<?php

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

class AIEO_DMM_Events extends AIEO_DMM_Module_Base {

    const NONCE = 'aieo_events';

    const SETTINGS_OPTION = 'aieo_events_settings';

    public function get_id()       { return 'events'; }
    public function get_icon()     { return 'calendar-days'; }
    public function get_label()    { return __('Events', 'ai-eshop-optimizer'); }
    public function get_priority() { return 45; } 
    public function get_group()    { return 'custom_post_types'; }

    public function is_pro_locked() { return true; }

    public function get_pro_promo() {
        return array(
            'title'       => __('Events', 'ai-eshop-optimizer'),
            'description' => __('Run events — launches, brand presentations, professional seminars — with a branded landing page, desktop/mobile creatives, a guest list, invitation emails and RSVP tracking.', 'ai-eshop-optimizer'),
            'bullets'     => array(
                __('Schedule with start, end and RSVP deadline', 'ai-eshop-optimizer'),
                __('Branded landing page with desktop + mobile creatives', 'ai-eshop-optimizer'),
                __('Associate brands, categories and products', 'ai-eshop-optimizer'),
                __('Invitation subject + rich-text invitation body', 'ai-eshop-optimizer'),
                __('Guest list with invited / confirmed / declined tracking', 'ai-eshop-optimizer'),
            ),
        );
    }

    public function register_hooks() {
        
        
        if (!class_exists('AIEO_Event_CPT') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-cpt.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-cpt.php';
        }
        if (class_exists('AIEO_Event_CPT')) {
            AIEO_Event_CPT::register();
        }
        
        
        
        if (!class_exists('AIEO_Event_Participants') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-participants.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-participants.php';
        }
        if (class_exists('AIEO_Event_Participants') && method_exists('AIEO_Event_Participants', 'register')) {
            AIEO_Event_Participants::register();
        }
        
        if (!class_exists('AIEO_Event_RSVP') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-rsvp.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-rsvp.php';
        }
        if (class_exists('AIEO_Event_RSVP') && method_exists('AIEO_Event_RSVP', 'register')) {
            AIEO_Event_RSVP::register();
        }
        
        
        if (!class_exists('AIEO_Event_SelfReg') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-selfreg.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-selfreg.php';
        }
        if (class_exists('AIEO_Event_SelfReg') && method_exists('AIEO_Event_SelfReg', 'register')) {
            AIEO_Event_SelfReg::register();
        }
        add_action('wp_ajax_aieo_events_save', array($this, 'ajax_save'));
        add_action('wp_ajax_aieo_events_settings_save', array($this, 'ajax_save_settings'));

        
        
        add_action('admin_post_aieo_events_import', array($this, 'handle_import'));
        add_action('admin_post_aieo_events_participant_delete', array($this, 'handle_participant_delete'));

        
        add_action('admin_post_aieo_events_invites_send', array($this, 'handle_invites_send'));
        add_action('admin_post_aieo_events_invites_settings', array($this, 'handle_invites_settings'));

        
        add_action('admin_post_aieo_events_export', array($this, 'handle_export'));
    }

    
    private static function tab_url($args = array()) {
        $url = admin_url('admin.php?page=ai-eshop-dmm&dmm_tab=events');
        return empty($args) ? $url : add_query_arg($args, $url);
    }

    
    public static function get_settings() {
        $s = get_option(self::SETTINGS_OPTION, array());
        return is_array($s) ? $s : array();
    }

    public function enqueue_admin_assets() {
        if (!self::is_aieo_pro_user()) { return; } 
        wp_enqueue_media();
        $css = 'assets/css/aieo-events-admin.css';
        wp_enqueue_style('aieo-events-admin', plugins_url($css, AIEO_FILE), array(), file_exists(AIEO_DIR . $css) ? (string) filemtime(AIEO_DIR . $css) : '1');
        
        
        if (class_exists('AIEO_Event_CPT') && method_exists('AIEO_Event_CPT', 'enqueue_picker_bundle')) {
            AIEO_Event_CPT::enqueue_picker_bundle();
        }
        $handle = 'aieo-events-admin';
        wp_enqueue_script(
            $handle,
            plugins_url('assets/js/aieo-events-admin.js', AIEO_FILE),
            array('jquery'),
            defined('AIEO_VERSION') ? AIEO_VERSION : '1.0',
            true
        );
        wp_localize_script($handle, 'aieoEvents', array(
            'ajaxurl' => admin_url('admin-ajax.php'),
            'nonce'   => wp_create_nonce(self::NONCE),
            'i18n'    => array(
                'select' => __('Select image', 'ai-eshop-optimizer'),
                'use'    => __('Use this image', 'ai-eshop-optimizer'),
                'saving' => __('Saving…', 'ai-eshop-optimizer'),
                'saved'  => __('Saved.', 'ai-eshop-optimizer'),
                'noname' => __('Please enter an event name.', 'ai-eshop-optimizer'),
                'error'  => __('Error', 'ai-eshop-optimizer'),
                'failed' => __('Network error.', 'ai-eshop-optimizer'),
            ),
        ));
    }

    public function render_subtab() {
        
        $manage_id = isset($_GET['manage']) ? (int) $_GET['manage'] : 0; 
        if ($manage_id > 0 && class_exists('AIEO_Event_CPT') && get_post_type($manage_id) === AIEO_Event_CPT::POST_TYPE) {
            $this->render_manage_screen($manage_id);
            return;
        }

        

        
        
        
        
        
        
        
        
        
        
        rooster_admin_band_open(array('cols' => 2));
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor'      => 'events-new-event',
            'icon'        => 'calendar-plus',
            'title'       => __('New event', 'ai-eshop-optimizer'),
            'description' => __('Create an event, set its schedule and location, add a short description and desktop/mobile creatives, then compose the invitation. Each event becomes a landing page (use the native editor for the full agenda). Guest import, invitation send and RSVP tracking are managed per event.', 'ai-eshop-optimizer'),
            'col'         => 1,
            'footer'      => '<button type="submit" class="rooster-admin-button rooster-admin-button--primary" id="aieo-event-create-btn" form="aieo-event-create">' . esc_html__('Create event', 'ai-eshop-optimizer') . '</button>'
                . '<span id="aieo-event-create-status" class="rooster-admin-saved" role="status" aria-live="polite"></span>',
        ));
        echo $open; 
        
        
        
        
        
        echo '<form id="aieo-event-create">';
        echo '<input type="hidden" id="aieo-event-post-id" value="0">';
        echo '<div class="rooster-admin-fields">';

        echo AIEO_Kit::row(__('Name', 'ai-eshop-optimizer'), \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-name', 'medium' => true, 'placeholder' => __('e.g. Spring Brand Showcase 2026', 'ai-eshop-optimizer'))), '', array('id' => 'aieo-event-name')); 

