<?php

// files needed to be loaded before any ts lib sapi interface actions
//
function weaverx_process_options_themes(): bool
{

    if (weaverx_submitted('set_subtheme')) {    // invoked from Weaver Xtreme Subthemes tab (this file)
        if (isset($_POST['theme_picked'])) {
            $theme = weaverx_filter_textarea($_POST['theme_picked']);

            if (weaverx_activate_subtheme($theme)) {
                weaverx_save_msg(__("Subtheme Selected: ", 'weaver-xtreme' /*adm*/) . $theme);
            } else {
                weaverx_save_msg(__("Invalid Subtheme file detected. Your installation of Weaver Xtreme may be broken.", 'weaver-xtreme' /*adm*/));
            }
        } else {
            weaverx_save_msg(__("Please select a subtheme.", 'weaver-xtreme' /*adm*/));
        }

        return true;
    }

    if (weaverx_submitted('save_mytheme')) {    // invoked from Save/Restore tab
        weaverx_save_msg(__("Current settings saved in WordPress database.", 'weaver-xtreme' /*adm*/));
        global $weaverx_opts_cache;
        if (!$weaverx_opts_cache) {
            $func_opt = WEAVER_GET_OPTION;
            $weaverx_opts_cache = $func_opt(apply_filters('weaverx_options', WEAVER_SETTINGS_NAME), array());
        }
        if (current_user_can('manage_options')) {
            $compressed = array_filter($weaverx_opts_cache, 'strlen'); // filter out all null options (strlen == 0)
            update_option(apply_filters('weaverx_options', 'weaverx_settings_backup'), $compressed);
            if (apply_filters('weaverx_xtra_type', '+backup') != 'inactive') {
                delete_option('weaverx_plus_backup');
            }
        }

        return true;
    }

    if (weaverx_submitted('restore_mytheme')) {    // invoked from Save/Restore tab
        global $weaverx_opts_cache;
        $saved = get_option(apply_filters('weaverx_options', 'weaverx_settings_backup'), array());
        if (!empty($saved)) {
            $weaverx_opts_cache = $saved;
            weaverx_wpupdate_option(WEAVER_SETTINGS_NAME, $weaverx_opts_cache);
        }
        weaverx_save_msg(__("Current settings restored from WordPress database.", 'weaver-xtreme' /*adm*/));

        return true;
    }

    if (weaverx_submitted('remove_v5_settings')) {    // invoked from Save/Restore tab
        // unlink css files for editor
        $save_dir = weaverx_f_uploads_base_dir() . '/weaverx5-subthemes';
        @unlink($save_dir . '/style-weaverxt.css');
        @unlink($save_dir . '/block-editor-style-wvrx.css');
        @unlink($save_dir . '/editor-early-style-wvrx.css');
        @rmdir($save_dir);
        delete_option('weaverx5_settings');
        weaverx_save_msg(__("Weaver Xtreme 5 Beta settings and style files deleted.", 'weaver-xtreme' /*adm*/));

        return true;
    }

    if (weaverx_submitted('hide_thumbs')) {
        $hide = weaverx_getopt('_hide_theme_thumbs');
        weaverx_setopt('_hide_theme_thumbs', !$hide);

        return true;
    }

    // save/restore options
    if (weaverx_submitted('weaverx_clear_messages')) {
        return true;
    }
    if (weaverx_submitted('reset_weaverx')) {
        if (!current_user_can('manage_options')) {
            wp_die(__('You do not have the capability to do that.', 'weaver-xtreme' /*adm*/));
        }
        // delete everything!
        weaverx_save_msg(__('All Weaver Xtreme settings have been reset to the defaults.', 'weaver-xtreme'));
        delete_option(apply_filters('weaverx_options', WEAVER_SETTINGS_NAME));
        global $weaverx_opts_cache;
        $weaverx_opts_cache = false;    // clear the cache
        weaverx_init_opts('reset_weaverx');
        delete_option(apply_filters('weaverx_options', 'weaverx_settings_backup'));

        do_action('weaverxplus_admin', 'reset_weaverxplus');

        update_user_meta(get_current_user_id(), 'tgmpa_dismissed_notice', 0);     // reset the dismiss on the plugin loader

        return true;
    }

    if (weaverx_submitted('uploadtheme') && function_exists('weaverx_loadtheme')) {
        weaverx_loadtheme();

        return true;
    }

    return false;
}

function weaverx_activate_subtheme($theme): bool
{
    /* load settings for specified theme */
    global $weaverx_opts_cache;

