/**
 * Enqueue Google Places Autocomplete on checkout page
 * Enhanced version with better error handling and UI
 */
function dbdc_enqueue_autocomplete() {
    if (is_checkout() && dbdc_is_woocommerce_active() && function_exists('WC')) {
        $api_key = '';
        
        // Try to get API key from shipping zones
        if (class_exists('WC_Shipping_Zones')) {
            $shipping_zones = WC_Shipping_Zones::get_zones();
            foreach ($shipping_zones as $zone) {
                foreach ($zone['shipping_methods'] as $method) {
                    if ($method->id === 'dbdc' && !empty($method->get_option('api_key'))) {
                        $api_key = $method->get_option('api_key');
                        break 2;
                    }
                }
            }
        }
        
        // If not found in zones, try global settings
        if (empty($api_key)) {
            $shipping_methods = WC()->shipping()->get_shipping_methods();
            if (isset($shipping_methods['dbdc']) && !empty($shipping_methods['dbdc']->get_option('api_key'))) {
                $api_key = $shipping_methods['dbdc']->get_option('api_key');
            }
        }
        
        if (!empty($api_key)) {
            // Enqueue Google Places API
            wp_enqueue_script(
                'dbdc-google-places',
                'https://maps.googleapis.com/maps/api/js?key=' . $api_key . '&libraries=places&callback=Function.prototype',
                array('jquery'),
                null,
                true
            );

            // Enqueue custom styles
            wp_enqueue_style(
                'dbdc-checkout-styles',
                plugin_dir_url(__FILE__) . 'assets/checkout-styles.css',
                array(),
                '1.3.0'
            );

            // Add inline script with proper error handling
            wp_add_inline_script('dbdc-google-places', '
                (function($) {
                    var dbdcInitialized = false;
                    
                    function initDBDCAutocomplete() {
                        if (dbdcInitialized) return;
                        
                        var shippingInput = document.getElementById("shipping_address_1");
                        
                        if (!shippingInput) {
                            console.log("DBDC: Shipping address input not found");
                            return;
                        }
                        
                        // Check if Google Maps API is loaded
                        if (typeof google === "undefined" || typeof google.maps === "undefined" || typeof google.maps.places === "undefined") {
                            console.error("DBDC: Google Maps API not loaded properly");
                            return;
                        }
                        
                        // Create a container for the address field with icon
                        var container = document.createElement("div");
                        container.className = "dbdc-address-container";
                        shippingInput.parentNode.insertBefore(container, shippingInput);
                        container.appendChild(shippingInput);
                        
                        // Add search icon
                        var icon = document.createElement("i");
                        icon.className = "dbdc-search-icon fas fa-search";
                        container.appendChild(icon);
                        
                        // Add validation notice
                        var notice = document.createElement("div");
                        notice.className = "dbdc-validation-notice";
                        notice.innerHTML = "' . __('Please select an address from the dropdown suggestions', 'dbdc') . '";
                        container.parentNode.insertBefore(notice, container.nextSibling);
                        
                        // Store original value for comparison
                        var originalValue = shippingInput.value;
                        
                        var autocomplete = new google.maps.places.Autocomplete(shippingInput, { 
                            types: ["geocode"],
                            componentRestrictions: {country: "' . (WC()->countries->get_base_country() ?: '') . '"},
                            fields: ["address_components", "formatted_address"]
                        });
                        
                        // Prevent entering custom text
                        shippingInput.addEventListener("keydown", function(e) {
                            // Allow only navigation and deletion keys
                            var allowedKeys = [8, 9, 13, 16, 17, 18, 19, 20, 27, 33, 34, 35, 36, 37, 38, 39, 40, 45, 46, 91, 92, 93];
                            if (allowedKeys.indexOf(e.keyCode) === -1 && !e.ctrlKey && !e.metaKey) {
                                e.preventDefault();
                            }
                        });
                        
                        // Handle place selection
                        autocomplete.addListener("place_changed", function() {
                            var place = autocomplete.getPlace();
                            
                            if (!place.address_components) {
                                // Invalid selection, revert to original value
                                shippingInput.value = originalValue;
                                notice.style.display = "block";
                                return;
                            }
                            
                            // Hide validation notice
                            notice.style.display = "none";
                            
                            // Fill other address fields
                            dbdcFillAddressFields(place, "shipping");
                            
                            // Update original value
                            originalValue = shippingInput.value;
                            
                            // Trigger update of checkout
                            $(document.body).trigger("update_checkout");
                        });
                        
                        // Validate on blur
                        shippingInput.addEventListener("blur", function() {
                            if (shippingInput.value !== originalValue) {
                                // Value was changed manually, revert
                                shippingInput.value = originalValue;
                                notice.style.display = "block";
                            }
                        });
                        
                        dbdcInitialized = true;
                        console.log("DBDC: Autocomplete initialized successfully");
                    }
                    
                    function dbdcFillAddressFields(place, prefix) {
                        var components = place.address_components;
                        var data = {
                            address_1: "",
                            address_2: "",
                            city: "",
                            state: "",
                            postcode: "",
                            country: ""
                        };
                        
                        // Parse address components
                        for (var i = 0; i < components.length; i++) {
                            var component = components[i];
                            var type = component.types[0];
                            
                            if (type === "street_number") {
                                data.address_1 = component.long_name + " ";
                            } else if (type === "route") {
                                data.address_1 += component.long_name;
                            } else if (type === "subpremise") {
                                data.address_2 = component.long_name;
                            } else if (type === "locality") {
                                data.city = component.long_name;
                            } else if (type === "administrative_area_level_1") {
                                data.state = component.short_name;
                            } else if (type === "postal_code") {
                                data.postcode = component.long_name;
                            } else if (type === "country") {
                                data.country = component.short_name;
                            }
                        }
                        
                        // Update form fields
                        for (var field in data) {
                            if (data[field]) {
                                var el = document.getElementById(prefix + "_" + field);
                                if (el) {
                                    el.value = data[field];
                                    $(el).trigger("change");
                                }
                            }
                        }
                    }
                    
                    $(document).ready(function() {
                        // Initialize after a short delay to ensure everything is loaded
                        setTimeout(function() {
                            initDBDCAutocomplete();
                        }, 500);
                        
                        // Also try initializing when checkout updates
                        $(document.body).on("updated_checkout", function() {
                            setTimeout(function() {
                                initDBDCAutocomplete();
                            }, 1000);
                        });
                    });
                })(jQuery);
            ');
        }
    }
}
add_action('wp_enqueue_scripts', 'dbdc_enqueue_autocomplete');