window.addEventListener('load', function(){
  // 체크박스 초기
let lastChecked = null;

let checkBoxes = document.querySelectorAll('.chk-list input[name="type"]');
checkBoxes.forEach(chk => {
  chk.addEventListener('change', function() {
    if (this.checked) {
      lastChecked = this;
    }
  });
});


const submitBtn = document.getElementById('submitBtn');

// 문의 이벤트
submitBtn.addEventListener('click' , function(e){
  // 기본 이벤트 제거
  e.preventDefault();

  let checkedBoxes = document.querySelectorAll('.chk-list input[name="type"]:checked');
  let typeCheck = checkedBoxes.length;
  
  let name = document.getElementById('name');
  let company = document.getElementById('company');
  
  let frontEmail = document.getElementById("frontEmail");
  let backEmail = document.getElementById("backEmail");

  let tel = document.getElementById('tel');
  let detail = document.getElementById('detail');

  let agree = document.getElementById('agreeChk');

  if (typeCheck < 1) {
    alert("Please select at least one inquiry type.");

    let focusTarget = lastChecked || checkedBoxes[0] || document.querySelector('.chk-list input[name="type"]');
    if (focusTarget) {
      focusTarget.focus();
    }

    return false;
  }

  // if (typeCheck > 2) {
  //   alert("문의유형은 최대 2개까지만 선택이 가능합니다.");

  //   if (lastChecked) {
  //     // lastChecked.checked = false;
  //     lastChecked.focus();
  //     // lastChecked = null;
  //   }
  //   return false;
  // }

  if(name.value === ""){
    alert('Please enter your name.');
    name.focus();
    return false;
  }

  // if(company.value === ""){
  //   alert('회사 및 기관명을 입력해주세요.');
  //   company.focus();
  //   return false;
  // }

  if (frontEmail.value.trim() === "" || backEmail.value.trim() === "") {
    alert("Please enter your e-mail address.");
    frontEmail.focus();
    return false;
  }

  if(tel.value === ""){
    alert('Please enter your contact information(Mobile phone).');
    tel.focus();
    return false;
  }

  if(detail.value === ""){
    alert('Please enter your inquiry details.');
    detail.focus();
    return false;
  }


  if(agree.checked === false){
    alert('Please agree to the privacy policy.');
    agree.focus();
    return false;
  }


  alert('Your inquiry has been registered.');
  location.reload(true);
})


}, false);