socket.io works

app/[gameID]/page.tsx

@@ -0,0 +1,94 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import { useParams } from 'next/navigation';
+import { socket } from "../../socket";
+
+//import Card from '@/components/Card';
+
+//import type { GameCard } from '@/types';
+
+export default function GamePage() {
+  const { gameID } = useParams();
+
+  const [cards, setCards] = useState();
+
+  useEffect(() => {
+    socket.emit('join', gameID);
+
+    socket.on('init', data => {
+      console.log('init', data);
+      setCards(data.id);
+    });
+
+    socket.on('card-flipped', (data) => {
+      console.log('>>>', data);
+      setCards(data.id);
+    });
+
+    return () => {
+      socket.off('init');
+      socket.off('card-flipped');
+    };
+  }, []);
+
+  return <h1>A Page! {cards}</h1>
+}
+
+/*
+export default function GamePage() {
+  const { gameID } = useParams();
+
+  const [cards, setCards] = useState<GameCard[]>([]);
+
+  useEffect(() => {
+    socket.emit('join', gameID);
+
+    socket.on('init', data => {
+      console.log('init', data);
+      setCards(data.cards);
+    });
+
+    socket.on('card-flipped', (data) => {
+      console.log('>>>', data);
+      setCards(data.cards);
+    });
+
+    return () => {
+      socket.off('init');
+      socket.off('card-flipped');
+    };
+  }, []);
+
+  const flipCard = (cardID: string) => {
+    socket.emit('flip-card', {
+      cardID,
+      gameID,
+    });
+  };
+
+  return cards.length ? (
+    <main className="min-h-screen flex flex-col items-center justify-center gap-4">
+      <h1 className="text-2xl font-bold">Game ID: {gameID}</h1>
+
+      <div className="grid grid-cols-3 gap-4">
+        <div className="col-start-2">
+          <Card id={cards[0].id} flipped={cards[0].flipped} onFlip={flipCard} />
+        </div>
+        <div className="col-start-1">
+          <Card id={cards[1].id} flipped={cards[1].flipped} onFlip={flipCard} />
+        </div>
+        <div>
+          <Card id={cards[2].id} flipped={cards[2].flipped} onFlip={flipCard} />
+        </div>
+        <div>
+          <Card id={cards[3].id} flipped={cards[3].flipped} onFlip={flipCard} />
+        </div>
+        <div className="col-start-2">
+          <Card id={cards[4].id} flipped={cards[4].flipped} onFlip={flipCard} />
+        </div>
+      </div>
+    </main>
+  ) : null;
+}
+*/

app/page.tsx

@@ -0,0 +1,24 @@
+'use client';
+import { useRouter } from 'next/navigation';
+//import generateID from '@/tools/simpleID';
+
+export default function Home() {
+  const router = useRouter();
+
+  const handleCreateGame = () => {
+    const id = 'abc123'; //generateID();
+    router.push(`/${id}`);
+  };
+
+  return (
+    <main className="min-h-screen flex items-center justify-center">
+      <button
+        onClick={handleCreateGame}
+        className="bg-blue-600 text-white text-lg px-6 py-3 rounded-xl shadow hover:bg-blue-700 transition"
+      >
+        Create New Game
+      </button>
+    </main>
+  );
+}
+

