import type {
  RPGDate,
  RPGDateOrder,
} from "@/models/Date"
import { useUrlSearchParams } from "@vueuse/core"
import { defineStore } from "pinia"
import { computed, ref, type ComputedRef } from "vue"
import type { Calendar } from "~/models/CalendarConfig"
import type { CalendarEvent } from "~/models/CalendarEvent"
import type { CalendarMonth } from "~/models/CalendarMonth"
import type { Category } from "~/models/Category"

type CalendarViewType = "month" | "year" | "decade" | "century"

type CalendarCurrentConfig = {
  viewType: CalendarViewType
}

type CalendarCurrentDate = {
  currentDay: ComputedRef<number>
  currentMonth: ComputedRef<number>
  currentMonthName: ComputedRef<string>
  currentYear: ComputedRef<number>
  currentDateTitle: ComputedRef<string>
}

type DateDirectionTranslationKeys = {
  days: string
  months: string
  years: string
  yearsAndMonths: string
}

export const useCalendar = defineStore("calendar", () => {
  const { t } = useI18n()

  /**
   * Static calendar config
   */
  const currentConfig = ref<CalendarCurrentConfig>({
    viewType: "month"
  })
  const viewTypeOptions = new Set<CalendarViewType>([
    "month",
    "year"
  ])

  const activeCalendar = ref<{ id: number; name: string; today: RPGDate} | null>(null)

  /**
   * Month list (queried from API)
   */
  const months = ref<CalendarMonth[]>([])

  function setActiveCalendar(calendarData: Calendar, categoryData: Category[]) {
    try {
      if (!calendarData.id) return

      activeCalendar.value = {
        id: calendarData.id,
        name: calendarData.name,
        today: calendarData.today
      }

      setDefaultDate(activeCalendar.value.today)
      selectDate(activeCalendar.value.today)

      if (!params.day) {
        params.day = defaultDate.value.day.toString()
      }
      if (!params.month) {
        params.month = defaultDate.value.month.toString()
      }
      if (!params.year) {
        params.year = defaultDate.value.year.toString()
      }

      months.value = calendarData.months

      baseEvents.value = calendarData.events
      categories.value = categoryData
    } catch (err) {
      console.log(err)
    }
  }

  const params = useUrlSearchParams("history", {
    write: false
  })

  /**
   * Sorted month data using the raw months
   */
  const sortedMonths = computed<CalendarMonth[]>(() => months.value.sort((a, b) => a.position - b.position))
  const monthsPerYear = computed<number>(() => months.value.length)
  const daysPerYear = computed<number>(() => months.value.reduce((acc, o) => acc + o.days, 0))

  // Default date settings (current day in the world)
  // The base setting is the first day / month of year 0
  const defaultDay = ref<number>(1)
  const defaultMonth = ref<number>(0)
  const defaultYear = ref<number>(0)

  // Object representation
  const defaultDate = computed<RPGDate>(() => {
    return {
      day: defaultDay.value,
      month: defaultMonth.value,
      year: defaultYear.value
    }
  })

  function setDefaultDate(date: RPGDate): void {
    defaultDay.value = date.day
    defaultMonth.value = date.month
    defaultYear.value = date.year
  }

  const currentDay = computed<number>(() => {
    return Number(params.day)
  })

  const currentMonth = computed<number>(() => {
    return Number(params.month)
  })
  const currentMonthData = computed<CalendarMonth>(() => {
    return sortedMonths.value[currentMonth.value]
  })
  // Gets the label from currentMonth index
  const currentMonthName = computed<string>(() => getMonthName(currentMonth.value))

  const currentYear = computed<number>(() => {
    return Number(params.year)
  })

  const currentDateTitle = computed<string>(() => {
    switch (currentConfig.value.viewType) {
      case "month":
        return getFormattedDateTitle({
          day: currentDate.currentDay.value,
          month: currentDate.currentMonth.value,
          year: currentDate.currentYear.value,
        })

      case "year":
        return `Année ${currentYear.value}`

      case "decade":
        return `Années ${currentYear.value} - ${currentYear.value + 10}`

      case "century":
        return `Années ${currentYear.value} - ${currentYear.value + 100}`

      default:
        return "Date inconnue"
    }
  })

  // Create base config
  const currentDate: CalendarCurrentDate = {
    currentDay,
    currentMonth,
    currentMonthName,
    currentYear,
    currentDateTitle
  }

  const currentRPGDate = computed<RPGDate>(() => {
    return {
      day: currentDay.value,
      month: currentMonth.value,
      year: currentYear.value,
    }
  })

  const selectedDate = ref<RPGDate>({...defaultDate.value})

