/**
 * @fileoverview    function used in table data manipulation pages
 *
 * @requires    jQuery
 * @requires    jQueryUI
 * @requires    js/functions.js
 *
 */

/* global extendingValidatorMessages */ // templates/javascript/variables.twig
/* global openGISEditor, gisEditorLoaded, loadJSAndGISEditor, loadGISEditor */ // js/gis_data_editor.js

/**
 * Modify form controls when the "NULL" checkbox is checked
 *
 * @param {string} theType   the MySQL field type
 * @param {string} urlField  the urlencoded field name - OBSOLETE
 * @param {string} md5Field  the md5 hashed field name
 * @param {string} multiEdit the multi_edit row sequence number
 *
 * @return {boolean} always true
 */
function nullify(theType, urlField, md5Field, multiEdit) {
  var rowForm = document.forms.insertForm;
  if (typeof rowForm.elements['funcs' + multiEdit + '[' + md5Field + ']'] !== 'undefined') {
    rowForm.elements['funcs' + multiEdit + '[' + md5Field + ']'].selectedIndex = -1;
  }

  // "ENUM" field with more than 20 characters
  if (Number(theType) === 1) {
    rowForm.elements['fields' + multiEdit + '[' + md5Field + ']'][1].selectedIndex = -1;
    // Other "ENUM" field
  } else if (Number(theType) === 2) {
    var elts = rowForm.elements['fields' + multiEdit + '[' + md5Field + ']'];
    // when there is just one option in ENUM:
    if (elts.checked) {
      elts.checked = false;
    } else {
      var eltsCnt = elts.length;
      for (var i = 0; i < eltsCnt; i++) {
        elts[i].checked = false;
      } // end for
    } // end if
    // "SET" field
  } else if (Number(theType) === 3) {
    rowForm.elements['fields' + multiEdit + '[' + md5Field + '][]'].selectedIndex = -1;
    // Foreign key field (drop-down)
  } else if (Number(theType) === 4) {
    rowForm.elements['fields' + multiEdit + '[' + md5Field + ']'].selectedIndex = -1;
    // foreign key field (with browsing icon for foreign values)
  } else if (Number(theType) === 6) {
    rowForm.elements['fields' + multiEdit + '[' + md5Field + ']'].value = '';
    // Other field types
  } else /* if (theType === 5)*/{
      rowForm.elements['fields' + multiEdit + '[' + md5Field + ']'].value = '';
    } // end if... else if... else

  return true;
} // end of the 'nullify()' function

/**
 * javascript DateTime format validation.
 * its used to prevent adding default (0000-00-00 00:00:00) to database when user enter wrong values
 * Start of validation part
 */
// function checks the number of days in febuary
function daysInFebruary(year) {
  return year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0) ? 29 : 28;
}
// function to convert single digit to double digit
function fractionReplace(number) {
  var num = parseInt(number, 10);
  return num >= 1 && num <= 9 ? '0' + num : '00';
}

/* function to check the validity of date
* The following patterns are accepted in this validation (accepted in mysql as well)
* 1) 2001-12-23
* 2) 2001-1-2
* 3) 02-12-23
* 4) And instead of using '-' the following punctuations can be used (+,.,*,^,@,/) All these are accepted by mysql as well. Therefore no issues
*/
function isDate(val, tmstmp) {
  var value = val.replace(/[.|*|^|+|//|@]/g, '-');
  var arrayVal = value.split('-');
  for (var a = 0; a < arrayVal.length; a++) {
    if (arrayVal[a].length === 1) {
      arrayVal[a] = fractionReplace(arrayVal[a]);
    }
  }
  value = arrayVal.join('-');
  var pos = 2;
  var dtexp = new RegExp(/^([0-9]{4})-(((01|03|05|07|08|10|12)-((0[0-9])|([1-2][0-9])|(3[0-1])))|((02|04|06|09|11)-((0[0-9])|([1-2][0-9])|30))|((00)-(00)))$/);
  if (value.length === 8) {
    pos = 0;
  }
  if (dtexp.test(value)) {
    var month = parseInt(value.substring(pos + 3, pos + 5), 10);
    var day = parseInt(value.substring(pos + 6, pos + 8), 10);
    var year = parseInt(value.substring(0, pos + 2), 10);
    if (month === 2 && day > daysInFebruary(year)) {
      return false;
    }
    if (value.substring(0, pos + 2).length === 2) {
      year = parseInt('20' + value.substring(0, pos + 2), 10);
    }
    if (tmstmp === true) {
      if (year < 1978) {
        return false;
      }
      if (year > 2038 || year > 2037 && day > 19 && month >= 1 || year > 2037 && month > 1) {
        return false;
      }
    }
  } else {
    return false;
  }
  return true;
}

