<?php
if (!defined('ABSPATH')) {
    exit;
}

class EnspirePlugins_ACFW_Assets {
    
    public function __construct() {
        if ($this->is_using_block_checkout()) {
			// checkout block version
            add_action('wp_enqueue_scripts', array($this, 'enqueue_frontend_block_assets'));
            add_action('enqueue_block_editor_assets', array($this, 'enqueue_editor_assets'));
            add_action('enqueue_block_assets', array($this, 'enqueue_block_assets'));
        } else {
			// checkout classic version
			// add_action('wp_enqueue_scripts', array($this, 'enqueue_frontend_assets'));
		}

		add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_assets'));
    }

    private function is_using_block_checkout() {
        // Check if WooCommerce blocks are active
        if (!class_exists('Automattic\WooCommerce\Blocks\Utils\CartCheckoutUtils')) {
            return false;
        }

        // Check if the checkout page uses blocks
        $checkout_page_id = wc_get_page_id('checkout');
        if (!$checkout_page_id) {
            return false;
        }

        // Check if the checkout page contains the checkout block
        $checkout_page = get_post($checkout_page_id);
        if (!$checkout_page) {
            return false;
        }

        // Check if the page content contains the checkout block
        return has_block('woocommerce/checkout', $checkout_page_id);
    }

	public function enqueue_block_assets() {
        wp_enqueue_style(
            'enspireplugins-acfw-checkout-block-style',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/css/checkout-fields-block.css',
            array(),
            ENSPIREPLUGINS_ACFW_VERSION
        );
    }

	public function enqueue_frontend_block_assets() {
        if (!is_checkout() && !wp_doing_ajax()) {
            return;
        }
        
        wp_enqueue_style(
            'enspireplugins-acfw-checkout-block-style',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/css/checkout-fields-block.css',
            array('wc-blocks-style'),
            ENSPIREPLUGINS_ACFW_VERSION
        );
        
        wp_enqueue_script(
            'enspireplugins-acfw-checkout-block-frontend',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/js/checkout-fields-block-frontend.js',
            array('wp-element', 'wp-components', 'wc-blocks-checkout'),
            ENSPIREPLUGINS_ACFW_VERSION,
            true
        );
        
        wp_localize_script('enspireplugins-acfw-checkout-block-frontend', 'enspireACFWFrontend', array(
            'fields' => $this->get_active_fields_for_editor(),
            'nonce' => wp_create_nonce('enspireplugins_acfw_checkout'),
            'ajaxUrl' => admin_url('admin-ajax.php'),
        ));
    }

	public function enqueue_editor_assets() {
        wp_enqueue_script(
            'enspireplugins-acfw-checkout-block-editor',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/js/checkout-fields-block-editor.js',
            array(
                'wp-blocks',
                'wp-components',
                'wp-element',
                'wp-editor',
                'wp-block-editor',
                'wp-compose',
                'wp-data',
                'wc-blocks-checkout'
            ),
            ENSPIREPLUGINS_ACFW_VERSION,
            true
        );
        
        wp_localize_script('enspireplugins-acfw-checkout-block-editor', 'enspireACFWBlock', array(
            'title' => __('Additional Checkout Fields', 'additional-checkout-fields-for-woo'),
            'description' => __('Display custom checkout fields configured in the plugin settings.', 'additional-checkout-fields-for-woo'),
            'fields' => $this->get_active_fields_for_editor(),
            'fieldsCount' => count($this->get_active_fields()),
            'labels' => array(
                'fieldsSettings' => __('Fields Settings', 'additional-checkout-fields-for-woo'),
                'enableFields' => __('Enable Fields Display', 'additional-checkout-fields-for-woo'),
                'showLabels' => __('Show Field Labels', 'additional-checkout-fields-for-woo'),
                'fieldsLayout' => __('Fields Layout', 'additional-checkout-fields-for-woo'),
                'layoutDefault' => __('Default', 'additional-checkout-fields-for-woo'),
                'layoutCompact' => __('Compact', 'additional-checkout-fields-for-woo'),
                'layoutWide' => __('Wide', 'additional-checkout-fields-for-woo'),
                'noFields' => __('No active fields found. Configure fields in plugin settings first.', 'additional-checkout-fields-for-woo'),
				// translators: %d is the number of active fields
                'fieldsFound' => __('%d active fields configured in plugin settings.', 'additional-checkout-fields-for-woo'),
				// translators: %d is the number of custom checkout fields
                'blockDescription' => __('This block will display %d custom checkout fields on the frontend.', 'additional-checkout-fields-for-woo'),
                'configureFirst' => __('Configure custom fields in plugin settings to see them here.', 'additional-checkout-fields-for-woo'),
                'fieldsDisabled' => __('Fields display is disabled.', 'additional-checkout-fields-for-woo'),
                'noFieldsConfigured' => __('No custom fields configured. Please add fields in the plugin settings.', 'additional-checkout-fields-for-woo'),
				// translators: %s is the field type (e.g., text, email, select)
                'fieldType' => __('(%s field)', 'additional-checkout-fields-for-woo'),
                'enableFieldsHelp' => __('Toggle to show/hide all custom fields.', 'additional-checkout-fields-for-woo'),
                'showLabelsHelp' => __('Display labels above each field.', 'additional-checkout-fields-for-woo'),
                'layoutHelp' => __('Choose how fields should be displayed.', 'additional-checkout-fields-for-woo'),
            ),
        ));
    }
    
