Add cleanup functions for the games.

server/src/utils/cleanup.ts

@@ -0,0 +1,58 @@
+import { writeFileSync } from "fs";
+import { Game } from "../objects/Game";
+import { games, conf, log } from "../main";
+
+export function processExit() {
+	/**
+	 * This is the cleanup code that runs when the server has been exited for
+	 * any reason. We check all games if they have any active connection(s),
+	 * then if they do, we save the game to disk, if not we just delete it
+	 * completely from the system.
+	 */
+	log.info(`Cleaning up games`)
+	for (var gc in games) {
+		let game = games[gc];
+		if (activeGame(game)) {
+			game.log.debug(`Saving to datastore`);
+			writeFileSync(
+				`${conf.datastores.directory}/${game.id}.game`,
+				JSON.stringify(game.toJSON())
+			);
+		} else {
+			game.log.debug(`Deleting game`);
+			delete games[gc];
+		};
+	};
+	log.info(`Done cleaning up games`);
+};
+
+
+export async function checkSocketConnections() {
+	/**
+	 * This is the cleanup that occurs whenever a new game has been started
+	 */
+	log.info(`[checkSocketConnections] Checking for games to clean up`)
+	for (var gc in games) {
+		let game = games[gc];
+		if (!activeGame(game)) {
+			game.log.debug(`[checkSocketConnections] Deleting game`);
+			delete games[gc];
+		};
+	};
+	log.info(`[checkSocketConnections] Done cleaning up games`);
+};
+
+
+function activeGame(game: Game): boolean {
+	/**
+	 * This checks if a game is still active by checking that is at least one
+	 * socket client still connected. If not then the game is considered
+	 * stagnant and will be deleted by the cleanup code.
+	 */
+	for (var player of game.players) {
+		if (player.socket.connected) {
+			return true;
+		};
+	};
+	return false;
+};