<?php

require_once('init.php');
require_once('ParameterParser.php');

/***************************************************************************
 *
 * Error handling functions
 *
 */


function chksql($oSql, $sMsg = "Database request failed")
{
    if (!PEAR::isError($oSql)) return $oSql;

    header('HTTP/1.0 500 Internal Server Error');
    header('Content-type: text/html; charset=utf-8');

    $sSqlError = $oSql->getMessage();

    echo <<<INTERNALFAIL
<html>
  <head><title>Internal Server Error</title></head>
  <body>
    <h1>Internal Server Error</h1>
    <p>Nominatim has encountered an internal error while accessing the database.
       This may happen because the database is broken or because of a bug in
       the software. If you think it is a bug, feel free to report
       it over on <a href="https://github.com/openstreetmap/Nominatim/issues">
       Github</a>. Please include the URL that caused the problem and the
       complete error details below.</p>
    <p><b>Message:</b> $sMsg</p>
    <p><b>SQL Error:</b> $sSqlError</p>
    <p><b>Details:</b> <pre>
INTERNALFAIL;

    if (CONST_Debug) {
        var_dump($oSql);
    } else {
        echo "<pre>\n".$oSql->getUserInfo()."</pre>";
    }

    echo "</pre></p></body></html>";
    exit;
}

function failInternalError($sError, $sSQL = false, $vDumpVar = false)
{
    header('HTTP/1.0 500 Internal Server Error');
    header('Content-type: text/html; charset=utf-8');
    echo "<html><body><h1>Internal Server Error</h1>";
    echo '<p>Nominatim has encountered an internal error while processing your request. This is most likely because of a bug in the software.</p>';
    echo "<p><b>Details:</b> ".$sError,"</p>";
    echo '<p>Feel free to file an issue on <a href="https://github.com/openstreetmap/Nominatim/issues">Github</a>. ';
    echo 'Please include the error message above and the URL you used.</p>';
    if (CONST_Debug) {
        echo "<hr><h2>Debugging Information</h2><br>";
        if ($sSQL) {
            echo "<h3>SQL query</h3><code>".$sSQL."</code>";
        }
        if ($vDumpVar) {
            echo "<h3>Result</h3> <code>";
            var_dump($vDumpVar);
            echo "</code>";
        }
    }
    echo "\n</body></html>\n";
    exit;
}


function userError($sError)
{
    header('HTTP/1.0 400 Bad Request');
    header('Content-type: text/html; charset=utf-8');
    echo "<html><body><h1>Bad Request</h1>";
    echo '<p>Nominatim has encountered an error with your request.</p>';
    echo "<p><b>Details:</b> ".$sError."</p>";
    echo '<p>If you feel this error is incorrect feel file an issue on <a href="https://github.com/openstreetmap/Nominatim/issues">Github</a>. ';
    echo 'Please include the error message above and the URL you used.</p>';
    echo "\n</body></html>\n";
    exit;
}


/***************************************************************************
 * HTTP Reply header setup
 */

if (CONST_NoAccessControl) {
    header("Access-Control-Allow-Origin: *");
    header("Access-Control-Allow-Methods: OPTIONS,GET");
    if (!empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])) {
        header("Access-Control-Allow-Headers: ".$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']);
    }
}
if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') exit;

if (CONST_Debug) header('Content-type: text/html; charset=utf-8');