        $event_row = \Rooster\Admin\Fields::compound(
            array(
                array('label' => __('Starts', 'ai-eshop-optimizer'), 'id' => 'aieo-event-start', 'control' => \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-start', 'type' => 'datetime-local'))),
                array('label' => __('Ends', 'ai-eshop-optimizer'), 'id' => 'aieo-event-end', 'control' => \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-end', 'type' => 'datetime-local'))),
                array('label' => __('RSVP deadline', 'ai-eshop-optimizer'), 'id' => 'aieo-event-rsvp-deadline', 'control' => \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-rsvp-deadline', 'type' => 'datetime-local'))),
            ),
            array('label' => __('Schedule', 'ai-eshop-optimizer'))
        );
        echo AIEO_Kit::row(__('Schedule', 'ai-eshop-optimizer'), $event_row, __('Optional. Visitors see a “coming soon” notice before the start and an “ended” message after the end; shop managers always see the live page. Leave start/end empty for an always-open event. The RSVP deadline is the date by which guests must respond.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-schedule', 'group' => true)); 

        echo AIEO_Kit::row(__('Location', 'ai-eshop-optimizer'), \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-location', 'medium' => true, 'placeholder' => __('e.g. Athens Concert Hall, Hall B', 'ai-eshop-optimizer'))), '', array('id' => 'aieo-event-location')); 

        echo AIEO_Kit::row(__('Map link', 'ai-eshop-optimizer'), \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-map-url', 'type' => 'url', 'placeholder' => 'https://maps.google.com/…')), __('Optional Google Maps URL for directions. If empty, a Maps search link is built from the location.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-map-url')); 

        echo AIEO_Kit::row(__('Short description', 'ai-eshop-optimizer'), \Rooster\Admin\Ui::textarea('', '', array('id' => 'aieo-event-desc', 'rows' => 3)), __('A one-line summary. Use the native post editor for the full agenda after creating the event.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-desc')); 

        echo AIEO_Kit::row(__('Creatives', 'ai-eshop-optimizer'), '<div class="aieo-event-images">' . $this->image_field('desktop', __('Desktop image', 'ai-eshop-optimizer')) . $this->image_field('mobile', __('Mobile image', 'ai-eshop-optimizer')) . '</div>', '', array('id' => 'aieo-event-creatives', 'group' => true)); 

        
        
        echo '</div>';
        
        ob_start();
        echo '<div class="rooster-admin-fields">';
        echo AIEO_Kit::row(__('Brands', 'ai-eshop-optimizer'), '<select id="aieo-event-brands" multiple class="aieo-dmm-brand-select rooster-admin-select aieo-event-wide"></select>', __('Optional — associate brands so you can later monitor the products they pull.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-brands')); 
        echo AIEO_Kit::row(__('Categories', 'ai-eshop-optimizer'), '<select id="aieo-event-categories" multiple class="aieo-dmm-category-select rooster-admin-select aieo-event-wide"></select>', __('Optional — associate product categories.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-categories')); 
        if (class_exists('AIEO_DMM_Product_Picker')) {
            $event_picker = AIEO_DMM_Product_Picker::render_field(array(
                'name'       => 'event_products',
                'mode'       => 'include',
                'selected'   => array(),
                'bare'       => true,
                'empty_text' => __('No products associated.', 'ai-eshop-optimizer'),
            ));
            echo AIEO_Kit::row(__('Products', 'ai-eshop-optimizer'), $event_picker, __('Optional — specific products associated with this event (to monitor their pull).', 'ai-eshop-optimizer'), array('id' => 'aieo-event-products', 'group' => true)); 
        }
        echo '</div>';
        echo \Rooster\Admin\Ui::fold(__('Associated brands / categories / products', 'ai-eshop-optimizer'), (string) ob_get_clean()); 
        echo '<div class="rooster-admin-fields">';

        
        if (class_exists('AIEO_Event_CPT') && method_exists('AIEO_Event_CPT', 'gf_form_options')) {
            echo AIEO_Kit::row(__('Self-registration form', 'ai-eshop-optimizer'), AIEO_Kit::select('aieo-event-gf', AIEO_Event_CPT::gf_form_options(0), '0', array('id' => 'aieo-event-gf')), __('Optional — a Gravity Form guests can use to register themselves (the self-registration front-end is added in a later phase).', 'ai-eshop-optimizer'), array('id' => 'aieo-event-gf')); 
        }

        
        echo AIEO_Kit::row(__('Invitation subject', 'ai-eshop-optimizer'), \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-invite-subject', 'medium' => true, 'placeholder' => __('e.g. You’re invited — Spring Brand Showcase', 'ai-eshop-optimizer'))), '', array('id' => 'aieo-event-invite-subject')); 
        ob_start();
        echo '<div class="aieo-event-editor-tools">' . AIEO_Kit::button(__('Add Media', 'ai-eshop-optimizer'), array('size' => 'sm', 'icon' => 'image', 'class' => 'aieo-event-insert-media', 'attrs' => array('data-editor' => 'aieoeventinvitebody', 'aria-haspopup' => 'dialog'))) . '</div>'; 
        wp_editor('', 'aieoeventinvitebody', array(
            'textarea_name' => 'invite_body',
            'textarea_rows' => 8,
            'media_buttons' => false,
            'teeny'         => false,
            'tinymce'       => true,
            'quicktags'     => true,
        ));
        echo AIEO_Kit::row(__('Invitation body', 'ai-eshop-optimizer'), (string) ob_get_clean(), __('The invitation email content (sent to your guest list in a later phase). Rich text and images are supported.', 'ai-eshop-optimizer'), array('id' => 'aieoeventinvitebody')); 

        
        $cur_sym = function_exists('get_woocommerce_currency_symbol') ? get_woocommerce_currency_symbol() : '';
        $cur_code = function_exists('get_woocommerce_currency') ? get_woocommerce_currency() : '';
        $event_row = \Rooster\Admin\Fields::compound(
            array(
                array('label' => trim(sprintf(__('Fee %s', 'ai-eshop-optimizer'), $cur_sym !== '' ? '(' . $cur_sym . ')' : '')), 'id' => 'aieo-event-fee', 'control' => \Rooster\Admin\Ui::input('', '', array('id' => 'aieo-event-fee', 'type' => 'number', 'short' => true, 'min' => 0, 'step' => 'any'))),
                array('label' => __('Currency', 'ai-eshop-optimizer'), 'id' => 'aieo-event-currency', 'control' => \Rooster\Admin\Ui::input('', (string) $cur_code, array('id' => 'aieo-event-currency', 'xs' => true, 'maxlength' => 3, 'class' => 'aieo-event-currency'))),
            ),
            array('label' => __('Admission fee', 'ai-eshop-optimizer'))
        );
        echo AIEO_Kit::row(__('Admission fee', 'ai-eshop-optimizer'), $event_row, __('Optional admission price. Not charged yet — recorded for a future paid-events phase.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-fee-group', 'group' => true)); 

        echo '</div>';
        echo '</form>';
        echo $close; 

        
        $events = get_posts(array(
            'post_type'   => AIEO_Event_CPT::POST_TYPE,
            'post_status' => array('publish', 'draft', 'pending', 'future'),
            'numberposts' => 200,
            'orderby'     => 'date',
            'order'       => 'DESC',
        ));
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-your-events',
            'icon'   => 'list',
            'title'  => __('Your events', 'ai-eshop-optimizer'),
            'description' => __('Every event you have created, with its status, schedule and participants; edit, view or duplicate one.', 'ai-eshop-optimizer'),
            'col'    => 2,
            'flush'  => true, 
        ));
        echo $open; 
        if (empty($events)) {
            
            echo \Rooster\Admin\States::state('first-use', array('title' => __('No events yet — create one above.', 'ai-eshop-optimizer'))); 
        } else {
            
