/**
 * Theme Options Admin JavaScript
 *
 * @package ROI_Theme
 * @since 1.0.0
 */

(function($) {
    'use strict';

    var ROIThemeOptions = {

        /**
         * Initialize
         */
        init: function() {
            this.tabs();
            this.imageUpload();
            this.resetOptions();
            this.exportOptions();
            this.importOptions();
            this.formValidation();
            this.conditionalFields();
        },

        /**
         * Tab Navigation
         */
        tabs: function() {
            // Tab click handler
            $('.roi-tabs-nav a').on('click', function(e) {
                e.preventDefault();

                var tabId = $(this).attr('href');

                // Update active states
                $('.roi-tabs-nav li').removeClass('active');
                $(this).parent().addClass('active');

                // Show/hide tab content
                $('.roi-tab-pane').removeClass('active');
                $(tabId).addClass('active');

                // Update URL hash without scrolling
                if (history.pushState) {
                    history.pushState(null, null, tabId);
                } else {
                    window.location.hash = tabId;
                }
            });

            // Load tab from URL hash on page load
            if (window.location.hash) {
                var hash = window.location.hash;
                if ($(hash).length) {
                    $('.roi-tabs-nav a[href="' + hash + '"]').trigger('click');
                }
            }

            // Handle browser back/forward buttons
            $(window).on('hashchange', function() {
                if (window.location.hash) {
                    $('.roi-tabs-nav a[href="' + window.location.hash + '"]').trigger('click');
                }
            });
        },

        /**
         * Image Upload
         */
        imageUpload: function() {
            var self = this;
            var mediaUploader;

            // Upload button click
            $(document).on('click', '.roi-upload-image', function(e) {
                e.preventDefault();

                var button = $(this);
                var container = button.closest('.roi-image-upload');
                var preview = container.find('.roi-image-preview');
                var input = container.find('.roi-image-id');
                var removeBtn = container.find('.roi-remove-image');

                // If the media uploader already exists, reopen it
                if (mediaUploader) {
                    mediaUploader.open();
                    return;
                }

                // Create new media uploader
                mediaUploader = wp.media({
                    title: roiAdminOptions.strings.selectImage,
                    button: {
                        text: roiAdminOptions.strings.useImage
                    },
                    multiple: false
                });

                // When an image is selected
                mediaUploader.on('select', function() {
                    var attachment = mediaUploader.state().get('selection').first().toJSON();

                    // Set image ID
                    input.val(attachment.id);

                    // Show preview
                    var imgUrl = attachment.sizes && attachment.sizes.medium ?
                                 attachment.sizes.medium.url : attachment.url;
                    preview.html('<img src="' + imgUrl + '" class="roi-preview-image" />');

                    // Show remove button
                    removeBtn.show();
                });

                // Open the uploader
                mediaUploader.open();
            });

            // Remove button click
            $(document).on('click', '.roi-remove-image', function(e) {
                e.preventDefault();

                var button = $(this);
                var container = button.closest('.roi-image-upload');
                var preview = container.find('.roi-image-preview');
                var input = container.find('.roi-image-id');

                // Clear values
                input.val('');
                preview.empty();
                button.hide();
            });
        },

        /**
         * Reset Options
         */
        resetOptions: function() {
            $('#roi-reset-options').on('click', function(e) {
                e.preventDefault();

                if (!confirm(roiAdminOptions.strings.confirmReset)) {
                    return;
                }

                var button = $(this);
                button.prop('disabled', true).addClass('updating-message');

                $.ajax({
                    url: roiAdminOptions.ajaxUrl,
                    type: 'POST',
                    data: {
                        action: 'roi_reset_options',
                        nonce: roiAdminOptions.nonce
                    },
                    success: function(response) {
                        if (response.success) {
                            // Show success message
                            ROIThemeOptions.showNotice('success', response.data.message);

                            // Reload page after 1 second
                            setTimeout(function() {
                                window.location.reload();
                            }, 1000);
                        } else {
                            ROIThemeOptions.showNotice('error', response.data.message);
                            button.prop('disabled', false).removeClass('updating-message');
                        }
                    },
                    error: function() {
                        ROIThemeOptions.showNotice('error', roiAdminOptions.strings.error);
                        button.prop('disabled', false).removeClass('updating-message');
                    }
                });
            });
        },

        /**
         * Export Options
         */
        exportOptions: function() {
            $('#roi-export-options').on('click', function(e) {
                e.preventDefault();

                var button = $(this);
                button.prop('disabled', true).addClass('updating-message');

                $.ajax({
                    url: roiAdminOptions.ajaxUrl,
                    type: 'POST',
                    data: {
                        action: 'roi_export_options',
                        nonce: roiAdminOptions.nonce
                    },
                    success: function(response) {
                        if (response.success) {
                            // Create download link
                            var blob = new Blob([response.data.data], { type: 'application/json' });
                            var url = window.URL.createObjectURL(blob);
                            var a = document.createElement('a');
                            a.href = url;
                            a.download = response.data.filename;
                            document.body.appendChild(a);
                            a.click();
                            window.URL.revokeObjectURL(url);
                            document.body.removeChild(a);

                            ROIThemeOptions.showNotice('success', 'Options exported successfully!');
                        } else {
                            ROIThemeOptions.showNotice('error', response.data.message);
                        }
                        button.prop('disabled', false).removeClass('updating-message');
                    },
                    error: function() {
                        ROIThemeOptions.showNotice('error', roiAdminOptions.strings.error);
                        button.prop('disabled', false).removeClass('updating-message');
                    }
                });
            });
        },