    /* build the filename - theme files stored in /wp-content/themes/weaver-xtreme/subthemes/

    Important: the following code assumes that any of the pre-defined theme files won't have
    and end-of-line character in them, which should be true. A user could muck about with the
    files, and possibly break this assumption. This assumption is necessary because the WP
    theme rules allow 'file', but not 'file get contents'. Other than that, the following code
    is really the same as the 'theme' section of weaverx_upload_theme() in the pro library
    */

    $ext = '.wxt';

    $filename = get_template_directory() . '/subthemes/' . $theme . $ext;

    if (!weaverx_f_exists($filename)) {
        $filename = str_replace('.wxt', '.wxb', $filename);
        if (!weaverx_f_exists($filename)) {
            return false;
        } else {
            $ext = '.wxb';
        }
    }

    $contents = weaverx_f_get_contents($filename);    // use either real (pro) or file (standard) version of function

    if (empty($contents)) {
        return false;
    }

    if (substr($contents, 0, 10) != 'WXT-V01.00' && substr($contents, 0, 10) != 'WVA-V01.00') {
        if ($ext == '.wxb' && substr($contents, 0, 10) != 'WXB-V01.00' && substr($contents, 0, 10) != 'WVB-V01.00') {
            return false;
        }
    }

    $restore = unserialize(substr($contents, 10));

    if (!$restore) {
        return false;
    }
    $version = weaverx_getopt('weaverx_version_id');    // get something to force load

    // need to clear some settings
    // first, pickup the per-site settings that aren't theme related...
    $new_cache = array();
    if ($ext == '.wxt') {
        foreach ($weaverx_opts_cache as $key => $val) {
            if ($key[0] == '_') {    // these are non-theme specific settings
                $new_cache[$key] = $weaverx_opts_cache[$key];    // clear
            }
        }
    }

    $opts = weaverx_ts_convert4_to_5($restore['weaverx_base']);    // base opts
    weaverx_delete_all_options();

    foreach ($new_cache as $key => $val) {    // set the values we need to keep
        weaverx_setopt($key, $new_cache[$key], false);
    }
    foreach ($opts as $key => $val) {
        if ($key[0] == '_' && $ext != '.wxb') {
            continue;
        }    // should be here
        weaverx_setopt($key, $val, false);    // overwrite with saved theme values
    }

    weaverx_setopt('theme_filename', $theme);
    weaverx_setopt('last_option', 'Weaver Xtreme');

    weaverx_save_opts('set subtheme');    // OK, now we've saved the options, update them in the DB

    return true;
}

//================= moved from old lib-admin ================
//============================================ form builder ====================================

