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<?php

class Theme_Installer_Skin extends WP_Upgrader_Skin
{
    public $api;
    public $type;
    public $url;
    public $overwrite;
    private $is_downgrading = false;
    public function __construct($args = array())
    {
        $defaults = array('type' => 'web', 'url' => '', 'theme' => '', 'nonce' => '', 'title' => '', 'overwrite' => '');
        $args = wp_parse_args($args, $defaults);
        $this->type = $args['type'];
        $this->url = $args['url'];
        $this->api = isset($args['api']) ? $args['api'] : array();
        $this->overwrite = $args['overwrite'];
        parent::__construct($args);
    }
    public function before()
    {
        if (!empty($this->api)) {
            $this->upgrader->strings['process_success'] = sprintf($this->upgrader->strings['process_success_specific'], $this->api->name, $this->api->version);
        }
    }
    public function hide_process_failed($wp_error)
    {
        if ('upload' === $this->type && '' === $this->overwrite && $wp_error->get_error_code() === 'folder_exists') {
            return true;
        }
        return false;
    }
    public function after()
    {
        if ($this->do_overwrite()) {
            return;
        }
        if (empty($this->upgrader->result['destination_name'])) {
            return;
        }
        $theme_info = $this->upgrader->theme_info();
        if (empty($theme_info)) {
            return;
        }
        $name = $theme_info->display('Name');
        $stylesheet = $this->upgrader->result['destination_name'];
        $template = $theme_info->get_template();
        $activate_link = add_query_arg(array('action' => 'activate', 'template' => urlencode($template), 'stylesheet' => urlencode($stylesheet)), admin_url('themes.php'));
        $activate_link = wp_nonce_url($activate_link, 'switch-theme_' . $stylesheet);
        $install_actions = array();
        if (current_user_can('edit_theme_options') && current_user_can('customize')) {
            $customize_url = add_query_arg(array('theme' => urlencode($stylesheet), 'return' => urlencode(admin_url('web' === $this->type ? 'theme-install.php' : 'themes.php'))), admin_url('customize.php'));
            $install_actions['preview'] = sprintf('<a href="%s" class="hide-if-no-customize load-customize">' . '<span aria-hidden="true">%s</span><span class="screen-reader-text">%s</span></a>', esc_url($customize_url), __('Live Preview'), sprintf(__('Live Preview &#8220;%s&#8221;'), $name));
        }
        $install_actions['activate'] = sprintf('<a href="%s" class="activatelink">' . '<span aria-hidden="true">%s</span><span class="screen-reader-text">%s</span></a>', esc_url($activate_link), __('Activate'), sprintf(_x('Activate &#8220;%s&#8221;', 'theme'), $name));
        if (is_network_admin() && current_user_can('manage_network_themes')) {
            $install_actions['network_enable'] = sprintf('<a href="%s" target="_parent">%s</a>', esc_url(wp_nonce_url('themes.php?action=enable&amp;theme=' . urlencode($stylesheet), 'enable-theme_' . $stylesheet)), __('Network Enable'));
        }
        if ('web' === $this->type) {
            $install_actions['themes_page'] = sprintf('<a href="%s" target="_parent">%s</a>', self_admin_url('theme-install.php'), __('Go to Theme Installer'));
        } elseif (current_user_can('switch_themes') || current_user_can('edit_theme_options')) {
            $install_actions['themes_page'] = sprintf('<a href="%s" target="_parent">%s</a>', self_admin_url('themes.php'), __('Go to Themes page'));
        }
        if (!$this->result || is_wp_error($this->result) || is_network_admin() || !current_user_can('switch_themes')) {
            unset($install_actions['activate'], $install_actions['preview']);
        } elseif (get_option('template') === $stylesheet) {
            unset($install_actions['activate']);
        }
        $install_actions = apply_filters('install_theme_complete_actions', $install_actions, $this->api, $stylesheet, $theme_info);
        if (!empty($install_actions)) {
            $this->feedback(implode(' | ', (array) $install_actions));
        }
    }
    private function do_overwrite()
    {
        if ('upload' !== $this->type || !is_wp_error($this->result) || 'folder_exists' !== $this->result->get_error_code()) {
            return false;
        }
        $folder = $this->result->get_error_data('folder_exists');
        $folder = rtrim($folder, '/');
        $current_theme_data = false;
        $all_themes = wp_get_themes(array('errors' => null));
        foreach ($all_themes as $theme) {
            $stylesheet_dir = wp_normalize_path($theme->get_stylesheet_directory());
            if (rtrim($stylesheet_dir, '/') !== $folder) {
                continue;
            }
            $current_theme_data = $theme;
        }
        $new_theme_data = $this->upgrader->new_theme_data;
        if (!$current_theme_data || !$new_theme_data) {
            return false;
        }
        echo '<h2 class="update-from-upload-heading">' . esc_html(__('This theme is already installed.')) . '</h2>';
        if (is_wp_error($current_theme_data->errors())) {
