feat: add telegram mini app dashboard

src/GmRelay.Web/Components/App.razor

@@ -13,6 +13,7 @@
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet" />
     <link rel="stylesheet" href="@Assets["app.css"]" />
     <link rel="stylesheet" href="@Assets["GmRelay.Web.styles.css"]" />
+    <script src="https://telegram.org/js/telegram-web-app.js"></script>
     <ImportMap />
     <link rel="icon" type="image/png" href="favicon.png" />
     <HeadOutlet @rendermode="InteractiveServer" />
@@ -23,6 +24,14 @@
     <ReconnectModal />
     <script src="@Assets["_framework/blazor.web.js"]"></script>
     <script>
+        (function () {
+            if (window.Telegram && window.Telegram.WebApp && window.Telegram.WebApp.initData) {
+                var webApp = window.Telegram.WebApp;
+                document.body.classList.add('telegram-mini-app');
+                webApp.ready();
+            }
+        })();
+
         window.loadTelegramWidget = function (botUsername, authUrl) {
             var container = document.getElementById('telegram-login-container');
             if (!container) return;
@@ -36,6 +45,32 @@
             script.setAttribute('data-request-access', 'write');
             container.appendChild(script);
         };
+
+        window.authenticateTelegramMiniApp = async function (authUrl, redirectUrl) {
+            if (!window.Telegram || !window.Telegram.WebApp || !window.Telegram.WebApp.initData) {
+                return false;
+            }
+
+            var webApp = window.Telegram.WebApp;
+            document.body.classList.add('telegram-mini-app');
+            webApp.ready();
+            webApp.expand();
+
+            var response = await fetch(authUrl, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'same-origin',
+                body: JSON.stringify({ initData: webApp.initData })
+            });
+
+            if (!response.ok) {
+                return false;
+            }
+
+            var payload = await response.json();
+            window.location.href = payload.redirectUrl || redirectUrl || '/';
+            return true;
+        };
     </script>
 </body>