            $sstate_labels = array('before' => __('upcoming', 'ai-eshop-optimizer'), 'live' => __('live', 'ai-eshop-optimizer'), 'ended' => __('ended', 'ai-eshop-optimizer'));
            $ev_rows = array();
            foreach ($events as $e) {
                $edit = get_edit_post_link($e->ID);
                $view = get_permalink($e->ID);
                $ev_name = get_the_title($e) ?: __('(untitled)', 'ai-eshop-optimizer');
                $sstate = method_exists('AIEO_Event_CPT', 'schedule_state') ? AIEO_Event_CPT::schedule_state($e->ID) : 'live';
                $start_disp = AIEO_Event_CPT::fmt_dt(get_post_meta($e->ID, AIEO_Event_CPT::META_START, true));
                $end_disp   = AIEO_Event_CPT::fmt_dt(get_post_meta($e->ID, AIEO_Event_CPT::META_END, true));
                if ($start_disp === '' && $end_disp === '') {
                    $sched_html = esc_html__('Always open', 'ai-eshop-optimizer');
                } else {
                    $sched_html = esc_html__('Starts', 'ai-eshop-optimizer') . ': ' . esc_html($start_disp !== '' ? $start_disp : '—')
                        . '<br>' . esc_html__('Ends', 'ai-eshop-optimizer') . ': ' . esc_html($end_disp !== '' ? $end_disp : '—');
                }
                $c = class_exists('AIEO_Event_Participants') ? AIEO_Event_Participants::counts($e->ID) : array('invited' => 0, 'confirmed' => 0, 'declined' => 0, 'total' => 0);
                $manage = self::tab_url(array('manage' => $e->ID));
                $acts = array(
                    array('label' => __('Edit', 'ai-eshop-optimizer'), 'url' => $edit),
                    array('label' => __('View', 'ai-eshop-optimizer'), 'url' => $view, 'attrs' => array('target' => '_blank', 'rel' => 'noopener')),
                );
                if (class_exists('AIEO_Post_Duplicator')) {
                    $acts[] = array('label' => __('Duplicate', 'ai-eshop-optimizer'), 'url' => AIEO_Post_Duplicator::url($e->ID));
                }
                $ev_rows[] = array(
                    '_id'          => (int) $e->ID,
                    '_name'        => $ev_name,
                    'name'         => array('title' => $ev_name, 'url' => $edit),
                    'status'       => array('label' => get_post_status($e) . ' · ' . (isset($sstate_labels[$sstate]) ? $sstate_labels[$sstate] : $sstate), 'tone' => 'mono'),
                    'schedule'     => array('html' => $sched_html),
                    'participants' => array('html' => (int) $c['total'] . ' <span class="rooster-admin-table__sub">('
                        . (int) $c['confirmed'] . ' ' . esc_html__('confirmed', 'ai-eshop-optimizer')
                        . ', ' . (int) $c['invited'] . ' ' . esc_html__('invited', 'ai-eshop-optimizer')
                        . ((int) $c['declined'] > 0 ? ', ' . (int) $c['declined'] . ' ' . esc_html__('declined', 'ai-eshop-optimizer') : '')
                        . ')</span><br><a href="' . esc_url($manage) . '">' . esc_html__('Manage participants →', 'ai-eshop-optimizer') . '</a>'),
                    'page'         => $acts,
                );
            }
            echo \Rooster\Admin\Ui::table( 
                array(
                    array('key' => 'name', 'label' => __('Name', 'ai-eshop-optimizer'), 'type' => 'text'),
                    array('key' => 'status', 'label' => __('Status', 'ai-eshop-optimizer'), 'type' => 'status'),
                    array('key' => 'schedule', 'label' => __('Schedule', 'ai-eshop-optimizer'), 'type' => 'html'),
                    array('key' => 'participants', 'label' => __('Participants', 'ai-eshop-optimizer'), 'type' => 'html'),
                    array('key' => 'page', 'label' => __('Page', 'ai-eshop-optimizer'), 'type' => 'actions'),
                ),
                $ev_rows,
                array('id' => 'aieo-events-list', 'caption' => esc_html__('Your events', 'ai-eshop-optimizer'))
            );
        }
        echo $close; 

        
        $eset      = self::get_settings();
        $msg_soon  = isset($eset['msg_soon'])  ? (string) $eset['msg_soon']  : '';
        $msg_ended = isset($eset['msg_ended']) ? (string) $eset['msg_ended'] : '';
        $msg_form = 'aieo-card-events-page-messages-form';
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor'      => 'events-page-messages',
            'icon'        => 'message-square-text',
            'title'       => __('Before and after event messages', 'ai-eshop-optimizer'),
            'description' => __('Shown on the event page to visitors. These apply to ALL events. Leave a field empty to use the built-in (translatable) default.', 'ai-eshop-optimizer'),
            'col'         => 2,
            'footer'      => class_exists('\Rooster\Admin\States') ? \Rooster\Admin\States::save_button($msg_form) : '',
        ));
        echo $open; 
        ob_start();
        
        echo '<div class="rooster-admin-fields">';
        echo AIEO_Kit::row(__('“Coming soon” message', 'ai-eshop-optimizer'), AIEO_Kit::textarea('msg_soon', $msg_soon, array('id' => 'aieo-event-msg-soon', 'rows' => 2)), __('Shown before an event starts. Use %s where the start date should appear (optional).', 'ai-eshop-optimizer'), array('id' => 'aieo-event-msg-soon')); 
        echo AIEO_Kit::row(__('“Ended” message', 'ai-eshop-optimizer'), AIEO_Kit::textarea('msg_ended', $msg_ended, array('id' => 'aieo-event-msg-ended', 'rows' => 2)), __('Shown after an event ends.', 'ai-eshop-optimizer'), array('id' => 'aieo-event-msg-ended')); 
        echo '</div>';
        
        echo AIEO_DMM_UI::card_form('aieo_events_settings_save', $this->get_id() . '_messages', $msg_form, (string) ob_get_clean(), array('nonce' => wp_create_nonce(self::NONCE), 'nonce_name' => 'nonce')); 
        echo $close; 
        rooster_admin_band_close();
    }

    public function ajax_save_settings() {
        if (!check_ajax_referer(self::NONCE, 'nonce', false)) {
            wp_send_json_error(array('message' => __('Security check failed.', 'ai-eshop-optimizer')));
        }
        if (!current_user_can('edit_posts')) {
            wp_send_json_error(array('message' => __('You are not allowed to do this.', 'ai-eshop-optimizer')));
        }
        $ended = isset($_POST['msg_ended']) ? sanitize_textarea_field(wp_unslash($_POST['msg_ended'])) : '';
        $soon  = isset($_POST['msg_soon'])  ? sanitize_textarea_field(wp_unslash($_POST['msg_soon']))  : '';
        $settings = self::get_settings(); 
        $settings['msg_soon']  = $soon;
        $settings['msg_ended'] = $ended;
        update_option(self::SETTINGS_OPTION, $settings, false);
        wp_send_json_success(array('saved' => true));
    }

    
    private function image_field($which, $label) {
        $id = 'aieo-event-image-' . $which;
        return '<div class="aieo-event-image-field" data-which="' . esc_attr($which) . '" role="group" aria-labelledby="' . esc_attr($id) . '-label">'
            . '<span class="aieo-event-image-label" id="' . esc_attr($id) . '-label">' . esc_html($label) . '</span>'
            . '<img class="aieo-event-image-preview" src="" alt="" hidden>'
            . '<input type="hidden" class="aieo-event-image-id" value="0">'
            . '<span class="aieo-event-image-buttons">'
            . AIEO_Kit::button(__('Select image', 'ai-eshop-optimizer'), array('class' => 'aieo-event-image-select'))
            . AIEO_Kit::button(__('Remove', 'ai-eshop-optimizer'), array('variant' => 'ghost', 'size' => 'sm', 'class' => 'aieo-event-image-remove', 'attrs' => array('hidden' => true)))
            . '</span></div>';
    }

    public function ajax_save() {
        if (!check_ajax_referer(self::NONCE, 'nonce', false)) {
            wp_send_json_error(array('message' => __('Security check failed.', 'ai-eshop-optimizer')));
        }
        if (!current_user_can('edit_posts')) {
            wp_send_json_error(array('message' => __('You are not allowed to do this.', 'ai-eshop-optimizer')));
        }
        if (!class_exists('AIEO_Event_CPT')) {
            wp_send_json_error(array('message' => __('Events are unavailable.', 'ai-eshop-optimizer')));
        }
        $post_id = isset($_POST['post_id']) ? (int) $_POST['post_id'] : 0;
        $name    = isset($_POST['name']) ? sanitize_text_field(wp_unslash($_POST['name'])) : '';
        if ($name === '') {
            wp_send_json_error(array('message' => __('Please enter an event name.', 'ai-eshop-optimizer')));
        }