function weaverx_form_show_options($weaverx_olist, $begin_table = true, $end_table = true): void
{
    /* output a list of options - this really does the layout for the options defined in an array */
    if ($begin_table) {
        ?>
        <div>
        <table class="optiontable" style="margin-top:6px;">
        <?php
    }
    foreach ($weaverx_olist as $value) {
        $value['type'] = weaverx_fix_type($value['type']);
        switch ($value['type']) {
            case 'align':
                weaverx_form_align($value);
                break;
            case 'align_standard':
                weaverx_form_align_standard($value);
                break;
            case 'break':
                weaverx_form_break($value);
                break;
            case 'checkbox':
                weaverx_form_checkbox($value);
                break;
            case 'ctext':
                weaverx_form_ctext($value);
                break;
            case 'color':
                weaverx_form_color($value);
                break;
            case 'custom_css':
                weaverx_custom_css($value);
                break;
            case 'endheader':
                echo '<!-- end header -->';
                break;
            case 'fi_align':
                weaverx_form_fi_align($value);
                break;
            case 'fi_location':
                weaverx_from_fi_location($value);
                break;
            case 'fi_location_post':
                weaverx_from_fi_location($value, true);
                break;
            case 'fixedtop':
                weaverx_form_fixedtop($value);
                break;
            case 'header':
                weaverx_form_header($value);
                break;
            case 'header_area':
                weaverx_form_header_area($value);
                break;
            case 'header0':
                weaverx_form_header($value, true);
                break;
            case 'inactive':
                weaverx_form_inactive($value);
                break;
            case 'link':
                weaverx_form_link($value);
                break;
            case 'menu_opts':
                weaverx_form_menu_opts($value, false);
                break;
            case 'menu_opts_submit':
                weaverx_form_menu_opts($value, true);
                break;
            case 'note':
                weaverx_form_note($value);
                break;
            case 'radio':
                weaverx_form_radio($value);
                break;
            case 'rounded':
                weaverx_form_rounded($value);
                break;
            case 'select_hide':
                weaverx_form_select_hide($value);
                break;
            case 'select_id':
                weaverx_form_select_id($value);
                break;
            case 'select_alt_theme':
                weaverx_form_select_alt_theme($value);
                break;
            case 'select_layout':
                weaverx_form_select_layout($value);
                break;
            case 'shadows':
                weaverx_form_shadows($value);
                break;
            case 'subheader':
                weaverx_form_subheader($value);
                break;
            case 'subheader_alt':
                weaverx_form_subheader_alt($value);
                break;
            case 'submit':
                weaverx_form_submit($value);
                break;
            case 'text':
            case 'widetext':
                weaverx_form_text($value);
                break;
            case 'text_xy':
                weaverx_form_text_xy($value);
                break;
            case 'text_xy_em':
                weaverx_form_text_xy($value, 'X', 'Y', 'em');
                break;
            case 'text_xy_percent':
                weaverx_form_text_xy($value, 'X', 'Y', '%');
                break;
            case 'text_tb':
                weaverx_form_text_xy($value, 'T', 'B');
                break;
            case 'text_lr':
                weaverx_form_text_xy($value, 'L', 'R');
                break;
            case 'text_lr_em':
                weaverx_form_text_xy($value, 'L', 'R', 'em');
                break;
            case 'text_lr_percent':
                weaverx_form_text_xy($value, 'L', 'R', '%');
                break;
            case 'textarea':
                weaverx_form_textarea($value);
                break;
            case 'titles':
                weaverx_form_text_props($value, 'titles');
                break;
            case 'titles_area':
                weaverx_form_text_props($value, 'area');
                break;
            case 'titles_content':
                weaverx_form_text_props($value, 'content');
                break;
            case 'titles_menu':
                weaverx_form_text_props($value, 'menu');
                break;
            case 'titles_text':
                weaverx_form_text_props($value, 'text');
                break;
            case 'val_num':
                weaverx_form_val($value, '');
                break;
            case 'val_percent':
                weaverx_form_val($value, '%');
                break;
            case 'val_px':
                weaverx_form_val($value, 'px');
                break;
            case 'val_em':
                weaverx_form_val($value, 'em');
                break;
            case 'widget_area':
                weaverx_form_widget_area($value, false);
                break;
            case 'widget_area_submit':
                weaverx_form_widget_area($value, true);
                break;
            default:
                weaverx_form_subheader_alt($value);
                break;
        }

