$j(document).ready(function(){

  // Customer Info Input fields
  var custFirstNameField = $j('#custFirstName');
  var custLastNameField = $j('#custLastName');
  var custPhoneField = $j('#custPhone');
  var custEmailField = $j('#custEmail');
  
  // Shipping Info Input fields
  var shipFirstNameField = $j('#shipFirstName');
  var shipLastNameField = $j('#shipLastName');
  var shipPhoneField = $j('#shipPhone');
  var shipEmailField = $j('#shipEmail');
  var shipAddress1Field = $j('#shipAddress1');
  var shipAddress2Field = $j('#shipAddress2');
  var shipCityField = $j('#shipCity');
  var shipStateField = $j('#shipState');
  var shipZipField = $j('#shipZip');
  var shipUrbanizationField = $j('#shipUrbanization');
  
  // Same as above check-box
  var sameAsAboveCheckBox = $j('#sameAsAboveCheckbox');
  
  // Check out now button
  var checkoutButton = $j('#checkoutBtn');
  
  // Error message display div
  var guestErrorDisplay = $j('#guestErrors');
  
  // Regex for validation
  var addrTest = /^[A-Za-z0-9\s\"\?\#\&\(\)\+\,\-\.\/\@\']{1,50}$/;
  var stateTest = /^[A-Za-z]{2}$/;
  var zipTest = /^(\d{5}-\d{4})|(\d{5})$/;
  var nameTest = /^[A-Za-z\s\-\.\']{1,50}$/;
  var emailTest = /(^['_A-Za-z0-9+-]+(\.['_A-Za-z0-9+-]+)*@([A-Za-z0-9-])+(\.[A-Za-z0-9-]+)*((\.[A-Za-z0-9]{2,})|(\.[A-Za-z0-9]{2,}\.[A-Za-z0-9]{2,}))$)/;
  var phoneTest = /^1?\W*([2-9][0-8][0-9])\W*([2-9][0-9]{2})\W*([0-9]{4})(\se?x?t?(\d*))?$/;
  
  /* Object for field errors
   * @param field The field
   * @param required true if field is required, false otherwise
   * @param regex Pattern for field validation
   * @param blankError Error message if required field is left blank
   * @param invalidError Error message if input for field is invalid
   */
  function fieldInfo(field, required, regex, blankError, invalidError) {
    this.field = field;
    this.fieldErr = field.siblings(".error-message");
    this.required = required;
    this.regex = regex;
    this.blankError = blankError;
    this.invalidError = invalidError;
    this.hideFieldError = hideFieldError;
    this.showFieldError = showFieldError;
    this.setErrorMsg = setErrorMsg;
  }
  
  // fieldInfo method: hides field error message
  function hideFieldError() {
    this.field.parent().removeClass("error");
  }
  
  // fieldInfo method: shows field error message
  function showFieldError() {
    this.field.parent().addClass("error");
  }
  
  // fieldInfo method: set field error message to given message
  function setErrorMsg(message) {
    this.fieldErr.text(message);
  }

/*****************************
 * Field validation
 ****************************/

  // Field validation setup
  var custFirstName = new fieldInfo(custFirstNameField, true, nameTest, "Please enter first name", "First name contains invalid characters");
  var custLastName = new fieldInfo(custLastNameField, true, nameTest, "Please enter last name", "Last name contains invalid characters");
  var custPhone = new fieldInfo(custPhoneField, true, phoneTest, "Please enter phone number", "Phone number is invalid");
  var custEmail = new fieldInfo(custEmailField, true, emailTest, "Please enter email", "Email contains invalid characters");
  var shipFirstName = new fieldInfo(shipFirstNameField, true, nameTest, "Please enter first name", "First name contains invalid characters");
  var shipLastName = new fieldInfo(shipLastNameField, true, nameTest, "Please enter last name", "Last name contains invalid characters");
  var shipPhone = new fieldInfo(shipPhoneField, true, phoneTest, "Please enter phone number", "Phone number is invalid");
  var shipEmail = new fieldInfo(shipEmailField, true, emailTest, "Please enter email", "Email contains invalid characters");
  var shipAddress1 = new fieldInfo(shipAddress1Field, true, addrTest, "Please enter address", "Address contains invalid characters");
  var shipAddress2 = new fieldInfo(shipAddress2Field, false, addrTest, "Please enter address", "Address contains invalid characters");
  var shipCity = new fieldInfo(shipCityField, true, addrTest, "Please enter city", "City contains invalid characters");
  var shipState = new fieldInfo(shipStateField, true, stateTest, "Please select state or province", "State contains invalid characters");
  var shipZip = new fieldInfo(shipZipField, true, zipTest, "Please enter ZIP or postal code", "ZIP contains invalid characters");
  var shipUrbanization = new fieldInfo(shipUrbanizationField, false, addrTest, "Please enter urbanization", "Urbanization contains invalid characters");
  
