<?php
/**
* Template Name: Produce HTML Timetables
*
* @package Transit_Base_Template
*/

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

//function to see output of PHP trying to execute node.js command
function liveExecuteCommand($cmd)
        {

            while (@ ob_end_flush()); // end all output buffers if any

            $proc = popen("$cmd 2>&1 ; echo Exit status : $?", 'r');

            $live_output     = "";
            $complete_output = "";

            while (!feof($proc))
            {
                $live_output     = fread($proc, 4096);
                $complete_output = $complete_output . $live_output;
                echo "$live_output<br />";
                @ flush();
            }

            pclose($proc);

            // get exit status
            preg_match('/[0-9]+$/', $complete_output, $matches);

            // return exit status and intended output
            return array (
                            'exit_status'  => intval($matches[0]),
                            'output'       => str_replace("Exit status : " . $matches[0], '', $complete_output)
                         );
        }

        if ( is_user_logged_in() ) {



            //first, specifying the path to the node.js command with 'export PATH=$PATH:/home/mcedd/bin/'
            //then running the node.js command with this: 'gtfs-to-html --configPath /home/mcedd/public_html/gorgetranslink.com/gtfs-to-html-configs/config.json';
            //this command works succesfully when run from linux shell when in this directory: '/home/mcedd':  'gtfs-to-html --configPath /home/mcedd/public_html/gorgetranslink.com/gtfs-to-html-configs/config.json';
            $command_line = 'export PATH=$PATH:/home/mcedd/bin/; gtfs-to-html --configPath /home/mcedd/gtfs-to-html-configs/config.json';



            $result = liveExecuteCommand($command_line);
            if($result['exit_status'] === 0){
               echo "the command succeeded";
            } else {
                echo "the command did not succeed";
            }

            echo "<pre>";
            print_r($result);
            echo "</pre>";

         }
       else {
           echo "Sorry, you must be a registered user and logged in to view this page.";
           echo "<h3>Login</h3>";
           echo "<a href='/wp-admin/' class='button'>Login</a>";
       }