<?php
define( 'YOURLS_ADMIN', true );
define( 'YOURLS_INSTALLING', true );
require_once( dirname( __DIR__ ).'/includes/load-yourls.php' );

$error   = array();
$warning = array();
$success = array();

// Check pre-requisites
if ( !yourls_check_PDO() ) {
    $error[] = yourls__( 'PHP extension for PDO not found' );
    yourls_debug_log( 'PHP PDO extension not found' );
}

if ( !yourls_check_database_version() ) {
    $error[] = yourls_s( '%s version is too old. Ask your server admin for an upgrade.', 'MySQL' );
    yourls_debug_log( 'MySQL version: ' . yourls_get_database_version() );
}

if ( !yourls_check_php_version() ) {
    $error[] = yourls_s( '%s version is too old. Ask your server admin for an upgrade.', 'PHP' );
    yourls_debug_log( 'PHP version: ' . PHP_VERSION );
}

// Is YOURLS already installed ?
if ( yourls_is_installed() ) {
    $error[] = yourls__( 'YOURLS already installed.' );
    // check if .htaccess exists, recreate otherwise. No error checking.
    if( !file_exists( YOURLS_ABSPATH.'/.htaccess' ) ) {
        yourls_create_htaccess();
    }
}

// Start install if possible and needed
if ( isset($_REQUEST['install']) && count( $error ) == 0 ) {
    // Create/update .htaccess file
    if ( yourls_create_htaccess() ) {
        $success[] = yourls__( 'File <tt>.htaccess</tt> successfully created/updated.' );
    } else {
        $warning[] = yourls__( 'Could not write file <tt>.htaccess</tt> in YOURLS root directory. You will have to do it manually. See <a href="http://yourls.org/htaccess">how</a>.' );
    }

    // Create SQL tables
    $install = yourls_create_sql_tables();
    if ( isset( $install['error'] ) )
        $error = array_merge( $error, $install['error'] );
    if ( isset( $install['success'] ) )
        $success = array_merge( $success, $install['success'] );
}


// Start output
yourls_html_head( 'install', yourls__( 'Install YOURLS' ) );
?>
<div id="login">
    <form method="post" action="?"><?php // reset any QUERY parameters ?>
        <p>
            <img src="<?php yourls_site_url(); ?>/images/yourls-logo.svg" id="yourls-logo" alt="YOURLS" title="YOURLS" />
        </p>
        <?php
            // Print errors, warnings and success messages
            foreach ( array ('error', 'warning', 'success') as $info ) {
                if ( count( $$info ) > 0 ) {
                    echo "<ul class='$info'>";
                    foreach( $$info as $msg ) {
                        echo '<li>'.$msg."</li>\n";
                    }
                    echo '</ul>';
                }
            }

            // Display install button or link to admin area if applicable
            if( !yourls_is_installed() && !isset($_REQUEST['install']) ) {
                echo '<p style="text-align: center;"><input type="submit" name="install" value="' . yourls__( 'Install YOURLS') .'" class="button" /></p>';
            } else {
                if( count($error) == 0 )
                    echo '<p style="text-align: center;">&raquo; <a href="'.yourls_admin_url().'" title="' . yourls__( 'YOURLS Administration Page') . '">' . yourls__( 'YOURLS Administration Page') . '</a></p>';
            }
        ?>
    </form>
</div>
<?php yourls_html_footer(); ?>
