Introduce checkmate screen

Show checkmate screen, once the server sends the 'gameEnded' message.

Additionally, show an icon that lets users copy the passphrase to the
clipboard.

lib/api/websocket_message.dart

@@ -4,7 +4,8 @@ enum MessageType {
   boardState,
   move,
   invalidMove,
-  colorDetermined;
+  colorDetermined,
+  gameEnded;
 
   String toJson() => name;
   static MessageType fromJson(String json) => values.byName(json);
@@ -82,6 +83,16 @@ class ApiWebsocketMessage {
           squareInCheck: json['squareInCheck'],
           playerColor: null,
         );
+      case MessageType.gameEnded:
+        ret = ApiWebsocketMessage(
+          type: type,
+          move: null,
+          turnColor: null,
+          reason: json['reason'],
+          position: null,
+          squareInCheck: null,
+          playerColor: null,
+        );
     }
     return ret;
   }

lib/connection/ws_connection.dart

@@ -1,5 +1,7 @@
 import 'dart:convert';
 import 'dart:developer';
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
 import 'package:mchess/api/move.dart';
 import 'package:mchess/api/websocket_message.dart';
 import 'package:mchess/chess_bloc/chess_bloc.dart';
@@ -7,7 +9,9 @@ import 'package:mchess/chess_bloc/chess_events.dart';
 import 'package:mchess/api/register.dart';
 import 'package:mchess/chess_bloc/chess_position.dart';
 import 'package:mchess/connection_cubit/connection_cubit.dart';
+import 'package:mchess/utils/chess_router.dart';
 import 'package:mchess/utils/chess_utils.dart';
+import 'package:mchess/utils/config.dart' as config;
 import 'package:web_socket_channel/web_socket_channel.dart';
 
 class ServerConnection {
@@ -38,9 +42,7 @@ class ServerConnection {
   }
 
   void connect(String playerID, lobbyID, String? passphrase) {
-    String url;
+    channel = WebSocketChannel.connect(Uri.parse(config.getWebsocketURL()));
-    url = 'wss://chess.sw-gross.de:9999/api/ws';
-    channel = WebSocketChannel.connect(Uri.parse(url));
 
     send(
       jsonEncode(
@@ -82,6 +84,8 @@ class ServerConnection {
 
       case MessageType.invalidMove:
         handleInvalidMoveMessage(apiMessage);
+      case MessageType.gameEnded:
+        handleGameEndedMessage(apiMessage);
     }
   }
 
@@ -125,4 +129,29 @@ class ServerConnection {
       ),
     );
   }
+
+  void handleGameEndedMessage(ApiWebsocketMessage apiMessage) {
+    showDialog(
+      context: navigatorKey.currentContext!,
+      builder: (context) {
+        String msg = '';
+        if (apiMessage.reason == 'whiteIsCheckmated') {
+          msg = 'Black won! White is checkmated';
+        } else if (apiMessage.reason == 'blackIsCheckmated') {
+          msg = 'White won! Black is checkmated';
+        }
+        return AlertDialog(
+            title: const Text('Game ended'),
+            content: Text(msg),
+            actions: <Widget>[
+              TextButton(
+                child: const Text('Home'),
+                onPressed: () {
+                  navigatorKey.currentContext!.goNamed('lobbySelector');
+                },
+              ),
+            ]);
+      },
+    );
+  }
 }

lib/pages/host_game.dart

@@ -1,6 +1,7 @@
 import 'dart:developer';
 