  /**
   * Check whether the current viewType is active
   */
  const isCurrentScreenActive = computed<boolean>(() => {
    switch (currentConfig.value.viewType) {
      case "month":
        return (
          defaultDate.value.month === currentDate.currentMonth.value &&
          defaultDate.value.year === currentDate.currentYear.value
        )

      case "year":
      case "decade":
      case "century":
        return defaultDate.value.year === currentDate.currentYear.value

      default:
        return false
    }
  })

  /**
   * Moves the current date forward one month
   */
  function incrementViewMonth(): void {
    let newValue = Number(params.month) + 1

    // If the new value would exceed the max number of month per year
    if (newValue >= monthsPerYear.value) {
      newValue = 0
      // Increment the year
      incrementViewYear()
    }

    params.month = newValue.toString()
  }

  /**
   * Moves the current date backward one month
   */
  function decrementViewMonth(): void {
    let newValue = Number(params.month) - 1

    // If the new value would go below 0
    if (newValue < 0) {
      newValue = monthsPerYear.value - 1
      // Decrement the year
      decrementViewYear()
    }

    params.month = newValue.toString()
  }

  /**
   * Get the previous month number of the calendar view
   *
   * @param monthNumber Initial month
   * @returns The previous month number in the year
   */
  function getPreviousViewMonth(monthNumber: number): number {
    const target: number = monthNumber - 1

    if (target < 0) {
      return monthsPerYear.value - 1
    }

    return target
  }

  /**
   * Get the following month number of the calendar view
   *
   * @param monthNumber Initial month
   * @returns The next month number in the year
   */
  function getNextViewMonth(monthNumber: number): number {
    const target: number = monthNumber + 1

    if (target + 1 > monthsPerYear.value) {
      return 0
    }

    return target
  }

  /**
   * Moves the current view to a particular month
   */
  function setViewMonth(target: number): void {
    // If the target is outside the month bounds
    if (target < 0 || target >= monthsPerYear.value) {
      return
    }

    params.month = target.toString()
  }

  /**
   * Moves the current view forward one year
   */
  function incrementViewYear(inc: number = 1): void {
    const newValue = Number(params.year) + inc

    params.year = newValue.toString()
  }

  /**
   * Moves the current view backward one year
   */
  function decrementViewYear(inc: number = 1): void {
    const newValue = Number(params.year) - inc

    params.year = newValue.toString()
  }

  /**
   * Get the formatted month name given its index
   *
   * @param monthNumber Index of the month
   * @returns Formatted month name
   */
  function getMonthName(monthNumber: number): string {
    const index = Number(monthNumber)
    if (sortedMonths.value[index]) {
      return sortedMonths.value[index].name
    }

    return ""
  }

  /**
   * State for advanced search modal
   */
  const isAdvancedSearchOpen = ref<boolean>(false)

  function revealAdvancedSearch() {
    isAdvancedSearchOpen.value = true
  }

  /**
   * Switches the active viewType
   *
   * @param viewType Target viewType
   */
  function setViewType(viewType: CalendarViewType): void {
    currentConfig.value.viewType = viewType
  }

  /**
   * FORMATTING
   */
  /**
   * Gets the formatted viewType title
   *
   * @param viewType Target viewType
   * @returns Formatted mode title
   */
  function getViewTypeTitle(viewType: CalendarViewType): string {
    switch (viewType) {
      case "year":
        return t("entity.calendar.years.nameSingular")

      case "decade":
        return "Décennie"

      case "century":
        return "Siècle"

      case "month":
      default:
        return t("entity.calendar.months.nameSingular")
    }
  }

  /**
   * From a RPGDate, returns the legible date title
   *
   * @param date Date target
   * @param showNumber Should the date show the day number
   * @returns Formatted date name
   */
  function getFormattedDateTitle(date: RPGDate, showNumber?: boolean): string {
    if (showNumber) {
      return `${date.day} ${getMonthName(date.month)} ${date.year}`
    }

    return `${getMonthName(date.month)} ${date.year}`
  }

  /**
   * DATE JUMPS & SELECTION
   */
  /**
   * Jumps the calendar to the given date
   *
   * @param date Target date
   */
  function jumpToDate(date: RPGDate): void {
    params.day = date.day.toString()
    params.month = date.month.toString()
    params.year = date.year.toString()
    selectDate(date)
  }

