<?php
if (!defined('ABSPATH')) {
    exit;
}

class AF_Translate_Core
{

    /**
     * Hook up the administration workspace channels.
     */
    public function __construct()
    {
        add_action('admin_menu', array($this, 'register_admin_workspace'));
        add_action('admin_enqueue_scripts', array($this, 'bind_workspace_assets'));
        add_action('admin_enqueue_scripts', array($this, 'af_translate_admin_dashboard_scripts'));
        add_action('admin_enqueue_scripts', array($this, 'af_translate_new_language_scripts'));

        // Core background AJAX hooks mapping configurations        
        add_action('wp_ajax_af_translate_delete_locale', array('AF_Translate_Ajax', 'ajax_delete_locale'));
    }

    /**
     * Registers the structural parent space alongside explicit submenus.
     */
    public function register_admin_workspace()
    {
        $capability = 'manage_options'; // Strict security access constraint requirement

        // 1. Primary Parent Hub Node
        add_menu_page(
            esc_html__('AF Translate Dashboard', 'af-translate'),
            esc_html__('AF Translate', 'af-translate'),
            $capability,
            'af-translate',
            array($this, 'render_workspace_router'),
            'dashicons-translation',
            65
        );

        // 2. Explicit Submenu Node: Overview Matrix
        add_submenu_page(
            'af-translate',
            esc_html__('Home Dashboard', 'af-translate'),
            esc_html__('Home', 'af-translate'),
            $capability,
            'af-translate',
            array($this, 'render_workspace_router')
        );

        // 3. Explicit Submenu Node: Plugins Workspace
        add_submenu_page(
            'af-translate',
            esc_html__('Plugins Localization Registry', 'af-translate'),
            esc_html__('Plugins', 'af-translate'),
            $capability,
            'af-translate-plugins',
            array($this, 'render_workspace_router')
        );

        // 4. Explicit Submenu Node: Themes Workspace
        add_submenu_page(
            'af-translate',
            esc_html__('Themes Localization Registry', 'af-translate'),
            esc_html__('Themes', 'af-translate'),
            $capability,
            'af-translate-themes',
            array($this, 'render_workspace_router')
        );
    }

    /**
     * Enqueues localized asset bundles securely.
     */
    public function bind_workspace_assets($hook)
    {
        $allowed_hooks = array(
            'toplevel_page_af-translate',
            'af-translate_page_af-translate-plugins',
            'af-translate_page_af-translate-themes'
        );

        if (!in_array($hook, $allowed_hooks, true)) {
            return;
        }

        // Security check block to ensure lower roles cannot force layout script loads
        if (!current_user_can('manage_options')) {
            return;
        }

        wp_enqueue_style('af-translate-admin-css', AF_TRANSLATE_URL . 'assets/css/admin.css', array(), '2.0.2');
        wp_enqueue_script('af-translate-workspace-js', AF_TRANSLATE_URL . 'assets/js/workspace.js', array('jquery'), '2.0.2', true);

        wp_localize_script('af-translate-workspace-js', 'afTranslateWorkspace', array(
            'ajaxurl' => admin_url('admin-ajax.php'),
            'nonce'   => wp_create_nonce('af_translate_secure_stream')
        ));
    }

    public
    /**
     * Register and securely enqueue admin-side workspace automation mechanisms
     *
     * @param string $hook The structural current admin page identifier slug.
     */
    function af_translate_admin_dashboard_scripts($hook)
    {
        // Hard restriction: Only inject assets on the exact plugin administration screen hooks
        if (strpos($hook, 'af-translate') === false) {
            return;
        }

        // Safely register and queue the independent JavaScript controller asset file
        wp_enqueue_script(
            'af-translate-dashboard-script',
            AF_TRANSLATE_URL .'assets/js/project-dashboard.js', // Make sure path maps relative to your file location
            array('jquery'),
            '1.0.0',
            true // Forces execution array down into bottom page footer layout tree
        );

        // Create the parameter data object payload and append translatable interface alerts
        wp_localize_script('af-translate-dashboard-script', 'afTranslateDashboard', array(
            'ajaxurl' => admin_url('admin-ajax.php'),
            'nonce'   => wp_create_nonce('af_translate_secure_action'), // Ensure this matches your Ajax token checks
            'strings' => array(
                'confirmSync'   => esc_html__('Sync this language file with the master template? This updates new customization strings without destroying existing translations.', 'af-translate'),
                'confirmDelete' => esc_html__('Are you sure you want to permanently delete this translation file and its compiled machine code?', 'af-translate'),
                'errorDelete'   => esc_html__('Failed to delete the selected file.', 'af-translate'),
            )
        ));
    }