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:go_router/go_router.dart';
 import 'package:http/http.dart';
@@ -10,6 +11,7 @@ import 'package:http/http.dart' as http;
 import 'dart:convert';
 
 import 'package:mchess/pages/chess_game.dart';
+import 'package:mchess/utils/config.dart' as config;
 
 class HostGameWidget extends StatefulWidget {
   const HostGameWidget({super.key});
@@ -80,10 +82,22 @@ class _HostGameWidgetState extends State<HostGameWidget> {
                           color: Theme.of(context).colorScheme.primary),
                     ),
                     const SizedBox(height: 25),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
                         SelectableText(
                           passphrase,
                           style: const TextStyle(fontWeight: FontWeight.bold),
                         ),
+                        IconButton(
+                          icon: const Icon(Icons.copy),
+                          onPressed: () async {
+                            await Clipboard.setData(
+                                ClipboardData(text: passphrase));
+                          },
+                        )
+                      ],
+                    ),
                     const SizedBox(height: 25),
                     const CircularProgressIndicator()
                   ],
@@ -97,14 +111,11 @@ class _HostGameWidgetState extends State<HostGameWidget> {
   }
 
   Future<PlayerInfo?> hostPrivateGame() async {
-    String addr;
     Response response;
 
-    addr = 'https://chess.sw-gross.de:9999/api/hostPrivate';
-
     try {
-      response = await http
+      response = await http.get(Uri.parse(config.getHostURL()),
-          .get(Uri.parse(addr), headers: {"Accept": "application/json"});
+          headers: {"Accept": "application/json"});
     } catch (e) {
       log(e.toString());
 

lib/pages/lobby_selector.dart

@@ -7,6 +7,7 @@ import 'package:http/http.dart' as http;
 import 'package:mchess/api/register.dart';
 import 'package:mchess/connection_cubit/connection_cubit.dart';
 import 'package:mchess/pages/chess_game.dart';
+import 'package:mchess/utils/config.dart' as config;
 import 'package:shared_preferences/shared_preferences.dart';
 
 class LobbySelector extends StatefulWidget {
@@ -149,17 +150,14 @@ class _LobbySelectorState extends State<LobbySelector> {
   }
 
   Future<PlayerInfo?> joinPrivateGame() async {
-    String addr;
     http.Response response;
 
     // server expects us to send the passphrase
     var info = PlayerInfo(
         playerID: null, lobbyID: null, passphrase: phraseController.text);
 
-    addr = 'https://chess.sw-gross.de:9999/api/joinPrivate';
-
     try {
-      response = await http.post(Uri.parse(addr),
+      response = await http.post(Uri.parse(config.getJoinURL()),
           body: jsonEncode(info), headers: {"Accept": "application/json"});
     } catch (e) {
       log(e.toString());

lib/utils/chess_router.dart

@@ -1,8 +1,11 @@
+import 'package:flutter/widgets.dart';
 import 'package:go_router/go_router.dart';
 import 'package:mchess/pages/chess_game.dart';
 import 'package:mchess/pages/lobby_selector.dart';
 import 'package:mchess/pages/host_game.dart';
 
+final navigatorKey = GlobalKey<NavigatorState>();
+
 class ChessAppRouter {
   static final ChessAppRouter _instance = ChessAppRouter._internal();
 
@@ -13,6 +16,7 @@ class ChessAppRouter {
   }
 
   final router = GoRouter(
+    navigatorKey: navigatorKey,
     debugLogDiagnostics: true,
     routes: [
       GoRoute(

lib/utils/config.dart

@@ -0,0 +1,34 @@
+const prodURL = 'chess.sw-gross.de:9999';
+const debugURL = 'localhost:8080';
+
+const dbgUrl = false;
+
+String getHostURL() {
+  var prot = 'https';
+  var domain = prodURL;
+  if (dbgUrl) {
+    prot = 'http';
+    domain = debugURL;
+  }
+  return '$prot://$domain/api/hostPrivate';
+}
+
+String getJoinURL() {
+  var prot = 'https';
+  var domain = prodURL;
+  if (dbgUrl) {
+    prot = 'http';
+    domain = debugURL;
+  }
+  return '$prot://$domain/api/joinPrivate';
+}
+
+String getWebsocketURL() {
+  var prot = 'wss';
+  var domain = prodURL;
+  if (dbgUrl) {
+    prot = 'ws';
+    domain = debugURL;
+  }
+  return '$prot://$domain/api/ws';
+}