -> dict:
+    return load_ui()
+
+
+@router.post("/settings")
+async def update_settings(request: Request) -> dict:
+    body = await request.json()
+    return save_ui(body)
+
+
+@router.get("/optimization")
+async def get_optimization() -> dict:
+    """Политика Live view; читают все авторизованные клиенты."""
+    return load_optimization()
+
+
+@router.post("/optimization")
+async def update_optimization(request: Request) -> dict:
+    """Менять может только суперадмин и только с подтверждением пароля."""
+    require_role(request, "superadmin")
+    body = await request.json()
+    if not auth_manager.verify_token_password(request.cookies.get(COOKIE_NAME),
+                                              body.get("password", "")):
+        raise HTTPException(403, "неверный пароль")
+    return save_optimization(body)