    /**
     * Enqueue control mechanisms for the language initialization view layout wizard
     *
     * @param string $hook The administrative window path signature string.
     */
    public function af_translate_new_language_scripts($hook)
    {
        // Only target screens tied to our localization engine workspace configuration
        if (strpos($hook, 'af-translate') === false) {
            return;
        }

        // Register script asset file independently
        wp_enqueue_script(
            'af-translate-new-lang-script',
            AF_TRANSLATE_URL .'assets/js/new-language.js', // Map relative path context variables accurately
            array('jquery'),
            '1.0.0',
            true
        );

        // Bind nonces and multi-lingual string matrices cleanly to the script execution hook
        wp_localize_script('af-translate-new-lang-script', 'afTranslateNewLang', array(
            'ajaxurl' => admin_url('admin-ajax.php'),
            'nonce'   => wp_create_nonce('af_translate_secure_action'), // Keep consistent with back-end ajax checks
            'strings' => array(
                'loadingText'   => esc_html__('Analyzing bundle infrastructure...', 'af-translate'),
                'buttonDefault' => esc_html__('Start translating', 'af-translate'),
                'errorPrefix'   => esc_html__('Error: ', 'af-translate'),
                'errorDefault'  => esc_html__('Failed to initialize localized dataset parameters.', 'af-translate'),
            )
        ));
    }


    /**
     * Directs administrative action requests and checks system capabilities.
     */
    public function render_workspace_router()
    {
        // Defensive Capability Guard: Immediately stop processing if user lacks permissions
        if (!current_user_can('manage_options')) {
            wp_die(esc_html__('Security Exception: You do not have sufficient permissions to access this page.', 'af-translate'));
        }

        // Determine current tab view context based on submenu page slugs natively
        // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only page routing navigation parameter.
        $current_page = isset($_GET['page']) ? sanitize_text_field(wp_unslash($_GET['page'])) : 'af-translate';
        $tab = 'overview';
        if ('af-translate-plugins' === $current_page) {
            $tab = 'plugins';
        } elseif ('af-translate-themes' === $current_page) {
            $tab = 'themes';
        } else {
            // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only page layout routing tab state parameter.
            $tab = isset($_GET['tab']) ? sanitize_key(wp_unslash($_GET['tab'])) : 'overview';
        }

        // Sanitize slug inputs cleanly using sanitize_key to completely avoid directory traversal attacks
        // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only component slug identifier mapping parameter.
        $view = isset($_GET['view']) ? sanitize_key(wp_unslash($_GET['view'])) : '';
        // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only component classification routing parameter.
        $type = isset($_GET['type']) ? sanitize_key(wp_unslash($_GET['type'])) : 'theme';

        echo '<div class="wrap af-translate-wrapper">';

        if (!empty($view)) {
            // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only secondary panel layout navigation handler parameter.
            $action = isset($_GET['action']) ? sanitize_key(wp_unslash($_GET['action'])) : 'dashboard';
            switch ($action) {
                case 'edit':
                    // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only localization target tracking parameter.
                    $lang_target = isset($_GET['lang']) ? sanitize_key(wp_unslash($_GET['lang'])) : '';
                    AF_Translate_Editor_View::render($view, $type, $lang_target);
                    break;
                case 'setup':
                    AF_Translate_Project_Config::render_setup_panel($view, $type);
                    break;
                case 'new-lang':
                    AF_Translate_Project_Config::render_new_language_screen($view, $type);
                    break;
                case 'dashboard':
                default:
                    AF_Translate_Project_Config::render_project_dashboard($view, $type);
                    break;
            }
        } else {
            $this->render_global_header();
            $this->render_nav_tabs($tab);

            if ('overview' === $tab) {
                $this->render_overview_matrix();
            } elseif ('plugins' === $tab) {
                $this->render_all_extensions_matrix('plugin');
            } else {
                $this->render_all_extensions_matrix('theme');
            }
        }

        echo '</div>';
    }

    /**
     * Renders workspace branding interface.
     */
    private function render_global_header()
    {
?>
        <div class="af-translate-header">
            <h1><span class="dashicons dashicons-translation"></span> <?php esc_html_e('AF Translate Dashboard', 'af-translate'); ?></h1>
            <p class="description"><?php esc_html_e('Enterprise Direct In-Dashboard Localization and Translation Suite for Themes and Plugins.', 'af-translate'); ?></p>
        </div>
    <?php
    }

