<?php
/**
 * Admin View Class - Handles admin interface rendering
 *
 * @package StudiouWCCustomReports
 */

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

class StudiouWC_Admin_View {
    
    private $db_manager;
    private $settings_manager;
    
    public function __construct($db_manager, $settings_manager) {
        $this->db_manager = $db_manager;
        $this->settings_manager = $settings_manager;
    }
    
    public function add_admin_menu() {
        // Add Custom Reports page under WooCommerce > Reports
        add_submenu_page(
            'woocommerce',
            __('Custom Reports', StudiouWC_Main::get_text_domain()),
            __('Custom Reports', StudiouWC_Main::get_text_domain()),
            'manage_woocommerce',
            'studiou-custom-reports',
            array($this, 'display_custom_reports_page')
        );
        
        // Add Settings page under WooCommerce > Reports Settings
        add_submenu_page(
            'woocommerce',
            __('Custom Report Settings', StudiouWC_Main::get_text_domain()),
            __('Custom Report Settings', StudiouWC_Main::get_text_domain()),
            'manage_woocommerce',
            'studiou-reports-settings',
            array($this, 'display_settings_page')
        );
    }
    
    public function enqueue_admin_scripts($hook) {
        if (strpos($hook, 'studiou-') !== false) {
            wp_enqueue_script('jquery');
            wp_enqueue_script('jquery-ui-datepicker');
            wp_enqueue_style('jquery-ui-datepicker', 'https://code.jquery.com/ui/1.12.1/themes/ui-lightness/jquery-ui.css');
        }
    }
    
    public function display_custom_reports_page() {
        $settings = $this->settings_manager->get_settings();
        
        // Handle form submission
        $view = isset($_GET['view']) ? sanitize_text_field($_GET['view']) : 'product_categories_summary';
        $date_from = isset($_GET['date_from']) ? sanitize_text_field($_GET['date_from']) : $this->settings_manager->get_default_date_from();
        $date_to = isset($_GET['date_to']) ? sanitize_text_field($_GET['date_to']) : date('Y-m-d');
        
        // If no statuses selected, use all available statuses (including custom ones)
        if (isset($_GET['statuses']) && !empty($_GET['statuses'])) {
            $statuses = array_map('sanitize_text_field', $_GET['statuses']);
        } else {
            $default_statuses = $settings['default_statuses'] ?? array();
            if (empty($default_statuses)) {
                // Include common statuses + your custom status
                $statuses = array('wc-completed', 'wc-processing', 'wc-on-hold', 'wc-to-print');
            } else {
                $statuses = $default_statuses;
            }
        }
        
        $per_page = isset($_GET['per_page']) ? intval($_GET['per_page']) : 20;
        $paged = isset($_GET['paged']) ? intval($_GET['paged']) : 1;
        $default_orderby = ($view === 'order_customers_list') ? 'customer_name' : 'category';
        $orderby = isset($_GET['orderby']) ? sanitize_text_field($_GET['orderby']) : $default_orderby;
        $order = isset($_GET['order']) ? sanitize_text_field($_GET['order']) : 'ASC';

        // Get report data based on view
        if ($view === 'order_customers_list') {
            $report_data = $this->db_manager->get_order_customers_list($date_from, $date_to, $statuses, $per_page, $paged, $orderby, $order);
            $total_items = $this->db_manager->get_order_customers_total_items($date_from, $date_to, $statuses);
        } else {
            $report_data = $this->db_manager->get_product_categories_summary($date_from, $date_to, $statuses, $per_page, $paged, $orderby, $order);
            $total_items = $this->db_manager->get_total_items($date_from, $date_to, $statuses);
        }
        $total_pages = ceil($total_items / $per_page);
        
        $this->render_reports_page($view, $date_from, $date_to, $statuses, $per_page, $paged, $orderby, $order, $report_data, $total_items, $total_pages, $settings);
    }
    
    public function display_settings_page() {
        $settings = $this->settings_manager->get_settings();
        $this->render_settings_page($settings);
    }
    
    private function render_reports_page($view, $date_from, $date_to, $statuses, $per_page, $paged, $orderby, $order, $report_data, $total_items, $total_pages, $settings) {
        ?>
        <div class="wrap">
            <h1><?php _e('Custom Reports', StudiouWC_Main::get_text_domain()); ?></h1>
            
