classic game cleanup

lib/classic.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'state.dart';
 import 'game.dart';
+import "util.dart";
 
 class ClassicGame extends StatefulWidget {
   const ClassicGame({super.key});
@@ -22,6 +23,8 @@ class _ClassicGameState extends State<ClassicGame> {
     TTCState.empty,
     TTCState.empty,
   ];
+  bool ended = false;
+  TTCState? winner;
 
   String get turnText => switch (turn) {
         TTCState.empty => "",
@@ -40,7 +43,7 @@ class _ClassicGameState extends State<ClassicGame> {
   Widget _invalidChoiceAlert(TTCState existingValue) {
     return Dialog(
       child: Padding(
-        padding: EdgeInsets.all(10),
+        padding: const EdgeInsets.all(10),
         child: Column(
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.center,
@@ -77,10 +80,40 @@ class _ClassicGameState extends State<ClassicGame> {
 
     setState(() {
       data[index] = turn;
+      winner = Util.checkWin(data);
+      if (winner != null && winner != TTCState.empty) {
+        ended = true;
+      }
       _nextTurn();
     });
   }
 
+  void _endedCellOnTap(int index) {
+    showDialog(
+        context: context,
+        builder: (context) {
+          return Dialog(
+            child: Padding(
+              padding: const EdgeInsets.all(10),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                crossAxisAlignment: CrossAxisAlignment.center,
+                children: [
+                  const Text(
+                    "GAME OVER",
+                    style: TextStyle(fontWeight: FontWeight.bold),
+                  ),
+                  Text("${winner?.name.toUpperCase()} has already won"),
+                  ElevatedButton(
+                      onPressed: () => Navigator.pop(context),
+                      child: const Text("Ok")),
+                ],
+              ),
+            ),
+          );
+        });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Column(
@@ -89,13 +122,13 @@ class _ClassicGameState extends State<ClassicGame> {
         const Spacer(flex: 5),
         Center(
             child: Text(
-          "$turnText's turn",
+          !ended ? "$turnText's turn" : "${winner?.name.toUpperCase()} wins",
           style: const TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
         )),
         const Spacer(flex: 1),
         TTCGame(
           turn: turn,
-          cellOnTapCallback: _cellOnTap,
+          cellOnTapCallback: !ended ? _cellOnTap : _endedCellOnTap,
           data: data,
           cellTextStyle: const TextStyle(fontSize: 40),
         ),

lib/game.dart

@@ -20,6 +20,27 @@ class TTCGame extends StatelessWidget {
   /// hook into end of turn cycle;
   final Function cellOnTapCallback;
 
+  @override
+  Widget build(BuildContext context) {
+    List<Widget> cells = data
+        .map((state) => Text(
+              state != TTCState.empty ? state.name.toUpperCase() : "",
+              style: cellTextStyle,
+            ))
+        .toList();
+    return GameHash(
+      cellOnTapCallback: cellOnTapCallback,
+      children: cells,
+    );
+  }
+}
+
+class GameHash extends StatelessWidget {
+  const GameHash({super.key, required this.children, this.cellOnTapCallback});
+  final List<Widget> children;
+
+  final Function? cellOnTapCallback;
+
   Border _genCellBorder(
     int index, {
     BorderSide borderSide = const BorderSide(),
@@ -32,52 +53,46 @@ class TTCGame extends StatelessWidget {
     );
   }
 
-  Widget _genCell(int index, TTCState state) => Container(
+  MapEntry<int, Widget> _genCell(int index, Widget content) {
+    return MapEntry(
+      index,
+      Container(
         decoration: BoxDecoration(border: _genCellBorder(index)),
-      child: TTCCell(
-        state: state,
-        textStyle: cellTextStyle,
+        child: HashCell(
           stateSetCallback: () {
-          cellOnTapCallback(index);
+            if (cellOnTapCallback != null) {
+              cellOnTapCallback!(index);
+            }
           },
-      ));
+          child: content,
+        ),
+      ),
+    );
+  }
 
   @override
   Widget build(BuildContext context) {
-    List<Widget> cells = [];
-    for (final (index, state) in data.indexed) {
-      cells.add(_genCell(index, state));
-    }
     return GridView.count(
       crossAxisCount: 3,
       shrinkWrap: true,
-      children: cells,
+      children: children.asMap().map(_genCell).values.toList(),
     );
   }
 }
 
-class TTCCell extends StatelessWidget {
-  const TTCCell({
+class HashCell extends StatelessWidget {
+  const HashCell({
     super.key,
-    required this.state,
+    required this.child,
     this.stateSetCallback,
-    this.textStyle,
   });
 
-  final TTCState state;
+  final Widget child;
   final VoidCallback? stateSetCallback;
-  final TextStyle? textStyle;
-
-  String get text => switch (state) {
-        TTCState.empty => "",
-        TTCState.x => "X",
-        TTCState.o => "O",
-      };
 
   @override
   Widget build(BuildContext context) => InkWell(
         onTap: stateSetCallback,
-      child: Center(
-        child: Text(text, style: textStyle),
-      ));
+        child: Center(child: child),
+      );
 }