standards-map.php

<?php

require_once 'common.inc.php';

use Battis\SimpleCache;
use smtech\StMarksSmarty\StMarksSmarty;

$smarty->assign('name', 'Generate Standards Map');
$smarty->assign('category', 'CurricUplan');

$cache = new Battis\SimpleCache($sql, basename(__FILE__, '.php'));
$cache->setLifetime(Battis\SimpleCache::IMMORTAL_LIFETIME);

/* have we been given a map ID to generate from cached data? */
if (!empty($_REQUEST['map'])) {
    /* initialize our containers empty */
    $courses = array();
    $map = array();
    $level = array();

    /* parse the HTML we've cached */
    $dom = DOMDocument::loadHTML(
        tidy_parse_string(
            $cache->getCache($_REQUEST['map']),
            array('output-xhtml' => true)
        )
    );

    /* walk through the parsed html, table row by table row */
    $xpath = new DOMXpath($dom);
    $parsingCourses = 0;
    $standard = '';
    foreach ($xpath->query("//tr[@class[contains(.,'stds')]]") as $node) {
        /* pull out standards and courses at that standard level and their coverage of that standard */
        $nextStandard = $xpath->query(".//th[@class[contains(.,'hier')]]", $node);
        $nextStandard = trim($nextStandard->length > 0 ? $nextStandard->item(0)->nodeValue: false);

        $course = $xpath->query(".//th[@class='rowgrouplabel']", $node);
        $course = trim($course->length > 0 ? $course->item(0)->nodeValue : false);

        $total = $xpath->query(".//span[@class='spanLevelMatches']", $node);
        $total = trim($total->length > 0 ? $total->item(0)->nodeValue : false);

        /* if we're still parsing courses (between standard title and first standard group)... */
        if ($parsingCourses !== false) {
            /* ...continue until we hit the first standard group */
            if ($nextStandard && $parsingCourses == 1) {
                $parsingCourses = false;
                $standard = $nextStandard;
            } elseif ($nextStandard) {
                $smarty->assign('title', $nextStandard);
                $parsingCourses++;

            /* ...adding courses to our list */
            } elseif ($course) {
                $courses[] = $course;
            }

        /* otherwise, start building the map of standards vs. courses */
        } else {
            if ($nextStandard) {
                $map[] = array(
                    'standard' => array_combine(
                        ['code', 'description'],
                        explode(' - ', $standard)
                    ),
                    "marks" => $level
                );
                $level = array();
                $standard = $nextStandard;
            } else {
                if ($total !== false && !empty($course)) {
                    $level[] = $total;
                }
            }
        }
    }
    $map[] = [
        'standard' => array_combine(array('code', 'description'), explode(' - ', $standard)),
        "marks" => $level
    ];

    /* and send it off to Smarty to display */
    $smarty->assign('courses', $courses);
    $smarty->assign('map', $map);
    $smarty->assign('timestamp', $cache->getCacheTimestamp($_REQUEST['map'])->format('F j, Y'));
    $smarty->display('standards-map/sheet.tpl');
    exit;

/* ...or are we being given data to cache? */
} elseif (!empty($_REQUEST['analysis'])) {
    /* allow access via bookmarklet */
    header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");

    /* the POST parameter is not URL-encoded, which breaks $_POST */
    $data = substr(file_get_contents('php://input'), strlen('analysis='));
    $key = 'analysis.' . md5($data);
    $cache->setCache($key, $data);
    echo $key;
    exit;

/* ...or should we show some instructions? */
} else {
    $smarty->addStylesheet('css/standards-map/instructions.css');
    $smarty->assign('bookmarklet', "javascript: (function () {
    var jsCode = document.createElement('script');
    jsCode.setAttribute('src', 'https://skunkworks.stmarksschool.org/printable-forms/standards-map.js');
  document.body.appendChild(jsCode);
 }());");
    $smarty->display('standards-map/instructions.tpl');
}