    }
    if ($end_table) {
        ?>
        </table></div> <!-- close previous tab div -->
        <br/>
        <?php
    }
}

function weaverx_fix_type($type)
{
    return apply_filters('weaverx_xtra_type', $type);
}

function weaverx_form_inactive($value, $reason = ''): void
{
    if ($reason == '') {
        $reason = '<small>' . esc_html__('Weaver Xtreme Plus Options', 'weaver-xtreme' /*adm*/) . '&nbsp;</small>';
    }
    if (!isset($value['name']) || !isset($value['id']) || !isset($value['info'])) {     // probably an '=submit'
        return;
    }
    $title = $value['name'];
    if (strlen($title) < 1) {
        $title = ' ';
    }        // make code work for invisibles
    if ($title[0] == '#') {
        $title = substr($title, 4);
    }    // strip color
    echo '  <tr>' . "\n";
    ?>
    <th scope="row" style="width:200px;"><?php /* NO SAPI SETTING */
        echo '<span style="color:#777;float:right;">' . $title . ':&nbsp;</span>';
        if (!empty($value['help'])) {
            weaverx_help_link($value['help'], esc_html__('Help for ', 'weaver-xtreme' /*adm*/) . $title);
        }
        ?>
    </th>
    <td style="color:#777;"><?php echo $reason; ?>
        <input type="hidden" name="<?php weaverx_sapi_main_name($value['id']); ?>" id="<?php echo $value['id']; ?>"
               value="<?php if (weaverx_getopt($value['id']) != "") {
                   weaverx_esc_textarea(weaverx_getopt($value['id']));
               } else {
                   echo '';
               } ?>"/>
    </td>
    <?php
    if ($value['info'] != '') {
        echo('<td style="padding-left:10px;color:#777;font-size:x-small;">');
        echo $value['info'];
        echo("</td>\n");
    }
    ?>
    </tr>
    <?php
}


function weaverx_echo_name($value, $add_icon = ''): void
{
    $l = $add_icon . $value['name'];
    if (isset($value['id'])) {
        $icon = $value['id'];
    }
    if (!isset($icon) || !$icon) {
        $icon = ' ';
    }
    if (strlen($l) > 4 && $l[0] == '#') {
        echo '<span style="color:' . substr($l, 0, 4) .
            ';">' . substr($l, 4) . '</span>';
    } elseif ($icon[0] == '-') {                      // add a leading icon
        echo '<span class="dashicons dashicons-' . substr($icon, 1) . '">' . $l . '</span>';
    } else {
        echo $l;
    }
}