  /**
   * Jump the calendar to the default date
   */
  function jumpToDefaultDate(): void {
    jumpToDate(defaultDate.value)
  }

  /**
   * Jump the calendar to the default date
   */
  function selectDate(date: RPGDate): void {
    selectedDate.value = date
  }

  /**
   * DATE OPERATIONS
   *
   * Used to convert dates, sort them and compare them
   */
  /**
   * Converts a RPGDate to its equivalent in days
   *
   * @param dateToConvert The date object
   * @returns How many days does it represent
   */
  function convertDateToDays(dateToConvert: RPGDate): number {
    let numberOfDays: number = dateToConvert.day

    // Get only the remaining months on the year
    const remainingMonths = sortedMonths.value.filter((m) => dateToConvert.month >= m.position)
    // From remaining months, reduce their days value
    const monthDaysToAdd = remainingMonths.reduce((a, b) => {
      return a + b.days
    }, 0)

    numberOfDays = numberOfDays + monthDaysToAdd
    numberOfDays = numberOfDays + dateToConvert.year * daysPerYear.value

    return numberOfDays - 1
  }

  /**
   * From two dates, get the difference in days between them
   * @param baseDate The base date
   * @param relativeDate The year to compare it to
   * @returns The number of days separating the two dates (both positive and negative numbers)
   */
  function getDifferenceInDays(baseDate: RPGDate, relativeDate: RPGDate): number {
    return convertDateToDays(relativeDate) - convertDateToDays(baseDate)
  }

  /**
   * Check whether two dates are identical
   *
   * @param date1 First date
   * @param date2 Second date
   * @returns True if the dates are identical
   */
  function areDatesIdentical(date1: RPGDate, date2: RPGDate): boolean {
    return getDifferenceInDays({ ...date1 }, { ...date2 }) === 0
  }

  /**
   * Compare dates (used for array sorting)
   *
   * @param date1 First date
   * @param date2 Second date
   * @returns 1 means the first date comes before the second, -1 means the second comes before the first, and 0 if they're identical
   */
  function compareDates(a: RPGDate, b: RPGDate, order: RPGDateOrder = "desc"): number {
    // Reverses the order if specified
    const orderFactor: number = order === "desc" ? 1 : -1

    // If somehow one of the date isn't available
    if (!b) {
      return -1 * orderFactor
    }
    if (!a) {
      return 1 * orderFactor
    }

    // Compare years
    if (a.year < b.year) return -1 * orderFactor
    if (a.year > b.year) return 1 * orderFactor

    // Compare months
    if (a.month < b.month) return -1 * orderFactor
    if (a.month > b.month) return 1 * orderFactor

    // Compare days
    if (a.day < b.day) return -1 * orderFactor
    if (a.day > b.day) return 1 * orderFactor

    return 0
  }

  /**
   * From two dates, gives information on how many years, months and days it has been / will be between them
   *
   * @param baseDate The base date
   * @param relativeDate The year to compare it to
   * @returns A string with info on how the relative date differs to the base date
   */
  function getRelativeString(
    baseDate: RPGDate,
    relativeDate: RPGDate,
    formatting: "compact" | "complex" = "complex"
  ): string {
    const differenceInDays: number = getDifferenceInDays(baseDate, relativeDate)
    let output: string = ""
    let direction: "past" | "present" | "future" = "present"
    const futureKeys: DateDirectionTranslationKeys = {
      days: "xDaysNext",
      months: "xMonthsNext",
      years: "xYearsNext",
      yearsAndMonths: "xYearsAndMonthsNext",
    }
    const futureKeysCompact: DateDirectionTranslationKeys = {
      days: "xDaysNextCompact",
      months: "xMonthsNextCompact",
      years: "xYearsNextCompact",
      yearsAndMonths: "xYearsAndMonthsNextCompact",
    }
    const pastKeys: DateDirectionTranslationKeys = {
      days: "xDaysAgo",
      months: "xMonthsAgo",
      years: "xYearsAgo",
      yearsAndMonths: "xYearsAndMonthsAgo",
    }
    const pastKeysCompact: DateDirectionTranslationKeys = {
      days: "xDaysAgoCompact",
      months: "xMonthsAgoCompact",
      years: "xYearsAgoCompact",
      yearsAndMonths: "xYearsAndMonthsAgoCompact",
    }
    let directionKeys: DateDirectionTranslationKeys = pastKeys