package-lock.json

@@ -8,13 +8,16 @@
         "cross-env": "^7.0.3",
         "next": "latest",
         "react": "^18.2.0",
-        "react-dom": "^18.2.0"
+        "react-dom": "^18.2.0",
+        "socket.io": "^4.8.1",
+        "socket.io-client": "^4.8.1"
       },
       "devDependencies": {
         "@types/node": "^18.11.5",
         "@types/react": "^18.0.23",
         "@types/react-dom": "^18.0.7",
         "nodemon": "^2.0.20",
+        "tailwindcss": "^4",
         "ts-node": "^10.9.1",
         "typescript": "^4.8.4"
       }
@@ -532,6 +535,11 @@
         "node": ">= 10"
       }
     },
+    "node_modules/@socket.io/component-emitter": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@socket.io/component-emitter/-/component-emitter-3.1.2.tgz",
+      "integrity": "sha512-9BCxFwvbGg/RsZK9tjXd8s4UcwR0MWeFQ1XEKIQVVvAGJyINdrqKMcTRyLoK8Rse1GjzLV9cwjWV1olXRWEXVA=="
+    },
     "node_modules/@swc/counter": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/@swc/counter/-/counter-0.1.3.tgz",
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       "dev": true
     },
+    "node_modules/@types/cors": {
+      "version": "2.8.17",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.17.tgz",
+      "integrity": "sha512-8CGDvrBj1zgo2qE+oS3pOCyYNqCPryMWY2bGfwA0dcfopWGgxs+78df0Rs3rc9THP4JkOhLsAa+15VdpAqkcUA==",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "18.19.86",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-18.19.86.tgz",
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-      "dev": true,
       "dependencies": {
         "undici-types": "~5.26.4"
       }
@@ -603,6 +618,18 @@
         "@types/react": "^18.0.0"
       }
     },
+    "node_modules/accepts": {
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
+      "dependencies": {
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/acorn": {
       "version": "8.14.1",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.14.1.tgz",
@@ -652,6 +679,14 @@
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       "dev": true
     },
+    "node_modules/base64id": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
+      "integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==",
+      "engines": {
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+      }
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     "node_modules/binary-extensions": {
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       "dev": true
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+    "node_modules/cookie": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.7.2.tgz",
+      "integrity": "sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/create-require": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/create-require/-/create-require-1.1.1.tgz",
@@ -861,6 +916,77 @@
         "node": ">=0.3.1"
       }
     },
+    "node_modules/engine.io": {
+      "version": "6.6.4",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.6.4.tgz",
+      "integrity": "sha512-ZCkIjSYNDyGn0R6ewHDtXgns/Zre/NT6Agvq1/WobF7JXgFff4SeDroKiCO3fNJreU9YG429Sc81o4w5ok/W5g==",
+      "dependencies": {
+        "@types/cors": "^2.8.12",
+        "@types/node": ">=10.0.0",
+        "accepts": "~1.3.4",
+        "base64id": "2.0.0",
+        "cookie": "~0.7.2",
+        "cors": "~2.8.5",
+        "debug": "~4.3.1",
+        "engine.io-parser": "~5.2.1",
+        "ws": "~8.17.1"
+      },
+      "engines": {
+        "node": ">=10.2.0"
+      }
+    },
+    "node_modules/engine.io-client": {
+      "version": "6.6.3",
+      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-6.6.3.tgz",
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+      "dependencies": {
+        "@socket.io/component-emitter": "~3.1.0",
+        "debug": "~4.3.1",
+        "engine.io-parser": "~5.2.1",
+        "ws": "~8.17.1",
+        "xmlhttprequest-ssl": "~2.1.1"
+      }
+    },
+    "node_modules/engine.io-client/node_modules/debug": {
+      "version": "4.3.7",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.7.tgz",
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+      "dependencies": {
+        "ms": "^2.1.3"
+      },
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+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
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+    "node_modules/engine.io-parser": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.2.3.tgz",
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+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/engine.io/node_modules/debug": {
+      "version": "4.3.7",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.7.tgz",
+      "integrity": "sha512-Er2nc/H7RrMXZBFCEim6TCmMk02Z8vLC2Rbi1KEBggpo0fS6l0S1nnapwmIi3yW/+GOJap1Krg4w0Hg80oCqgQ==",
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@@ -989,6 +1115,25 @@
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       "dev": true
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+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/mime-types": {
+      "version": "2.1.35",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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+      },
+      "engines": {
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+    },
     "node_modules/minimatch": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
@@ -1004,8 +1149,7 @@
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+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
-      "dev": true
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     "node_modules/nanoid": {
       "version": "3.3.11",
@@ -1024,6 +1168,14 @@
         "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
       }
     },
+    "node_modules/negotiator": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
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+      }
+    },
     "node_modules/next": {
       "version": "15.2.5",
       "resolved": "https://registry.npmjs.org/next/-/next-15.2.5.tgz",
@@ -1114,6 +1266,14 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
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@@ -1324,6 +1484,122 @@
         "semver": "bin/semver.js"
       }
     },
+    "node_modules/socket.io": {
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/socket.io/-/socket.io-4.8.1.tgz",
+      "integrity": "sha512-oZ7iUCxph8WYRHHcjBEc9unw3adt5CmSNlppj/5Q4k2RIrhl8Z5yY2Xr4j9zj0+wzVZ0bxmYoGSzKJnRl6A4yg==",
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+        "accepts": "~1.3.4",
+        "base64id": "~2.0.0",
+        "cors": "~2.8.5",
+        "debug": "~4.3.2",
+        "engine.io": "~6.6.0",
+        "socket.io-adapter": "~2.5.2",
+        "socket.io-parser": "~4.2.4"
+      },
+      "engines": {
+        "node": ">=10.2.0"
+      }
+    },
+    "node_modules/socket.io-adapter": {
+      "version": "2.5.5",
+      "resolved": "https://registry.npmjs.org/socket.io-adapter/-/socket.io-adapter-2.5.5.tgz",
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+      "dependencies": {
+        "debug": "~4.3.4",
+        "ws": "~8.17.1"
+      }
+    },
+    "node_modules/socket.io-adapter/node_modules/debug": {
+      "version": "4.3.7",
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@@ -1374,6 +1650,12 @@
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+    "node_modules/tailwindcss": {
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+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.3.tgz",
+      "integrity": "sha512-2Q+rw9vy1WFXu5cIxlvsabCwhU2qUwodGq03ODhLJ0jW4ek5BUtoCsnLB0qG+m8AHgEsSJcJGDSDe06FXlP74g==",
+      "dev": true
+    },
     "node_modules/to-regex-range": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
@@ -1465,8 +1747,7 @@
     "node_modules/undici-types": {
       "version": "5.26.5",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
-      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==",
+      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
-      "dev": true
     },
     "node_modules/v8-compile-cache-lib": {
       "version": "3.0.1",
@@ -1474,6 +1755,14 @@
       "integrity": "sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==",
       "dev": true
     },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -1488,6 +1777,34 @@
         "node": ">= 8"
       }
     },
+    "node_modules/ws": {
+      "version": "8.17.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.1.tgz",
+      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ==",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/xmlhttprequest-ssl": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-2.1.2.tgz",
+      "integrity": "sha512-TEU+nJVUUnA4CYJFLvK5X9AOeH4KvDvhIfm0vV1GaQRtchnG0hgK5p8hw/xjv8cunWYCsiPCSDzObPyhEwq3KQ==",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/yn": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",