function weaverx_form_ctext($value, $val_only = false): void
{

    $pclass = 'color {hash:true, adjust:false}';    // starting with V 1.3, allow text in color pickers
    $img_css = '<img src="' . esc_url(get_template_directory_uri() . '/assets/images/theme/css.png') . '" alt="css" />';
    $img_hide = esc_url(get_template_directory_uri() . '/assets/images/theme/hide.png');
    $img_show = esc_url(get_template_directory_uri() . '/assets/images/theme/show.png');
    $help_file = esc_url(get_template_directory_uri() . '/help/css-help.html');
    $css_id = $value['id'] . '_css';
    $css_id_text = weaverx_getopt($css_id);
    if ($css_id_text && !weaverx_getopt('_hide_auto_css_rules')) {
        $img_toggle = $img_hide;
    } else {
        $img_toggle = $img_show;
    }
    $add_icon = '<span class="i-left-bg dashicons dashicons-admin-appearance"></span>';
    if (strpos($value['name'], ' BG') === false) {
        $add_icon = '<span class="i-left-fg dashicons dashicons-admin-appearance"></span>';
    }
    if (!$val_only) { ?>
        <tr>
        <th scope="row"><?php weaverx_echo_name($value, $add_icon); ?>:&nbsp;</th>
        <td> <?php
    } else {
        echo '&nbsp;<small>' . $value['info'] . '</small>&nbsp;';
    } ?>
    <input class="<?php echo $pclass; ?>" name="<?php weaverx_sapi_main_name($value['id']); ?>"
           id="<?php echo $value['id']; ?>" type="text" style="width:90px"
           value="<?php if (weaverx_getopt($value['id']) != "") {
               weaverx_esc_textarea(weaverx_getopt($value['id']));
           } else {
               echo '';
           } ?>"/>
    <?php
    echo $img_css; ?>
    <a href="javascript:void(null);"
       onclick="weaverx_ToggleRowCSS(document.getElementById('<?php echo $css_id . '_js'; ?>'), this, '<?php echo $img_show; ?>', '<?php echo $img_hide; ?>')"><?php echo '<img src="' . esc_url($img_toggle) . '" alt="toggle css" />'; ?></a>
    <?php if (!$val_only) { ?>
    </td>
    <?php weaverx_form_info($value);
    ?>
    </tr>
<?php }
    $css_rows = weaverx_getopt('_css_rows');
    if ($css_rows < 1 || $css_rows > 25) {
        $css_rows = 1;
    }
    if ($css_id_text && !weaverx_getopt('_hide_auto_css_rules')) { ?>
        <tr id="<?php echo $css_id . '_js'; ?>">
            <th scope="row"><span
                        style="color:#22a;"><small><?php esc_html_e('Custom CSS styling:', 'weaver-xtreme' /*adm*/); ?></small></span>
            </th>
            <td><small>&nbsp;</small></td>
            <td>
                <small>
                    <?php echo wp_kses_post(__('You can enter CSS rules, enclosed in {}\'s, and separated by <strong>;</strong>. See ', 'weaver-xtreme' /*adm*/)); ?>
                    <a href="<?php echo $help_file; ?>"
                       target="_blank"><?php esc_html_e('CSS Help', 'weaver-xtreme' /*adm*/); ?></a> <?php _e('for more details.', 'weaver-xtreme' /*adm*/); ?>
                </small><br/>
                <?php weaverx_textarea($css_id_text, $css_id, $css_rows, '{ font-size:150%; font-weight:bold; } /* for example */'); ?>
            </td>
        </tr>
        <?php
    } else {
        ?>
        <tr id="<?php echo $css_id . '_js'; ?>" style="display:none;">
            <th scope="row"><span
                        style="color:green;"><small><?php esc_html_e('Custom CSS styling:', 'weaver-xtreme' /*adm*/); ?></small></span>
            </th>
            <td><small>&nbsp;</small></td>
            <td>
                <small>
                    <?php esc_html_e('You can enter CSS rules, enclosed in {}\'s, and separated by <strong>;</strong>. See', 'weaver-xtreme' /*adm*/); ?>
                    <a href="<?php echo $help_file; ?>"
                       target="_blank"><?php esc_html_e('CSS Help', 'weaver-xtreme' /*adm*/); ?></a> for more
                    details.</small><br/>
                <?php weaverx_textarea($css_id_text, $css_id, $css_rows, '{ font-size:150%; font-weight:bold; } /* for example */'); ?>
            </td>
        </tr>
        <?php
    }
}

function weaverx_textarea($text, $id, $rows = 0, $place = '', $style = 'width:85%;', $class = 'wvrx-edit', $filter = true): void
{
    $name = weaverx_sapi_main_name($id, false);
    /* if ($text) {
        $newrows = count((explode("\n",$text)))+1;
        if ($newrows > $rows)
            $rows = $newrows;
    } else { */
    if ($rows < 2) {
        $rows = 1;
    }
    if ($rows > 25) {
        $rows = 25;
    }
    if ($filter) {
        $text = weaverx_esc_textarea($text, false);
    }    // don't echo
    echo "<textarea class='$class' placeholder='$place' name='$name' rows='$rows' style='$style'>$text</textarea>\n";
}


function weaverx_form_color($value, $val_only = false): void
{

    $pclass = 'color {hash:true, adjust:false}';    // starting with V 1.3, allow text in color pickers
    if (!$val_only) {
        ?>
        <tr>
        <th scope="row"><?php weaverx_echo_name($value, '<span class="i-left-fg dashicons dashicons-admin-appearance"></span>'); ?>
            :&nbsp;
        </th>
        <td>
    <?php } else {
        echo '&nbsp;<small>' . $value['info'] . '</small>&nbsp;';
    } ?>
    <input class="<?php echo $pclass; ?>" name="<?php weaverx_sapi_main_name($value['id']); ?>"
           id="<?php echo $value['id']; ?>" type="text" style="width:90px"
           value="<?php if (weaverx_getopt($value['id']) != "") {
               weaverx_esc_textarea(weaverx_getopt($value['id']));
           } else {
               echo ' ';
           } ?>"/>
    <?php if (!$val_only) { ?>
    </td>
    <?php weaverx_form_info($value);
    ?>
    </tr>
    <?php
}
}

function weaverx_form_header($value, $narrow = false): void
{
    ?>
    <tr class="atw-row-header">
        <th scope="row" style="width:200px;"><?php /* NO SAPI SETTING */

            if (isset($value['id'])) {
                $icon = $value['id'];
            }
            if (!isset($icon) || !$icon) {
                $icon = ' ';
            }