/* function to check the validity of time
* The following patterns are accepted in this validation (accepted in mysql as well)
* 1) 2:3:4
* 2) 2:23:43
* 3) 2:23:43.123456
*/
function isTime(val) {
  var arrayVal = val.split(':');
  for (var a = 0, l = arrayVal.length; a < l; a++) {
    if (arrayVal[a].length === 1) {
      arrayVal[a] = fractionReplace(arrayVal[a]);
    }
  }
  var newVal = arrayVal.join(':');
  var tmexp = new RegExp(/^(-)?(([0-7]?[0-9][0-9])|(8[0-2][0-9])|(83[0-8])):((0[0-9])|([1-5][0-9])):((0[0-9])|([1-5][0-9]))(\.[0-9]{1,6}){0,1}$/);
  return tmexp.test(newVal);
}

/**
 * To check whether insert section is ignored or not
 * @param {string} multiEdit
 * @return {boolean}
 */
function checkForCheckbox(multiEdit) {
  if ($('#insert_ignore_' + multiEdit).length) {
    return $('#insert_ignore_' + multiEdit).is(':unchecked');
  }
  return true;
}

// used in Search page mostly for INT fields
// eslint-disable-next-line no-unused-vars
function verifyAfterSearchFieldChange(index, searchFormId) {
  var $thisInput = $('input[name=\'criteriaValues[' + index + ']\']');
  // Add  data-skip-validators attribute to skip validation in changeValueFieldType function
  if ($('#fieldID_' + index).data('data-skip-validators')) {
    $(searchFormId).validate().destroy();
    return;
  }
  // validation for integer type
  if ($thisInput.data('type') === 'INT' || $thisInput.data('type') === 'TINYINT') {
    // Trim spaces if it's an integer
    $thisInput.val($thisInput.val().trim());
    var hasMultiple = $thisInput.prop('multiple');
    if (hasMultiple) {
      $(searchFormId).validate({
        // update errors as we write
        onkeyup: function (element) {
          $(element).valid();
        }
      });
      // validator method for IN(...), NOT IN(...)
      // BETWEEN and NOT BETWEEN
      // See all possible syntaxes in tests of https://regexr.com/7h1eq
      jQuery.validator.addMethod('validationFunctionForMultipleInt', function (value) {
        if (value === '') {
          return true;
        }
        return value.replace(/ /g, '').match(/^(((0x[0-9a-f]+)|([+-]?([0-9]*\.?[0-9]+|[0-9]+\.?[0-9]*)(e[+-]?[0-9]+)?))(,|$))+$/i) !== null;
      }, Messages.strEnterValidNumber);
      validateMultipleIntField($thisInput, true);
    } else {
      // validator method for INTs
      // See all possible syntaxes in tests of https://regexr.com/7h1ci
      jQuery.validator.addMethod('validationFunctionForInt', function (value) {
        if (value === '') {
          return true;
        }
        return value.match(/^(0x[0-9a-f]+$)|([+-]?([0-9]*\.?[0-9]+|[0-9]+\.?[0-9]*)(e[+-]?[0-9]+)?)$/i) !== null;
      }, Messages.strEnterValidNumber);
      $(searchFormId).validate({
        // update errors as we write
        onkeyup: function (element) {
          $(element).valid();
        }
      });
      validateIntField($thisInput, true);
    }
    // Update error on dropdown change
    $thisInput.valid();
  }
}

/**
 * Validate the an input contains multiple int values
 * @param {jQuery} jqueryInput the Jquery object
 * @param {boolean} returnValueIfFine the value to return if the validator passes
 * @return {void}
 */
function validateMultipleIntField(jqueryInput, returnValueIfFine) {
  // removing previous rules
  jqueryInput.rules('remove');
  jqueryInput.rules('add', {
    validationFunctionForMultipleInt: {
      param: jqueryInput.value,
      depends: function () {
        return returnValueIfFine;
      }
    }
  });
}