            <?php $this->render_filter_form($view, $date_from, $date_to, $statuses, $per_page); ?>
            
            <?php if (!empty($report_data)): ?>
                <?php $this->render_pagination_top($total_items, $total_pages, $paged); ?>
                <?php if ($view === 'order_customers_list'): ?>
                    <?php $this->render_customers_data_table($report_data, $orderby, $order); ?>
                <?php else: ?>
                    <?php $this->render_data_table($report_data, $orderby, $order, $settings); ?>
                <?php endif; ?>
            <?php else: ?>
                <p><?php _e('No data found for the selected criteria.', StudiouWC_Main::get_text_domain()); ?></p>
            <?php endif; ?>
        </div>
        
        <?php $this->render_reports_javascript(); ?>
        <?php
    }
    
    private function render_filter_form($view, $date_from, $date_to, $statuses, $per_page) {
        ?>
        <form method="get" id="studiou-reports-form">
            <input type="hidden" name="page" value="studiou-custom-reports">
            
            <table class="form-table">
                <tr>
                    <th><label for="view"><?php _e('View', StudiouWC_Main::get_text_domain()); ?></label></th>
                    <td>
                        <select name="view" id="view">
                            <option value="product_categories_summary" <?php selected($view, 'product_categories_summary'); ?>>
                                <?php _e('Product Categories and Variants Summary', StudiouWC_Main::get_text_domain()); ?>
                            </option>
                            <option value="order_customers_list" <?php selected($view, 'order_customers_list'); ?>>
                                <?php _e('Order Customers List', StudiouWC_Main::get_text_domain()); ?>
                            </option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <th><label for="date_from"><?php _e('Date From', StudiouWC_Main::get_text_domain()); ?></label></th>
                    <td><input type="date" name="date_from" id="date_from" value="<?php echo esc_attr($date_from); ?>"></td>
                </tr>
                <tr>
                    <th><label for="date_to"><?php _e('Date To', StudiouWC_Main::get_text_domain()); ?></label></th>
                    <td><input type="date" name="date_to" id="date_to" value="<?php echo esc_attr($date_to); ?>"></td>
                </tr>
                <tr>
                    <th><label for="statuses"><?php _e('Included Statuses', StudiouWC_Main::get_text_domain()); ?></label></th>
                    <td>
                        <?php $this->render_status_checkboxes($statuses); ?>
                    </td>
                </tr>
                <tr>
                    <th><label for="per_page"><?php _e('Items per page', StudiouWC_Main::get_text_domain()); ?></label></th>
                    <td>
                        <select name="per_page" id="per_page">
                            <option value="10" <?php selected($per_page, 10); ?>>10</option>
                            <option value="20" <?php selected($per_page, 20); ?>>20</option>
                            <option value="50" <?php selected($per_page, 50); ?>>50</option>
                            <option value="100" <?php selected($per_page, 100); ?>>100</option>
                        </select>
                    </td>
                </tr>
            </table>
            
            <p class="submit">
                <input type="submit" name="filter" class="button-primary" value="<?php esc_attr_e('Filter', StudiouWC_Main::get_text_domain()); ?>">
                <button type="button" id="export-csv" class="button"><?php _e('Export', StudiouWC_Main::get_text_domain()); ?></button>
            </p>
        </form>
        <?php
    }
    
    private function render_status_checkboxes($selected_statuses) {
        $order_statuses = wc_get_order_statuses();
        
        // Add custom statuses that might not be in the standard list
        global $wpdb;
        $custom_statuses = $wpdb->get_col("
            SELECT DISTINCT status 
            FROM {$wpdb->prefix}wc_orders 
            WHERE status NOT IN ('" . implode("','", array_keys($order_statuses)) . "')
            AND date_created_gmt >= DATE_SUB(NOW(), INTERVAL 90 DAY)
        ");
        
        foreach ($custom_statuses as $custom_status) {
            if (!isset($order_statuses[$custom_status])) {
                $order_statuses[$custom_status] = ucwords(str_replace(array('wc-', '-'), array('', ' '), $custom_status));
            }
        }
        
        foreach ($order_statuses as $status_key => $status_label) {
            $checked = in_array($status_key, $selected_statuses) ? 'checked' : '';
            echo '<label><input type="checkbox" name="statuses[]" value="' . esc_attr($status_key) . '" ' . $checked . '> ' . esc_html($status_label) . '</label><br>';
        }
    }
    