            $dash = '';
            if ($icon[0] == '-') {                      // add a leading icon
                $dash = '<span style="padding: .1em .5em 0 .2em" class="dashicons dashicons-' . substr($icon, 1) . '"></span>';
            }
            echo weaverx_anchor($value['name']) . $dash . '<span style="font-weight:bold; font-size: larger;"><em>' . $value['name'] . '</em></span>';
            weaverx_form_help($value);
            ?>
        </th>
        <?php
        if ($narrow) {
            echo('<td  style="width:80px;">&nbsp;</td>' . "\n");
        } else {
            echo('<td style="width:170px;">&nbsp;</td>' . "\n");
        }

        if ($value['info'] != '') {
            echo('<td style="padding-left: 10px"><u><em><strong>');
            echo $value['info'];
            echo("</strong></em></u></td>\n");
        }
        ?>
    </tr>
    <?php
}

function weaverx_anchor($title): string
{
    if ($title) {
        return '<a class="anchorx" id="' . sanitize_title($title) . '"></a>';
    }

    return '';
}

function weaverx_form_help($value): void
{
    if (!empty($value['help'])) {
        weaverx_help_link($value['help'], 'Help for ' . $value['name']);
    }
}

function weaverx_form_subheader($value): void
{
    ?>
    <tr class="atw-row-subheader">
        <th scope="row" style="width:200px;line-height:2em;"><?php /* NO SAPI SETTING */

            if (isset($value['id'])) {
                $icon = $value['id'];
            }
            if (!isset($icon) || !$icon) {
                $icon = ' ';
            }

            $dash = '';
            if ($icon[0] == '-') {                      // add a leading icon
                $dash = '<span style="padding:.2em;" class="dashicons dashicons-' . substr($icon, 1) . '"></span>';
            }

            echo weaverx_anchor($value['name']) . $dash . '<span style="color:blue; font-weight:bold; "><em><u>' . $value['name'] . '</u></em></span>';
            weaverx_form_help($value);
            ?>
        </th>
        <td style="width:170px;">&nbsp;</td>
        <?php
        if ($value['info'] != '') {
            echo('<td style="padding-left: 10px"><u><em>');
            echo $value['info'];
            echo("</em></u></td>\n");
        }
        ?>
    </tr>
    <?php
}

function weaverx_form_subheader_alt($value): void
{
    ?>
    <tr>
        <td>&nbsp;</td>
    </tr>
    <tr class="atw-row-subheader-alt">
        <th scope="row" style="width:200px;line-height:2em;"><?php /* NO SAPI SETTING */

            if (isset($value['id'])) {
                $icon = $value['id'];
            }
            if (!isset($icon) || !$icon) {
                $icon = ' ';
            }

            $dash = '';
            if ($icon[0] == '-') {                      // add a leading icon
                $dash = '<span style="padding:.2em;" class="dashicons dashicons-' . substr($icon, 1) . '"></span>';
            }
            echo weaverx_anchor($value['name']) . $dash . '<span style="color:blue; font-weight:bold;padding-left:5px;"><em>' . $value['name'] . '</em></span>';
            weaverx_form_help($value);
            ?>
        </th>
        <td style="width:170px;">&nbsp;</td>
        <?php
        if (isset($value['info']) && $value['info'] != '') {
            echo('<td style="padding-left: 10px;color:blue;">');
            echo $value['info'];
            echo("</td>\n");
        }
        ?>
    </tr>
    <?php
}

function weaverx_form_header_area($value): void
{
    ?>
    <tr>
        <td>&nbsp;</td>
    </tr>
    <tr class="atw-row-subheader-area">
        <th scope="row" style="width:200px;line-height:2em;"><?php /* NO SAPI SETTING */

            if (isset($value['id'])) {
                $icon = $value['id'];
            }
            if (!isset($icon) || !$icon) {
                $icon = ' ';
            }