/**
 * Validate the an input contains an int value
 * @param {jQuery} jqueryInput the Jquery object
 * @param {boolean} returnValueIfIsNumber the value to return if the validator passes
 * @return {void}
 */
function validateIntField(jqueryInput, returnValueIfIsNumber) {
  var mini = parseInt(jqueryInput.data('min'));
  var maxi = parseInt(jqueryInput.data('max'));
  // removing previous rules
  jqueryInput.rules('remove');
  jqueryInput.rules('add', {
    validationFunctionForInt: {
      param: jqueryInput.value,
      depends: function () {
        return returnValueIfIsNumber;
      }
    },
    min: {
      param: mini,
      depends: function () {
        if (isNaN(jqueryInput.val())) {
          return false;
        } else {
          return returnValueIfIsNumber;
        }
      }
    },
    max: {
      param: maxi,
      depends: function () {
        if (isNaN(jqueryInput.val())) {
          return false;
        } else {
          return returnValueIfIsNumber;
        }
      }
    }
  });
}
function verificationsAfterFieldChange(urlField, multiEdit, theType) {
  var evt = window.event || arguments.callee.caller.arguments[0];
  var target = evt.target || evt.srcElement;
  var $thisInput = $(':input[name^=\'fields[multi_edit][' + multiEdit + '][' + urlField + ']\']');
  // the function drop-down that corresponds to this input field
  var $thisFunction = $('select[name=\'funcs[multi_edit][' + multiEdit + '][' + urlField + ']\']');
  var functionSelected = false;
  if (typeof $thisFunction.val() !== 'undefined' && $thisFunction.val() !== null && $thisFunction.val().length > 0) {
    functionSelected = true;
  }

  // To generate the textbox that can take the salt
  var newSaltBox = '<br><input type=text name=salt[multi_edit][' + multiEdit + '][' + urlField + ']' + ' id=salt_' + target.id + ' placeholder=\'' + Messages.strEncryptionKey + '\'>';

  // If encrypting or decrypting functions that take salt as input is selected append the new textbox for salt
  if (target.value === 'AES_ENCRYPT' || target.value === 'AES_DECRYPT' || target.value === 'DES_ENCRYPT' || target.value === 'DES_DECRYPT' || target.value === 'ENCRYPT') {
    if (!$('#salt_' + target.id).length) {
      $thisInput.after(newSaltBox);
    }
  } else {
    // Remove the textbox for salt
    $('#salt_' + target.id).prev('br').remove();
    $('#salt_' + target.id).remove();
  }
  var couldFetchRules = false;
  try {
    // See: issue #18792 - In some weird cases the input goes away before it validates
    // And it breaks jquery, this is a well known jquery bug with different trigger schemes
    $('#' + target.id).rules();
    couldFetchRules = true;
  } catch (error) {
    console.log(error);
  }
  if (couldFetchRules) {
    // Remove possible blocking rules if the user changed functions
    $('#' + target.id).rules('remove', 'validationFunctionForMd5');
    $('#' + target.id).rules('remove', 'validationFunctionForAesDesEncrypt');
    if (target.value === 'MD5') {
      $('#' + target.id).rules('add', {
        validationFunctionForMd5: {
          param: $thisInput,
          depends: function () {
            return checkForCheckbox(multiEdit);
          }
        }
      });
    }
    if (target.value === 'DES_ENCRYPT' || target.value === 'AES_ENCRYPT') {
      $('#' + target.id).rules('add', {
        validationFunctionForAesDesEncrypt: {
          param: $thisInput,
          depends: function () {
            return checkForCheckbox(multiEdit);
          }
        }
      });
    }
  }
  if (target.value === 'HEX' && theType.substring(0, 3) === 'int') {
    // Add note when HEX function is selected on a int
    var newHexInfo = '<br><p id="note' + target.id + '">' + Messages.HexConversionInfo + '</p>';
    if (!$('#note' + target.id).length) {
      $thisInput.after(newHexInfo);
    }
  } else {
    $('#note' + target.id).prev('br').remove();
    $('#note' + target.id).remove();
  }
  // Unchecks the corresponding "NULL" control
  $('input[name=\'fields_null[multi_edit][' + multiEdit + '][' + urlField + ']\']').prop('checked', false);