            $this->feedback('current_theme_has_errors', $current_theme_data->errors()->get_error_message());
        }
        $this->is_downgrading = version_compare($current_theme_data['Version'], $new_theme_data['Version'], '>');
        $is_invalid_parent = false;
        if (!empty($new_theme_data['Template'])) {
            $is_invalid_parent = !in_array($new_theme_data['Template'], array_keys($all_themes), true);
        }
        $rows = array('Name' => __('Theme name'), 'Version' => __('Version'), 'Author' => __('Author'), 'RequiresWP' => __('Required WordPress version'), 'RequiresPHP' => __('Required PHP version'), 'Template' => __('Parent theme'));
        $table = '<table class="update-from-upload-comparison"><tbody>';
        $table .= '<tr><th></th><th>' . esc_html(__('Current')) . '</th><th>' . esc_html(__('Uploaded')) . '</th></tr>';
        $is_same_theme = true;
        foreach ($rows as $field => $label) {
            $old_value = $current_theme_data->display($field, false);
            $old_value = $old_value ? (string) $old_value : '-';
            $new_value = !empty($new_theme_data[$field]) ? (string) $new_theme_data[$field] : '-';
            if ($old_value === $new_value && '-' === $new_value && 'Template' === $field) {
                continue;
            }
            $is_same_theme = $is_same_theme && $old_value === $new_value;
            $diff_field = 'Version' !== $field && $new_value !== $old_value;
            $diff_version = 'Version' === $field && $this->is_downgrading;
            $invalid_parent = false;
            if ('Template' === $field && $is_invalid_parent) {
                $invalid_parent = true;
                $new_value .= ' ' . __('(not found)');
            }
            $table .= '<tr><td class="name-label">' . $label . '</td><td>' . wp_strip_all_tags($old_value) . '</td>';
            $table .= $diff_field || $diff_version || $invalid_parent ? '<td class="warning">' : '<td>';
            $table .= wp_strip_all_tags($new_value) . '</td></tr>';
        }
        $table .= '</tbody></table>';
        echo apply_filters('install_theme_overwrite_comparison', $table, $current_theme_data, $new_theme_data);
        $install_actions = array();
        $can_update = true;
        $blocked_message = '<p>' . esc_html(__('The theme cannot be updated due to the following:')) . '</p>';
        $blocked_message .= '<ul class="ul-disc">';
        $requires_php = isset($new_theme_data['RequiresPHP']) ? $new_theme_data['RequiresPHP'] : null;
        $requires_wp = isset($new_theme_data['RequiresWP']) ? $new_theme_data['RequiresWP'] : null;
        if (!is_php_version_compatible($requires_php)) {
            $error = sprintf(__('The PHP version on your server is %1$s, however the uploaded theme requires %2$s.'), phpversion(), $requires_php);
            $blocked_message .= '<li>' . esc_html($error) . '</li>';
            $can_update = false;
        }
        if (!is_wp_version_compatible($requires_wp)) {
            $error = sprintf(__('Your WordPress version is %1$s, however the uploaded theme requires %2$s.'), get_bloginfo('version'), $requires_wp);
            $blocked_message .= '<li>' . esc_html($error) . '</li>';
            $can_update = false;
        }
        $blocked_message .= '</ul>';
        if ($can_update) {
            if ($this->is_downgrading) {
                $warning = sprintf(__('You are uploading an older version of a current theme. You can continue to install the older version, but be sure to <a href="%s">back up your database and files</a> first.'), __('https://wordpress.org/support/article/wordpress-backups/'));
            } else {
                $warning = sprintf(__('You are updating a theme. Be sure to <a href="%s">back up your database and files</a> first.'), __('https://wordpress.org/support/article/wordpress-backups/'));
            }
            echo '<p class="update-from-upload-notice">' . $warning . '</p>';
            $overwrite = $this->is_downgrading ? 'downgrade-theme' : 'update-theme';
            $install_actions['overwrite_theme'] = sprintf('<a class="button button-primary update-from-upload-overwrite" href="%s" target="_parent">%s</a>', wp_nonce_url(add_query_arg('overwrite', $overwrite, $this->url), 'theme-upload'), __('Replace current with uploaded'));
        } else {
            echo $blocked_message;
        }
        $cancel_url = add_query_arg('action', 'upload-theme-cancel-overwrite', $this->url);
        $install_actions['themes_page'] = sprintf('<a class="button" href="%s" target="_parent">%s</a>', wp_nonce_url($cancel_url, 'theme-upload-cancel-overwrite'), __('Cancel and go back'));
        $install_actions = apply_filters('install_theme_overwrite_actions', $install_actions, $this->api, $new_theme_data);
        if (!empty($install_actions)) {
            printf('<p class="update-from-upload-expired hidden">%s</p>', __('The uploaded file has expired. Please go back and upload it again.'));
            echo '<p class="update-from-upload-actions">' . implode(' ', (array) $install_actions) . '</p>';
        }
        return true;
    }
}