Add password check and error messages

src/network/server.ts

@@ -1,6 +1,12 @@
 import NetworkPeer from "./peer";
 import { DataConnection } from "peerjs";
-import { RoomInfo, PasswordRequest, Room } from "./types";
+import {
+  RoomInfo,
+  PasswordRequest,
+  Room,
+  ErrorMessage,
+  PasswordResponse
+} from "./types";
 
 export default class PeerServer extends NetworkPeer {
   private room: Room;
@@ -19,15 +25,38 @@ export default class PeerServer extends NetworkPeer {
     // Check if room is full
     if (this.playerCount >= this.room.info.max_players) {
       //TODO Reject
+      this.send<ErrorMessage>(conn, { kind: "error", error: "room is full" });
+      conn.close();
+      return;
     }
 
     if (this.room.info.password != "") {
       this.send<PasswordRequest>(conn, { kind: "password-req" });
+      conn.on("data", this.checkPasswordResponse.bind(this, conn));
     } else {
       //TODO Add player
     }
   }
 
+  private checkPasswordResponse(conn: DataConnection, data: any) {
+    try {
+      let resp = data as PasswordResponse;
+      if (resp.password != this.room.info.password) {
+        this.send<ErrorMessage>(conn, {
+          kind: "error",
+          error: "invalid password"
+        });
+        return;
+      }
+      //TODO Add player
+    } catch (e) {
+      this.send<ErrorMessage>(conn, {
+        kind: "error",
+        error: "not a password"
+      });
+    }
+  }
+
   private get playerCount(): number {
     return Object.keys(this.room.players).length;
   }

src/network/types.ts

@@ -46,7 +46,7 @@ type DraftInfo = {
 
 // Message schemas
 
-export type NetworkMessage = PasswordRequest | PasswordResponse;
+export type NetworkMessage = PasswordRequest | PasswordResponse | ErrorMessage;
 
 export interface PasswordRequest {
   kind: "password-req";
@@ -56,3 +56,8 @@ export interface PasswordResponse {
   kind: "password-resp";
   password: string;
 }
+
+export interface ErrorMessage {
+  kind: "error";
+  error: string;
+}