import { CustomFieldValue } from '@atlassian/forge-graphql-types';
import { isEqual, sortBy } from 'lodash';

export const isCustomFieldValueEqual = (
  value1: CustomFieldValue,
  value2: CustomFieldValue,
): boolean => {
  // Case: multi_select values are an array of option UUID strings
  // check for array equality, ignoring order
  if (Array.isArray(value1) && Array.isArray(value2)) {
    if (value1.length !== value2.length) {
      return false;
    }

    return isEqual(sortBy(value1), sortBy(value2));
  }

  // Case: empty array values should be treated equal to null or undefined value
  if (Array.isArray(value1) && !value1.length) {
    return value2 === undefined || value2 === null;
  }
  if (Array.isArray(value2) && !value2.length) {
    return value1 === undefined || value1 === null;
  }

  // Case: both values are the same non-array type
  // note: typeof `null` === typeof `Array` === 'object' so we perform this check after previous one
  if (typeof value1 === typeof value2) {
    return value1 === value2;
  }

  // Case: mixed types, check boolean equality
  return !!value1 === !!value2;
};

export const hasValue = (value: CustomFieldValue): boolean =>
  value !== undefined && value !== null;