        $location      = isset($_POST['location'])      ? sanitize_text_field(wp_unslash($_POST['location']))          : '';
        $desc          = isset($_POST['short_desc'])    ? sanitize_textarea_field(wp_unslash($_POST['short_desc']))    : '';
        $img_d         = isset($_POST['img_desktop'])   ? (int) $_POST['img_desktop']                                  : 0;
        $img_m         = isset($_POST['img_mobile'])    ? (int) $_POST['img_mobile']                                   : 0;
        $start         = isset($_POST['start'])         ? sanitize_text_field(wp_unslash($_POST['start']))            : '';
        $end           = isset($_POST['end'])           ? sanitize_text_field(wp_unslash($_POST['end']))              : '';
        $rsvp_deadline = isset($_POST['rsvp_deadline']) ? sanitize_text_field(wp_unslash($_POST['rsvp_deadline']))    : '';
        $gf            = isset($_POST['gf_id'])          ? (int) $_POST['gf_id']                                        : 0;

        $invite_subject = isset($_POST['invite_subject']) ? sanitize_text_field(wp_unslash($_POST['invite_subject'])) : '';
        $invite_body    = isset($_POST['invite_body'])    ? wp_kses_post(wp_unslash($_POST['invite_body']))           : '';

        $fee      = isset($_POST['fee'])      ? (float) $_POST['fee']                                              : 0;
        $currency = isset($_POST['currency']) ? strtoupper(sanitize_text_field(wp_unslash($_POST['currency'])))   : '';

        $brands     = isset($_POST['brands'])     ? array_map('intval', (array) wp_unslash($_POST['brands']))     : array();
        $categories = isset($_POST['categories']) ? array_map('intval', (array) wp_unslash($_POST['categories'])) : array();
        $products   = class_exists('AIEO_DMM_Product_Picker')
            ? AIEO_DMM_Product_Picker::roll_up_to_parents(AIEO_DMM_Product_Picker::collect_ids('event_products'))
            : (isset($_POST['event_products']) ? array_map('intval', (array) wp_unslash($_POST['event_products'])) : array());

        $args = array(
            'post_type'   => AIEO_Event_CPT::POST_TYPE,
            'post_title'  => $name,
            'post_status' => 'publish',
        );
        if ($post_id > 0) {
            $args['ID'] = $post_id;
            $res = wp_update_post($args, true);
        } else {
            $res = wp_insert_post($args, true);
        }
        if (is_wp_error($res)) {
            wp_send_json_error(array('message' => $res->get_error_message()));
        }
        $post_id = (int) $res;

        
        
        
        AIEO_Event_CPT::persist_fields(
            $post_id, $gf, $desc, $location, $img_d, $img_m,
            $start, $end, $rsvp_deadline, $brands, $categories, $products, $fee, $currency
        );
        
        
        update_post_meta($post_id, AIEO_Event_CPT::META_INVITE_SUBJECT, $invite_subject);
        update_post_meta($post_id, AIEO_Event_CPT::META_INVITE_BODY, $invite_body);

        $map_url = isset($_POST['map_url']) ? esc_url_raw(wp_unslash($_POST['map_url'])) : '';
        update_post_meta($post_id, AIEO_Event_CPT::META_MAP_URL, $map_url);

        wp_send_json_success(array(
            'post_id'  => $post_id,
            'title'    => get_the_title($post_id),
            'edit_url' => get_edit_post_link($post_id, 'raw'),
            'view_url' => get_permalink($post_id),
            'status'   => get_post_status($post_id),
        ));
    }

    

    
    private static function stash_result($data) {
        set_transient('aieo_events_import_' . get_current_user_id(), $data, 60);
    }

    
    private static function pull_result() {
        $k = 'aieo_events_import_' . get_current_user_id();
        $d = get_transient($k);
        if ($d !== false) { delete_transient($k); }
        return is_array($d) ? $d : null;
    }

    
    private function render_manage_screen($event_id) {
        $event_id = (int) $event_id;
        $title    = get_the_title($event_id);

        
        
        
        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-guests-summary',
            'icon'   => 'users',
            'title'  => sprintf(__('Participants — %s', 'ai-eshop-optimizer'), $title !== '' ? $title : __('(untitled)', 'ai-eshop-optimizer')),
            'span'   => 'all',
        ));
        echo $open; 
        echo '<p><a href="' . esc_url(self::tab_url()) . '">&larr; ' . esc_html__('Back to events', 'ai-eshop-optimizer') . '</a></p>';

        
        
        $res = self::pull_result();
        if ($res) {
            if (!empty($res['error'])) {
                echo AIEO_DMM_UI::notice(esc_html((string) $res['error']), 'destructive'); 
            } elseif (!empty($res['notice'])) {
                echo AIEO_DMM_UI::notice(esc_html((string) $res['notice']), 'success'); 
            } else {
                $mode_label = (isset($res['mode']) && $res['mode'] === 'overwrite') ? __('Overwrite', 'ai-eshop-optimizer') : __('Update', 'ai-eshop-optimizer');
                $line = sprintf(
                    
                    __('%1$s complete — %2$d rows read: %3$d added, %4$d updated, %5$d removed, %6$d skipped.', 'ai-eshop-optimizer'),
                    $mode_label,
                    (int) ($res['total'] ?? 0), (int) ($res['inserted'] ?? 0), (int) ($res['updated'] ?? 0),
                    (int) ($res['removed'] ?? 0), (int) ($res['skipped'] ?? 0)
                );
                $detail = '';
                if (!empty($res['errors']) && is_array($res['errors'])) {
                    $shown   = array_slice($res['errors'], 0, 12);
                    $detail .= '<ul class="aieo-event-errors rooster-admin-reason">';
                    foreach ($shown as $err) { $detail .= '<li>' . esc_html((string) $err) . '</li>'; }
                    if (count($res['errors']) > count($shown)) {
                        $detail .= '<li>' . esc_html(sprintf(__('…and %d more.', 'ai-eshop-optimizer'), count($res['errors']) - count($shown))) . '</li>';
                    }
                    $detail .= '</ul>';
                }
                echo AIEO_DMM_UI::notice(esc_html($line), !empty($res['errors']) ? 'warning' : 'success', array('detail' => $detail)); 
            }
        }