    // Check whether it's a past or future date
    if (differenceInDays > 0) {
      direction = "future"
    } else if (differenceInDays < 0) {
      direction = "past"
    }

    if (formatting === "complex") {
      // Handle if it's the same date
      if (direction === "present") {
        return t("entity.calendar.date.today")
      }
      if (differenceInDays === -2) {
        return t("entity.calendar.date.beforeYesterday")
      }
      if (differenceInDays === -1) {
        return t("entity.calendar.date.yesterday")
      }
      if (differenceInDays === 1) {
        return t("entity.calendar.date.tomorrow")
      }
      if (differenceInDays === 2) {
        return t("entity.calendar.date.afterTomorrow")
      }

      // Get relevant prefix for the string
      if (direction === "future") {
        directionKeys = futureKeys
      } else {
        directionKeys = pastKeys
      }
    } else {
      // Get relevant prefix for the string (without the prefix)
      if (direction === "future") {
        directionKeys = futureKeysCompact
      } else {
        directionKeys = pastKeysCompact
      }
    }

    const isSameMonth = baseDate.month === relativeDate.month
    const isSameYear = baseDate.year === relativeDate.year

    // At this point, we are beyond simple scenarios and must calculate the distance accurately

    // Get which date should come first
    let ancientDate: RPGDate
    let futureDate: RPGDate

    if (direction === "future") {
      ancientDate = baseDate
      futureDate = relativeDate
    } else {
      ancientDate = relativeDate
      futureDate = baseDate
    }

    // The pivot point that will help proceed towards the relativeDate
    const datePivot: RPGDate = { ...ancientDate }
    // The accumulator that will hold the distance between the two dates
    const dateAcc: RPGDate = { day: 0, month: 0, year: 0 }

    // If we are on the same month / year during acceleration, just don't rev up
    if (isSameMonth && isSameYear) {
      dateAcc.day = futureDate.day - datePivot.day

      output = t(`entity.calendar.date.${directionKeys.days}`, { days: dateAcc.day })

      return output
    }

    // If we are on the same year during acceleration, just don't rev up the next month, it might overflow to the next year
    else if (isSameYear) {
      dateAcc.month = futureDate.month - datePivot.month

      output = t(`entity.calendar.date.${directionKeys.months}`, { months: dateAcc.month })

      return output
    }

    // Else, we need to accelerate and decelerate
    else {
      // First, get all the remaining days in the current month
      const currentMonth = sortedMonths.value[datePivot.month]
      dateAcc.day = currentMonth.days - datePivot.day
      if (direction === "future") {
        datePivot.month = getNextViewMonth(datePivot.month)
      } else {
        datePivot.month = getPreviousViewMonth(datePivot.month)
      }
      datePivot.day = 1

      // Then, get the remaining months in the year
      const remainingMonthsStart = sortedMonths.value.filter((m) => datePivot.month < m.position )
      if (direction === "future") {
        dateAcc.month = remainingMonthsStart.length + 1
      } else {
        dateAcc.month = remainingMonthsStart.length - 1
      }
      datePivot.month = 0

      // Then, Accelerate through years
      dateAcc.month = dateAcc.month + ((futureDate.year - datePivot.year) - 1) * monthsPerYear.value
      datePivot.year = futureDate.year

      // Once we reached the relativeYear, decelerate and get through the extra months
      const remainingMonthsEnd = futureDate.month
      dateAcc.month = dateAcc.month + remainingMonthsEnd
      datePivot.month = futureDate.month

      // Then at the destination month, decelerate to get the rest of the days
      dateAcc.day = dateAcc.day + futureDate.day
      datePivot.day = futureDate.day

      const computedYear = Math.trunc(dateAcc.month / monthsPerYear.value)
      const remainderMonths = dateAcc.month % monthsPerYear.value

      if (computedYear >= 1 && remainderMonths) {
        output = t(`entity.calendar.date.${directionKeys.yearsAndMonths}`, { years: computedYear, months: remainderMonths })
      }
      else if (computedYear >= 1 && !remainderMonths) {
        output = t(`entity.calendar.date.${directionKeys.years}`, { years: computedYear })
      }
      else {
        output = t(`entity.calendar.date.${directionKeys.months}`, { months: remainderMonths })
      }

      return output
    }
  }

  const baseEvents = ref<CalendarEvent[]>([])
  const categories = ref<Category[]>([])

  // Order base events by dates
  const allEvents = computed<CalendarEvent[]>(() => [...baseEvents.value].sort((a, b) => compareDates(a.startDate, b.startDate, "desc")))

