polestar-ui-kit/lib/Pagination/helpers/calculate.js

## Install

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _PageInfo = _interopRequireDefault(require("../constants/PageInfo"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _default = function _default(_currentPage, _totalCount, _pageSize, _pageGroupSize) {
  var totalCount = _totalCount;
  var pageSize = _pageSize === _PageInfo["default"].ALL ? -1 : _pageSize || 10;
  var pageGroupSize = _pageGroupSize || 5;
  var isEmpty = totalCount === 0;

  if (_pageSize === _PageInfo["default"].ALL) {
    return {
      totalCount: totalCount,
      pageSize: pageSize,
      pageGroupSize: pageGroupSize,
      pageCount: 1,
      pageGroupCount: 1,
      currentPage: 1,
      currentPageGroup: 1,
      beginRow: 1,
      endRow: totalCount,
      beginPage: 1,
      endPage: 1,
      limit: 0,
      isFirstPage: true,
      isLastPage: true,
      isFirstPageGroup: true,
      isLastPageGroup: true,
      isEmpty: isEmpty
    };
  }

  var pageCount = Math.floor(totalCount / pageSize) + (totalCount % pageSize === 0 ? 0 : 1);
  var currentPage = _currentPage <= 0 ? 1 : _currentPage;

  if (currentPage > pageCount) {
    currentPage = pageCount;
  }

  var pageGroupCount = Math.floor(pageCount / pageGroupSize) + (pageCount % pageGroupSize === 0 ? 0 : 1);
  var currentPageGroup = Math.floor(currentPage / pageGroupSize) + (currentPage % pageGroupSize === 0 ? 0 : 1);
  var beginRow = !isEmpty ? pageSize * (currentPage - 1) + 1 : 0;
  var endRow = currentPage === pageCount ? totalCount : pageSize * currentPage;
  var beginPage = !isEmpty ? pageGroupSize * currentPageGroup - (pageGroupSize - 1) : 0;
  var endPage = beginPage + (pageGroupSize - 1) < pageCount ? beginPage + (pageGroupSize - 1) : pageCount;
  var isFirstPage = currentPage === 1;
  var isLastPage = currentPage === pageCount;
  var isFirstPageGroup = currentPageGroup === 1;
  var isLastPageGroup = currentPageGroup === pageGroupCount;
  var limit = beginRow - 1;

  if (limit < 0) {
    limit = 0;
  }

  return {
    totalCount: totalCount,
    pageSize: pageSize,
    pageGroupSize: pageGroupSize,
    pageCount: pageCount,
    pageGroupCount: pageGroupCount,
    currentPage: currentPage,
    currentPageGroup: currentPageGroup,
    beginRow: beginRow,
    endRow: endRow,
    beginPage: beginPage,
    endPage: endPage,
    limit: limit,
    isFirstPage: isFirstPage,
    isLastPage: isLastPage,
    isFirstPageGroup: isFirstPageGroup,
    isLastPageGroup: isLastPageGroup,
    isEmpty: isEmpty
  };
};

exports["default"] = _default;