        $st = class_exists('AIEO_Event_Participants')
            ? AIEO_Event_Participants::stats($event_id)
            : array('total' => 0, 'confirmed' => 0, 'declined' => 0, 'invited' => 0, 'responded' => 0, 'response_rate' => 0, 'imported' => 0, 'self_registered' => 0, 'invited_sent' => 0);
        $chip = static function ($label, $value, $color, $suffix = '') {
            return '<span class="aieo-event-chip is-' . esc_attr($color) . '"><strong>' . esc_html((string) $value . $suffix) . '</strong> <span class="rooster-admin-reason">' . esc_html($label) . '</span></span>';
        };
        echo '<div>';
        echo $chip(__('total', 'ai-eshop-optimizer'), (int) $st['total'], 'mono'); 
        echo $chip(__('confirmed', 'ai-eshop-optimizer'), (int) $st['confirmed'], 'success'); 
        echo $chip(__('declined', 'ai-eshop-optimizer'), (int) $st['declined'], 'destructive'); 
        echo $chip(__('awaiting reply', 'ai-eshop-optimizer'), (int) $st['invited'], 'warning'); 
        echo $chip(__('response rate', 'ai-eshop-optimizer'), (int) $st['response_rate'], 'info', '%'); 
        echo '</div>';
        echo '<p class="rooster-admin-reason">'
            . esc_html(sprintf(__('%1$d imported · %2$d self-registered · %3$d invitation(s) sent', 'ai-eshop-optimizer'), (int) $st['imported'], (int) $st['self_registered'], (int) $st['invited_sent']))
            . '</p>';
        echo $close; 

        
        
        
        
        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-guests-import',
            'icon'   => 'upload',
            'title'  => __('Import participants', 'ai-eshop-optimizer'),
            'col'    => 1,
            'footer' => AIEO_Kit::button(__('Upload and import', 'ai-eshop-optimizer'), array('variant' => 'primary', 'type' => 'submit', 'attrs' => array('form' => 'aieo-event-import-form'))),
        ));
        echo $open; 
        echo '<form id="aieo-event-import-form" method="post" enctype="multipart/form-data" action="' . esc_url(admin_url('admin-post.php')) . '">';
        echo '<input type="hidden" name="action" value="aieo_events_import">';
        echo '<input type="hidden" name="event_id" value="' . esc_attr($event_id) . '">';
        wp_nonce_field('aieo_events_import');
        echo '<p><input type="file" name="participants_file" class="aieo-filesubmit" accept=".xlsx,.csv" required aria-labelledby="aieo-card-events-guests-import-title"></p>'; 
        echo '<fieldset >';
        echo '<label class="rooster-admin-check"><input type="radio" name="mode" value="update" checked><span>' . esc_html__('Update', 'ai-eshop-optimizer') . ' — ' . esc_html__('add new guests and refresh existing ones (matched by email). Never removes anyone.', 'ai-eshop-optimizer') . '</span></label>';
        echo '<label class="rooster-admin-check"><input type="radio" name="mode" value="overwrite"><span>' . esc_html__('Overwrite', 'ai-eshop-optimizer') . ' — ' . esc_html__('make my imported list exactly match this file. Removes only the guests I previously imported who are no longer in the file (self-registrations, other staff’s imports and existing RSVP responses are kept).', 'ai-eshop-optimizer') . '</span></label>';
        echo '</fieldset>';
        echo '<p class="description">' . esc_html__('Accepted: .xlsx or .csv with a header row. Recognised columns (in your own language or English, any order): Salutation, Title, Name, Surname, Department, Organization, Email (required), Phone.', 'ai-eshop-optimizer') . '</p>';
        echo '</form>';
        echo $close; 

        
        $this->render_invites_card($event_id);

        
        
        
        
        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-guests-self-registration',
            'icon'   => 'user-plus',
            'title'  => __('Self-registration', 'ai-eshop-optimizer'),
            'col'    => 2,
        ));
        echo $open; 
        echo '<p class="description">' . esc_html__('Let guests sign themselves up: add the Rooster One “Event Registration” block to this event’s page, or paste the shortcode below into its content. Self-registrations appear in the guest list tagged “Self-registered”.', 'ai-eshop-optimizer') . '</p>';
        echo '<p><code>[aieo_event_register]</code>';
        $ev_edit = get_edit_post_link($event_id);
        if ($ev_edit) { echo ' &middot; <a href="' . esc_url($ev_edit) . '">' . esc_html__('Edit event →', 'ai-eshop-optimizer') . '</a>'; }
        echo '</p>';
        echo $close; 

        
        $search = isset($_GET['psearch']) ? sanitize_text_field(wp_unslash($_GET['psearch'])) : ''; 
        $per    = 50;
        $page   = max(1, isset($_GET['ppage']) ? (int) $_GET['ppage'] : 1); 
        $total  = class_exists('AIEO_Event_Participants') ? AIEO_Event_Participants::count_for_event($event_id, array('search' => $search)) : 0;
        $rows   = class_exists('AIEO_Event_Participants') ? AIEO_Event_Participants::get_for_event($event_id, array(
            'search'  => $search,
            'orderby' => 'last_name',
            'order'   => 'ASC',
            'limit'   => $per,
            'offset'  => ($page - 1) * $per,
        )) : array();

        
        
        
        
        
        
        
        
        $export = '';
        if ((int) $st['total'] > 0 && current_user_can(self::export_capability())) {
            $export_url = wp_nonce_url(admin_url('admin-post.php?action=aieo_events_export&event_id=' . $event_id), 'aieo_events_export');
            $export     = AIEO_Kit::button(__('Export to XLSX', 'ai-eshop-optimizer'), array('size' => 'sm', 'href' => $export_url));
        }
        
        
        
        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-guests-list',
            'icon'   => 'list',
            'title'  => __('Guest list', 'ai-eshop-optimizer'),
            'tools'  => $export,
            'span'   => 'all',
            'flush'  => true,
        ));
        echo $open; 

        
        
        
        echo '<form method="get" class="rooster-admin-filters">';
        echo '<input type="hidden" name="page" value="ai-eshop-dmm">';
        echo '<input type="hidden" name="dmm_tab" value="events">';
        echo '<input type="hidden" name="manage" value="' . esc_attr($event_id) . '">';
        echo \Rooster\Admin\Ui::filter(__('Search', 'ai-eshop-optimizer'), \Rooster\Admin\Ui::input('psearch', $search, array('type' => 'search', 'id' => 'aieo-event-psearch', 'medium' => true, 'placeholder' => __('Search name, email, organization…', 'ai-eshop-optimizer'))), 'aieo-event-psearch'); 
        echo '<div class="rooster-admin-filters__actions">' . AIEO_Kit::button(__('Search', 'ai-eshop-optimizer'), array('type' => 'submit')) 
            . ($search !== '' ? AIEO_Kit::button(__('Clear', 'ai-eshop-optimizer'), array('variant' => 'ghost', 'href' => self::tab_url(array('manage' => $event_id)))) : '') . '</div>';
        echo '</form>';

        if (empty($rows)) {
            echo '<p>' . esc_html($search !== '' ? __('No matching participants.', 'ai-eshop-optimizer') : __('No participants yet — import a list above.', 'ai-eshop-optimizer')) . '</p>';
        } else {
            $src_labels = array('imported' => __('Imported', 'ai-eshop-optimizer'), 'self-registered' => __('Self-registered', 'ai-eshop-optimizer'));
            $rs_labels  = array('invited' => __('Invited', 'ai-eshop-optimizer'), 'confirmed' => __('Confirmed', 'ai-eshop-optimizer'), 'declined' => __('Declined', 'ai-eshop-optimizer'));
            