            $dash = '';
            if ($icon[0] == '-') {                      // add a leading icon
                $dash = '<span style="padding:.2em;" class="dashicons dashicons-' . substr($icon, 1) . '"></span>';
            }

            echo weaverx_anchor($value['name']) . $dash . '<span style="color:blue; font-weight:bold;padding-left:5px;font-size:small;"><em>' . $value['name'] . '</em></span>';
            weaverx_form_help($value);
            ?>
        </th>
        <td style="width:170px;">&nbsp;</td>
        <?php
        if ($value['info'] != '') {
            echo('<td style="padding-left: 10px;color:blue;">');
            echo $value['info'];
            echo("</td>\n");
        }
        ?>
    </tr>
    <?php
}

//-- load theme settings needed here

function weaverx_loadtheme(): void
{
    if (!(isset($_POST['uploadit']) && $_POST['uploadit'] == 'yes')) {
        return;
    }

    // upload theme from users computer
    // they've supplied and uploaded a file

    $ok = true;     // no errors so far

    $filename = $_FILES['uploaded']['name'] ?? "";

    $openname = $_FILES['uploaded']['tmp_name'] ?? "";

    //Check the file extension
    $check_file = strtolower($filename);
    $pat = '.';                // PHP version strict checking bug...
    $end = explode($pat, $check_file);
    $ext_check = end($end);

    $errors[] = '';
    if ($filename == "") {
        $errors[] = esc_html__('You didn\'t select a file to upload.', 'weaver-xtreme' /*adm*/) . "<br />";
        $ok = false;
    }

    if ($ok && $ext_check != 'wxt' && $ext_check != 'wxb') {
        $errors[] = wp_kses_post(__('Theme files must have <em>.wxt</em> or <em>.wxb</em> extension.', 'weaver-xtreme' /*adm*/)) . '<br />';
        $ok = false;
    }

    if ($ok) {
        if (!weaverx_f_exists($openname)) {
            $errors[] = '<strong><em style="color:red;">' .
                esc_html__('Sorry, there was a problem uploading your file.
You may need to check your folder permissions or other server settings.', 'weaver-xtreme' /*adm*/) .
                '</em></strong><br />(' . esc_html__('Trying to use file', 'weaver-xtreme' /*adm*/) . ' <em>' . $openname . '</em>)';
            $ok = false;
        }
    }
    if (!$ok) {
        echo '<div id="message" class="updated fade"><p><strong><em style="color:red;">' .
            esc_html__('ERROR', 'weaver-xtreme' /*adm*/) . '</em></strong></p><p>';
        foreach ($errors as $error) {
            echo $error . '<br />';
        }
        echo '</p></div>';
    } else {    // OK - read file and save to My Saved Theme
        // $handle has file handle to temp file.
        $contents = weaverx_f_get_contents($openname);

        if (!weaverx_ex_set_current_to_serialized_values($contents)) {
            echo '<div id="message" class="updated fade"><p><strong><em style="color:red;">' .
                esc_html__('Sorry, there was a problem uploading your file.
The file you picked was not a valid Weaver Xtreme theme file.', 'weaver-xtreme' /*adm*/) .
                '</em></strong></p></div>';
        } else {
            weaverx_save_msg(__('Weaver Xtreme theme options reset to uploaded theme.', 'weaver-xtreme' /*adm*/));
        }
    }
}

function weaverx_ex_set_current_to_serialized_values($contents): bool
{
    global $weaverx_opts_cache;    // need to mess with the cache

    if (substr($contents, 0, 10) == 'WXT-V01.00' || substr($contents, 0, 10) != 'WVA-V01.00') {
        $type = 'theme';
    } elseif (substr($contents, 0, 10) == 'WXB-V01.00' || substr($contents, 0, 10) != 'WVB-V01.00') {
        $type = 'backup';
    } else {
        $val = substr($contents, 0, 10);

        return weaverx_f_fail(__("Wrong theme file format version", 'weaver-xtreme' /*adm*/) . ':' . $val);    /* simple check for one of ours */
    }
    $restore = array();
    $restore = unserialize(substr($contents, 10));

    if (!$restore) {
        return weaverx_f_fail(__("Unserialize failed", 'weaver-xtreme' /*adm*/));
    }

