From 57757fe10b33c1d9fededf2537012dbe318f4c53 Mon Sep 17 00:00:00 2001
From: Notmoo <skraig.boeuf@gmail.com>
Date: Sun, 30 Jul 2017 14:07:50 +0200
Subject: [PATCH] =?UTF-8?q?Module=20Server=20:=20ajout=20clss=20FileUtil,?=
 =?UTF-8?q?=20ajout=20v=C3=A9rif=20existance=20fichier=20dans=20clss=20Fil?=
 =?UTF-8?q?eStockDao?=
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---
 .../pqt/server/module/stock/FileStockDao.java | 16 ++++++++++++
 .../com/pqt/server/utils/FileUtil.java        | 26 +++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 Workspace/server/src/main/WEB-INF/classes/com/pqt/server/utils/FileUtil.java

diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/stock/FileStockDao.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/stock/FileStockDao.java
index 6f8c42a1..37824cee 100644
--- a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/stock/FileStockDao.java
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/stock/FileStockDao.java
@@ -1,6 +1,7 @@
 package com.pqt.server.module.stock;
 
 import com.pqt.core.entities.product.Product;
+import com.pqt.server.utils.FileUtil;
 
 import java.io.*;
 import java.util.*;
@@ -82,6 +83,15 @@ public class FileStockDao implements IStockDao {
 
     private Map<Long, Product> load(){
         Map<Long, Product> loadedData = new HashMap<>();
+        try{
+            if(FileUtil.createFileIfNotExist(STOCK_FILE_NAME)){
+                return loadedData;
+            }
+        }catch(IOException e){
+            e.printStackTrace();
+            return loadedData;
+        }
+
         try(FileInputStream fis = new FileInputStream(STOCK_FILE_NAME);
             ObjectInputStream ois = new ObjectInputStream(fis)){
 
@@ -106,6 +116,12 @@ public class FileStockDao implements IStockDao {
     }
 
     private void save(Map<Long, Product> products){
+        try{
+            FileUtil.createFileIfNotExist(STOCK_FILE_NAME);
+        }catch (IOException e){
+            e.printStackTrace();
+            return;
+        }
         try(FileOutputStream fos = new FileOutputStream(STOCK_FILE_NAME);
                 ObjectOutputStream oos = new ObjectOutputStream(fos)){
 
diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/utils/FileUtil.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/utils/FileUtil.java
new file mode 100644
index 00000000..08fddf40
--- /dev/null
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/utils/FileUtil.java
@@ -0,0 +1,26 @@
+package com.pqt.server.utils;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class FileUtil {
+
+    /**
+     * Check if the given file path correspond to an existing file, and create it if it doesn't.
+     *
+     * @param filePath the file path to check
+     *
+     * @return {@code true} if the file has been created, {@code false} if it already existed.
+     * @throws IOException if any IOException happend during this method's execution.
+     */
+    public static boolean createFileIfNotExist(String filePath) throws IOException {
+        Path path = Paths.get(filePath);
+        if(!Files.exists(path)){
+            Files.createFile(path);
+            return true;
+        }
+        return false;
+    }
+}