            
            $ep_rows = array();
            
            if (!class_exists('AIEO_Submission_Panel', false) && is_readable(AIEO_DIR . 'includes/dmm/class-aieo-submission-panel.php')) {
                require_once AIEO_DIR . 'includes/dmm/class-aieo-submission-panel.php';
            }
            $ep_leads = class_exists('AIEO_Submission_Panel')
                ? AIEO_Submission_Panel::keys_for('event', array_map(static function ($r) { return (int) $r->participant_id; }, (array) $rows))
                : array();
            foreach ($rows as $row) {
                $pid    = (int) $row->participant_id;
                $del    = wp_nonce_url(
                    admin_url('admin-post.php?action=aieo_events_participant_delete&event_id=' . $event_id . '&pid=' . $pid),
                    'aieo_events_pdel_' . $pid
                );
                $src    = isset($src_labels[$row->source]) ? $src_labels[$row->source] : $row->source;
                $rs     = isset($rs_labels[$row->rsvp_status]) ? $rs_labels[$row->rsvp_status] : $row->rsvp_status;
                $rsvp_url = class_exists('AIEO_Event_RSVP') ? AIEO_Event_RSVP::url($row->rsvp_token) : '';
                $acts = array();
                if ($rsvp_url !== '') {
                    $acts[] = array(
                        'label' => __('RSVP', 'ai-eshop-optimizer'),
                        'url'   => $rsvp_url,
                        'attrs' => array('target' => '_blank', 'rel' => 'noopener', 'title' => __('Open this guest’s RSVP page', 'ai-eshop-optimizer')),
                    );
                }
                if (isset($ep_leads[$pid])) {
                    $acts[] = array(
                        'label' => __('Campaign and journey', 'ai-eshop-optimizer'),
                        'url'   => AIEO_Submission_Panel::url($ep_leads[$pid]),
                    );
                }
                $acts[] = array(
                    'label'       => __('Remove', 'ai-eshop-optimizer'),
                    'url'         => $del,
                    'destructive' => true,
                    'attrs'       => \Rooster\Admin\States::confirm_attrs('aieo-event-remove-dialog'),
                );
                $ep_rows[] = array(
                    '_id'          => $pid,
                    '_name'        => trim($row->first_name . ' ' . $row->last_name),
                    'salutation'   => (string) $row->salutation,
                    'title'        => (string) $row->title,
                    'first_name'   => (string) $row->first_name,
                    'last_name'    => (string) $row->last_name,
                    'organization' => (string) $row->organization,
                    'department'   => (string) $row->department,
                    'email'        => (string) $row->email,
                    'phone'        => (string) $row->phone,
                    'source'       => (string) $src,
                    'rsvp'         => (string) $rs,
                    'actions'      => $acts,
                );
            }
            $ep_cols = array();
            foreach (array(
                'salutation'   => __('Salutation', 'ai-eshop-optimizer'), 'title' => __('Title', 'ai-eshop-optimizer'), 'first_name' => __('Name', 'ai-eshop-optimizer'),
                'last_name'    => __('Surname', 'ai-eshop-optimizer'), 'organization' => __('Organization', 'ai-eshop-optimizer'), 'department' => __('Department', 'ai-eshop-optimizer'),
                'email'        => __('Email', 'ai-eshop-optimizer'), 'phone' => __('Phone', 'ai-eshop-optimizer'), 'source' => __('Source', 'ai-eshop-optimizer'),
                'rsvp'         => __('RSVP', 'ai-eshop-optimizer'),
            ) as $ep_key => $ep_label) {
                $ep_cols[] = array('key' => $ep_key, 'label' => $ep_label, 'type' => 'text');
            }
            $ep_cols[] = array('key' => 'actions', 'label' => __('Actions', 'ai-eshop-optimizer'), 'type' => 'actions');
            $ep_pages  = (int) ceil($total / $per);
            echo \Rooster\Admin\Ui::table( 
                $ep_cols,
                $ep_rows,
                array(
                    'id'      => 'aieo-events-participants',
                    'caption' => esc_html__('Guest list', 'ai-eshop-optimizer'),
                    'scroll'  => true,
                    'footer'  => $ep_pages > 1 ? \Rooster\Admin\Ui::pager(
                        $page,
                        $ep_pages,
                        static function ($n) use ($event_id, $search) {
                            return self::tab_url(array('manage' => $event_id, 'psearch' => $search, 'ppage' => $n));
                        },
                        array('total' => (int) $total)
                    ) : '',
                )
            );
            echo '<p class="description">' . esc_html(sprintf(__('Showing %1$d of %2$d participants.', 'ai-eshop-optimizer'), count($rows), (int) $total)) . '</p>';
            
            
            echo \Rooster\Admin\States::confirm('aieo-event-remove-dialog', 'delete', __('Remove this participant?', 'ai-eshop-optimizer'), '', array('confirm' => __('Remove', 'ai-eshop-optimizer'))); 
        }
        echo $close; 
    }

    
    public function handle_import() {
        if (!current_user_can('edit_posts')) {
            wp_die(esc_html__('You are not allowed to do this.', 'ai-eshop-optimizer'));
        }
        check_admin_referer('aieo_events_import');

        $event_id = isset($_POST['event_id']) ? (int) $_POST['event_id'] : 0;
        $mode     = (isset($_POST['mode']) && $_POST['mode'] === 'overwrite') ? 'overwrite' : 'update';

        if ($event_id <= 0 || !class_exists('AIEO_Event_CPT') || get_post_type($event_id) !== AIEO_Event_CPT::POST_TYPE) {
            self::stash_result(array('error' => __('Invalid event.', 'ai-eshop-optimizer')));
            wp_safe_redirect(self::tab_url());
            exit;
        }
        $redirect = self::tab_url(array('manage' => $event_id));

        if (empty($_FILES['participants_file']) || !isset($_FILES['participants_file']['error']) || (int) $_FILES['participants_file']['error'] !== UPLOAD_ERR_OK) {
            self::stash_result(array('error' => __('No file was uploaded, or the upload failed.', 'ai-eshop-optimizer')));
            wp_safe_redirect($redirect);
            exit;
        }
        $file = $_FILES['participants_file']; 
        if (empty($file['tmp_name']) || !is_uploaded_file($file['tmp_name'])) {
            self::stash_result(array('error' => __('The upload could not be verified.', 'ai-eshop-optimizer')));
            wp_safe_redirect($redirect);
            exit;
        }
        $size = isset($file['size']) ? (int) $file['size'] : 0;
        if ($size <= 0 || $size > 12 * 1024 * 1024) {
            self::stash_result(array('error' => __('The file is empty or larger than 12 MB.', 'ai-eshop-optimizer')));
            wp_safe_redirect($redirect);
            exit;
        }
        $ext = strtolower(pathinfo(isset($file['name']) ? (string) $file['name'] : '', PATHINFO_EXTENSION));
        if (!in_array($ext, array('xlsx', 'csv'), true)) {
            self::stash_result(array('error' => __('Unsupported file type. Upload a .xlsx or .csv file.', 'ai-eshop-optimizer')));
            wp_safe_redirect($redirect);
            exit;
        }

        if (!class_exists('AIEO_Event_Importer') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-importer.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-importer.php';
        }
        if (!class_exists('AIEO_Event_Importer')) {
            self::stash_result(array('error' => __('The importer is unavailable.', 'ai-eshop-optimizer')));
            wp_safe_redirect($redirect);
            exit;
        }