    public function enqueue_frontend_assets() {
        if (is_checkout()) {
            wp_enqueue_style(
                'enspireplugins_acfw-frontend-styles', 
                ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/css/frontend.css', 
                array(), 
                ENSPIREPLUGINS_ACFW_VERSION
            );
            
            $custom_css = "/* CSS */";
            wp_add_inline_style('enspireplugins_acfw-frontend-styles', $custom_css);
        }
    }
    
    public function enqueue_admin_assets($hook) {
        if ('toplevel_page_woo-checkout-fields' === $hook) {
            $this->enqueue_settings_page_assets();
        }
        
        if ($this->is_order_page()) {
            $this->enqueue_order_page_assets();
        }
    }
    
    private function enqueue_settings_page_assets() {
        wp_enqueue_script('jquery-ui-sortable');
        wp_enqueue_script('jquery-ui-tabs');
        
        wp_register_script(
            'sweetalert2',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/libs/sweetalert2/sweetalert2.min.js',
            array(),
            '11.22.2',
            true
        );
        wp_script_add_data('sweetalert2', 'defer', true);
        wp_enqueue_script('sweetalert2');
        
        wp_enqueue_style(
            'sweetalert2',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/libs/sweetalert2/sweetalert2.min.css',
            array(),
            '11.22.2'
        );
        
        wp_enqueue_style(
            'enspireplugins_acfw-admin-styles', 
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/css/admin.css', 
            array('sweetalert2'), 
            ENSPIREPLUGINS_ACFW_VERSION
        );
        
        wp_register_script(
            'enspireplugins_acfw-admin-scripts', 
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/js/admin.js', 
            array('jquery', 'jquery-ui-sortable', 'sweetalert2'), 
            ENSPIREPLUGINS_ACFW_VERSION, 
            true
        );
        wp_script_add_data('enspireplugins_acfw-admin-scripts', 'defer', true);
        wp_enqueue_script('enspireplugins_acfw-admin-scripts');
        
        wp_localize_script('enspireplugins_acfw-admin-scripts', 'enspireplugins_acfw_admin', array(
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('enspireplugins_acfw_admin_nonce'),
            'orderNonce' => wp_create_nonce('edit-order'),
            'strings' => array(
                'confirmDelete' => esc_html__('Are you sure?', 'additional-checkout-fields-for-woo'),
                'confirmDeleteText' => esc_html__('Do you want to delete this field? This action cannot be undone.', 'additional-checkout-fields-for-woo'),
                'fieldDeleted' => esc_html__('Deleted!', 'additional-checkout-fields-for-woo'),
                'fieldDeletedText' => esc_html__('The field has been deleted.', 'additional-checkout-fields-for-woo'),
                'fieldAdded' => esc_html__('Success!', 'additional-checkout-fields-for-woo'),
                'fieldAddedText' => esc_html__('Field added successfully!', 'additional-checkout-fields-for-woo'),
                'fieldUpdated' => esc_html__('Success!', 'additional-checkout-fields-for-woo'),
                'fieldUpdatedText' => esc_html__('Field updated successfully!', 'additional-checkout-fields-for-woo'),
                'addNewField' => esc_html__('Add New Field', 'additional-checkout-fields-for-woo'),
                'editField' => esc_html__('Edit Field', 'additional-checkout-fields-for-woo'),
                'addField' => esc_html__('Add Field', 'additional-checkout-fields-for-woo'),
                'updateField' => esc_html__('Update Field', 'additional-checkout-fields-for-woo'),
                'cancel' => esc_html__('Cancel', 'additional-checkout-fields-for-woo'),
                'yesDelete' => esc_html__('Yes, delete it!', 'additional-checkout-fields-for-woo'),
                'saving' => esc_html__('Saving...', 'additional-checkout-fields-for-woo'),
                'savingText' => esc_html__('Please wait while we save your changes.', 'additional-checkout-fields-for-woo')
            )
        ));