  // Unchecks the Ignore checkbox for the current row
  $('input[name=\'insert_ignore_' + multiEdit + '\']').prop('checked', false);
  var charExceptionHandling;
  if (theType.substring(0, 4) === 'char') {
    charExceptionHandling = theType.substring(5, 6);
  } else if (theType.substring(0, 7) === 'varchar') {
    charExceptionHandling = theType.substring(8, 9);
  }
  if (functionSelected) {
    $thisInput.removeAttr('min');
    $thisInput.removeAttr('max');
    // @todo: put back attributes if corresponding function is deselected
  }
  if ($thisInput.data('rulesadded') === null && !functionSelected) {
    // call validate before adding rules
    $($thisInput[0].form).validate();
    // validate for date time
    if (theType === 'datetime' || theType === 'time' || theType === 'date' || theType === 'timestamp') {
      $thisInput.rules('add', {
        validationFunctionForDateTime: {
          param: theType,
          depends: function () {
            return checkForCheckbox(multiEdit);
          }
        }
      });
    }
    // validation for integer type
    if ($thisInput.data('type') === 'INT') {
      validateIntField($thisInput, checkForCheckbox(multiEdit));
      // validation for CHAR types
    } else if ($thisInput.data('type') === 'CHAR') {
      var maxlen = $thisInput.data('maxlength');
      if (typeof maxlen !== 'undefined') {
        if (maxlen <= 4) {
          maxlen = charExceptionHandling;
        }
        $thisInput.rules('add', {
          maxlength: {
            param: maxlen,
            depends: function () {
              return checkForCheckbox(multiEdit);
            }
          }
        });
      }
      // validate binary & blob types
    } else if ($thisInput.data('type') === 'HEX') {
      $thisInput.rules('add', {
        validationFunctionForHex: {
          param: true,
          depends: function () {
            return checkForCheckbox(multiEdit);
          }
        }
      });
    }
    $thisInput.data('rulesadded', true);
  } else if ($thisInput.data('rulesadded') === true && functionSelected) {
    // remove any rules added
    $thisInput.rules('remove');
    // remove any error messages
    $thisInput.removeClass('error').removeAttr('aria-invalid').siblings('.error').remove();
    $thisInput.data('rulesadded', null);
  }
}
/* End of fields validation*/

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('table/change.js', function () {
  $(document).off('click', 'span.open_gis_editor');
  $(document).off('click', 'input[name^=\'insert_ignore_\']');
  $(document).off('click', 'input[name=\'gis_data[save]\']');
  $(document).off('click', 'input.checkbox_null');
  $('select[name="submit_type"]').off('change');
  $(document).off('change', '#insert_rows');
});

/**
 * Ajax handlers for Change Table page
 *
 * Actions Ajaxified here:
 * Submit Data to be inserted into the table.
 * Restart insertion with 'N' rows.
 */
AJAX.registerOnload('table/change.js', function () {
  if ($('#insertForm').length) {
    // validate the comment form when it is submitted
    $('#insertForm').validate();
    jQuery.validator.addMethod('validationFunctionForHex', function (value) {
      return value.match(/^[a-f0-9]*$/i) !== null;
    });
    jQuery.validator.addMethod('validationFunctionForMd5', function (value, element, options) {
      return !(value.substring(0, 3) === 'MD5' && typeof options.data('maxlength') !== 'undefined' && options.data('maxlength') < 32);
    });
    jQuery.validator.addMethod('validationFunctionForAesDesEncrypt', function (value, element, options) {
      var funType = value.substring(0, 3);
      if (funType !== 'AES' && funType !== 'DES') {
        return false;
      }
      var dataType = options.data('type');
      if (dataType === 'HEX' || dataType === 'CHAR') {
        return true;
      }
      return false;
    });
    jQuery.validator.addMethod('validationFunctionForDateTime', function (value, element, options) {
      var dtValue = value;
      var theType = options;
      if (theType === 'date') {
        return isDate(dtValue);
      } else if (theType === 'time') {
        return isTime(dtValue);
      } else if (theType === 'datetime' || theType === 'timestamp') {
        var tmstmp = false;
        dtValue = dtValue.trim();
        if (dtValue === 'CURRENT_TIMESTAMP' || dtValue === 'current_timestamp()') {
          return true;
        }
        if (theType === 'timestamp') {
          tmstmp = true;
        }
        if (dtValue === '0000-00-00 00:00:00') {
          return true;
        }
        var dv = dtValue.indexOf(' ');
        if (dv === -1) {
          // Only the date component, which is valid
          return isDate(dtValue, tmstmp);
        }
        return isDate(dtValue.substring(0, dv), tmstmp) && isTime(dtValue.substring(dv + 1));
      }
    });
  }