  var allFields = [custFirstName, custLastName, custPhone, custEmail, shipFirstName, shipLastName, shipPhone, shipEmail, shipAddress1, shipAddress2, shipCity, shipState, shipZip, shipUrbanization];
  
  /*
   * Validates a field and displays/hides error messages
   * returns true if filed is valid, false otherwise
   */
  function validateField(fieldInfo) {
    if (isBlank(fieldInfo.field.val())) {
      if (fieldInfo.required) {
        // Blank required field: error
        fieldInfo.setErrorMsg(fieldInfo.blankError);
        fieldInfo.showFieldError();
        return false;
      } else {
        // Blank non-required field: no error
        fieldInfo.hideFieldError();
        return true;
      }
    } else if (!fieldInfo.regex.test(fieldInfo.field.val())) {
      // Invalid input: error
      fieldInfo.setErrorMsg(fieldInfo.invalidError);
      fieldInfo.showFieldError();
      return false;
    } else {
      // No errors found
      fieldInfo.hideFieldError();
      return true;
    }
  }
  
  function validateFieldOnBlur(fieldInfo) {
    fieldInfo.field.on('blur', function() {
      validateField(fieldInfo);
    });
  }
  
  for (var i = 0; i < allFields.length; i++) {
    validateFieldOnBlur(allFields[i]);
    clearFieldErrorOnFocus(allFields[i]);
  }

  /*
   * Validate before form submission
   */
  /*$j('#guestShippingForm').submit(function(e) {
    if (checkRequiredFields()) {
     amsValidate();
    } else {
      return false;
    }
  }); */

  /*
   * Validate before form submission
   */
  $j('#moveToBillingBtn').click(function(e) {
    if (checkRequiredFields()) {
      amsValidate();
    } else {
      return false;
    }
  });

  /*
   * Removes all field errors
   */
  function clearErrors() {
    arrLength = allFields.length;
    for (var i = 0; i < arrLength; i++) {
      allFields[i].hideFieldError();
    }
  }
  /*
  
  /*
   * Removes field error message while editing field
   */
  function clearFieldErrorOnFocus(fieldInfo) {
    fieldInfo.field.on('focus', function() {
      fieldInfo.hideFieldError();
    });
  }
  
  /*
   * Validates all fields and shows error messages.
   * Returns true if all fields are valid, false otherwise
   */
  function checkRequiredFields() {
    clearErrors();
    var allFieldsValid = true;
    for (var i = 0; i < allFields.length; i++) {
      if (!validateField(allFields[i])) {
        allFieldsValid = false;
      };
    }
    return allFieldsValid;
  }
  
  /*
   * Copies the customer first name, last name, phone, and email to the
   * shipping fields when 'same as above' check-box gets checked.
   */
  sameAsAboveCheckBox.on('click touch', function() {
    // Copy fields if checked
    if ($j('#sameAsAboveCheckbox').is(':checked')) {
      shipFirstNameField.val(custFirstNameField.val());
      shipLastNameField.val(custLastNameField.val());
      shipPhoneField.val(custPhoneField.val());
      shipEmailField.val(custEmailField.val());

      // Remove errors from filled in ship fields
      for (var i = 4; i < 8; i++) {
        validateField(allFields[i]);
      }
    }
  });