    /**
     * Renders standard top-level dashboard tab bars matching submenu contexts.
     */
    private function render_nav_tabs($current_tab)
    {
    ?>
        <nav class="nav-tab-wrapper" style="margin-bottom:20px;">
            <a href="?page=af-translate&tab=overview" class="nav-tab <?php echo 'overview' === $current_tab ? 'nav-tab-active' : ''; ?>"><?php esc_html_e('Overview Matrix', 'af-translate'); ?></a>
            <a href="?page=af-translate-plugins" class="nav-tab <?php echo 'plugins' === $current_tab ? 'nav-tab-active' : ''; ?>"><?php esc_html_e('All Plugins', 'af-translate'); ?></a>
            <a href="?page=af-translate-themes" class="nav-tab <?php echo 'themes' === $current_tab ? 'nav-tab-active' : ''; ?>"><?php esc_html_e('All Themes', 'af-translate'); ?></a>
        </nav>
    <?php
    }

    /**
     * Compiles system diagnostic data grids.
     */
    private function render_overview_matrix()
    {
        $active_theme  = wp_get_theme();
        $theme_slug    = $active_theme->get_stylesheet();
        $theme_summary = AF_Translate_Analyzer::get_component_summary($theme_slug, 'theme');

        $active_plugins = get_option('active_plugins');
    ?>
        <div class="af-card-grid" style="margin-bottom:24px;">
            <div class="af-sys-card">
                <h3 style="margin-top:0;"><?php esc_html_e('System Configuration', 'af-translate'); ?></h3>
                <ul style="margin:0; padding-left:20px; line-height:1.8;">
                    <li><strong><?php esc_html_e('Primary Locale:', 'af-translate'); ?></strong> <code><?php echo esc_html(get_locale()); ?></code></li>
                    <li><strong><?php esc_html_e('Active Theme:', 'af-translate'); ?></strong> <?php echo esc_html($active_theme->get('Name')); ?></li>
                    <li><strong><?php esc_html_e('Extensions Loaded:', 'af-translate'); ?></strong> <?php // translators: %s: The nuber of active plugins.
                                                                                                        printf(esc_html__('%d Active Plugins', 'af-translate'), count($active_plugins)); ?></li>
                </ul>
            </div>
        </div>

        <h3 class="section-title"><?php esc_html_e('Active Production Theme Architecture', 'af-translate'); ?></h3>
        <table class="wp-list-table widefat fixed striped af-data-table" style="margin-bottom:30px;">
            <thead>
                <tr>
                    <th><?php esc_html_e('Name', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Text Domain', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Template State', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Localization Sets', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Execution', 'af-translate'); ?></th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td><strong><?php echo esc_html($active_theme->get('Name')); ?></strong></td>
                    <td><code><?php echo esc_html($theme_summary['text_domain']); ?></code></td>
                    <td>
                        <?php
                        echo $theme_summary['pot_exists']
                            ? '<span class="status-ok">' . esc_html__('POT Discovered', 'af-translate') . '</span>'
                            : '<span class="status-warn">' . esc_html__('Missing Template', 'af-translate') . '</span>';
                        ?>
                    </td>
                    <td><span class="af-badge"><?php // translators: %s: The nubmer of po files of the target translation file.
                                                printf(esc_html__('%s PO Files Found', 'af-translate'), esc_html($theme_summary['po_count'])); ?></span></td>
                    <td><a href="?page=af-translate&view=<?php echo urlencode($theme_slug); ?>&type=theme" class="button button-primary"><?php esc_html_e('Manage Bundle', 'af-translate'); ?></a></td>
                </tr>
            </tbody>
        </table>

        <h3 class="section-title"><?php esc_html_e('Active Plugins Localization Context', 'af-translate'); ?></h3>
        <table class="wp-list-table widefat fixed striped af-data-table">
            <thead>
                <tr>
                    <th><?php esc_html_e('Name', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Text Domain', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Template State', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Localization Sets', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Execution', 'af-translate'); ?></th>
                </tr>
            </thead>
            <tbody>
                <?php
                if (!empty($active_plugins)) {
                    if (!function_exists('get_plugins')) {
                        require_once ABSPATH . 'wp-admin/includes/plugin.php';
                    }
                    $all_plugins = get_plugins();

                    foreach ($active_plugins as $plugin_path) {
                        if (!isset($all_plugins[$plugin_path])) {
                            continue;
                        }