  /*
   * message extending script must be run
   * after initiation of functions
   */
  extendingValidatorMessages();
  $.datepicker.initialized = false;
  $(document).on('click', 'span.open_gis_editor', function (event) {
    event.preventDefault();
    var $span = $(this);
    // Current value
    var value = $span.parent('td').children('input[type=\'text\']').val();
    // Field name
    var field = $span.parents('tr').children('td').first().find('input[type=\'hidden\']').val();
    // Column type
    var type = $span.parents('tr').find('span.column_type').text();
    // Names of input field and null checkbox
    var inputName = $span.parent('td').children('input[type=\'text\']').attr('name');
    openGISEditor();
    if (!gisEditorLoaded) {
      loadJSAndGISEditor(value, field, type, inputName);
    } else {
      loadGISEditor(value, field, type, inputName);
    }
  });

  /**
   * Forced validation check of fields
   */
  $(document).on('click', 'input[name^=\'insert_ignore_\']', function () {
    $('#insertForm').valid();
  });

  /**
   * Uncheck the null checkbox as geometry data is placed on the input field
   */
  $(document).on('click', 'input[name=\'gis_data[save]\']', function () {
    var inputName = $('form#gis_data_editor_form').find('input[name=\'input_name\']').val();
    var currentRow = $('input[name=\'' + inputName + '\']').parents('tr');
    var $nullCheckbox = currentRow.find('.checkbox_null');
    $nullCheckbox.prop('checked', false);
    var rowId = currentRow.find('.open_gis_editor').data('row-id');

    // Unchecks the Ignore checkbox for the current row
    $('input[name=\'insert_ignore_' + rowId + '\']').prop('checked', false);
  });

  /**
   * Handles all current checkboxes for Null; this only takes care of the
   * checkboxes on currently displayed rows as the rows generated by
   * "Continue insertion" are handled in the "Continue insertion" code
   *
   */
  $(document).on('click', 'input.checkbox_null', function () {
    nullify(
    // use hidden fields populated by /table/change
    $(this).siblings('.nullify_code').val(), $(this).closest('tr').find('input:hidden').first().val(), $(this).siblings('.hashed_field').val(), $(this).siblings('.multi_edit').val());
  });

  /**
   * Reset the auto_increment column to 0 when selecting any of the
   * insert options in submit_type-dropdown. Only perform the reset
   * when we are in edit-mode, and not in insert-mode(no previous value
   * available).
   */
  $('select[name="submit_type"]').on('change', function () {
    var thisElemSubmitTypeVal = $(this).val();
    var $table = $('table.insertRowTable');
    var autoIncrementColumn = $table.find('input[name^="auto_increment"]');
    autoIncrementColumn.each(function () {
      var $thisElemAIField = $(this);
      var thisElemName = $thisElemAIField.attr('name');
      var prevValueField = $table.find('input[name="' + thisElemName.replace('auto_increment', 'fields_prev') + '"]');
      var valueField = $table.find('input[name="' + thisElemName.replace('auto_increment', 'fields') + '"]');
      var previousValue = $(prevValueField).val();
      if (previousValue !== undefined) {
        if (thisElemSubmitTypeVal === 'insert' || thisElemSubmitTypeVal === 'insertignore' || thisElemSubmitTypeVal === 'showinsert') {
          $(valueField).val(null);
        } else {
          $(valueField).val(previousValue);
        }
      }
    });
  });

  /**
   * Handle ENTER key when press on Continue insert with field
   */
  $('#insert_rows').on('keypress', function (e) {
    var key = e.which;
    if (key === 13) {
      addNewContinueInsertionFields(e);
    }
  });

  /**
   * Continue Insertion form
   */
  $(document).on('change', '#insert_rows', addNewContinueInsertionFields);
});
function addNewContinueInsertionFields(event) {
  event.preventDefault();
  /**
   * @var columnCount   Number of number of columns table has.
   */
  var columnCount = $('table.insertRowTable').first().find('tr').has('input[name*=\'fields_name\']').length;
  /**
   * @var curr_rows   Number of current insert rows already on page
   */
  var currRows = $('table.insertRowTable').length;
  /**
   * @var target_rows Number of rows the user wants
   */
  var targetRows = $('#insert_rows').val();

