From 5bd8c87f27c5b8332ebee6f96a9a2bdbf7c55c60 Mon Sep 17 00:00:00 2001
From: "Valeriano A.R" <valen.alfonso@gmail.com>
Date: Sun, 28 Jun 2015 17:41:25 +0200
Subject: [PATCH] TimingStatistics: Scanning timing and statistics.

---
 code/main.php             | 14 +++++++++
 code/timingStatistics.php | 62 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)
 create mode 100644 code/timingStatistics.php

diff --git a/code/main.php b/code/main.php
index 251af36..6bae884 100644
--- a/code/main.php
+++ b/code/main.php
@@ -9,6 +9,8 @@ include_once "scanner.php";
 include_once "multilang.php";
 MultiLang::LoadFile("ui");
 
+include_once "timingStatistics.php";
+$timings=new TimingStatistics();
 
 function RenderDocument($filePath){
 	$render="";
@@ -45,9 +47,12 @@ $Size=RequestParm("ddlSize",$Size);
 $Crop=RequestParm("chkCrop",$Crop)!=false;
 $CropFuzz=RequestParm("txtCropFuzz",$CropFuzz);
 
+$CurrentKey=$Scanner["ScanDevice"]."_".$Resolution."_".$Format."_".$Size;
+
 // Preprocess
 $DestFile=null;
 if(RequestParm("btnScan",false)){
+	$timeThen=time()+microtime();
 	CleanUp();
 	$baseName="Scan-".date("Y-m-d_H_i_s");
 	$DestFile=Scan($Scanner["ScanDevice"],$Resolution,$Format,$Size,$baseName);
@@ -55,8 +60,17 @@ if(RequestParm("btnScan",false)){
 		CropImage($DestFile);
 	}
 	MoveToDest($DestFile);
+	$timeNow=time()+microtime();
+	$timings->RegisterTiming($CurrentKey,$timeNow-$timeThen);
 }
 
+// Pass the JSON object of timings to client
+echo "<script>\n";
+echo "var timings=";
+echo json_encode($timings->GetTimingsAverage(),JSON_PRETTY_PRINT);
+echo ";\n";
+echo "</script>\n";
+
 // Render Form
 $formFields="";
 $formFields.=RenderFieldInfo(MultiLang::GetString("Scanner"),$Scanner["ScanModel"]);
diff --git a/code/timingStatistics.php b/code/timingStatistics.php
new file mode 100644
index 0000000..0deea8e
--- /dev/null
+++ b/code/timingStatistics.php
@@ -0,0 +1,62 @@
+<?php
+
+class TimingStatistics{
+	private $filename="temp/timingStatistics.json";
+	private $values=null;
+	
+	private function InitValues(){
+		$this->values=array();
+	}
+	
+	private function LoadValues(){
+		if($this->values!=null){return;}
+		if(!is_file($this->filename)){ 
+			$this->InitValues();
+			return;
+		}
+		$overviewContents=@file_get_contents($this->filename);
+		if($overviewContents===false){ 
+			$this->InitValues();
+			return;
+		}
+		$this->values=json_decode($overviewContents,true);
+		if($this->values==null){
+			$this->InitValues();
+			return;
+		}
+	}
+	
+	private function SaveValues(){
+		if($this->values==null){return;}
+			
+		$valuesContent=json_encode($this->values,JSON_PRETTY_PRINT);
+		file_put_contents($this->filename,$valuesContent);
+	}
+	
+	public function RegisterTiming($keyName,$time){
+		$this->LoadValues();
+		if(isset($this->values[$keyName])==false){
+			$this->values[$keyName]=array();
+		}
+		$this->values[$keyName][]=$time;
+		if(count($this->values[$keyName])>5){
+			unset($this->values[$keyName][0]);
+		}
+		$this->SaveValues();
+	}
+	
+	public function GetTimingsAverage(){
+		$this->LoadValues();
+		$result=array();
+		foreach ($this->values as $key => $value) {
+			$totalTime=0;
+			$totalCount=0;
+			foreach ($value as $time) {
+				$totalTime=$totalTime+$time;
+				$totalCount=$totalCount+1;
+			}
+			$result[$key]=($totalTime/$totalCount);
+		}
+		return $result;
+	}
+}