<?php

if (!defined('ABSPATH')) {
    exit;
}

class AIEO_IAPI_Admin {

    const MENU_SLUG     = 'aieo-iapi';
    const NONCE_ACTION  = 'aieo_iapi_save';
    const FORM_ACTION   = 'aieo_iapi_save_settings';
    const CAPABILITY    = 'manage_options';

    
    private static $instance = null;

    public static function instance() {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    private function __construct() {
        add_action('admin_menu',                          array($this, 'register_menu'), 25);
        add_action('admin_post_' . self::FORM_ACTION,     array($this, 'handle_save'));
    }

    public function register_menu() {
        
        
        
        
        
        
        $hook = add_submenu_page(
            '',
            __('Interactivity (IAPI)', 'ai-eshop-optimizer'),
            __('Interactivity (IAPI)', 'ai-eshop-optimizer'), 
            self::CAPABILITY,
            self::MENU_SLUG,
            array($this, 'render_page')
        );
        if ($hook) {
            add_action('load-' . $hook, static function () {
                $GLOBALS['title'] = __('Interactivity (IAPI)', 'ai-eshop-optimizer');
            });
        }
    }

    
    private function modules() {
        return array(
            'pricing' => array(
                'label' => __('Pricing batch (REST)', 'ai-eshop-optimizer'),
                'desc'  => __('Batch effective-price lookup via /aieo/v1/pricing/batch. Read-only; safe to leave on.', 'ai-eshop-optimizer'),
            ),
            'wishlist' => array(
                'label' => __('Wishlist heart', 'ai-eshop-optimizer'),
                'desc'  => __('Heart toggle, optimistic paint with rollback, cookie sync, multi-heart sync, "See your favourites" label.', 'ai-eshop-optimizer'),
            ),
            'waitlist' => array(
                'label' => __('Waitlist', 'ai-eshop-optimizer'),
                'desc'  => __('"Notify me when back in stock" form: email validation, loading overlay, WC variation integration.', 'ai-eshop-optimizer'),
            ),
            'complementary' => array(
                'label' => __('Complementary products', 'ai-eshop-optimizer'),
                'desc'  => __('Multi-checkbox batch add-to-cart. Routes fragments through the IAPI cart store.', 'ai-eshop-optimizer'),
            ),
            'reco' => array(
                'label' => __('Recommendations (events only)', 'ai-eshop-optimizer'),
                'desc'  => __('No standalone shim — emits aieo:reco:rendered after each section mounts. Per-card UI lives in the wishlist/swatches modules.', 'ai-eshop-optimizer'),
            ),
            'ratings' => array(
                'label' => __('Star ratings', 'ai-eshop-optimizer'),
                'desc'  => __('5-star product rating widget with per-product aggregate. Optimistic paint + rollback, batch REST hydration on archives, anonymous-cookie scoping.', 'ai-eshop-optimizer'),
            ),
            'swatches' => array(
                'label' => __('Swatches', 'ai-eshop-optimizer'),
                'desc'  => __('Single-select hydration only. Multi-select / quick-view modal / cart-sync markers NOT IMPLEMENTED — see ROADMAP.md, Phase C-θ.', 'ai-eshop-optimizer'),
            ),
            'sticky_atc' => array(
                'label' => __('Sticky add-to-cart', 'ai-eshop-optimizer'),
                'desc'  => __('IO-based visibility + cart-store add. Multi-select sticky / persistent sticky / smart auto-pick NOT IMPLEMENTED — Phase C-ι.', 'ai-eshop-optimizer'),
            ),
            'side_cart' => array(
                'label' => __('Side cart', 'ai-eshop-optimizer'),
                'desc'  => __('The whole drawer: the cart, the recommendation rails, recently viewed, favourites, quick view with variation dropdowns, the free-gift pickers and the product form\'s AJAX add. The default on block themes.', 'ai-eshop-optimizer'),
            ),
        );
    }

    private function module_statuses() {
        if (method_exists('AIEO_DMM', 'get_iapi_module_statuses')) {
            return AIEO_DMM::get_iapi_module_statuses();
        }
        return array();
    }

    public function render_page() {
        if (!current_user_can(self::CAPABILITY)) {
            wp_die(esc_html__('You do not have permission to access this page.', 'ai-eshop-optimizer'));
        }
        
        if (class_exists('AIEO_Chrome') && AIEO_Chrome::on() && method_exists('\Rooster\Admin\Board', 'page')) {
            \Rooster\Admin\Board::page(array($this, 'render_body'));
            return;
        }
        $this->render_body();
    }