  // Show urbanization field when PR selected
  $j(document).on('change','#shipState',function(e){
    e.preventDefault;
    if($j(this).val()=='PR'){
      $j('.urbanization-code-wrapper.collapse').addClass('show');
    }else{
      $j('.urbanization-code-wrapper.collapse').removeClass('show');
      shipUrbanizationField.val("");
    }
  });
  
  $j(document).on('focusout','#custFirstName',function(e){
    if ($j('#sameAsAboveCheckbox').is(':checked')) {
		shipFirstNameField.val(custFirstNameField.val());
		validateField(allFields[4]);
	}
  });
  
  $j(document).on('focusout','#custLastName',function(e){
	if ($j('#sameAsAboveCheckbox').is(':checked')) {
		shipLastNameField.val(custLastNameField.val());
		validateField(allFields[5]);
	}
  });
  
  $j(document).on('focusout','#custPhone',function(e){
	if ($j('#sameAsAboveCheckbox').is(':checked')) {
		shipPhoneField.val(custPhoneField.val());
		validateField(allFields[6]);
	}
  });
  
  $j(document).on('focusout','#custEmail',function(e){
	if ($j('#sameAsAboveCheckbox').is(':checked')) {
		shipEmailField.val(custEmailField.val());
		validateField(allFields[7]);
	}
  });

/**********************************
 * AMS Validation
 *********************************/
  
  function createAmsRequestData() {
    return {'validate':'{"verifyAddressRequest":{"address":{\
    "addr1":"' + shipAddress1Field.val() + '",\
    "addr2":"' + shipAddress2Field.val() + '",\
    "city":"' + shipCityField.val() + '",\
    "state":"' + shipStateField.val() + '",\
    "zip":"' + shipZipField.val() + '"}}}'};
  }
  
  function updateAddressFromAmsResponse(response) {
    shipAddress1Field.val(response.verifyAddressResponse.address[0].addr1);
    shipAddress2Field.val(response.verifyAddressResponse.address[0].addr2);
    shipCityField.val(response.verifyAddressResponse.address[0].city);
    shipStateField.val(response.verifyAddressResponse.address[0].state);
    shipZipField.val(splitZip(response.verifyAddressResponse.address[0].zip));
  }
  
  function amsValidate() {
    
    var host = window.location.host;
    var protocol = window.location.protocol;
    var ams_url = "/AMS/AddressValidationServlet";
    $j.ajaxSetup({cache:false});

    var jqxhr = $j.getJSON(protocol + "//" + host + ams_url, createAmsRequestData(),
    function(response) {
      if (typeof response.verifyAddressResponse.address != 'undefined') {
        // Success: Update address and proceed
        updateAddressFromAmsResponse(response);
        $("#createAndMoveToBilling").click();
      } else if (typeof response.verifyAddressResponse.error != 'undefined'){
        // AMS Error: Display error message
        if (response.verifyAddressResponse.error.code == "ADDRESS_ERROR") {
          guestErrorDisplay.html('<span role="alert" class="error-message bold">' + response.verifyAddressResponse.error.message + '</span>');
        } else if (response.verifyAddressResponse.error.code == "SERVICE_UNAVAILABLE") {
          guestErrorDisplay.html('<span role="alert" class="error-message bold">' + response.verifyAddressResponse.error.message + '</span>');
        } else {
          guestErrorDisplay.html('<span role="alert" class="error-message bold">' + response.verifyAddressResponse.error.message + '</span>');
        }
      }
    }).fail(function(XMLHttpRequest, textStatus, errorThrown) {
      // AMS not available: Display error message
      var errMsg = "The service is unavailable at this time please try again later.";
      guestErrorDisplay.html('<span role="alert" class="error-message bold">' + errMsg + '</span>');
    });
  }
});
 
/*
 * Check if input string is blank
 */
function isBlank(str) {
  return (!str || /^\s*$/.test(str));
}

/*
 * Split 9 digit zip into format 12345-6789
 */
function splitZip(input){
  if (!isBlank(input)) {
    if (input.length > 5) {
      return input.substring(0,5)+"-"+input.substring(5,input.length);
    } else {
      return input;
    }
  }
}