Added code to write to leaderboard if the board is solved.

app/login.js

@@ -16,6 +16,7 @@ initSqlJs().then(function (SQL) {
     const filebuffer = fs.readFileSync(db_path);
     db = new SQL.Database(filebuffer);
     db.run("CREATE TABLE IF NOT EXISTS users(username VARCHAR(20), pwhash VARCHAR(100));");
+    db.run("CREATE TABLE IF NOT EXISTS leaderboard(username VARCHAR(20), score INT);");
     const data = db.export();
     const buffer = Buffer.from(data);
     fs.writeFileSync(env["db_path"], buffer);
@@ -51,6 +52,13 @@ function writeUser(user, hash) {
     fs.writeFileSync(env["db_path"], buffer);
 }
 
+function writeRecord(user, score) {
+    db.run("INSERT INTO leaderboard (username, score) VALUES (?, ?);", [user, score]);
+    const data = db.export();
+    const buffer = Buffer.from(data);
+    fs.writeFileSync(env["db_path"], buffer);
+}
+
 async function signup(user, pass) {
     if (user.length < 2 || user.length > 20)
         return {"code": 400, "error": "Username should be 2-20 characters"};
@@ -79,4 +87,4 @@ async function login(user, pass) {
     }
 }
 
-module.exports = {login, signup, getUserForToken};
+module.exports = {login, signup, getUserForToken, writeRecord};

app/semipublic/game.html

@@ -37,7 +37,8 @@
             BOARD1.updateBoard(args.boardDisplay, args.boardLock, args.boardColors);
             document.querySelector("#join-game").style.display = "none";
             displayPlayerScores(args.playerScores);
-            socket.emit("verify solution", args.boardDisplay);
+            console.log(args.boardDisplay);
+            socket.emit("verify solution", {board: args.boardDisplay, playerScores: args.playerScores});
         });
 
         socket.on("game stop", () => {

app/server.js

@@ -200,6 +200,13 @@ function ensureAuth(req, res, fn) {
     fn(user);
 }
 
+function writeUser(user, hash) {
+    db.run("INSERT INTO users (username, pwhash) VALUES (?, ?);", [user, hash]);
+    const data = db.export();
+    const buffer = Buffer.from(data);
+    fs.writeFileSync(env["db_path"], buffer);
+}
+
 app.get("/", (req, res) => {
     clearBadToken(req, res);
     return res.sendFile(__dirname + "/semipublic/index.html");
@@ -305,6 +312,20 @@ io.on("connection", (socket) => {
         }
     });
 
+    socket.on("verify solution", args => {
+        const { board, playerScores } = args;
+        // Check for missing/incorrect answers
+        for (let y = 0; y < 9; y++) {
+            for (let x = 0; x < 9; x++) {
+                if (board[y][x] !== game.boardSolution[y][x]) {
+                    return;
+                }
+            }
+        }
+        // We solved the sudoku!
+        login.writeRecord(user, playerScores[user]);
+    });
+
     socket.on("disconnect", () => {
         if (game) {
             game.userLeave(socketId, user);
@@ -312,6 +333,7 @@ io.on("connection", (socket) => {
     });
 });
 
+
 httpServer.listen(port, hostname, () => {
     console.log(`http://${hostname}:${port}`);
 });