Implement the JoinGame event

src/events/JoinGame.ts

@@ -9,7 +9,56 @@ Emissions:
 		players and that they were added to the game either successfully or not
 */
 import { Socket } from 'socket.io';
+import { active_games, log } from '../main';
 export const JoinGame = (socket: Socket, data: JoinGame) => {
-	console.log(`User: ${data.username} (${data.game_code})`);
-	console.log(`Joining a game`);
+	try {
+		// Check if it's an active game
+		if (!Object.keys(active_games).includes(data.game_code)) {
+			log.debug(`Can't find an active game with code: ${data.game_code}`);
+			socket.emit(`GameJoined`, {
+				success: false,
+				message: `Could not find an active game with that game code.`
+			});
+			return;
+		};
+
+		let game = active_games[data.game_code];
+
+		if (game.status !== `lobby`) {
+			log.debug(`Cannot join the game ${game.code}. (state=${game.status})`)
+			socket.emit(`GameJoined`, {
+				success: false,
+				message: `That game cannot be joined because it is not in the lobby.`,
+			});
+			return;
+		}
+
+		// Ensure username is not already taken
+		if (Object.keys(game.players).includes(data.username)) {
+			socket.emit(`GameJoined`, {
+				success: false,
+				message: `That username is already taken, please try another.`,
+			});
+			return;
+		};
+
+		game.add_player(data.username);
+
+		// Alert player who joined
+		socket.emit(`GameJoined`, {
+			success: true,
+			players: game.players,
+		})
+
+		// Alert existing players about new player
+		socket.broadcast.emit(`NewPlayer`, {
+			game_code: data.game_code,
+			player: data.username,
+		});
+	} catch (err) {
+		socket.emit(`GameJoined`, {
+			success: false,
+			message: `${err.name}: ${err.message}`,
+		})
+	}
 };