    
    public function render_body() {
        $master_on = (bool) get_option('rooster_iapi_enabled', get_option('roosterx_iapi_enabled', false));
        $modules   = $this->modules();
        $statuses  = $this->module_statuses();
        $saved     = isset($_GET['aieo_iapi_saved']) && $_GET['aieo_iapi_saved'] === '1';
        $tones     = array('production' => 'success', 'scaffold' => 'warning');

        echo '<div class="wrap aieo-admin">';
        $head = class_exists('AIEO_Chrome') ? AIEO_Chrome::page_head(self::MENU_SLUG, __('Interactivity (IAPI)', 'ai-eshop-optimizer'), 'zap', self::MENU_SLUG) : '';
        echo '' !== $head ? $head : '<h1>' . esc_html__('Interactivity (IAPI)', 'ai-eshop-optimizer') . '</h1><hr class="wp-header-end">'; 
        if ($saved) {
            echo \Rooster\Admin\Ui::notice(esc_html__('IAPI settings saved.', 'ai-eshop-optimizer'), 'success', array('dismissible' => true)); 
        }
        $board = class_exists('\Rooster\Admin\Board') && \Rooster\Admin\Board::start(self::MENU_SLUG);

        
        
        
        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor'      => 'iapi-master',
            'icon'        => 'zap',
            'title'       => rtrim(__('Master switch (foundation):', 'ai-eshop-optimizer'), ': '),
            'description' => __('Loads the IAPI bootstrap (stores, REST endpoint, public CustomEvents) regardless of per-module flags. Owned by the Rooster X theme.', 'ai-eshop-optimizer'),
            'meta'        => class_exists('\Rooster\Admin\States') ? \Rooster\Admin\States::status($master_on ? 'on' : 'off') : '',
            'footer'      => \Rooster\Admin\Ui::button(__('Open theme settings', 'ai-eshop-optimizer'), array('href' => admin_url('themes.php?page=rooster-settings'))),
        ));
        echo $open; 
        echo \Rooster\Admin\Ui::facts(array(array('label' => __('Setting', 'ai-eshop-optimizer'), 'code' => 'rooster_iapi_enabled'))); 
        echo $close; 

        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor'      => 'iapi-cutover',
            'icon'        => 'layers',
            'title'       => __('Per-module cutover', 'ai-eshop-optimizer'),
            'description' => __('Each module has three states: Inherit (= Off — explicit cutover required), On (use the IAPI shim when production-ready), Off (force legacy jQuery). Scaffold modules are blocked by a safety gate even when set to On.', 'ai-eshop-optimizer'),
            'footer'      => \Rooster\Admin\Ui::button(__('Save Changes', 'ai-eshop-optimizer'), array('variant' => 'primary', 'type' => 'submit', 'attrs' => array('form' => 'aieo-iapi-form'))),
        ));
        echo $open; 
        echo '<form id="aieo-iapi-form" method="post" action="' . esc_url(admin_url('admin-post.php')) . '">'
            . '<input type="hidden" name="action" value="' . esc_attr(self::FORM_ACTION) . '">';
        wp_nonce_field(self::NONCE_ACTION);
        $rows = '';
        foreach ($modules as $slug => $info) {
            $opt_key   = 'aieo_dmm_' . $slug . '_iapi_enabled';
            $current   = (string) get_option($opt_key, 'inherit');
            $status    = isset($statuses[$slug]) ? (string) $statuses[$slug] : 'unknown';
            $is_active = method_exists('AIEO_DMM', 'is_iapi_enabled') ? AIEO_DMM::is_iapi_enabled($slug) : false;
            $help      = \Rooster\Admin\Ui::badge($status, isset($tones[$status]) ? $tones[$status] : 'mono', array('sm' => true))
                . ' ' . esc_html($info['desc']) . '<br>'
                . sprintf(
                    
