import dayjs from 'dayjs';
import utc from 'dayjs/plugin/utc';

dayjs.extend(utc);

const defaultHourHeight = 63;
const defaultHourWidth = 82;

export let oneHourHeight = defaultHourHeight;
export let oneHourWidth = defaultHourWidth;

export const setNewHourHeight = (height = defaultHourHeight) => {
  oneHourHeight = Math.max(height, defaultHourHeight);
};

export const setNewHourWidth = (width = defaultHourWidth) => {
  oneHourWidth = Math.max(width, defaultHourWidth);
};

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

export const calculateMarginFromHours = (h: number) => {
  return h * oneHourHeight + 6;
};

export const calculateMinutesFromHeight = (divHeight: number) => {
  return (60 * divHeight) / oneHourHeight;
};

export const calculateMarginLeftFromMinutes = (minutes: number) => {
  return (minutes / 60) * oneHourWidth;
};

export const calculateMarginLeftFromHours = (h: number) => {
  return h * oneHourWidth;
};

export const calculateMinutesFromWidth = (width: number) => {
  return (60 * width) / oneHourWidth;
};

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