function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
import dayjs from 'dayjs';

// 定义输入数据的接口

// 定义输出数据的接口

export function formatDateRanges(list) {
  var result = [];
  var currentGroup = null;
  list.forEach(function (item, index) {
    // Convert string dates using dayjs
    var currentStartDate = dayjs(item.start_date);
    var currentEndDate = dayjs(item.end_date);
    var currentTotal = item.total;
    var currentNum = item.num;
    if (!currentGroup) {
      // Start a new group
      currentGroup = _objectSpread(_objectSpread({}, item), {}, {
        start_date: currentStartDate.format('YYYY-MM-DD'),
        end_date: currentEndDate.format('YYYY-MM-DD'),
        total: currentTotal,
        num: currentNum
      });
    } else {
      var prevEndDate = dayjs(currentGroup.end_date);

      // Check if current item can be merged with current group
      if (currentTotal === currentGroup.total && prevEndDate.isSame(currentStartDate, 'day')) {
        // Update end date and add up num
        currentGroup.end_date = currentEndDate.format('YYYY-MM-DD');
        currentGroup.num += currentNum;
      } else {
        // Push current group and start a new one
        result.push(currentGroup);
        currentGroup = _objectSpread(_objectSpread({}, item), {}, {
          start_date: currentStartDate.format('YYYY-MM-DD'),
          end_date: currentEndDate.format('YYYY-MM-DD'),
          total: currentTotal,
          num: currentNum
        });
      }
    }

    // Push the last group
    if (index === list.length - 1 && currentGroup) {
      result.push(currentGroup);
    }
  });
  return result;
}