package.json

@@ -9,13 +9,16 @@
     "cross-env": "^7.0.3",
     "next": "latest",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "socket.io": "^4.8.1",
+    "socket.io-client": "^4.8.1"
   },
   "devDependencies": {
     "@types/node": "^18.11.5",
     "@types/react": "^18.0.23",
     "@types/react-dom": "^18.0.7",
     "nodemon": "^2.0.20",
+    "tailwindcss": "^4",
     "ts-node": "^10.9.1",
     "typescript": "^4.8.4"
   }

pages/a.tsx

@@ -1,3 +0,0 @@
-export default function A() {
-  return <div>a</div>;
-}

pages/index.tsx

@@ -1,14 +0,0 @@
-import Link from "next/link";
-
-export default function Home() {
-  return (
-    <ul>
-      <li>
-        <Link href="/a">/a (Pages Router)</Link>
-      </li>
-      <li>
-        <Link href="/b">b (App Router)</Link>
-      </li>
-    </ul>
-  );
-}

server.ts

@@ -1,21 +1,57 @@
-import { createServer } from "http";
+import next from 'next';
-import { parse } from "url";
+import { createServer } from 'http';
-import next from "next";
+import { Server as SocketIOServer, type Socket } from 'socket.io';
 
-const port = parseInt(process.env.PORT || "3000", 10);
+//import GameStore from '@/lib/GameStore';
-const dev = process.env.NODE_ENV !== "production";
+
-const app = next({ dev });
+const dev = process.env.NODE_ENV !== 'production';
-const handle = app.getRequestHandler();
+const hostname = 'localhost';
+const port = 3000;
+
+// when using middleware `hostname` and `port` must be provided
+const app = next({ dev, hostname, port });
+const handler = app.getRequestHandler();
+
+//const gameStore = new GameStore();
 
 app.prepare().then(() => {
-  createServer((req, res) => {
+  const httpServer = createServer(handler);
-    const parsedUrl = parse(req.url!, true);
-    handle(req, res, parsedUrl);
-  }).listen(port);
 
-  console.log(
+  const io = new SocketIOServer(httpServer);
-    `> Server listening at http://localhost:${port} as ${
+
-      dev ? "development" : process.env.NODE_ENV
+  io.on('connection', (socket: Socket) => {
-    }`,
+    console.log(`Client connected: ${socket.id}`);
-  );
+
+    socket.on('join', (gameID) => {
+      socket.join(gameID);
+      //const game = gameStore.joinGame(gameID, socket.id);
+
+      console.log(`Socket ${socket.id} joined game ${gameID}`)
+
+      //socket.emit('init', { cards: game.cards });
+      socket.emit('init', { id: socket.id });
+    })
+
+    socket.on('flip-card', ({ gameID, cardID }) => {
+      console.log('Card flipped:', { gameID, cardID });
+      //const game = gameStore.flipCard(gameID, cardID);
+      //io.to(gameID).emit('card-flipped', { gameID, cards: game.cards });
+      io.to(gameID).emit('card-flipped', { id: socket.id });
+    });
+
+    socket.on('disconnect', (obj) => {
+      console.log(`Client disconnected: ${socket.id}`);
+      console.log(obj);
+      console.log(socket);
+    });
+  });
+
+  httpServer
+    .once('error', (err) => {
+      console.error('Server error:', err);
+      process.exit(1);
+    })
+    .listen(port, () => {
+      console.log(`> Ready on http://${hostname}:${port}`);
+    });
 });

socket.ts

@@ -0,0 +1,5 @@
+"use client";
+
+import { io } from 'socket.io-client';
+
+export const socket = io();