daverix/lunch.php

## lunch.php
<?php
function loadDocument($url) {
    $pageContent = file_get_contents($url);
    $document = new DOMDocument();
    $document->loadHtml($pageContent);
    return $document;
}

if($_SERVER['REQUEST_METHOD'] == 'POST') {
    $restaurants['af'] = function($weekday) {
        $document = loadDocument('http://www.butlercatering.se/print/11');

        $xpath = new DOMXpath($document);
        $days = $xpath->query("//div[@class='field-day']");
        if(count($days) == 0) {
            echo "Menu is empty or html is changed";
            return;
        }

        if($weekday > 5) {
            echo "Menu not available for today";
            return;
        }

        $today = $days->item($weekday-1);
        $nodes = $today->childNodes;
        $menuText="";
        foreach($nodes as $node) {
            if($node->nodeName != "h3") {
                $menuText .= trim($node->nodeValue). "\n";
            }
        }
        header("Content-type: application/json");
        echo "{\"response_type\": \"in_channel\", \"text\": \"$menuText\"}";
    };
    $restaurants['mektagonen'] = function($weekday) {
        $document = loadDocument('http://restaurangmektagonen.se/lunch');

        $xpath = new DOMXpath($document);
        $days = $xpath->query("//p[@class='mat']");
        if(count($days) == 0) {
            echo "Menu is empty or html is changed";
            return;
        }

        if($weekday > 5) {
            echo "Menu not available for today";
            return;
        }

        $today = $days->item($weekday-1);
        $menuText="";
        foreach($nodes as $node) {
            if($node->nodeName != "br") {
                $menuText .= trim($node->nodeValue). "\n";
            }
        }
        header("Content-type: application/json");
        echo "{\"response_type\": \"in_channel\", \"text\": \"$menuText\"}";
    };

    $text = $_POST['text'];
    $key = strtolower($text);
    if(array_key_exists($key, $restaurants)) {
        $weekday = 1; //date('N');
        $restaurants[$key]($weekday);
    } elseif($text == "restaurants") {
        $restaurantsText = implode("\n", array_keys($restaurants));
        echo "Available restaurants:\n$restaurantsText\n";
    } else {
        echo "$text is not a valid restaurant.\n\nType \"/lunchmenu restaurants\" for a list of configured restaurants.";
    }
} else {
?>
<!Doctype html>
<html>
<title>Lunchbot</title>
<body>
<form action="/lunch.php" method="post">
/lunchmenu
<input type="text" name="text" />
<input type="submit" value="Send" />
</form>
<body>
</html>
<?php
}
?>
	<?php
	function loadDocument($url) {
	$pageContent = file_get_contents($url);
	$document = new DOMDocument();
	$document->loadHtml($pageContent);
	return $document;
	}

	if($_SERVER['REQUEST_METHOD'] == 'POST') {
	$restaurants['af'] = function($weekday) {
	$document = loadDocument('http://www.butlercatering.se/print/11');

	$xpath = new DOMXpath($document);
	$days = $xpath->query("//div[@class='field-day']");
	if(count($days) == 0) {
	echo "Menu is empty or html is changed";
	return;
	}

	if($weekday > 5) {
	echo "Menu not available for today";
	return;
	}

	$today = $days->item($weekday-1);
	$nodes = $today->childNodes;
	$menuText="";
	foreach($nodes as $node) {
	if($node->nodeName != "h3") {
	$menuText .= trim($node->nodeValue). "\n";
	}
	}
	header("Content-type: application/json");
	echo "{\"response_type\": \"in_channel\", \"text\": \"$menuText\"}";
	};
	$restaurants['mektagonen'] = function($weekday) {
	$document = loadDocument('http://restaurangmektagonen.se/lunch');

	$xpath = new DOMXpath($document);
	$days = $xpath->query("//p[@class='mat']");
	if(count($days) == 0) {
	echo "Menu is empty or html is changed";
	return;
	}

	if($weekday > 5) {
	echo "Menu not available for today";
	return;
	}

	$today = $days->item($weekday-1);
	$menuText="";
	foreach($nodes as $node) {
	if($node->nodeName != "br") {
	$menuText .= trim($node->nodeValue). "\n";
	}
	}
	header("Content-type: application/json");
	echo "{\"response_type\": \"in_channel\", \"text\": \"$menuText\"}";
	};

	$text = $_POST['text'];
	$key = strtolower($text);
	if(array_key_exists($key, $restaurants)) {
	$weekday = 1; //date('N');
	$restaurants[$key]($weekday);
	} elseif($text == "restaurants") {
	$restaurantsText = implode("\n", array_keys($restaurants));
	echo "Available restaurants:\n$restaurantsText\n";
	} else {
	echo "$text is not a valid restaurant.\n\nType \"/lunchmenu restaurants\" for a list of configured restaurants.";
	}
	} else {
	?>
	<!Doctype html>
	<html>
	<title>Lunchbot</title>
	<body>
	<form action="/lunch.php" method="post">
	/lunchmenu
	<input type="text" name="text" />
	<input type="submit" value="Send" />
	</form>
	<body>
	</html>
	<?php
	}
	?>