From 98c05304c51ef85d453c9c3b8bd59049427eb479 Mon Sep 17 00:00:00 2001
From: Zutatensuppe <oo.para@gmail.com>
Date: Tue, 22 Dec 2020 22:54:31 +0100
Subject: [PATCH] add replay check in overview

---
 game/index.js     |  3 +++
 server/Game.js    |  1 +
 server/GameLog.js | 30 +++++++++++++++++++++++++++---
 server/index.js   |  1 +
 4 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/game/index.js b/game/index.js
index f9ef63e..b30bfe1 100644
--- a/game/index.js
+++ b/game/index.js
@@ -60,6 +60,9 @@ export default {
           {{time(g.started, g.finished)}}<br />
         </span>
       </a>
+      <a v-if="g.hasReplay" class="game-replay" :href="'/replay/' + g.id">
+        ↪️ Watch replay
+      </a>
     </div>
   </div>
 
diff --git a/server/Game.js b/server/Game.js
index 97b10b5..cb72ba5 100644
--- a/server/Game.js
+++ b/server/Game.js
@@ -59,6 +59,7 @@ async function createGameObject(gameId, targetTiles, image, ts) {
   )
 }
 async function createGame(gameId, targetTiles, image, ts) {
+  GameLog.create(gameId)
   GameLog.log(gameId, 'createGame', targetTiles, image, ts)
 
   const seed = Util.hash(gameId + ' ' + ts)
diff --git a/server/GameLog.js b/server/GameLog.js
index 300fdec..a3c2b19 100644
--- a/server/GameLog.js
+++ b/server/GameLog.js
@@ -2,14 +2,36 @@ import fs from 'fs'
 
 const DATA_DIR = './../data'
 
+const filename = (gameId) => `${DATA_DIR}/log_${gameId}.log`
+
+const create = (gameId) => {
+  const file = filename(gameId)
+  if (!fs.existsSync(file)) {
+    fs.appendFileSync(file, '')
+  }
+}
+
+const exists = (gameId) => {
+  const file = filename(gameId)
+  return fs.existsSync(file)
+}
+
 const log = (gameId, ...args) => {
+  const file = filename(gameId)
+  if (!fs.existsSync(file)) {
+    return
+  }
   const str = JSON.stringify(args)
-  fs.appendFileSync(`${DATA_DIR}/log_${gameId}.log`, str + "\n")
+  fs.appendFileSync(file, str + "\n")
 }
 
 const get = (gameId) => {
-  const all = fs.readFileSync(`${DATA_DIR}/log_${gameId}.log`, 'utf-8')
-  return all.split("\n").filter(line => !!line).map((line) => {
+  const file = filename(gameId)
+  if (!fs.existsSync(file)) {
+    return []
+  }
+  const lines = fs.readFileSync(file, 'utf-8').split("\n")
+  return lines.filter(line => !!line).map((line) => {
     try {
       return JSON.parse(line)
     } catch (e) {
@@ -20,6 +42,8 @@ const get = (gameId) => {
 }
 
 export default {
+  create,
+  exists,
   log,
   get,
 }
diff --git a/server/index.js b/server/index.js
index 1775ea5..4d30143 100644
--- a/server/index.js
+++ b/server/index.js
@@ -91,6 +91,7 @@ app.use('/', async (req, res, next) => {
     const games = [
       ...Game.getAllGames().map(game => ({
         id: game.id,
+        hasReplay: GameLog.exists(game.id),
         started: Game.getStartTs(game.id),
         finished: Game.getFinishTs(game.id),
         tilesFinished: Game.getFinishedTileCount(game.id),