Refactor LogWriter history

lib/logWriter.js

@@ -39,13 +39,26 @@
         }
 
         //Init history
+        this.initHistory();
+    };
+
+    /**
+     * LogWriter.prototype.initHistory
+     *
+     * Attach and init the history property
+     */
+    LogWriter.prototype.initHistory = function () {
 
         this.history = {
             dates : {}
         };
 
+        var historyPath = path.join(this.rootPath, 'history.json');
+        
+        if (!fs.existsSync(historyPath)) {  //create file if doesn't exist yet
+
             this.writeFile(
-            path.join(this.rootPath, 'history.json'),
+                historyPath,
                 this.history,
                 function (err) {
                     if (err) {
@@ -53,6 +66,25 @@
                     }
                 }
             );
+
+        } else { //get history if file exists
+
+            var self = this;
+
+            fs.readFile(historyPath, function (err, data) {
+                if (err) {
+                    throw err;
+                } else {
+                    try {
+
+                        self.history = JSON.parse(data);
+
+                    } catch (e) {
+                        throw e;
+                    }
+                }
+            });
+        }
     };
 
     /**
@@ -88,7 +120,7 @@
                 callback(err);
             } else {
                 
-                var newFile = fs.existsSync(pathToFile);
+                var newFile = !fs.existsSync(pathToFile);
 
                 fs.appendFile(pathToFile, content, function (err) {
                     
@@ -140,14 +172,6 @@
         var historyPath = path.join(this.rootPath, 'history.json'),
             self        = this;
 
-        fs.readFile(
-            historyPath, 
-            function (err, data) {
-                if (err) {
-                    throw err;
-                } else {
-
-                    try {
         var today   = moment().startOf('day').valueOf().toString();
 
         //Save the path under today key
@@ -156,6 +180,8 @@
             self.history.dates[today] = [];
         }
         
+        if (self.history.dates[today].indexOf(pathToFile) === -1) {
+
             self.history.dates[today].push(pathToFile);
 
             self.writeFile(historyPath, self.history, function (err) {
@@ -163,15 +189,8 @@
                     throw err;
                 }
             });
-
-                    } catch (e) {
-                        throw e;
         }
 
-                }
-            }
-        );
-
     };
 
     /**