        $parsed = AIEO_Event_Importer::parse_file($file['tmp_name'], $ext);
        if (is_wp_error($parsed)) {
            self::stash_result(array('error' => $parsed->get_error_message()));
            wp_safe_redirect($redirect);
            exit;
        }
        $summary         = AIEO_Event_Importer::run_import($event_id, $parsed, $mode, get_current_user_id());
        $summary['mode'] = $mode;
        self::stash_result($summary);
        wp_safe_redirect($redirect);
        exit;
    }

    
    public function handle_participant_delete() {
        if (!current_user_can('edit_posts')) {
            wp_die(esc_html__('You are not allowed to do this.', 'ai-eshop-optimizer'));
        }
        $event_id = isset($_GET['event_id']) ? (int) $_GET['event_id'] : 0;
        $pid      = isset($_GET['pid']) ? (int) $_GET['pid'] : 0;
        check_admin_referer('aieo_events_pdel_' . $pid);

        if ($event_id > 0 && $pid > 0 && class_exists('AIEO_Event_Participants')) {
            global $wpdb;
            $wpdb->delete(AIEO_Event_Participants::table(), array('participant_id' => $pid, 'event_id' => $event_id), array('%d', '%d'));
            self::stash_result(array('notice' => __('Participant removed.', 'ai-eshop-optimizer')));
        }
        wp_safe_redirect(self::tab_url(array('manage' => $event_id)));
        exit;
    }

    

    
    private function render_invites_card($event_id) {
        $event_id = (int) $event_id;
        if (!class_exists('AIEO_Event_Invites') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-invites.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-invites.php';
        }
        $subject = (string) get_post_meta($event_id, AIEO_Event_CPT::META_INVITE_SUBJECT, true);
        $body    = (string) get_post_meta($event_id, AIEO_Event_CPT::META_INVITE_BODY, true);
        
        $aieo_ev_ready = !($subject === '' || $body === '' || !class_exists('AIEO_Event_Invites'));
        $aieo_ev_live  = !empty(self::get_settings()['live_send']);

        
        
        
        
        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-guests-invitations',
            'icon'   => 'mail',
            'title'  => __('Invitations', 'ai-eshop-optimizer'),
            'col'    => 2,
            'footer' => $aieo_ev_ready ? AIEO_Kit::button($aieo_ev_live ? __('Send invitations', 'ai-eshop-optimizer') : __('Dry run (no emails sent)', 'ai-eshop-optimizer'), array('variant' => 'primary', 'type' => 'submit', 'attrs' => array('form' => 'aieo-event-send-form') + ($aieo_ev_live ? \Rooster\Admin\States::confirm_attrs('aieo-event-send-dialog') : array()))) : '',
        ));
        echo $open; 

        if ($subject === '' || $body === '' || !class_exists('AIEO_Event_Invites')) {
            echo '<p class="description">' . esc_html__('Set the invitation subject and body on the event’s edit screen, then return here to preview and send.', 'ai-eshop-optimizer') . ' ';
            $edit = get_edit_post_link($event_id);
            if ($edit) { echo '<a href="' . esc_url($edit) . '">' . esc_html__('Edit event →', 'ai-eshop-optimizer') . '</a>'; }
            echo '</p>';
            echo $close; 
            return;
        }

        echo '<p class="description">' . esc_html__('Merge tags for the subject and body:', 'ai-eshop-optimizer')
            . ' <code>{salutation}</code> <code>{title}</code> <code>{name}</code> <code>{first_name}</code> <code>{last_name}</code> <code>{organization}</code> <code>{department}</code> <code>{event_title}</code> <code>{event_date}</code> <code>{event_location}</code> <code>{event_map_link}</code> <code>{event_map_url}</code> <code>{rsvp_link}</code> <code>{rsvp_url}</code>. '
            . esc_html__('If you don’t place an RSVP tag, an RSVP button is appended automatically.', 'ai-eshop-optimizer') . '</p>';

        
        
        $settings = self::get_settings();
        $live     = !empty($settings['live_send']);
        ob_start();
        echo '<form id="aieo-event-live-form" method="post" action="' . esc_url(admin_url('admin-post.php')) . '" class="aieo-event-live' . ($live ? ' is-on' : '') . '">';
        echo '<input type="hidden" name="action" value="aieo_events_invites_settings">';
        echo '<input type="hidden" name="event_id" value="' . esc_attr($event_id) . '">';
        wp_nonce_field('aieo_events_invites_settings');
        echo '<label class="rooster-admin-check is-bare" ><input type="checkbox" name="live_send" value="1" ' . checked($live, true, false) . '><span>' . esc_html__('Enable live sending', 'ai-eshop-optimizer') . '</span></label>';
        echo '<span class="aieo-event-live__state">'
            . ($live ? esc_html__('Live sending is ON — Send delivers real emails.', 'ai-eshop-optimizer') : esc_html__('Live sending is OFF — Send runs a dry run (no emails sent).', 'ai-eshop-optimizer')) . '</span>';
        echo '</form>';
        $live_form = (string) ob_get_clean();

        
        $counts  = AIEO_Event_Invites::scope_counts($event_id);
        
        
        echo '<form id="aieo-event-send-form" method="post" action="' . esc_url(admin_url('admin-post.php')) . '">';
        echo '<input type="hidden" name="action" value="aieo_events_invites_send">';
        echo '<input type="hidden" name="event_id" value="' . esc_attr($event_id) . '">';
        wp_nonce_field('aieo_events_invites');
        echo '<fieldset >';
        echo '<label class="rooster-admin-check is-bare" ><input type="radio" name="scope" value="pending" checked><span>' . esc_html(sprintf(__('Pending — not yet responded (%d)', 'ai-eshop-optimizer'), (int) $counts['pending'])) . '</span></label>';
        echo '<label class="rooster-admin-check is-bare" ><input type="radio" name="scope" value="new"><span>' . esc_html(sprintf(__('New — never invited (%d)', 'ai-eshop-optimizer'), (int) $counts['new'])) . '</span></label>';
        echo '<label class="rooster-admin-check is-bare"><input type="radio" name="scope" value="all"><span>' . esc_html(sprintf(__('All participants (%d)', 'ai-eshop-optimizer'), (int) $counts['all'])) . '</span></label>';
        echo '</fieldset>';
        echo '</form>';
        if ($live) {
            echo \Rooster\Admin\States::confirm('aieo-event-send-dialog', 'apply', __('Send invitations now? Real emails will be delivered.', 'ai-eshop-optimizer'), '', array('confirm' => __('Send invitations', 'ai-eshop-optimizer'))); 
        }

        
        $sample = AIEO_Event_Invites::sample(get_post($event_id));
        echo rooster_admin_card_section_html(__('Preview', 'ai-eshop-optimizer')); 
        echo '<p><strong>' . esc_html__('Subject', 'ai-eshop-optimizer') . ':</strong> ' . esc_html($sample['subject']) . '</p>';
        echo '<iframe title="' . esc_attr__('Invitation preview', 'ai-eshop-optimizer') . '" sandbox="" srcdoc="' . esc_attr($sample['html']) . '" class="aieo-event-preview"></iframe>';
        echo $close; 

        list($open, $close) = AIEO_DMM_UI::card(array(
            'anchor' => 'events-guests-live-sending',
            'icon'   => 'send',
            'title'  => __('Live sending', 'ai-eshop-optimizer'),
            'col'    => 2,
            'footer' => AIEO_Kit::button(__('Save', 'ai-eshop-optimizer'), array('type' => 'submit', 'attrs' => array('form' => 'aieo-event-live-form'))),
        ));
        echo $open . $live_form . $close; 
    }

    
    public function handle_invites_send() {
        if (!current_user_can('edit_posts')) {
            wp_die(esc_html__('You are not allowed to do this.', 'ai-eshop-optimizer'));
        }
        check_admin_referer('aieo_events_invites');