                    esc_html__('option %1$s = %2$s · resolves: %3$s', 'ai-eshop-optimizer'),
                    '<code>' . esc_html($opt_key) . '</code>',
                    '<code>' . esc_html($current) . '</code>',
                    $is_active
                        ? \Rooster\Admin\Ui::badge(_x('IAPI', 'IAPI branch label', 'ai-eshop-optimizer'), 'success', array('sm' => true))
                        : \Rooster\Admin\Ui::badge(_x('legacy', 'legacy branch label', 'ai-eshop-optimizer'), 'mono', array('sm' => true))
                );
            if ('scaffold' === $status && 'yes' === $current) {
                $help .= '<br>' . esc_html__('Scaffold gate active — flag is ignored. Override with the aieo/iapi/allow_scaffold filter for dev only.', 'ai-eshop-optimizer');
            }
            $rows .= \Rooster\Admin\Ui::field_row(array(
                'id'        => 'aieo-iapi-' . $slug,
                'label'     => (string) $info['label'],
                'group'     => true,
                'help_html' => $help,
                'control'   => \Rooster\Admin\Ui::checks('aieo_iapi[' . $slug . ']', array(
                    'inherit' => __('Inherit', 'ai-eshop-optimizer'),
                    'yes'     => __('On', 'ai-eshop-optimizer'),
                    'no'      => __('Off', 'ai-eshop-optimizer'),
                ), array($current), array('type' => 'radio', 'inline' => true)),
            ));
        }
        echo '<div class="rooster-admin-fields">' . $rows . '</div></form>'; 
        echo $close; 

        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'iapi-smoke',
            'icon'   => 'search',
            'title'  => __('Smoke tests and inspection', 'ai-eshop-optimizer'),
        ));
        echo $open; 
        
        echo '<div class="rooster-admin-row">'
            . \Rooster\Admin\Ui::button(__('Open frontend', 'ai-eshop-optimizer'), array('href' => home_url('/'), 'external' => true)) . ' '
            . \Rooster\Admin\Ui::button(__('Pricing batch endpoint', 'ai-eshop-optimizer'), array('href' => rest_url('aieo/v1/pricing/batch'), 'external' => true))
            . '</div>'; 
        echo '<p><strong>' . esc_html__('DevTools console one-liners:', 'ai-eshop-optimizer') . '</strong></p>';
        echo '<pre class="rooster-admin-code">' . esc_html("// after adding to cart on the frontend:\naieo.iapi.stores.cart.state.fragments\n\n// pricing batch round-trip:\naieo.iapi.stores.pricing.actions.prefetch([487390])\n  .then(() => aieo.iapi.stores.pricing.state.effectivePrice)\n\n// wishlist state:\naieo.iapi.stores.wishlist.state.productIds") . '</pre>';
        echo $close; 

        
        $runtime_dir = defined('AIEO_RUNTIME_DIR') ? AIEO_RUNTIME_DIR : '';
        if ($runtime_dir) {
            list($open, $close) = AIEO_DMM_UI::card(array(
                'anchor' => 'iapi-docs',
                'icon'   => 'book-open',
                'title'  => __('Docs', 'ai-eshop-optimizer'),
            ));
            echo $open; 
            echo '<p>' . wp_kses_post(sprintf(
                
                __('Companion docs live in the runtime plugin: %s', 'ai-eshop-optimizer'),
                '<code>' . esc_html($runtime_dir) . '</code>'
            )) . '</p>';
            echo \Rooster\Admin\Ui::facts(array( 
                array('label' => 'CONTRACT.md', 'value' => __('public DOM/JS surface', 'ai-eshop-optimizer')),
                array('label' => 'STATUS.md', 'value' => __('what\'s done + open TODOs (incl. multi-select swatches)', 'ai-eshop-optimizer')),
                array('label' => 'ROADMAP.md', 'value' => __('sequenced next phases', 'ai-eshop-optimizer')),
            ));
            echo $close; 
        }
        if ($board) {
            \Rooster\Admin\Board::end();
        }
        echo '</div>';
    }

    public function handle_save() {
        if (!current_user_can(self::CAPABILITY)) {
            wp_die(esc_html__('Insufficient permissions.', 'ai-eshop-optimizer'));
        }
        check_admin_referer(self::NONCE_ACTION);

        $allowed_slugs = array_keys($this->modules());
        $allowed_vals  = array('inherit', 'yes', 'no');

        $submitted = isset($_POST['aieo_iapi']) && is_array($_POST['aieo_iapi'])
            ? wp_unslash($_POST['aieo_iapi'])
            : array();

        foreach ($allowed_slugs as $slug) {
            $value = isset($submitted[$slug]) ? sanitize_key($submitted[$slug]) : 'inherit';
            if (!in_array($value, $allowed_vals, true)) { $value = 'inherit'; }
            update_option('aieo_dmm_' . $slug . '_iapi_enabled', $value, false);
        }

        wp_safe_redirect(add_query_arg(
            array('page' => self::MENU_SLUG, 'aieo_iapi_saved' => '1'),
            admin_url('admin.php')
        ));
        exit;
    }
}