    private function render_pagination_top($total_items, $total_pages, $paged) {
        ?>
        <div class="tablenav top">
            <div class="tablenav-pages">
                <span class="displaying-num"><?php 
                    /* translators: %d: number of items */
                    printf(_n('%d item', '%d items', $total_items, StudiouWC_Main::get_text_domain()), $total_items); 
                ?></span>
                <?php if ($total_pages > 1): ?>
                <span class="pagination-links">
                    <?php if ($paged > 1): ?>
                    <a class="prev-page button" href="<?php echo esc_url(add_query_arg('paged', $paged - 1)); ?>" title="<?php esc_attr_e('Previous', StudiouWC_Main::get_text_domain()); ?>"><?php _e('‹', StudiouWC_Main::get_text_domain()); ?></a>
                    <?php endif; ?>
                    <span class="paging-input">
                        <span class="tablenav-paging-text"><?php 
                            /* translators: 1: current page number, 2: total number of pages */
                            printf(__('%1$d of %2$d', StudiouWC_Main::get_text_domain()), $paged, $total_pages); 
                        ?></span>
                    </span>
                    <?php if ($paged < $total_pages): ?>
                    <a class="next-page button" href="<?php echo esc_url(add_query_arg('paged', $paged + 1)); ?>" title="<?php esc_attr_e('Next', StudiouWC_Main::get_text_domain()); ?>"><?php _e('›', StudiouWC_Main::get_text_domain()); ?></a>
                    <?php endif; ?>
                </span>
                <?php endif; ?>
            </div>
        </div>
        <?php
    }
    
    private function render_data_table($report_data, $orderby, $order, $settings) {
        $default_property = $settings['default_property'] ?? '';
        $property_values = array();
        
        if (!empty($default_property)) {
            $property_values = $this->db_manager->get_property_values($default_property);
        }
        
        ?>
        <table class="wp-list-table widefat fixed striped">
            <thead>
                <tr>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'category', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Product Category', StudiouWC_Main::get_text_domain()); ?></a></th>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'orders_count', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Orders Count', StudiouWC_Main::get_text_domain()); ?></a></th>
                    <?php foreach ($property_values as $slug => $name): ?>
                        <th><?php 
                            /* translators: %s: property name */
                            printf(__('%s Count', StudiouWC_Main::get_text_domain()), esc_html($name)); 
                        ?></th>
                    <?php endforeach; ?>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'total_price', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Total Price', StudiouWC_Main::get_text_domain()); ?></a></th>
                </tr>
            </thead>
            <tbody>
                <?php foreach ($report_data as $row): ?>
                <tr>
                    <td><?php echo esc_html($row['category']); ?></td>
                    <td><?php echo esc_html($row['orders_count']); ?></td>
                    <?php foreach ($property_values as $slug => $name): ?>
                    <td><?php echo esc_html($row['property_counts'][$slug] ?? 0); ?></td>
                    <?php endforeach; ?>
                    <td><?php echo wc_price($row['total_price']); ?></td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>
        <?php
    }
    
    private function render_customers_data_table($report_data, $orderby, $order) {
        ?>
        <table class="wp-list-table widefat fixed striped">
            <thead>
                <tr>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'customer_name', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Customer Name', StudiouWC_Main::get_text_domain()); ?></a></th>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'customer_email', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Email', StudiouWC_Main::get_text_domain()); ?></a></th>
                    <th><?php _e('Phone', StudiouWC_Main::get_text_domain()); ?></th>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'orders_count', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Orders Count', StudiouWC_Main::get_text_domain()); ?></a></th>
                    <th><a href="<?php echo esc_url(add_query_arg(array('orderby' => 'total_price', 'order' => $order === 'ASC' ? 'DESC' : 'ASC'))); ?>"><?php _e('Total Orders Price', StudiouWC_Main::get_text_domain()); ?></a></th>
                </tr>
            </thead>
            <tbody>
                <?php foreach ($report_data as $row): ?>
                <tr>
                    <td><?php echo esc_html($row['customer_name']); ?></td>
                    <td><?php echo esc_html($row['customer_email']); ?></td>
                    <td><?php echo esc_html($row['customer_phone']); ?></td>
                    <td><?php echo esc_html($row['orders_count']); ?></td>
                    <td><?php echo wc_price($row['total_price']); ?></td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>
        <?php
    }

