import { AppDispatch, RootState, store } from '@/app/store'
import { refreshCalendarWithSyncToken } from '@/features/Calendars/services/refreshCalendar'
import { getDisplayedCalendarRange } from '@/utils/CalendarRangeManager'
import { updateCalendars } from '@/websocket/messaging/updateCalendars'
import { WS_INBOUND_EVENTS } from '@/websocket/protocols'
import { waitFor } from '@testing-library/dom'

jest.mock('@/features/Calendars/services/refreshCalendar')
jest.mock('@/utils/CalendarRangeManager')
jest.mock('@/app/store', () => ({
  store: {
    getState: jest.fn()
  }
}))

describe('updateCalendars', () => {
  let mockDispatch: jest.Mock
  const mockRange = {
    start: new Date('2025-01-15T10:00:00Z'),
    end: new Date('2025-01-16T10:00:00Z')
  }

  const mockState = {
    calendars: {
      list: {
        'cal1/entry1': { id: 'cal1/entry1', name: 'Calendar 1', syncToken: 1 },
        'cal2/entry2': { id: 'cal2/entry2', name: 'Calendar 2', syncToken: 1 }
      },
      templist: {}
    }
  } as unknown as RootState
  const mockAccumulators: {
    calendarsToRefresh: Map<string, any>
    calendarsToHide: Set<string>
    debouncedUpdateFn?: (dispatch: AppDispatch) => void
    shouldRefreshCalendarListRef: React.MutableRefObject<boolean>
    currentDebouncePeriod?: number
  } = {
    calendarsToRefresh: new Map<string, any>(),
    calendarsToHide: new Set(),
    shouldRefreshCalendarListRef: { current: false },
    currentDebouncePeriod: 0,
    debouncedUpdateFn: jest.fn()
  }

  beforeEach(() => {
    jest.clearAllMocks()
    mockDispatch = jest.fn()
    ;(getDisplayedCalendarRange as jest.Mock).mockReturnValue(mockRange)
    ;(store.getState as jest.Mock).mockReturnValue(mockState)
    mockAccumulators.calendarsToRefresh = new Map<string, any>()
    mockAccumulators.calendarsToHide = new Set()
    mockAccumulators.currentDebouncePeriod = 0
    mockAccumulators.shouldRefreshCalendarListRef.current = false
    mockAccumulators.debouncedUpdateFn = jest.fn()
    window.WS_SKIP_DELAY_MS = 0
  })

  it('should not dispatch for non-object messages', () => {
    updateCalendars(null, mockDispatch, mockAccumulators)
    updateCalendars('string', mockDispatch, mockAccumulators)
    updateCalendars(123, mockDispatch, mockAccumulators)

    expect(refreshCalendarWithSyncToken).not.toHaveBeenCalled()
  })

  it('should dispatch for registered calendars', async () => {
    const message = {
      [WS_INBOUND_EVENTS.CLIENT_REGISTERED]: [
        '/calendars/cal1/entry1',
        '/calendars/cal2/entry2'
      ]
    }

    updateCalendars(message, mockDispatch, mockAccumulators)

    await waitFor(() =>
      expect(refreshCalendarWithSyncToken).toHaveBeenCalledTimes(2)
    )
  })

  it('should dispatch for calendar path updates', async () => {
    const message = {
      '/calendars/cal1/entry1': { updated: true }
    }

    updateCalendars(message, mockDispatch, mockAccumulators)
    await waitFor(() => expect(refreshCalendarWithSyncToken).toHaveBeenCalled())
    expect(refreshCalendarWithSyncToken).toHaveBeenCalledWith({
      calendar: mockState.calendars.list['cal1/entry1'],
      calType: undefined,
      calendarRange: mockRange
    })
  })

  it('should use displayed calendar range', async () => {
    const message = {
      '/calendars/cal1/entry1': {}
    }

    updateCalendars(message, mockDispatch, mockAccumulators)
    await waitFor(() => expect(getDisplayedCalendarRange).toHaveBeenCalled())
  })

  it('should handle temp calendars', async () => {
    const stateWithTemp = {
      calendars: {
        list: {},
        templist: {
          'temp1/entry1': {
            id: 'temp1/entry1',
            name: 'Temp Calendar',
            syncToken: 1
          }
        }
      }
    }

    ;(store.getState as jest.Mock).mockReturnValue(stateWithTemp)

    const message = {
      '/calendars/temp1/entry1': {}
    }

    updateCalendars(message, mockDispatch, mockAccumulators)

    await waitFor(() =>
      expect(refreshCalendarWithSyncToken).toHaveBeenCalledWith({
        calendar: stateWithTemp.calendars.templist['temp1/entry1'],
        calType: 'temp',
        calendarRange: mockRange
      })
    )
  })

  it('should handle invalid calendar paths gracefully', () => {
    const message = {
      '/invalid/path': {},
      'not-a-path': {}
    }

    updateCalendars(message, mockDispatch, mockAccumulators)

    expect(refreshCalendarWithSyncToken).not.toHaveBeenCalled()
  })
})