                        $plugin_data = $all_plugins[$plugin_path];
                        $plugin_slug = dirname($plugin_path);
                        if ('.' === $plugin_slug) {
                            $plugin_slug = basename($plugin_path, '.php');
                        }

                        $plugin_summary = AF_Translate_Analyzer::get_component_summary($plugin_slug, 'plugin');
                ?>
                        <tr>
                            <td><strong><?php echo esc_html($plugin_data['Name']); ?></strong></td>
                            <td><code><?php echo esc_html(!empty($plugin_data['TextDomain']) ? $plugin_data['TextDomain'] : $plugin_slug); ?></code></td>
                            <td>
                                <?php
                                echo $plugin_summary['pot_exists']
                                    ? '<span class="status-ok">' . esc_html__('POT Discovered', 'af-translate') . '</span>'
                                    : '<span class="status-neutral">' . esc_html__('No POT Found', 'af-translate') . '</span>';
                                ?>
                            </td>
                            <td><span class="af-badge"><?php // translators: %s: The number of po files of the target translation file.
                                                        printf(esc_html__('%s PO Files', 'af-translate'), esc_html($plugin_summary['po_count'])); ?></span></td>
                            <td><a href="?page=af-translate&view=<?php echo urlencode($plugin_slug); ?>&type=plugin" class="button button-secondary"><?php esc_html_e('Manage Bundle', 'af-translate'); ?></a></td>
                        </tr>
                <?php
                    }
                } else {
                    echo '<tr><td colspan="5">' . esc_html__('No active plugins discovered.', 'af-translate') . '</td></tr>';
                }
                ?>
            </tbody>
        </table>
    <?php
    }

    /**
     * Scans and renders standard full matrix indexes across storage arrays.
     */
    private function render_all_extensions_matrix($type)
    {
        if ('plugin' === $type) {
            if (!function_exists('get_plugins')) {
                require_once ABSPATH . 'wp-admin/includes/plugin.php';
            }
            $items = get_plugins();
        } else {
            $items = wp_get_themes();
        }

    ?>
        <h3 class="section-title">
            <?php
            if ('plugin' === $type) {
                esc_html_e('All Installed Plugin Bundles', 'af-translate');
            } else {
                esc_html_e('All Installed Theme Bundles', 'af-translate');
            }
            ?>
        </h3>
        <table class="wp-list-table widefat fixed striped af-data-table">
            <thead>
                <tr>
                    <th><?php esc_html_e('Bundle Target', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Namespace Domain', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Status', 'af-translate'); ?></th>
                    <th><?php esc_html_e('Actions', 'af-translate'); ?></th>
                </tr>
            </thead>
            <tbody>
                <?php
                foreach ($items as $key => $data) {
                    $slug = ('plugin' === $type) ? dirname($key) : $key;
                    if ('.' === $slug) {
                        $slug = basename($key, '.php');
                    }

                    $name = ('plugin' === $type) ? $data['Name'] : $data->get('Name');
                    $is_active = ('plugin' === $type) ? is_plugin_active($key) : ($key === wp_get_theme()->get_stylesheet());
                    $domain = ('plugin' === $type) ? (!empty($data['TextDomain']) ? $data['TextDomain'] : $slug) : ($data->get('TextDomain') ? $data->get('TextDomain') : $slug);

                    $target_menu_page = ('plugin' === $type) ? 'af-translate-plugins' : 'af-translate-themes';
                ?>
                    <tr>
                        <td><strong><?php echo esc_html($name); ?></strong></td>
                        <td><code><?php echo esc_html($domain); ?></code></td>
                        <td>
                            <?php
                            echo $is_active
                                ? '<span class="status-ok">' . esc_html__('Active', 'af-translate') . '</span>'
                                : '<span class="status-neutral">' . esc_html__('Inactive', 'af-translate') . '</span>';
                            ?>
                        </td>
                        <td>
                            <a href="?page=<?php echo esc_attr($target_menu_page); ?>&view=<?php echo urlencode($slug); ?>&type=<?php echo esc_attr($type); ?>" class="button button-secondary">
                                <?php esc_html_e('Open Dashboard', 'af-translate'); ?>
                            </a>
                        </td>
                    </tr>
                <?php
                }
                ?>
            </tbody>
        </table>
<?php
    }
}