        $fields_data = get_option('enspireplugins_acfw_settings', array('custom_fields' => array()));
        $custom_fields = isset($fields_data['custom_fields']) ? $fields_data['custom_fields'] : array();
        
        $type_labels = array(
            'text' => esc_html__('Text', 'additional-checkout-fields-for-woo'),
            'number' => esc_html__('Number', 'additional-checkout-fields-for-woo'),
            'email' => esc_html__('Email', 'additional-checkout-fields-for-woo'),
            'url' => esc_html__('URL', 'additional-checkout-fields-for-woo'),
            'select' => esc_html__('Select', 'additional-checkout-fields-for-woo'),
            'checkbox' => esc_html__('Checkbox', 'additional-checkout-fields-for-woo'),
            'radio' => esc_html__('Radio', 'additional-checkout-fields-for-woo'),
            'textarea' => esc_html__('Textarea', 'additional-checkout-fields-for-woo'),
            'heading' => esc_html__('Heading', 'additional-checkout-fields-for-woo')
        );

        wp_add_inline_script(
            'enspireplugins_acfw-admin-scripts',
            sprintf(
                'var enspireplugins_acfw_fields_data = %s; var enspireplugins_acfw_type_labels = %s;',
                wp_json_encode($custom_fields),
                wp_json_encode($type_labels)
            ),
            'before'
        );
    }
    
    private function enqueue_order_page_assets() {
        wp_enqueue_style(
            'enspireplugins_acfw-order-display-styles',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/css/order-display.css',
            array(),
            ENSPIREPLUGINS_ACFW_VERSION
        );
        
        wp_register_script(
            'enspireplugins_acfw-order-display-scripts',
            ENSPIREPLUGINS_ACFW_PLUGIN_URL . 'assets/js/order-display.js',
            array('jquery'),
            ENSPIREPLUGINS_ACFW_VERSION,
            true
        );
        wp_script_add_data('enspireplugins_acfw-order-display-scripts', 'defer', true);
        wp_enqueue_script('enspireplugins_acfw-order-display-scripts');
    }
    
    private function is_order_page() {
        if (!current_user_can('edit_shop_orders') && !current_user_can('manage_woocommerce')) {
            return false;
        }

        global $post_type, $pagenow, $typenow;
        
        // Check for classic order pages
        if ($post_type === 'shop_order' || $typenow === 'shop_order') {
            return true;
        }
        
        // Check for HPOS (High-Performance Order Storage) pages
        if ($pagenow === 'admin.php') {
            $screen = get_current_screen();
            if ($screen && strpos($screen->id, 'wc-orders') !== false) {
                return true;
            }
            
            // Check page parameter for orders list - using WordPress's built-in sanitization
			// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only check for page identification
            $page = isset($_GET['page']) ? sanitize_text_field(wp_unslash($_GET['page'])) : '';
            if ($page === 'wc-orders') {
                return true;
            }
        }
        
        // Check for post.php (classic order edit page)
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only check for page identification
        if ($pagenow === 'post.php' && isset($_GET['post'])) {
			// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only check for page identification
            $post_id = absint(wp_unslash($_GET['post']));
            if ($post_id) {
                $post = get_post($post_id);
                if ($post && $post->post_type === 'shop_order') {
                    return true;
                }
            }
        }
        
        return false;
    }

    /**
     * Get active fields from saved settings.
     */
    private function get_active_fields() {
        $settings = get_option('enspireplugins_acfw_settings', array());
        $custom_fields = isset($settings['custom_fields']) ? $settings['custom_fields'] : array();

        return array_values(array_filter($custom_fields, function($field) {
            return isset($field['active']) && $field['active'] === 'yes';
        }));
    }

    /**
     * Shape active fields data for editor/frontend scripts.
     */
    private function get_active_fields_for_editor() {
        $active_fields = $this->get_active_fields();
        $editor_fields = array();

        foreach ($active_fields as $field) {
            $editor_fields[] = array(
                'id' => isset($field['id']) ? $field['id'] : '',
                'label' => isset($field['label']) ? $field['label'] : '',
                'type' => isset($field['type']) ? $field['type'] : 'text',
                'required' => isset($field['required']) && $field['required'] === 'yes',
                'placeholder' => isset($field['placeholder']) ? $field['placeholder'] : '',
                'options' => isset($field['options']) ? $field['options'] : array(),
            );
        }

        return $editor_fields;
    }
}