  // Gets all current event in its default state
  const currentEvents = ref<CalendarEvent[]>([])

  // Watch for currentDate or events' list changes
  // This is deep because we're watching an array, and changes need to trigger and mutations like .push and .splice
  watch([currentRPGDate, allEvents], () => {
    currentEvents.value = computeCurrentEvents()
  }, { deep: true, immediate: true })

  /**
   * Determines if the event can appear in the front end
   *
   * This function takes into consideration the viewType of the calendar config
   *
   * @param event The event to analyze
   * @returns Whether the event should appear in the current view
   */
  function shouldEventBeDisplayed(event: CalendarEvent): boolean {
    const isEventOnCurrentScreen =
      (event.startDate.year === currentRPGDate.value.year &&
        event.startDate.month === currentRPGDate.value.month) ||
      (event.endDate &&
        event.endDate.year === currentRPGDate.value.year &&
        event.endDate.month === currentRPGDate.value.month)

    switch (currentConfig.value.viewType) {
      case "month":
        return !!isEventOnCurrentScreen

      case "year":
        return event.startDate.year === currentRPGDate.value.year

      case "decade":
        return (
          event.startDate.year >= currentRPGDate.value.year &&
          event.startDate.year <= currentRPGDate.value.year + 10
        )

      case "century":
        return (
          event.startDate.year >= currentRPGDate.value.year &&
          event.startDate.year <= currentRPGDate.value.year + 100
        )

      default:
        return false
    }
  }

  /**
   * Fetches all the current events for the current view
   *
   * @returns A list of events that can appear in the current view
   */
  function computeCurrentEvents(): CalendarEvent[] {
    return [...allEvents.value].filter((event) => shouldEventBeDisplayed(event))
  }

  /**
   * From a base event, gets the next or previous one in the timeline
   *
   * @param event The event at a given position in the data
   * @param position Whether we should get the next or previous event
   * @returns The next event in chronological order
   */
  function getRelativeEventFromEvent(
    event: CalendarEvent,
    position: "next" | "prev" = "next",
    initialIsEnd: boolean = false
  ): { event: CalendarEvent; targetDate: RPGDate } {
    let dateToParse: RPGDate // Day value of the date that the user interacted with

    if (initialIsEnd && event.endDate) {
      dateToParse = event.endDate
    } else {
      dateToParse = event.startDate
    }

    return getRelativeEventFromDate(dateToParse, position)
  }

  /**
   * From a date, gets the next or previous event in the timeline
   *
   * @param date The starting date from which to get the next event
   * @param position Whether we should get the next or previous event
   * @returns The next event in chronological order
   */
  function getRelativeEventFromDate(
    date: RPGDate,
    position: "next" | "prev" = "next"
  ): { event: CalendarEvent; targetDate: RPGDate } {
    const pivotValue = convertDateToDays(date)
    let t: { eventData: CalendarEvent; distance: number; targetKey: "startDate" | "endDate" }[] = []

    // Loop over all event once to convert the structure to a usable one
    for (let i = 0; i < allEvents.value.length; i++) {
      const e: CalendarEvent = allEvents.value[i]

      // Estimate distance from pivot
      const startDateDays: number = convertDateToDays(e.startDate)
      const startDistance: number = startDateDays - pivotValue

      // Push startDate to comparator array
      t.push({
        eventData: e,
        distance: startDistance,
        targetKey: "startDate"
      })

      // Check the same things for endDate
      if (e.endDate) {
        const endDateDays: number = convertDateToDays(e.endDate)
        const endDistance: number = endDateDays - pivotValue

        // Push optional endDate to comparator array
        t.push({
          eventData: e,
          distance: endDistance,
          targetKey: "endDate"
        })
      }
    }

    // Based on the direction, either ignore negative distance (past) or positive distance (future)
    t = t.filter((i) => {
      return position === "next" ? i.distance > 0 : i.distance < 0
    })

    if (!t.length) {
      throw new Error(
        "Aucun évènement suivant ou précédent trouvé ; Peut-être l'évènement se situe au début ou à la fin du calendrier ?"
      )
    }

    // Get event with remaining minimum distance
    const closestEvent = t.reduce((a, b) => {
      return Math.abs(b.distance) < Math.abs(a.distance) ? b : a
    })

    return {
      event: closestEvent.eventData,
      targetDate: closestEvent.eventData[closestEvent.targetKey]!
    }
  }

