/**
 * Hi-School Slide Manager - Admin Sortable functionality
 * 
 * Handles drag-and-drop ordering of slides in the admin list table
 */

jQuery(document).ready(function($) {
    'use strict';
    
    // Only initialize on the slides list page
    if (typeof hssmAjax === 'undefined' || !$('.wp-list-table tbody').length) {
        return;
    }
    
    // Initialize sortable functionality
    initializeSortable();
    
    /**
     * Initialize jQuery UI sortable on the slides table
     */
    function initializeSortable() {
        const $tbody = $('.wp-list-table tbody');
        
        // Make the table body sortable
        $tbody.sortable({
            handle: '.hssm-drag-handle',
            placeholder: 'ui-sortable-placeholder',
            helper: function(e, tr) {
                var $helper = tr.clone();
                $helper.children().each(function(index) {
                    $(this).width(tr.children().eq(index).width());
                });
                return $helper;
            },
            start: function(e, ui) {
                ui.placeholder.height(ui.item.height());
                ui.item.addClass('ui-sortable-helper');
            },
            stop: function(e, ui) {
                ui.item.removeClass('ui-sortable-helper');
                updateSlideOrder();
            },
            tolerance: 'pointer',
            cursor: 'move',
            opacity: 0.8,
            distance: 5
        });
        
        // Add visual feedback
        $tbody.on('mouseenter', '.hssm-drag-handle', function() {
            $(this).closest('tr').addClass('hssm-sortable-hover');
        });
        
        $tbody.on('mouseleave', '.hssm-drag-handle', function() {
            $(this).closest('tr').removeClass('hssm-sortable-hover');
        });
        
        // Add CSS for hover effect
        if (!$('#hssm-sortable-styles').length) {
            $('<style id="hssm-sortable-styles">')
                .text(`
                    .wp-list-table tbody tr.hssm-sortable-hover {
                        background-color: #f0f8ff;
                    }
                    .wp-list-table .hssm-drag-handle {
                        opacity: 0.6;
                        transition: opacity 0.2s ease;
                    }
                    .wp-list-table .hssm-drag-handle:hover {
                        opacity: 1;
                    }
                    .wp-list-table tbody tr.ui-sortable-helper td {
                        background-color: #f9f9f9;
                        border-color: #0073aa;
                    }
                `)
                .appendTo('head');
        }
    }
    
    /**
     * Update slide order via AJAX
     */
    function updateSlideOrder() {
        const slideIds = [];
        
        // Collect all slide IDs in their new order
        $('.wp-list-table tbody tr').each(function() {
            const postId = $(this).attr('id');
            if (postId && postId.startsWith('post-')) {
                const slideId = parseInt(postId.replace('post-', ''));
                if (slideId) {
                    slideIds.push(slideId);
                }
            }
        });
        
        if (slideIds.length === 0) {
            return;
        }
        
        // Show loading indicator
        showLoadingIndicator();
        
        // Send AJAX request to update order
        $.ajax({
            url: hssmAjax.ajaxurl,
            type: 'POST',
            data: {
                action: 'hssm_update_slide_order',
                nonce: hssmAjax.nonce,
                slide_ids: slideIds
            },
            success: function(response) {
                hideLoadingIndicator();
                
                if (response.success) {
                    showNotification('Slide order updated successfully!', 'success');
                    
                    // Update the order column values
                    updateOrderColumnValues(slideIds);
                } else {
                    showNotification('Failed to update slide order: ' + (response.data?.message || 'Unknown error'), 'error');
                }
            },
            error: function(xhr, status, error) {
                hideLoadingIndicator();
                showNotification('Error updating slide order: ' + error, 'error');
            }
        });
    }
    
    /**
     * Update the order column values in the table
     */
    function updateOrderColumnValues(slideIds) {
        slideIds.forEach(function(slideId, index) {
            const $row = $('#post-' + slideId);
            const $orderCell = $row.find('.column-order');
            if ($orderCell.length) {
                $orderCell.text(index);
            }
        });
    }
    
    /**
     * Show loading indicator
     */
    function showLoadingIndicator() {
        if ($('#hssm-loading-indicator').length === 0) {
            $('<div id="hssm-loading-indicator" style="position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: rgba(0,0,0,0.8); color: white; padding: 20px; border-radius: 5px; z-index: 9999; font-size: 16px;">')
                .html('<span class="dashicons dashicons-update" style="animation: rotation 1s infinite linear; margin-right: 10px;"></span> Updating slide order...')
                .appendTo('body');
        }
    }
    
    /**
     * Hide loading indicator
     */
    function hideLoadingIndicator() {
        $('#hssm-loading-indicator').remove();
    }
    
    /**
     * Show notification message
     */
    function showNotification(message, type) {
        const $notice = $('<div class="notice notice-' + type + ' is-dismissible hssm-notice">')
            .html('<p>' + message + '</p>')
            .hide();
        
        // Insert after the page title
        $('.wrap h1').first().after($notice);
        
        // Animate in
        $notice.slideDown(300);
        
        // Add dismiss functionality
        $notice.on('click', '.notice-dismiss', function() {
            $notice.slideUp(300, function() {
                $(this).remove();
            });
        });
        
        // Auto-dismiss success messages after 3 seconds
        if (type === 'success') {
            setTimeout(function() {
                $notice.find('.notice-dismiss').click();
            }, 3000);
        }
    }
    
    // Add rotation animation for loading spinner
    if (!$('#hssm-animation-styles').length) {
        $('<style id="hssm-animation-styles">')
            .text(`
                @keyframes rotation {
                    from { transform: rotate(0deg); }
                    to { transform: rotate(359deg); }
                }
                .hssm-notice {
                    margin: 10px 0;
                }
            `)
            .appendTo('head');
    }
});