import { mergeProps } from './util'


export const globalDefaults = {

  titleRangeSeparator: ' \u2013 ', // en dash
  monthYearFormat: 'MMMM YYYY', // required for en. other locales rely on datepicker computable option

  defaultTimedEventDuration: '02:00:00',
  defaultAllDayEventDuration: { days: 1 },
  forceEventDuration: false,
  nextDayThreshold: '09:00:00', // 9am

  // display
  columnHeader: true,
  defaultView: 'month',
  aspectRatio: 1.35,
  header: {
    left: 'title',
    center: '',
    right: 'today prev,next'
  },
  weekends: true,
  weekNumbers: false,

  weekNumberTitle: 'W',
  weekNumberCalculation: 'local',

  // editable: false,

  // nowIndicator: false,

  scrollTime: '06:00:00',
  minTime: '00:00:00',
  maxTime: '24:00:00',
  showNonCurrentDates: true,

  // event ajax
  lazyFetching: true,
  startParam: 'start',
  endParam: 'end',
  timezoneParam: 'timezone',

  timezone: false,

  // allDayDefault: undefined,

  // locale
  locale: null,
  isRTL: false,
  buttonText: {
    prev: 'prev',
    next: 'next',
    prevYear: 'prev year',
    nextYear: 'next year',
    year: 'year', // TODO: locale files need to specify this
    today: 'today',
    month: 'month',
    week: 'week',
    day: 'day'
  },
  // buttonIcons: null,

  allDayText: 'all-day',

  // allows setting a min-height to the event segment to prevent short events overlapping each other
  agendaEventMinHeight: 0,

  // jquery-ui theming
  theme: false,
  // themeButtonIcons: null,

  // eventResizableFromStart: false,
  dragOpacity: .75,
  dragRevertDuration: 500,
  dragScroll: true,

  // selectable: false,
  unselectAuto: true,
  // selectMinDistance: 0,

  dropAccept: '*',

  eventOrder: 'title',
  // eventRenderWait: null,

  eventLimit: false,
  eventLimitText: 'more',
  eventLimitClick: 'popover',
  dayPopoverFormat: 'LL',

  handleWindowResize: true,
  windowResizeDelay: 100, // milliseconds before an updateSize happens

  longPressDelay: 1000

}


export const englishDefaults = { // used by locale.js
  dayPopoverFormat: 'dddd, MMMM D'
}


export const rtlDefaults = { // right-to-left defaults
  header: { // TODO: smarter solution (first/center/last ?)
    left: 'next,prev today',
    center: '',
    right: 'title'
  },
  buttonIcons: {
    prev: 'right-single-arrow',
    next: 'left-single-arrow',
    prevYear: 'right-double-arrow',
    nextYear: 'left-double-arrow'
  },
  themeButtonIcons: {
    prev: 'circle-triangle-e',
    next: 'circle-triangle-w',
    nextYear: 'seek-prev',
    prevYear: 'seek-next'
  }
}


let complexOptions = [ // names of options that are objects whose properties should be combined
  'header',
  'footer',
  'buttonText',
  'buttonIcons',
  'themeButtonIcons'
]


// Merges an array of option objects into a single object
export function mergeOptions(optionObjs) {
  return mergeProps(optionObjs, complexOptions)
}