<?php
/**
 * CubeCart v6
 * ========================================
 * CubeCart is a registered trade mark of CubeCart Limited
 * Copyright CubeCart Limited 2026. All rights reserved.
 * UK Private Limited Company No. 5323904
 * ========================================
 * Web:   https://www.cubecart.com
 * Email:  hello@cubecart.com
 * License:  GPL-3.0 https://www.gnu.org/licenses/quick-guide-gplv3.html
 */
if (!isset($_SESSION['setup']['permissions'])) {
    $step = 4;
    // Stage 3: Permissions Check
    if (!file_exists($global_file)) {
        touch($global_file);
    }
    $targets = array(
        'backup/',
        'cache/',
        'cache/skin/',
        'files/',
        'images/',
        'images/cache/',
        'images/logos/',
        'images/source/',
        'includes/',
        'includes/extra/',
        'includes/global.inc.php',
        'language/',
    );
    if (file_exists(CC_ROOT_DIR.'/images/uploads')) {
        $targets[] = 'images/uploads/';
    }
    sort($targets);
    $permissions = true;
    foreach ($targets as $target) {
        $target = str_replace('/', '/', $target);
        $perm_status = true;
        if (!is_writable(CC_ROOT_DIR.'/'.$target)) {
            // Attempt to chmod
            if (!chmod(CC_ROOT_DIR.'/'.$target, chmod_writable())) {
                $perm_status = false;
                $permissions = false;
                $errors[] = sprintf($strings['setup']['error_x_not_writable'], $target);
            }
        }
        $GLOBALS['smarty']->append('PERMISSIONS', array('name' => $target, 'status' => (bool)$perm_status));
    }
    if (!$permissions) {
        $proceed = false;
        $retry  = true;
    } else {
        $GLOBALS['smarty']->assign('PERMS_PASS', true);
    }
    $GLOBALS['smarty']->assign('MODE_PERMS', true);
} else {
    ##### UPGRADE #####
    include $global_file;
    $config  = $glob;
    $db   = Database::getInstance($config);
    ## Admin Session thingy

    ## Get version history
    if (($versions = $db->select('CubeCart_history', array('version'), null, array('id' => 'DESC'), false, false, false)) !== false) {
        ## Version 4
        $current = $versions[0]['version'];
        foreach ($versions as $version) {
            $previous[] = $version['version'];
        }
        unset($versions, $version);
    } else {
        // Version 3 - Get version from ini
        $v3_ini = CC_ROOT_DIR.'/includes/ini.inc.php';
        if (file_exists($v3_ini)) {
            include $v3_ini;
            $current = $ini['ver'];
        } else {
            ## We'll assume that it's coming from the latest version 3
            $current = '3.0.20';
        }
        unset($ini, $v3_ini);
    }

    if (!isset($_SESSION['setup']['start_version']) || empty($_SESSION['setup']['start_version'])) {
        $_SESSION['setup']['start_version'] = $current;
        ## We do not want a config update from v5 to v5
        $_SESSION['setup']['config_update'] = version_compare($current, '5.0.0b1', '<') ? true : false;
    }

    if (!isset($_SESSION['setup']['progress']) || is_null($_SESSION['setup']['progress'])) {
        if (isset($_POST['progress']) && version_compare($current, 3, 'ge')) {
            $_SESSION['setup']['progress'] = true;
            httpredir('index.php');
        }
        ## Confirmation
        if (version_compare($current, CC_VERSION, '<')) {
            $step = 4;
            $GLOBALS['smarty']->assign('UPGRADE', array('from' => $current, 'to' => CC_VERSION));
            $_SESSION['setup']['start_version'] = $current;
            $GLOBALS['smarty']->assign('LANG_UPGRADE_FROM_TO', sprintf($strings['setup']['upgrade_from_to'], $current, CC_VERSION));
            $GLOBALS['smarty']->assign('MODE_UPGRADE_CONFIRM', true);
        } else {
            $progress_value = 100;
            $vars['notices'][] = $strings['setup']['already_upgraded'];
            $GLOBALS['smarty']->assign('GUI_MESSAGE', $vars);
            $GLOBALS['smarty']->assign('SHOW_LINKS', true);
            $proceed = false;
        }
    } else {
        $step = 5;
        ## If version is less then 4 or 5 try to fix database encoding
        if (!$_SESSION['setup']['db_converted'] && version_compare($current, '5.0.0', '<')) {
            $db->changeCollation($glob['dbdatabase']);
            $_SESSION['setup']['db_converted'] = true;
        }

        ## Updates from version 3
        if (!$_SESSION['setup']['config_converted'] && version_compare($current, '4.0.0', '<')) {

            ## Version 3: Upgrade config data
            $config_string = $db->select('CubeCart_config', array('array'), array('name' => 'config'));
            if ($config_string) {
                $old_config = unserialize($config_string[0]['array']);
                foreach ($old_config as $key => $value) {
                    $new_config[base64_decode($key)] = stripslashes(base64_decode($value));
                }
                $db->update('CubeCart_config', array('array' => base64_encode(json_encode($new_config))), array('name' => 'config'));
            }
            $_SESSION['setup']['short_lang_identifier'] = $new_config['defaultLang'];
            unset($old_config, $new_config, $config_string);

