(function () {
    'use strict';

    function ready(callback) {
        if (document.readyState === 'loading') {
            document.addEventListener('DOMContentLoaded', callback);
        } else {
            callback();
        }
    }

    ready(function () {
        var modal = document.getElementById('ndQuoteModal');
        var form = document.getElementById('ndQuoteForm');
        var status = document.getElementById('ndQuoteStatus');
        var result = document.getElementById('ndQuoteResult');
        var resultTitle = document.getElementById('ndQuoteResultTitle');
        var resultMessage = document.getElementById('ndQuoteResultMessage');
        var resultIcon = result ? result.querySelector('.nd-quote-result__icon i') : null;
        var resultBack = result ? result.querySelector('[data-quote-result-back]') : null;
        var resultClose = result ? result.querySelector('[data-quote-result-close]') : null;
        var triggers = document.querySelectorAll('.nd-quote-trigger');
        var closeButtons = modal ? modal.querySelectorAll('[data-quote-close]') : [];
        var customerType = form ? form.querySelector('[name="musteri_tipi"]') : null;
        var companyField = form ? form.querySelector('[name="firma_adi"]') : null;
        var loadingDate = form ? form.querySelector('[name="yukleme_tarihi"]') : null;
        var lastFocused = null;

        if (!modal || !form) {
            return;
        }

        if (loadingDate) {
            var today = new Date();
            var month = String(today.getMonth() + 1);
            var day = String(today.getDate());
            loadingDate.min = today.getFullYear() + '-' + (month.length < 2 ? '0' + month : month) + '-' + (day.length < 2 ? '0' + day : day);
        }

        function updateCompanyRequirement() {
            if (!customerType || !companyField) {
                return;
            }
            companyField.required = customerType.value === 'Firma';
        }

        if (customerType) {
            customerType.addEventListener('change', updateCompanyRequirement);
            updateCompanyRequirement();
        }

        function openModal(event) {
            if (event) {
                event.preventDefault();
            }
            lastFocused = document.activeElement;
            modal.classList.add('is-open');
            modal.setAttribute('aria-hidden', 'false');
            document.body.classList.add('nd-modal-open');
            window.setTimeout(function () {
                var firstInput = form.querySelector('select, input:not([type="hidden"]), textarea');
                if (firstInput) {
                    firstInput.focus();
                }
            }, 50);
        }

        function hideResult() {
            if (!result) {
                return;
            }
            result.classList.remove('is-visible', 'is-success', 'is-error');
            result.setAttribute('aria-hidden', 'true');
            form.classList.remove('is-result-hidden');
        }

        function showResult(success, message, language) {
            if (!result || !resultTitle || !resultMessage) {
                status.className = 'nd-quote-form__status ' + (success ? 'is-success' : 'is-error');
                status.textContent = message;
                return;
            }

            result.classList.remove('is-success', 'is-error');
            result.classList.add('is-visible', success ? 'is-success' : 'is-error');
            result.setAttribute('aria-hidden', 'false');
            form.classList.add('is-result-hidden');
            resultTitle.textContent = success
                ? (language === 'EN' ? 'Request received' : 'Talebiniz Alındı')
                : (language === 'EN' ? 'Request could not be sent' : 'Talep Gönderilemedi');
            resultMessage.textContent = message || (language === 'EN' ? 'Please try again.' : 'Lütfen tekrar deneyin.');

            if (resultIcon) {
                resultIcon.className = 'fa ' + (success ? 'fa-check' : 'fa-exclamation');
            }
            if (resultBack) {
                resultBack.style.display = success ? 'none' : 'inline-flex';
            }

            window.setTimeout(function () {
                var focusTarget = success ? resultClose : resultBack;
                if (focusTarget) {
                    focusTarget.focus();
                }
            }, 50);
        }

        function closeModal() {
            modal.classList.remove('is-open');
            modal.setAttribute('aria-hidden', 'true');
            document.body.classList.remove('nd-modal-open');
            hideResult();
            if (lastFocused && typeof lastFocused.focus === 'function') {
                lastFocused.focus();
            }
        }

        for (var i = 0; i < triggers.length; i++) {
            triggers[i].addEventListener('click', openModal);
        }

        for (var j = 0; j < closeButtons.length; j++) {
            closeButtons[j].addEventListener('click', closeModal);
        }

        if (resultBack) {
            resultBack.addEventListener('click', function () {
                hideResult();
                var submitButton = form.querySelector('.nd-quote-form__submit');
                if (submitButton) {
                    submitButton.focus();
                }
            });
        }

        if (resultClose) {
            resultClose.addEventListener('click', closeModal);
        }

        document.addEventListener('keydown', function (event) {
            if (!modal.classList.contains('is-open')) {
                return;
            }

            if (event.key === 'Escape' || event.keyCode === 27) {
                closeModal();
                return;
            }

            if (event.key === 'Tab' || event.keyCode === 9) {
                var focusArea = result && result.classList.contains('is-visible') ? result : form;
                var focusable = focusArea.querySelectorAll('a[href], button:not([disabled]), input:not([disabled]):not([type="hidden"]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])');
                if (!focusable.length) {
                    return;
                }
                var first = focusable[0];
                var last = focusable[focusable.length - 1];
                if (event.shiftKey && document.activeElement === first) {
                    event.preventDefault();
                    last.focus();
                } else if (!event.shiftKey && document.activeElement === last) {
                    event.preventDefault();
                    first.focus();
                }
            }
        });

        form.addEventListener('submit', function (event) {
            event.preventDefault();

            if (!form.checkValidity()) {
                form.reportValidity();
                return;
            }

            var submitButton = form.querySelector('.nd-quote-form__submit');
            var submitLabel = submitButton.querySelector('span');
            var originalLabel = submitLabel.textContent;
            var language = form.querySelector('[name="form_lang"]').value;

            status.className = 'nd-quote-form__status';
            status.textContent = '';
            submitButton.disabled = true;
            submitButton.classList.add('is-loading');
            submitLabel.textContent = language === 'EN' ? 'Sending...' : 'Gönderiliyor...';

            var xhr = new XMLHttpRequest();
            xhr.open('POST', form.action, true);
            xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');

            xhr.onreadystatechange = function () {
                if (xhr.readyState !== 4) {
                    return;
                }

                submitButton.disabled = false;
                submitButton.classList.remove('is-loading');
                submitLabel.textContent = originalLabel;

                var response;
                try {
                    response = JSON.parse(xhr.responseText);
                } catch (error) {
                    response = { success: false, message: language === 'EN' ? 'An unexpected error occurred. Please try again.' : 'Beklenmeyen bir hata oluştu. Lütfen tekrar deneyin.' };
                }

                showResult(Boolean(response.success), response.message, language);

                if (response.success) {
                    form.reset();
                    updateCompanyRequirement();
                }
            };

            xhr.onerror = function () {
                submitButton.disabled = false;
                submitButton.classList.remove('is-loading');
                submitLabel.textContent = originalLabel;
                showResult(false, language === 'EN' ? 'The connection could not be established. Please try again.' : 'Bağlantı kurulamadı. Lütfen tekrar deneyin.', language);
            };

            xhr.send(new FormData(form));
        });
    });
}());