#!/usr/local/bin/php -nc/usr/local/directadmin/plugins/phpversionlist/php.ini
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<?php

if (!function_exists('shell_exec')) {
    echo '<div class="alert alert-danger"><strong>PHP Error:</strong> function shell_exec is not available or disabled.<br>Plugin can not be used until this function is available.</div>';
    return;
}

require_once(realpath(pathinfo($_SERVER['SCRIPT_NAME'], PATHINFO_DIRNAME) . '/../httpsocket.php'));

$supportedVersionsDataFile = pathinfo($_SERVER['SCRIPT_NAME'], PATHINFO_DIRNAME) . '/../supportedVersions';

// refresh the supportedVersions if the file not exists or the data is older than 24 hours
if (!file_exists($supportedVersionsDataFile) || (time() - filemtime($supportedVersionsDataFile) > 24 * 3600)) {
    require_once(realpath(pathinfo($_SERVER['SCRIPT_NAME'], PATHINFO_DIRNAME) . '/supportedVersions.php'));

    $data = fopen($supportedVersionsDataFile, "w+");
    fwrite($data, serialize(getSupportedVersions()));
    fclose($data);
}

$supportedVersions = unserialize(file_get_contents($supportedVersionsDataFile));

function colorize($version)
{
    global $supportedVersions;
    $colorized = "";

    if (empty($version)) {
        return $colorized;
    }

    $allBranches = [];
    foreach ($supportedVersions as $supportedVersion) {
        $allBranches[] = $supportedVersion['branch'];

        if (preg_match('/^' . $supportedVersion['branch'] . '/', $version)) {
            $color = ($supportedVersion['status'] === 'security') ? '#f93' : 'black';
            $color = ($supportedVersion['status'] === 'stable') ? '#9c9' : $color;

            $colorized = '<span style="font-weight: bold; color: ' . $color . '">' . $version . '</span>';
            break;
        }
    }

    if (empty($colorized)) {
        if ((float)$version < (float)min($allBranches)) {
            $colorized = '<span style="font-weight: bold; color: #f33">' . $version . '</span>';
        } else {
            $colorized = $version;
        }
    }

    return $colorized;
}

function phpVersionCompare($a, $b)
{
    $a = strip_tags($a);
    $b = strip_tags($b);

    if ($a == $b) {
        return 0;
    }
    return ($a < $b) ? -1 : 1;
}

// fetch PHP versions via an API call (no rights to access the custombuild options.conf file)
$sock = new HTTPSocket;
$sock->connect("ssl://" . $_SERVER['HTTP_HOST'], $_SERVER['SERVER_PORT']);
$sock->set_login($_SERVER['USER']);
$sock->query('/CMD_API_SYSTEM_INFO');
$systemInfo = $sock->fetch_parsed_body();

$systemInfo['php']  = colorize($systemInfo['php']);
$systemInfo['php2'] = colorize(isset($systemInfo['php2']) ? $systemInfo['php2'] : '');
$systemInfo['php3'] = colorize(isset($systemInfo['php3']) ? $systemInfo['php3'] : '');
$systemInfo['php4'] = colorize(isset($systemInfo['php4']) ? $systemInfo['php4'] : '');
//TODO: activate once you don't support PHP 5 anymore!
//$systemInfo['php2'] = colorize($systemInfo['php2'] ?? '');
//$systemInfo['php3'] = colorize($systemInfo['php3'] ?? '');
//$systemInfo['php4'] = colorize($systemInfo['php4'] ?? '');

/**
 *
 * value should be string that is passed!
 */
function translateValueToVersion($phpEnabled, $value)
{
    global $systemInfo;

    if ($phpEnabled != 'ON') {
        return;
    }

    if ($value === '1') {
        return $systemInfo['php'];
    } elseif ($value === '2') {
        return $systemInfo['php2'];
    } elseif ($value === '3') {
        return $systemInfo['php3'];
    } elseif ($value === '4') {
        return $systemInfo['php4'];
    } elseif ($value === '0') {
        return 'Off';
    }

    return;
}

// read all the directadmin users data config files. /dev/null added to have at least 2 files to search on as with only
// 1 match (domain) it won't show you the path.
// ignore files which ends with .hotlink.conf
$phpConfigData = shell_exec("grep ^php `find /usr/local/directadmin/data/users/*/domains -type f -regex '.*\.conf$' | grep -P '.*(?<!\.hotlink).conf$'` /dev/null");
preg_match_all("/users\/(?P<user>.*)\/domains\/(?P<domain>.*)\.conf\:(?P<data>.*)\n/U", $phpConfigData, $matches);

