import dayjs from 'dayjs';
import utc from 'dayjs/plugin/utc';
import { oneHourHeight } from '../../SACalendar/utils/timeUtils';

dayjs.extend(utc);

const listToTree = (arr = []) => {
  let map = {},
    node,
    res = [],
    i;
  for (i = 0; i < arr.length; i += 1) {
    map[arr[i].id] = i;
    arr[i].children = [];
  }
  for (i = 0; i < arr.length; i += 1) {
    node = arr[i];
    if (node.parentSpaceId !== null) {
      arr[map[node.parentSpaceId]].children.push(node);
    } else {
      res.push(node);
    }
  }
  return res;
};

export function toTree(data) {
  const arr = data.map((x) => {
    let newX = { ...x };
    newX.children = [];
    return newX;
  });

  return listToTree(arr);
}

export const calculateMarginFromMinutes = (minutes: number) =>
  (minutes / 60) * oneHourHeight;

export const generateSlots = (slots: any) =>
  slots.map((slot) => ({
    ...slot,
    startDate: dayjs(slot.startDate)
      .set('month', dayjs().get('month'))
      .set('day', dayjs().get('day'))
      .format(),
    endDate: dayjs(slot.endDate)
      .set('month', dayjs().get('month'))
      .set('day', dayjs().get('day'))
      .format(),
  }));

export const getHours = (startTime: string, endTime: string) =>
  dayjs.utc(startTime).format('hh:mm a') +
  ' - ' +
  dayjs.utc(endTime).format('hh:mm a');

export const getWeeklyEventHours = (startTime: string, endTime: string) => {
  let duration = dayjs.utc(endTime).diff(dayjs.utc(startTime), 'minute');
  if (duration < 0) duration += 1440; // minutes in day (60 * 24)
  duration = Number(Number(duration / 60).toFixed(2)); // duration in hours

  return dayjs.utc(startTime).format('hh:mma') + ' ' + duration + 'h';
};