basic game creation

server/modules/GameManager.js

@@ -0,0 +1,52 @@
+const globals = require('../config/globals');
+
+class GameManager {
+    constructor (logger) {
+        this.logger = logger;
+        //this.activeGameRunner = new ActiveGameRunner(this.postGame).getInstance();
+        //this.gameSocketUtility = GameSocketUtility;
+    }
+
+    createGame = (gameParams) => {
+        const expectedKeys = ['deck', 'hasTimer', 'timerParams'];
+        if (typeof gameParams !== 'object' || expectedKeys.some((key) => !Object.keys(gameParams).includes(key))) {
+            this.logger.error('Tried to create game with invalid options: ' + JSON.stringify(gameParams));
+            return Promise.reject('Tried to create game with invalid options: ' + gameParams);
+        } else {
+            const newAccessCode = this.generateAccessCode();
+            return Promise.resolve(newAccessCode);
+        }
+    }
+
+    generateAccessCode = () => {
+        const numLetters = globals.ACCESS_CODE_CHAR_POOL.length;
+        const codeDigits = [];
+        let iterations = globals.ACCESS_CODE_LENGTH;
+        while (iterations > 0) {
+            iterations--;
+            codeDigits.push(globals.ACCESS_CODE_CHAR_POOL[getRandomInt(numLetters)]);
+        }
+        return codeDigits.join('');
+    }
+
+
+}
+
+function getRandomInt (max) {
+    return Math.floor(Math.random() * Math.floor(max));
+}
+
+class Singleton {
+    constructor (logger) {
+        if (!Singleton.instance) {
+            logger.log('CREATING SINGLETON GAME MANAGER');
+            Singleton.instance = new GameManager(logger);
+        }
+    }
+
+    getInstance () {
+        return Singleton.instance;
+    }
+}
+
+module.exports = Singleton;