$list   = [];
$params = []; // array used to know later which phpx_select parameters there are
foreach ($matches[0] as $k => $v) {
    $user   = $matches['user'][$k];
    $domain = $matches['domain'][$k];
    $data   = $matches['data'][$k];

    list($param, $val) = explode("=", $data);
    $params[]                     = $param;
    $list[$user][$domain][$param] = $val;
}

// not all config files have a variable php1_select, this is causing an incorrect count in the summary table
// my feeling is that when you create an account and you do not touch the PHP version settings that the php1_select variable
// will not be in the file and DirectAdmin is for them taking the first PHP version version.
// also a second correction will be done if the php variable has the value OFF, unset all other variables from the data array.
foreach ($list as $user => $domains) {
    foreach ($domains as $domain => $data) {
        if ($data['php'] === 'ON' && !key_exists('php1_select', $data)) {
            $data['php1_select']  = '1';
            $list[$user][$domain] = $data;
        } else {
            if ($data['php'] === 'OFF') {
                $list[$user][$domain] = ['php' => 'OFF'];
            }
        }
    }
}

/*
// make the values unique
$params = array_unique($params);
var_dump($params);
*/

$keys        = array_keys($systemInfo);
$versionKeys = preg_grep('/^php([2-4]?)$/', $keys);

// build an array with key the php install id (1, .., 4) and as value the php version
$phpVersions = [];
foreach ($versionKeys as $keyValue) {
    $num = substr($keyValue, -1, 1);
    $num = !is_numeric($num) ? 1 : $num;

    $phpVersions[$num] = $systemInfo[$keyValue];
}
uasort($phpVersions, 'phpVersionCompare');

// create a multidimensional array with first key the first / second php selector and as second key the phpversion (key)
$stats = [];
for ($i = 1; $i <= 2; $i++) {
    for ($j = 1; $j <= 4; $j++) {
        $stats[$i][$j] = 0;
    }
}

// loop to build up the stats
foreach ($list as $user => $domains) {
    foreach ($domains as $domain => $settings) {
        // only want to take phpx_select and use the value
        foreach ($settings as $k => $v) {
            if (!preg_match('/php([1-2])_select/', $k, $matches) || intval($v) == 0) {
                continue;
            }

            $stats[$matches[1]][$v]++;
        }
    }
}

?>
<h3 style="padding-left: 10px">PHP version summary</h3>
<div class="table-responsive px-3">
    <table class="table table-striped table-hover" cellspacing="1" cellpadding="3" style="width: auto !important;">
        <thead>
        <tr>
            <th scope="col"></th>
            <th scope="col">First PHP</th>
            <th scope="col">Second PHP</th>
        </tr>
        </thead>

        <tbody>
        <?php

        foreach ($phpVersions as $key => $version) {
            if (empty($version)) {
                continue;
            }

            echo "
            <tr>
                <th scope=\"row\">PHP {$version}</th>
                <td class=\"text-end\">{$stats[1][$key]}</td>
                <td class=\"text-end\">{$stats[2][$key]}</td>
            </tr>\n";
        }
        ?>
        </tbody>
    </table>
</div>

<h3 style="padding-left: 10px">PHP version overview per domain</h3>
<div class="table-responsive px-3">
    <table class="table table-striped table-hover" cellspacing="1" cellpadding="3">
        <thead>
        <tr>
            <th scope="col">User</th>
            <th scope="col">Domain</th>
            <th scope="col">PHP</th>
            <th scope="col">First PHP</th>
            <th scope="col">Second PHP</th>
        </tr>
        </thead>

        <tbody>
        <?php
        foreach ($list as $user => $domains) {
            foreach ($domains as $domain => $settings) {
                $phpEnabled = ($settings['php'] == 'ON') ? '<span style="color: green">ON</span>' : '<span style="color: red; font-weight: bold">OFF</span>';
                $firstPhp   = (isset($settings['php1_select'])) ? $settings['php1_select'] : '1';
                $firstPhp   = translateValueToVersion($settings['php'], $firstPhp);
                $secondPhp  = (isset($settings['php2_select'])) ? $settings['php2_select'] : null;
                $secondPhp  = translateValueToVersion($settings['php'], $secondPhp);

                echo "<tr><td>{$user}</td> <td>{$domain}</td> <td>{$phpEnabled}</td> <td>{$firstPhp}</td> <td>{$secondPhp}</td></tr>\n";
            }
        }
        ?>
        </tbody>
    </table>
</div>