www-thermferm/liveview.php

<?php
/*****************************************************************************
 * Copyright (C) 2014
 *   
 * Michiel Broek <mbroek at mbse dot eu>
 *
 * This file is part of ThermFerm
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * ThermFerm is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with ThermFerm; see the file COPYING.  If not, write to the Free
 * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *****************************************************************************/


require_once('utilities.php');


function showunit($unit)
{
    $outstr = '';
    $air_state = $beer_state = 1;

    $sock = open_socket();
    if ($sock == false) {
	return '';
    }

    socket_write($sock, "UNIT " . $unit, 4096);
    $answer = "";
    while (1) {
	$line = socket_read($sock, 4096);
	if ($line === '')
		break;
	$answer .= $line;
    }
    socket_close($sock);

    $sock = open_socket();
    if ($sock == false) {
	return '';
    }

    socket_write($sock, "LIST UNIT", 4096);
    $answer = "";
    while (1) {
	$line = socket_read($sock, 4096);
	if ($line === '')
	    break;
	$answer .= $line;
    }
    socket_close($sock);
    $arr = explode("\r\n", $answer);

    if (startsWith($arr[0], "213")) {

	$outstr .= '    <div id="fermentor">'.PHP_EOL;

	foreach($arr as $l) {
	    $vals = explode(",", $l);
	    if (strcmp($vals[0], "NAME") == 0) {
		/*
		 * The name is allways first, so when we have it
		 * emit the formatting.
		 */
		$outstr .= '     <div id="fermentor_head">'.PHP_EOL;
		$outstr .= '      ' . $vals[1] .PHP_EOL;
		$outstr .= '     </div>'.PHP_EOL;
		$outstr .= '     <div id="fermentor_pict">'.PHP_EOL;
		$outstr .= '      <img src="images/Fermenter_60l.gif">'.PHP_EOL;
		$outstr .= '     </div>'.PHP_EOL;
		$outstr .= '     <div id="fermentor_control">'.PHP_EOL;
	    }
	    if (strcmp($vals[0], "MODE") == 0) {
		$outstr .= '      mode ' . $vals[1] . '<br>' .PHP_EOL;
	    }
	    if (strcmp($vals[0], "AIR_STATE") == 0) {
		$air_state = $vals[1];
	    }
	    if (strcmp($vals[0], "AIR_TEMPERATURE") == 0) {
		if ($air_state == 0)
		    $outstr .= '      air temperature ' . $vals[1] . '<br>' .PHP_EOL;
		else
		    $outstr .= '      air temperature N/A<br>' .PHP_EOL;		
	    }
	    if (strcmp($vals[0], "BEER_STATE") == 0) {
		$beer_state = $vals[1];
	    }
	    if (strcmp($vals[0], "BEER_TEMPERATURE") == 0) {
		if ($beer_state == 0)
		    $outstr .= '      beer temperature ' . $vals[1] . '<br>' .PHP_EOL;
		else
		    $outstr .= '      beer temperature N/A<br>' .PHP_EOL;    
	    }
	}
	$outstr .= '     </div>'.PHP_EOL;
    	$outstr .= '    </div>'.PHP_EOL;
    }

    return $outstr;
}


function liveview()
{
    $outstr  = PHP_EOL;

    $sock = open_socket();
    if ($sock !== false) {
	socket_write($sock, "LIST", 4096);

	/*
	 * Multiple reads until the remote closed the connection
	 */
	$answer = "";
	while (1) {
	    $line = socket_read($sock, 4096);
	    if ($line === '')
		break;
	    $answer .= $line;
	}
	socket_close($sock);
	$arr = explode("\r\n", $answer);

	if (startsWith($arr[0], "212")) {
	    $i = 1;
	    while (1) {
		if (strcmp($arr[$i], ".") == 0)
			break;
		$parts = explode(",", $arr[$i]);
		$outstr .= showunit($parts[1]);
		$i++;
	    }
	}
    }

    return $outstr;
}


?>