Windows auto update

utils/update_check.py

@@ -30,6 +30,7 @@ _state: Dict[str, Any] = {
     "latest": None,
     "html_url": None,
     "error": None,
+    "assets": [],
 }
 
 
@@ -162,6 +163,7 @@ def run_check(current_version: str) -> None:
         tag = (cache.get("tag_name") or "").strip()
         if tag:
             _apply_release_tag(tag, cache.get("html_url") or "", current_version)
+            _state["assets"] = cache.get("assets") or []
             return
         err = cache.get("last_error")
         _state["error"] = (
@@ -181,6 +183,7 @@ def run_check(current_version: str) -> None:
             tag = (cache.get("tag_name") or "").strip()
             url = (cache.get("html_url") or "").strip() or RELEASES_PAGE_URL
             _apply_release_tag(tag, url, current_version)
+            _state["assets"] = cache.get("assets") or []
             if new_etag:
                 cache["etag"] = new_etag
             _save_cache(cache_path, cache)
@@ -200,6 +203,13 @@ def run_check(current_version: str) -> None:
             cache["etag"] = new_etag
         cache["tag_name"] = tag
         cache["html_url"] = html_url
+        assets = [
+            {"name": a.get("name", ""), "url": a.get("browser_download_url", ""), "digest": a.get("digest", "")}
+            for a in (data.get("assets") or [])
+            if a.get("name") and a.get("browser_download_url")
+        ]
+        _state["assets"] = assets
+        cache["assets"] = assets
         cache.pop("last_error", None)
         _save_cache(cache_path, cache)
     except (HTTPError, URLError, OSError, TimeoutError, ValueError, json.JSONDecodeError) as e:
@@ -221,3 +231,45 @@ def run_check(current_version: str) -> None:
 def get_status() -> Dict[str, Any]:
     """Снимок состояния после run_check (для подписей в настройках)."""
     return dict(_state)
+
+
+def get_update_asset(exe_path: Path) -> Optional[Tuple[str, str]]:
+    assets = _state.get("assets") or []
+    if not assets:
+        return None
+
+    # Try SHA256 match against release asset digests
+    try:
+        import hashlib
+        h = hashlib.sha256()
+        with open(exe_path, "rb") as f:
+            while True:
+                chunk = f.read(65536)
+                if not chunk:
+                    break
+                h.update(chunk)
+        exe_sha = h.hexdigest().lower()
+        for a in assets:
+            d = (a.get("digest") or "").lower()
+            if d.startswith("sha256:") and d[7:] == exe_sha:
+                return a["url"], a["name"]
+    except Exception:
+        pass
+
+    # Fallback
+    import struct
+    is_64 = struct.calcsize("P") * 8 == 64
+    try:
+        is_modern = sys.getwindowsversion().major >= 10
+    except Exception:
+        is_modern = True
+    if is_modern:
+        name = "TgWsProxy_windows.exe"
+    elif is_64:
+        name = "TgWsProxy_windows_7_64bit.exe"
+    else:
+        name = "TgWsProxy_windows_7_32bit.exe"
+    for a in assets:
+        if a.get("name") == name:
+            return a["url"], a["name"]
+    return None