            ## Upgrade v3 global file to v5 spec
            include $global_file;
            $append = array(
                'adminFolder' => 'admin',
                'adminFile'  => 'admin.php',
                'cache'  => 'file'
            );
            $global = array_merge($glob, $append);
            ksort($global);
            ## Write new file
            unset($global['rootDir'], $global['rootRel'], $global['storeURL']);
            writeGlobalConfig($global, $global_file);
            $_SESSION['setup']['config_converted'] = true;

        ## Updates from version 4
        } elseif (!$_SESSION['setup']['config_converted'] && version_compare($current, '5.0.0', '<')) {

            ## Version 4: Upgrade config data
            $config_string = $db->select('CubeCart_config', array('array'), array('name' => 'config'));
            if ($config_string) {
                $new_config = unserialize($config_string[0]['array']);
                $new_config['offLineContent'] = base64_decode($new_config['offLineContent']);
                $db->update('CubeCart_config', array('array' => base64_encode(json_encode($new_config))), array('name' => 'config'));
            }

            ## Upgrade v4 global file to v5 spec
            include $global_file;
            $append = array('cache'  => 'file');
            $global = array_merge($glob, $append);
            unset($glob['license_key'], $glob['rootDir'], $glob['rootRel'], $glob['storeURL']);
            ksort($glob);
            ## Write new file
            writeGlobalConfig($glob, $global_file);

            $_SESSION['setup']['short_lang_identifier'] = $new_config['defaultLang'];
            $_SESSION['setup']['config_converted'] = true;
            unset($config_string, $new_config, $country_config);
        }


        ## List of versions to upgrade though
        $files_sql = glob($setup_path.'db/upgrade/*.sql');
        if ($files_sql) {
            foreach ($files_sql as $key => $file) {
                $version = str_replace('.sql', '', basename($file));
                if (!isset($previous) || version_compare($version, $current, '>')) {
                    if (isset($updates) && in_array($version, $updates) || version_compare($version, CC_VERSION, '>')) {
                        continue;
                    }
                    $updates[] = $version;
                }
            }
            unset($files_sql);
        }

        $files_php = glob($setup_path.'scripts/upgrade/*.php');
        if ($files_php) {
            foreach ($files_php as $key => $file) {
                $version = str_replace('.php', '', basename($file));
                if (!isset($previous) || version_compare($version, $current, '>')) {
                    if (isset($updates) && in_array($version, $updates) || version_compare($version, CC_VERSION, '>')) {
                        continue;
                    }
                    $updates[] = $version;
                }
            }
            unset($files_php);
        }
        ## Run upgrade scripts (loop)
        if (is_array($updates) && !empty($updates)) {
            ## Check for updates to process
            natsort($updates);
            foreach ($updates as $version) {
                $GLOBALS['smarty']->assign('UPGRADE', array('from' => $current, 'to' => $version));
                $file_sql = 'db/upgrade/'.$version.'.sql';
                if (file_exists($file_sql)) {
                    ## Process file
                    $db->parseSchema(file_get_contents($file_sql, false));
                }

                $file_php = 'scripts/upgrade/'.$version.'.php';
                if (file_exists($file_php)) {
                    ## Include file
                    include $file_php;
                }
                ## Add version history record if less than current as its added at the end
                if (version_compare(CC_VERSION, '4.0.0') >= 0 && !$db->select('CubeCart_history', false, array('version' => $version))) {
                    $db->insert('CubeCart_history', array('version' => $version, 'time' => time()));
                }
                break;
            }

            ## Set auto-refresh
            $GLOBALS['smarty']->append('REFRESH', true);
        } else {

            ## Check for new language packs in this version and install email templates if required
            $existing_languages = $db->select('CubeCart_email_content', 'DISTINCT `language`');
            $missing_languages  = $languages;

            ## Loop existing languages and remove to leave missing languages array with the ones we need to import
            if ($existing_languages) {
                foreach ($existing_languages as $key => $value) {
                    unset($missing_languages[$value['language']]);
                }
            }
            ## Import missing language email templates if they exist... pukka
            if (is_array($missing_languages)) {
                foreach ($missing_languages as $code => $lang) {
                    $language->importEmail('email_'.$code.'.xml');
                }
            }

            ## Set version number
            if (version_compare(CC_VERSION, '4.0.0') >= 0 && !$GLOBALS['db']->select('CubeCart_history', false, array('version' => CC_VERSION))) {
                $GLOBALS['db']->insert('CubeCart_history', array('version' => CC_VERSION, 'time' => time()));
            }

            ## Progressive updates completed
            cc_track_event('cubecart_upgrade', array(
                'from_version' => $_SESSION['setup']['start_version'],
            ));

            ## Redirect to the 'complete' page
            $_SESSION['setup']['complete'] = true;
            httpredir('index.php', 'upgraded');
        }
        $GLOBALS['smarty']->assign('LANG_UPGRADE_IN_PROGRESS', sprintf($strings['setup']['upgrade_in_progress'], $current, $version));
        $GLOBALS['smarty']->append('MODE_UPGRADE_PROGRESS', true);
    }
    $GLOBALS['smarty']->assign('MODE_UPGRADE', true);
}