  /**
   * State for event modal edition
   */
  const isEditEventModalOpen = ref<boolean>(false)

  function revealEditEventModal() {
    isEditEventModalOpen.value = true
  }

  /**
   * State for event modal edition
   */
  const isDeleteEventModalOpen = ref<boolean>(false)

  function revealDeleteEventModal() {
    isDeleteEventModalOpen.value = true
  }

  /**
   * EVENT CREATION FUNCTIONS
   */
  const lastActiveEvent = ref<CalendarEvent | null>()
  const isCreatingEvent = ref<boolean>(false)
  const isUpdatingEvent = ref<boolean>(false)
  const isDeletingEvent = ref<boolean>(false)
  const operationInProgress = computed<boolean>(() => isCreatingEvent.value || isUpdatingEvent.value || isDeletingEvent.value)
  let abortController: AbortController | null = null

  /**
   * Dummy event to hold creation data
   */
  const eventSkeleton = ref<CalendarEvent>({ title: "", startDate: defaultDate.value })

  /**
   * Resets the dummy event data
   */
  function resetSkeleton() {
    eventSkeleton.value = { title: "", startDate: defaultDate.value }
  }

  /**
   * Submits the skeleton event and creates a real event from its data
   *
   * We assume it's been sanitized by the caller
   */
  async function submitSkeleton() {
    abortController = new AbortController()
    isCreatingEvent.value = true

    try {
      const res = await $fetch("/api/calendars/events/create", { method: "POST", body: { event : eventSkeleton.value, calendarId: activeCalendar.value?.id }, signal: abortController.signal })

      baseEvents.value.push(res)
    } catch (err) {
      console.log(err)
    } finally {
      abortController = null
      isCreatingEvent.value = false
    }
  }

  async function updateEventFromSkeleton() {
    abortController = new AbortController()
    isUpdatingEvent.value = true

    try {
      const res = await $fetch(`/api/calendars/events/${eventSkeleton.value.id}`, { method: "PATCH", body: { event : eventSkeleton.value, calendarId: activeCalendar.value?.id }, signal: abortController.signal })

      const eventIndex = baseEvents.value.findIndex(e => e.id === eventSkeleton.value.id)
      baseEvents.value[eventIndex] = res

      return res
    } finally {
      abortController = null
      isUpdatingEvent.value = false
    }
  }

  async function deleteEventFromSkeleton() {
    abortController = new AbortController()
    isDeletingEvent.value = true

    try {
      await $fetch(`/api/calendars/events/${eventSkeleton.value.id}`, { method: "DELETE", signal: abortController.signal })

      const eventIndex = baseEvents.value.findIndex(e => e.id === eventSkeleton.value.id)
      baseEvents.value.splice(eventIndex, 1)
    } catch (err) {
      console.log(err)
    } finally {
      abortController = null
      isDeletingEvent.value = false
    }
  }

  function cancelLatestRequest() {
    if (abortController) {
      abortController.abort()
    }
  }

  return {
    setActiveCalendar,
    activeCalendar,
    months,
    sortedMonths,
    daysPerYear,
    monthsPerYear,
    viewTypeOptions,
    currentConfig,
    currentDate,
    currentRPGDate,
    currentMonthData,
    defaultDate: defaultDate,
    selectedDate: selectedDate,
    selectDate,
    params,
    incrementViewMonth,
    decrementViewMonth,
    setViewMonth,
    getPreviousViewMonth,
    getNextViewMonth,
    incrementViewYear,
    decrementViewYear,
    jumpToDate,
    jumpToDefaultDate,
    getFormattedDateTitle,
    getMonthName,
    setViewType,
    getViewTypeTitle,
    isCurrentScreenActive,
    isAdvancedSearchOpen,
    revealAdvancedSearch,
    convertDateToDays,
    getDifferenceInDays,
    areDatesIdentical,
    compareDates,
    getRelativeString,
    baseEvents,
    allEvents,
    categories,
    currentEvents,
    getRelativeEventFromDate,
    getRelativeEventFromEvent,
    cancelLatestRequest,
    isCreatingEvent,
    isUpdatingEvent,
    isDeletingEvent,
    operationInProgress,
    eventSkeleton,
    resetSkeleton,
    submitSkeleton,
    lastActiveEvent,
    updateEventFromSkeleton,
    deleteEventFromSkeleton,
    isEditEventModalOpen,
    revealEditEventModal,
    isDeleteEventModalOpen,
    revealDeleteEventModal
  }
})