  // remove all datepickers
  $('input.datefield, input.datetimefield').each(function () {
    $(this).datepicker('destroy');
  });
  if (currRows < targetRows) {
    var tempIncrementIndex = function () {
      var $thisElement = $(this);
      /**
       * Extract the index from the name attribute for all input/select fields and increment it
       * name is of format funcs[multi_edit][10][<long random string of alphanum chars>]
       */

      /**
       * @var this_name   String containing name of the input/select elements
       */
      var thisName = $thisElement.attr('name');
      /** split {@link thisName} at [10], so we have the parts that can be concatenated later */
      var nameParts = thisName.split(/\[\d+\]/);
      /** extract the [10] from  {@link nameParts} */
      var oldRowIndexString = thisName.match(/\[\d+\]/)[0];
      /** extract 10 - had to split into two steps to accomodate double digits */
      var oldRowIndex = parseInt(oldRowIndexString.match(/\d+/)[0], 10);

      /** calculate next index i.e. 11 */
      newRowIndex = oldRowIndex + 1;
      /** generate the new name i.e. funcs[multi_edit][11][foobarbaz] */
      var newName = nameParts[0] + '[' + newRowIndex + ']' + nameParts[1];
      var hashedField = nameParts[1].match(/\[(.+)\]/)[1];
      $thisElement.attr('name', newName);

      /** If element is select[name*='funcs'], update id */
      if ($thisElement.is('select[name*=\'funcs\']')) {
        var thisId = $thisElement.attr('id');
        var idParts = thisId.split(/_/);
        var oldIdIndex = idParts[1];
        var prevSelectedValue = $('#field_' + oldIdIndex + '_1').val();
        var newIdIndex = parseInt(oldIdIndex) + columnCount;
        var newId = 'field_' + newIdIndex + '_1';
        $thisElement.attr('id', newId);
        $thisElement.find('option').filter(function () {
          return $(this).text() === prevSelectedValue;
        }).attr('selected', 'selected');

        // If salt field is there then update its id.
        var nextSaltInput = $thisElement.parent().next('td').next('td').find('input[name*=\'salt\']');
        if (nextSaltInput.length !== 0) {
          nextSaltInput.attr('id', 'salt_' + newId);
        }
      }

      // handle input text fields and textareas
      if ($thisElement.is('.textfield') || $thisElement.is('.char') || $thisElement.is('textarea')) {
        // do not remove the 'value' attribute for ENUM columns
        // special handling for radio fields after updating ids to unique - see below
        if ($thisElement.closest('tr').find('span.column_type').html() !== 'enum') {
          $thisElement.val($thisElement.closest('tr').find('span.default_value').html());
        }
        $thisElement.off('change')
        // Remove onchange attribute that was placed
        // by /table/change; it refers to the wrong row index
        .attr('onchange', null)
        // Keep these values to be used when the element
        // will change
        .data('hashed_field', hashedField).data('new_row_index', newRowIndex).on('change', function () {
          var $changedElement = $(this);
          verificationsAfterFieldChange($changedElement.data('hashed_field'), $changedElement.data('new_row_index'), $changedElement.closest('tr').find('span.column_type').html());
        });
      }
      if ($thisElement.is('.checkbox_null')) {
        $thisElement
        // this event was bound earlier by jQuery but
        // to the original row, not the cloned one, so unbind()
        .off('click')
        // Keep these values to be used when the element
        // will be clicked
        .data('hashed_field', hashedField).data('new_row_index', newRowIndex).on('click', function () {
          var $changedElement = $(this);
          nullify($changedElement.siblings('.nullify_code').val(), $thisElement.closest('tr').find('input:hidden').first().val(), $changedElement.data('hashed_field'), '[multi_edit][' + $changedElement.data('new_row_index') + ']');
        });
      }
    };
    var tempReplaceAnchor = function () {
      var $anchor = $(this);
      var newValue = 'rownumber=' + newRowIndex;
      // needs improvement in case something else inside
      // the href contains this pattern
      var newHref = $anchor.attr('href').replace(/rownumber=\d+/, newValue);
      $anchor.attr('href', newHref);
    };
    var restoreValue = function () {
      if ($(this).closest('tr').find('span.column_type').html() === 'enum') {
        if ($(this).val() === $checkedValue) {
          $(this).prop('checked', true);
        } else {
          $(this).prop('checked', false);
        }
      }
    };
    while (currRows < targetRows) {
      /**
       * @var $last_row    Object referring to the last row
       */
      var $lastRow = $('#insertForm').find('.insertRowTable').last();

