class AddressFormController {
    /**
     * @param {HTMLElement} checkoutFormElement
     * @param {ValidationService} validationService
     */
    constructor(checkoutFormElement, validationService) {
        //Select some elements
        if(!checkoutFormElement) {
            console.error('AddressFormController: Expecting a element upon construction that holds all address form elements. AddressFormController stopped working');
            return;
        }

        this.checkoutFormElement = checkoutFormElement;
        this.validationService = validationService;

        this.shippingAddressCheckbox = checkoutFormElement.querySelector('.js-shipping-address-equals');
        this.shippingAddressFormGroup = checkoutFormElement.querySelector('.js-shipping-address');

        this.shippingAddressFormGroupInputs = this.shippingAddressFormGroup.querySelectorAll('input');

        this.shippingAddressCheckboxChanged = this.shippingAddressCheckboxChanged.bind(this);

        this.shippingAddressCheckboxChanged();
        this.controlListeners(true);
    }

    /**
     * @param {boolean} enabled
     */
    controlListeners(enabled)
    {
        this.shippingAddressCheckbox.removeEventListener('click', this.shippingAddressCheckboxChanged);

        if(enabled) {
            this.shippingAddressCheckbox.addEventListener('click', this.shippingAddressCheckboxChanged);
        }
    }

    /**
     * {MouseEvent|undefined} event
     */
    shippingAddressCheckboxChanged(event)
    {
        if(this.shippingAddressCheckbox.checked) {
            this.shippingAddressFormGroup.classList.add('u-hidden');
            this.clearShippingAddressFields();
        } else {
            this.shippingAddressFormGroup.classList.remove('u-hidden');
        }
    }

    clearShippingAddressFields()
    {
        this.shippingAddressFormGroupInputs.forEach(
            /** @param {HTMLInputElement} input */
            function(input) {
                input.value = '';
            }
        );
    }
}

export { AddressFormController }