        /**
         * Import Options
         */
        importOptions: function() {
            var modal = $('#roi-import-modal');
            var importData = $('#roi-import-data');

            // Show modal
            $('#roi-import-options').on('click', function(e) {
                e.preventDefault();
                modal.show();
            });

            // Close modal
            $('.roi-modal-close, #roi-import-cancel').on('click', function() {
                modal.hide();
                importData.val('');
            });

            // Close modal on outside click
            $(window).on('click', function(e) {
                if ($(e.target).is(modal)) {
                    modal.hide();
                    importData.val('');
                }
            });

            // Submit import
            $('#roi-import-submit').on('click', function(e) {
                e.preventDefault();

                var data = importData.val().trim();

                if (!data) {
                    alert('Please paste your import data.');
                    return;
                }

                var button = $(this);
                button.prop('disabled', true).addClass('updating-message');

                $.ajax({
                    url: roiAdminOptions.ajaxUrl,
                    type: 'POST',
                    data: {
                        action: 'roi_import_options',
                        nonce: roiAdminOptions.nonce,
                        import_data: data
                    },
                    success: function(response) {
                        if (response.success) {
                            ROIThemeOptions.showNotice('success', response.data.message);
                            modal.hide();
                            importData.val('');

                            // Reload page after 1 second
                            setTimeout(function() {
                                window.location.reload();
                            }, 1000);
                        } else {
                            ROIThemeOptions.showNotice('error', response.data.message);
                            button.prop('disabled', false).removeClass('updating-message');
                        }
                    },
                    error: function() {
                        ROIThemeOptions.showNotice('error', roiAdminOptions.strings.error);
                        button.prop('disabled', false).removeClass('updating-message');
                    }
                });
            });
        },

        /**
         * Form Validation
         */
        formValidation: function() {
            $('.roi-options-form').on('submit', function(e) {
                var valid = true;
                var firstError = null;

                // Validate required fields
                $(this).find('[required]').each(function() {
                    if (!$(this).val()) {
                        valid = false;
                        $(this).addClass('error');

                        if (!firstError) {
                            firstError = $(this);
                        }
                    } else {
                        $(this).removeClass('error');
                    }
                });

                // Validate number fields
                $(this).find('input[type="number"]').each(function() {
                    var val = $(this).val();
                    var min = $(this).attr('min');
                    var max = $(this).attr('max');

                    if (val && min && parseInt(val) < parseInt(min)) {
                        valid = false;
                        $(this).addClass('error');
                        if (!firstError) {
                            firstError = $(this);
                        }
                    }

                    if (val && max && parseInt(val) > parseInt(max)) {
                        valid = false;
                        $(this).addClass('error');
                        if (!firstError) {
                            firstError = $(this);
                        }
                    }
                });

                // Validate URL fields
                $(this).find('input[type="url"]').each(function() {
                    var val = $(this).val();
                    if (val && !ROIThemeOptions.isValidUrl(val)) {
                        valid = false;
                        $(this).addClass('error');
                        if (!firstError) {
                            firstError = $(this);
                        }
                    }
                });

                if (!valid) {
                    e.preventDefault();

                    if (firstError) {
                        // Scroll to first error
                        $('html, body').animate({
                            scrollTop: firstError.offset().top - 100
                        }, 500);
                        firstError.focus();
                    }

                    ROIThemeOptions.showNotice('error', 'Please fix the errors in the form.');
                    return false;
                }

                // Add saving animation
                $(this).find('.submit .button-primary').addClass('updating-message');
            });

            // Remove error class on input
            $('.roi-options-form input, .roi-options-form select, .roi-options-form textarea').on('change input', function() {
                $(this).removeClass('error');
            });
        },

        /**
         * Conditional Fields
         */
        conditionalFields: function() {
            // Enable/disable related posts options based on checkbox
            $('#enable_related_posts').on('change', function() {
                var checked = $(this).is(':checked');
                var fields = $('#related_posts_count, #related_posts_taxonomy, #related_posts_title, #related_posts_columns');

                fields.closest('tr').toggleClass('roi-field-dependency', !checked);
                fields.prop('disabled', !checked);
            }).trigger('change');

            // Enable/disable breadcrumb separator based on breadcrumbs checkbox
            $('#enable_breadcrumbs').on('change', function() {
                var checked = $(this).is(':checked');
                var field = $('#breadcrumb_separator');

                field.closest('tr').toggleClass('roi-field-dependency', !checked);
                field.prop('disabled', !checked);
            }).trigger('change');
        },

        /**
         * Show Notice
         */
        showNotice: function(type, message) {
            var notice = $('<div class="notice notice-' + type + ' is-dismissible"><p>' + message + '</p></div>');

            $('.roi-theme-options h1').after(notice);

            // Auto-dismiss after 5 seconds
            setTimeout(function() {
                notice.fadeOut(function() {
                    $(this).remove();
                });
            }, 5000);

            // Scroll to top
            $('html, body').animate({ scrollTop: 0 }, 300);
        },

        /**
         * Validate URL
         */
        isValidUrl: function(url) {
            try {
                new URL(url);
                return true;
            } catch (e) {
                return false;
            }
        }
    };

    // Initialize on document ready
    $(document).ready(function() {
        ROIThemeOptions.init();
    });

    // Make it globally accessible
    window.ROIThemeOptions = ROIThemeOptions;

})(jQuery);