<?php 

// Get the referrer
$request=$_SERVER['REQUEST_URI'];

// convert to lower case
$request = strtolower($request);

// strip tid=whatever& out of the URI
$request = preg_replace("(tid=[0-9]*&)", "", $request);

// strip ekmensel whatever out of the URI
$request = preg_replace("(&ekmensel=[a-zA-Z0-9_]*)", '', $request);

//To deal with the bad URL

$request = str_ireplace('/404/smart-redirects/?404;https://www.medschool.umaryland.edu:443', '', $request);$request = str_ireplace('/404/smart-redirects/?404;https://medschool.umaryland.edu:443', '', $request);$request = str_ireplace('/404/smart-redirects/?404;https://medschool-stage.umaryland.edu:443', '', $request);


//MPRC
$request = str_ireplace('/404/smart-redirects/?404;http://stage-mprc.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/smart-redirects/?404;http://mprc.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.mprc.umaryland.edu:443', '', $request);
//CIHEB
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.ciheb.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://ciheb.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-ciheb.umaryland.edu:443', '', $request);
//BIOMET
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.biomet.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://biomet.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-biomet.umaryland.edu:443', '', $request);
//CIM
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.cim.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://cim.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-cim.umaryland.edu:443', '', $request);
//CSMH
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.csmh.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://csmh.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-csmh.umaryland.edu:443', '', $request);
//Lifesciences
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.lifesciences.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://lifesciences.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-lifesciences.umaryland.edu:443', '', $request);
//IHV
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.ihv.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://ihv.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-ihv.umaryland.edu:443', '', $request);
//JACQUES
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.jacques.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://jacques.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-jacques.umaryland.edu:443', '', $request);
//MDPHD
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.mdphd.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://mdphd.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-mdphd.umaryland.edu:443', '', $request);
//SBIRT
$request = str_ireplace('/404/Smart-Redirects/?404;http://www.sbirt.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://sbirt.umaryland.edu:443', '', $request);
$request = str_ireplace('/404/Smart-Redirects/?404;http://stage-sbirt.umaryland.edu:443', '', $request);

// prepare to read the redirects file
$filename = "redirects.csv";
$handle = fopen($filename, "r") or die("Unable to open file!");

// assume the worst case 
$best_percent = -1;
$redirect_target = '';

// open the CSV file with the redirects
if (($handle = fopen($filename, "r")) !== FALSE) 
{
    // while there is data to read, get a line
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) 
    {           
        // if any bits are blank, skip this entry
        if('' == trim($data[0])) continue;
        if('' == trim($data[1])) continue;
        
        // work out how similar the url is to the one the user tried
        similar_text(strtolower(str_ireplace('aspx', 'aspy', $request)) , strtolower(str_ireplace('aspx', 'aspy', $data[0])), $percent);  

        // if it's the best one so far then remember that
        if($percent > $best_percent)
        {
            $best_percent = $percent;
            $redirect_target = $data[1];
        }
    }
    // close the file
    fclose($handle);
}

// if the best match was better than a 99% match
if($best_percent > 99)    
{
    // issue a 301 redirect 
    header("HTTPS/1.0 301 Moved Permanently");
    
    // if the target URL has a :// send it as a relative redirect
    // otherwise send it as a fully qualified (external) redirect
    if ( strpos($redirect_target, '://') !== false) 
    {
        header("Location: " . $redirect_target);
    } 
    else 
    {
        header("Location: http://" . $_SERVER['HTTP_HOST'] . "/" . $redirect_target);
    }
    exit();
}


// if there was not match in excess of the target % then send a 404 and write in the 404 page HTML
header("HTTP/1.0 404 Not Found");
if (($handle = fopen("../index.php", "r")) !== FALSE) 
{
    // while there is data to read, get a line
    while($data = fgets($handle, 1000))
    {      
        echo $data; 
    }
    // close the file
    fclose($handle);
}
else
{
    // if the 404 file was not found, output a generice message
    echo "Error 404, page not found.";
}


exit();

?>

<?php 
//CSV File
///404/smart-redirects/redirects.csv
?>