        $event_id = isset($_POST['event_id']) ? (int) $_POST['event_id'] : 0;
        $scope    = (isset($_POST['scope']) && in_array($_POST['scope'], array('all', 'new', 'pending'), true)) ? sanitize_key(wp_unslash($_POST['scope'])) : 'pending';

        if ($event_id <= 0 || !class_exists('AIEO_Event_CPT') || get_post_type($event_id) !== AIEO_Event_CPT::POST_TYPE) {
            self::stash_result(array('error' => __('Invalid event.', 'ai-eshop-optimizer')));
            wp_safe_redirect(self::tab_url());
            exit;
        }
        $redirect = self::tab_url(array('manage' => $event_id));

        if (!class_exists('AIEO_Event_Invites') && defined('AIEO_DIR') && file_exists(AIEO_DIR . 'includes/dmm/events/class-aieo-event-invites.php')) {
            require_once AIEO_DIR . 'includes/dmm/events/class-aieo-event-invites.php';
        }
        if (!class_exists('AIEO_Event_Invites')) {
            self::stash_result(array('error' => __('The invitation sender is unavailable.', 'ai-eshop-optimizer')));
            wp_safe_redirect($redirect);
            exit;
        }

        $settings = self::get_settings();
        $live     = !empty($settings['live_send']);
        $res      = AIEO_Event_Invites::run($event_id, $scope, $live);

        if (isset($res['error']) && $res['error'] === 'no_template') {
            self::stash_result(array('error' => __('Set the invitation subject and body on the event’s edit screen first.', 'ai-eshop-optimizer')));
        } elseif (!$live) {
            self::stash_result(array('notice' => sprintf(
                
                __('Dry run — %1$d recipient(s) in scope “%2$s”. No emails were sent. Enable live sending above to send for real.', 'ai-eshop-optimizer'),
                (int) $res['recipients'], $scope
            )));
        } else {
            self::stash_result(array('notice' => sprintf(
                
                __('Invitations: %1$d sent, %2$d failed, %3$d skipped (of %4$d).', 'ai-eshop-optimizer'),
                (int) $res['sent'], (int) $res['failed'], (int) $res['skipped'], (int) $res['recipients']
            )));
        }
        wp_safe_redirect($redirect);
        exit;
    }

    
    public function handle_invites_settings() {
        if (!current_user_can('edit_posts')) {
            wp_die(esc_html__('You are not allowed to do this.', 'ai-eshop-optimizer'));
        }
        check_admin_referer('aieo_events_invites_settings');
        $event_id = isset($_POST['event_id']) ? (int) $_POST['event_id'] : 0;

        $settings = self::get_settings();
        $settings['live_send'] = !empty($_POST['live_send']);
        update_option(self::SETTINGS_OPTION, $settings, false);

        self::stash_result(array('notice' => $settings['live_send']
            ? __('Live sending enabled.', 'ai-eshop-optimizer')
            : __('Live sending disabled (dry-run only).', 'ai-eshop-optimizer')));
        wp_safe_redirect($event_id > 0 ? self::tab_url(array('manage' => $event_id)) : self::tab_url());
        exit;
    }

    

    
    private static function export_capability() {
        return class_exists('AIEO_Report_Roles')
            ? AIEO_Report_Roles::capability_for('export')
            : 'manage_options';
    }

    
    public function handle_export() {
        if (!current_user_can(self::export_capability())) {
            wp_die(esc_html__('You do not have permission to export this report.', 'ai-eshop-optimizer'));
        }
        check_admin_referer('aieo_events_export');

        $event_id = isset($_GET['event_id']) ? (int) $_GET['event_id'] : 0;
        if ($event_id <= 0 || !class_exists('AIEO_Event_CPT') || get_post_type($event_id) !== AIEO_Event_CPT::POST_TYPE) {
            wp_die(esc_html__('Invalid event.', 'ai-eshop-optimizer'));
        }
        
        if (!class_exists('\Rooster\Admin\Export') && function_exists('rooster_admin_builders')) {
            rooster_admin_builders();
        }
        if (!class_exists('\Rooster\Admin\Export') || !class_exists('AIEO_Event_Participants')) {
            wp_die(esc_html__('Export is unavailable.', 'ai-eshop-optimizer'));
        }

        $rows = AIEO_Event_Participants::get_for_event($event_id, array('orderby' => 'last_name', 'order' => 'ASC'));

        
        $fmt_dt = static function ($gmt) {
            $gmt = (string) $gmt;
            if ($gmt === '' || substr($gmt, 0, 4) === '0000') { return ''; }
            return get_date_from_gmt($gmt, 'Y-m-d H:i');
        };
        $src_labels = array('imported' => __('Imported', 'ai-eshop-optimizer'), 'self-registered' => __('Self-registered', 'ai-eshop-optimizer'));
        $rs_labels  = array('invited' => __('Invited', 'ai-eshop-optimizer'), 'confirmed' => __('Confirmed', 'ai-eshop-optimizer'), 'declined' => __('Declined', 'ai-eshop-optimizer'));

        $columns = array();
        foreach (array(
            'salutation' => __('Salutation', 'ai-eshop-optimizer'), 'title' => __('Title', 'ai-eshop-optimizer'),
            'first_name' => __('First name', 'ai-eshop-optimizer'), 'last_name' => __('Last name', 'ai-eshop-optimizer'),
            'organization' => __('Organization', 'ai-eshop-optimizer'), 'department' => __('Department', 'ai-eshop-optimizer'),
            'email' => __('Email', 'ai-eshop-optimizer'), 'phone' => __('Phone', 'ai-eshop-optimizer'),
            'source' => __('Source', 'ai-eshop-optimizer'), 'rsvp' => __('RSVP status', 'ai-eshop-optimizer'),
            'invited' => __('Invited at', 'ai-eshop-optimizer'), 'responded' => __('Responded at', 'ai-eshop-optimizer'),
            'registered' => __('Registered at', 'ai-eshop-optimizer'),
        ) as $key => $label) {
            $columns[$key] = array('label' => $label, 'type' => 'text'); 
        }
        $lines = static function () use ($rows, $src_labels, $rs_labels, $fmt_dt) {
            foreach ($rows as $r) {
                yield array(
                    'salutation' => (string) $r->salutation, 'title' => (string) $r->title, 'first_name' => (string) $r->first_name,
                    'last_name' => (string) $r->last_name, 'organization' => (string) $r->organization, 'department' => (string) $r->department,
                    'email' => (string) $r->email, 'phone' => (string) $r->phone,
                    'source' => isset($src_labels[$r->source]) ? $src_labels[$r->source] : (string) $r->source,
                    'rsvp' => isset($rs_labels[$r->rsvp_status]) ? $rs_labels[$r->rsvp_status] : (string) $r->rsvp_status,
                    'invited' => $fmt_dt($r->invited_at), 'responded' => $fmt_dt($r->responded_at), 'registered' => $fmt_dt($r->created_at),
                );
            }
        };

        $slug = sanitize_title(get_the_title($event_id));
        \Rooster\Admin\Export::xlsx('participants-' . ($slug !== '' ? $slug : $event_id) . '.xlsx', array(array('name' => __('Participants', 'ai-eshop-optimizer'), 'columns' => $columns, 'rows' => $lines())));
        exit;
    }
}