From f92248c6d3c53a51207b8fe1f899f6ab0340cc88 Mon Sep 17 00:00:00 2001
From: Halit Aksoy <jhalitaksoy@gmail.com>
Date: Fri, 6 May 2022 00:07:41 +0300
Subject: [PATCH 1/3] use unique key for mancala game

---
 src/index.ts | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 3c447cb..5f15861 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -62,9 +62,7 @@ rtmt.listenMessage(channel_new_game, (userKey: string, message: Object) => {
 const gameStore = new Map<string, MancalaGame>();
 
 matchmaker.onPlayersPaired = (userKey1: string, userKey2: string) => {
-  const game = new CommonMancalaGame(userKey1, userKey2);
-  gameStore.set(userKey1, game);
-  gameStore.set(userKey2, game);
+  const game = createMancalaGame(userKey1, userKey2);
 
   rtmt.sendMessage(userKey1, channel_on_game_start, game);
   rtmt.sendMessage(userKey2, channel_on_game_start, game);
@@ -85,7 +83,7 @@ rtmt.listenMessage(channel_game_move, (userKey: string, message: Object) => {
         gameStore.delete(game.player2Id);
       }
     } catch (err: any) {
-      console.log(err);
+      console.error(err);
       rtmt.sendMessage(game.player1Id, channel_on_game_crashed, err);
       rtmt.sendMessage(game.player2Id, channel_on_game_crashed, err);
     }
@@ -109,3 +107,10 @@ const deleteGame = (game: MancalaGame) => {
     gameStore.delete(game.player2Id);
   }
 };
+
+function createMancalaGame(userKey1: string, userKey2: string) {
+  const game = new CommonMancalaGame(generateKey(), userKey1, userKey2);
+  gameStore.set(userKey1, game);
+  gameStore.set(userKey2, game);
+  return game;
+}

From e75eaffd508af9e7b33db68b948031c473868c11 Mon Sep 17 00:00:00 2001
From: Halit Aksoy <jhalitaksoy@gmail.com>
Date: Fri, 6 May 2022 00:45:53 +0300
Subject: [PATCH 2/3] update mancala.js@0.0.2-beta.0

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 5f90f45..649393c 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "@types/ws": "^7.4.5",
     "cors": "^2.8.5",
     "express": "^4.17.1",
-    "mancala.js": "^0.0.1",
+    "mancala.js": "^0.0.2-beta.0",
     "morgan": "^1.10.0",
     "uuid": "^8.3.2",
     "ws": "^7.5.0"

From 2f8a95a971045d4afa4854fc269796a8dee25a70 Mon Sep 17 00:00:00 2001
From: Halit Aksoy <jhalitaksoy@gmail.com>
Date: Fri, 6 May 2022 00:46:32 +0300
Subject: [PATCH 3/3] add GameCrashManager

---
 .gitignore              |  4 +++-
 src/GameCrashManager.ts | 37 +++++++++++++++++++++++++++++++++++++
 src/index.ts            |  4 +++-
 3 files changed, 43 insertions(+), 2 deletions(-)
 create mode 100644 src/GameCrashManager.ts

diff --git a/.gitignore b/.gitignore
index 4afb8ba..36c4c4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,4 +38,6 @@ Thumbs.db
 dist/**/*
 
 # ignore yarn.lock
-yarn.lock
\ No newline at end of file
+yarn.lock
+
+crashes
\ No newline at end of file
diff --git a/src/GameCrashManager.ts b/src/GameCrashManager.ts
new file mode 100644
index 0000000..c513228
--- /dev/null
+++ b/src/GameCrashManager.ts
@@ -0,0 +1,37 @@
+import { MancalaGame } from "mancala.js";
+import fs from "fs";
+const crashFolder = "./crashes";
+export class GameCrashManager {
+  constructor() {}
+
+  static createCrashFolderIfNotExist(): void {
+    if (!fs.existsSync(crashFolder)) {
+      fs.mkdirSync(crashFolder);
+    }
+  }
+
+  static getTime(): string {
+    let date_ob = new Date();
+    let date = ("0" + date_ob.getDate()).slice(-2);
+    let month = ("0" + (date_ob.getMonth() + 1)).slice(-2);
+    let year = date_ob.getFullYear();
+    let hours = date_ob.getHours();
+    let minutes = date_ob.getMinutes();
+    let seconds = date_ob.getSeconds();
+    let miliSeconds = date_ob.getMilliseconds();
+    return `${year}-${month}-${date}-${hours}:${minutes}:${seconds}:${miliSeconds}`;
+  }
+
+  public static logGameCrash(error: Error, game: MancalaGame): string {
+    this.createCrashFolderIfNotExist();
+    const crash = {
+      message: error.message,
+      stack: error.stack,
+      game,
+    };
+    const crashStr = JSON.stringify(crash);
+    const crashFileName = `${game.id}::${this.getTime()}`;
+    fs.writeFile(`${crashFolder}/${crashFileName}`, crashStr, () => {});
+    return crashFileName;
+  }
+}
diff --git a/src/index.ts b/src/index.ts
index 5f15861..7b3ed0d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -17,6 +17,7 @@ import {
 } from "./channel_names";
 import morgan from "morgan";
 import { GameMove } from "./models/GameMove";
+import { GameCrashManager } from "./GameCrashManager";
 
 const app = express();
 
@@ -77,13 +78,14 @@ rtmt.listenMessage(channel_game_move, (userKey: string, message: Object) => {
       game.moveByPlayerPit(userKey, gameMove.index);
       rtmt.sendMessage(game.player1Id, channel_on_game_update, game);
       rtmt.sendMessage(game.player2Id, channel_on_game_update, game);
-
       if (game.state == "ended") {
         gameStore.delete(game.player1Id);
         gameStore.delete(game.player2Id);
       }
     } catch (err: any) {
       console.error(err);
+      const crashFileName = GameCrashManager.logGameCrash(err, game);
+      console.info(`Game crash saved to file : ${crashFileName}`);
       rtmt.sendMessage(game.player1Id, channel_on_game_crashed, err);
       rtmt.sendMessage(game.player2Id, channel_on_game_crashed, err);
     }