    private function render_reports_javascript() {
        ?>
        <script>
        jQuery(document).ready(function($) {
            $('#export-csv').click(function() {
                var formData = $('#studiou-reports-form').serialize();
                formData += '&action=studiou_export_csv&export=1';
                
                var form = $('<form method="post" action="' + ajaxurl + '"></form>');
                $.each(formData.split('&'), function(i, field) {
                    var parts = field.split('=');
                    if (parts.length === 2) {
                        form.append('<input type="hidden" name="' + decodeURIComponent(parts[0]) + '" value="' + decodeURIComponent(parts[1]) + '">');
                    }
                });
                $('body').append(form);
                form.submit();
                form.remove();
            });
        });
        </script>
        <?php
    }
    
    private function render_settings_page($settings) {
        ?>
        <div class="wrap">
            <h1><?php _e('Custom Report Settings', StudiouWC_Main::get_text_domain()); ?></h1>
            
            <form method="post" id="studiou-settings-form">
                <?php wp_nonce_field('studiou_save_settings', 'studiou_settings_nonce'); ?>
                <table class="form-table">
                    <tr>
                        <th><label for="default_interval"><?php _e('Default shown interval', StudiouWC_Main::get_text_domain()); ?></label></th>
                        <td>
                            <select name="default_interval" id="default_interval">
                                <option value="last_day" <?php selected($settings['default_interval'] ?? '', 'last_day'); ?>><?php _e('Last day', StudiouWC_Main::get_text_domain()); ?></option>
                                <option value="last_week" <?php selected($settings['default_interval'] ?? '', 'last_week'); ?>><?php _e('Last week', StudiouWC_Main::get_text_domain()); ?></option>
                                <option value="last_month" <?php selected($settings['default_interval'] ?? '', 'last_month'); ?>><?php _e('Last month', StudiouWC_Main::get_text_domain()); ?></option>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <th><label for="default_property"><?php _e('Default property', StudiouWC_Main::get_text_domain()); ?></label></th>
                        <td>
                            <select name="default_property" id="default_property">
                                <option value=""><?php _e('Select property', StudiouWC_Main::get_text_domain()); ?></option>
                                <?php
                                $properties = $this->db_manager->get_product_properties();
                                foreach ($properties as $slug => $name) {
                                    $selected = selected($settings['default_property'] ?? '', $slug, false);
                                    echo '<option value="' . esc_attr($slug) . '" ' . $selected . '>' . esc_html($name) . '</option>';
                                }
                                ?>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <th><label for="default_statuses"><?php _e('Default Included statuses', StudiouWC_Main::get_text_domain()); ?></label></th>
                        <td>
                            <?php
                            $order_statuses = wc_get_order_statuses();
                            $default_statuses = $settings['default_statuses'] ?? array();
                            foreach ($order_statuses as $status_key => $status_label) {
                                $checked = in_array($status_key, $default_statuses) ? 'checked' : '';
                                echo '<label><input type="checkbox" name="default_statuses[]" value="' . esc_attr($status_key) . '" ' . $checked . '> ' . esc_html($status_label) . '</label><br>';
                            }
                            ?>
                        </td>
                    </tr>
                </table>
                
                <p class="submit">
                    <button type="button" id="save-settings" class="button-primary"><?php _e('Save Settings', StudiouWC_Main::get_text_domain()); ?></button>
                </p>
            </form>
        </div>
        
        <script>
        jQuery(document).ready(function($) {
            $('#save-settings').click(function() {
                var formData = $('#studiou-settings-form').serialize();
                formData += '&action=studiou_save_settings';
                
                $.post(ajaxurl, formData, function(response) {
                    if (response.success) {
                        alert('<?php echo esc_js(__('Settings saved successfully!', StudiouWC_Main::get_text_domain())); ?>');
                    } else {
                        alert('<?php echo esc_js(__('Error saving settings.', StudiouWC_Main::get_text_domain())); ?>');
                    }
                }).fail(function() {
                    alert('<?php echo esc_js(__('Connection error. Please try again.', StudiouWC_Main::get_text_domain())); ?>');
                });
            });
        });
        </script>
        <?php
    }
}