    $version = weaverx_getopt('weaverx_version_id');    // get something to force load

    if ($type == 'theme') {
        // need to clear some settings
        // first, pickup the per-site settings that aren't theme related...
        $new_cache = array();
        foreach ($weaverx_opts_cache as $key => $val) {
            if (isset($key[0]) && $key[0] == '_')    // these are non-theme specific settings
            {
                $new_cache[$key] = $val;
            }    // keep
        }

        $opts = weaverx_ts_convert4_to_5($restore['weaverx_base']);    // base opts

        weaverx_delete_all_options();

        foreach ($opts as $key => $val) {
            if (isset($key[0]) && $key[0] != '_') {
                weaverx_setopt($key, $val, false);
            }    // overwrite with saved theme values
        }

        foreach ($new_cache as $key => $val) {    // set the values we need to keep
            weaverx_setopt($key, $val, false);
        }

        if (weaverx_getopt('lazyh')) {
            weaverx_alert_debug('lazy h true, header_align=' . weaverx_getopt('header_align'));
            weaverx_setopt('UPDATEUPDATEUPDATE', 'test');
        }

    } elseif ($type == 'backup') {
        weaverx_delete_all_options();

        $opts = weaverx_ts_convert4_to_5($restore['weaverx_base']);   // fetch base opts

        foreach ($opts as $key => $val) {
            weaverx_setopt($key, $val, false);    // overwrite with saved values
        }
    }

    weaverx_setopt('weaverx_version_id', $version, false); // keep version, force save of db
    weaverx_setopt('wvrx_css_saved', '', false);


    weaverx_setopt('last_option', 'Weaver Xtreme');
    weaverx_save_opts('loading theme');    // OK, now we've saved the options, update them in the DB

    return true;
}

function weaverx_ts_convert4_to_5($options)
{
    if (function_exists('weaverx_convert4_to_5')) {
        return weaverx_convert4_to_5($options);
    } else {
        return $options;        // running V4
    }
}

function weaverx_ts_allow_file_read(): bool
{
    // Check for Reading User defined file name - not allowed by default for Multi-Site regular Admin
    // doesn't allow WVRX_MULTISITE_RESTRICT_OPTIONS test
    // Plugin specific version for backward compatibility with older versions of theme

    return ((!is_multisite() && current_user_can('install_plugins'))
        || (is_multisite() && current_user_can('manage_network_themes')));
}

// Weaver Xtreme 5 compatibility functions
if (version_compare(WEAVERX_VERSION, '4.9.0', '>=')) {
    if (!function_exists('weaverx_esc_textarea')) {
        function weaverx_esc_textarea($text, $echo = true): string
        {
            if (current_user_can('unfiltered_html')) {
                $out = esc_textarea($text);
            } else {
                $out = esc_textarea($text);
            }
            if ($echo) {
                echo $out;

                return '';
            } else {
                return $out;
            }
        }
    }

    if (!function_exists('weaverx_media_lib_button')) {
        function weaverx_media_lib_button($fillin = ''): void
        {
            ?>
            &nbsp;&larr; &nbsp;
            <a style='text-decoration:none;'
               title="<?php echo esc_html__('Select image from Media Library. Click \'Insert into Post\' to paste url here.', 'weaver-xtreme'); ?>"
               href="javascript:weaverx_media_lib( '<?php echo $fillin; ?>' );"><span
                        style="font-size:16px;margin-top:2px;" class="dashicons dashicons-format-image"></span></a>
            <?php
        }
    }
}