      // need to access this at more than one level
      // (also needs improvement because it should be calculated
      //  just once per cloned row, not once per column)
      var newRowIndex = 0;
      var $checkedValue = $lastRow.find('input:checked').val();

      // Clone the insert tables
      $lastRow.clone(true, true).insertBefore('#actions_panel').find('input[name*=multi_edit],select[name*=multi_edit],textarea[name*=multi_edit]').each(tempIncrementIndex).end().find('.foreign_values_anchor').each(tempReplaceAnchor);
      var $oldRow = $lastRow.find('.textfield');
      $oldRow.each(restoreValue);

      // set the value of enum field of new row to default
      var $newRow = $('#insertForm').find('.insertRowTable').last();
      $newRow.find('.textfield').each(function () {
        if ($(this).closest('tr').find('span.column_type').html() === 'enum') {
          if ($(this).val() === $(this).closest('tr').find('span.default_value').html()) {
            $(this).prop('checked', true);
          } else {
            $(this).prop('checked', false);
          }
        }
      });

      // Insert/Clone the ignore checkboxes
      if (currRows === 1) {
        $('<input id="insert_ignore_1" type="checkbox" name="insert_ignore_1" checked="checked">').insertBefore($('table.insertRowTable').last()).after('<label for="insert_ignore_1">' + Messages.strIgnore + '</label>');
      } else {
        /**
         * @var $last_checkbox   Object reference to the last checkbox in #insertForm
         */
        var $lastCheckbox = $('#insertForm').children('input:checkbox').last();

        /** name of {@link $lastCheckbox} */
        var lastCheckboxName = $lastCheckbox.attr('name');
        /** index of {@link $lastCheckbox} */
        var lastCheckboxIndex = parseInt(lastCheckboxName.match(/\d+/), 10);
        /** name of new {@link $lastCheckbox} */
        var newName = lastCheckboxName.replace(/\d+/, lastCheckboxIndex + 1);
        $('<br><div class="clearfloat"></div>').insertBefore($('table.insertRowTable').last());
        $lastCheckbox.clone().attr({
          'id': newName,
          'name': newName
        }).prop('checked', true).insertBefore($('table.insertRowTable').last());
        $('label[for^=insert_ignore]').last().clone().attr('for', newName).insertBefore($('table.insertRowTable').last());
        $('<br>').insertBefore($('table.insertRowTable').last());
      }
      currRows++;
    }
    // recompute tabindex for text fields and other controls at footer;
    // IMO it's not really important to handle the tabindex for
    // function and Null
    var tabIndex = 0;
    $('.textfield, .char, textarea').each(function () {
      tabIndex++;
      $(this).attr('tabindex', tabIndex);
      // update the IDs of textfields to ensure that they are unique
      $(this).attr('id', 'field_' + tabIndex + '_3');
    });
    $('.control_at_footer').each(function () {
      tabIndex++;
      $(this).attr('tabindex', tabIndex);
    });
  } else if (currRows > targetRows) {
    /**
     * Displays alert if data loss possible on decrease
     * of rows.
     */
    var checkLock = jQuery.isEmptyObject(AJAX.lockedTargets);
    if (checkLock || confirm(Messages.strConfirmRowChange) === true) {
      while (currRows > targetRows) {
        $('input[id^=insert_ignore]').last().nextUntil('fieldset').addBack().remove();
        currRows--;
      }
    } else {
      document.getElementById('insert_rows').value = currRows;
    }
  }
  // Add all the required datepickers back
  Functions.addDateTimePicker();
}

// eslint-disable-next-line no-unused-vars
function changeValueFieldType(elem, searchIndex) {
  var fieldsValue = $('input#fieldID_' + searchIndex);
  if (0 === fieldsValue.size()) {
    return;
  }
  var type = $(elem).val();
  if ('LIKE' === type || 'LIKE %...%' === type || 'NOT LIKE' === type || 'NOT LIKE %...%' === type) {
    $('#fieldID_' + searchIndex).data('data-skip-validators', true);
    return;
  } else {
    $('#fieldID_' + searchIndex).data('data-skip-validators', false);
  }
  if ('IN (...)' === type || 'NOT IN (...)' === type || 'BETWEEN' === type || 'NOT BETWEEN' === type) {
    $('#fieldID_' + searchIndex).prop('multiple', true);
  } else {
    $('#fieldID_' + searchIndex).prop('multiple', false);
  }
}