<?php

	$C_North = $_GET['C_North'];
	$C_East = $_GET['C_East'];
	$CNE = "".$C_North.",".$C_East.""; //Current North East
	$D_North = $_GET['D_North'];
	$D_East = $_GET['D_East'];
	$DNE = "".$D_North.",".$D_East."";//Destination North East
	$directions = array("northeast","northwest","southeast","southwest","north","east","south","west");
	$exact_dir = "";
	//time
	date_default_timezone_set('Asia/Taipei');
	$datetime = date ("Y-m-d H:i:s" , mktime(date('H'), date('i'), date('s'), date('m'), date('d'), date('Y'))) ;
	//write
	$fileContent = "Current $CNE \n Destination $DNE \n $datetime";//.$var2." East.\n";
	
	$fileStatus = file_put_contents('myFile.txt',$fileContent,FILE_APPEND);
	
	$get_json = file_get_contents("https://maps.googleapis.com/maps/api/directions/json?key=AIzaSyD6TdJspcWhQ1V8QzwIsfy5dNKeWsC2AAI&origin=$CNE&destination=$DNE&units=imperial&sensor=false&mode=walking");
    $json_data = json_decode(utf8_encode($get_json),true);
	$dir_result = $json_data['routes'][0]['legs'][0]['steps'][0]['html_instructions'];
	//echo $du;
	foreach($directions as $dir){
		if (strpos($dir_result ,$dir)!=""){
			$exact_dir = substr($dir_result, strpos($dir_result,$dir),strlen($dir));
			echo $exact_dir;
			break;
		}
	}
    //print_r($djd['routes'][0]['legs'][0]['steps'][0]['html_instructions']);
	$fileStatus = file_put_contents('myFile.txt',$exact_dir,FILE_APPEND);
?>