import Moment from 'moment'
import { mount } from '@vue/test-utils'
import Vue from 'vue'
import Calendar from '..'

function $$ (className) {
  return document.body.querySelectorAll(className)
}
describe('Calendar', () => {
  it('Calendar should be selectable', () => {
    const onSelect = jest.fn()
    const wrapper = mount(
      {
        render () {
          return <Calendar onSelect={onSelect} />
        },
      },
      { sync: false }
    )
    wrapper.findAll('.ant-fullcalendar-cell').at(0).trigger('click')
    expect(onSelect).toBeCalledWith(expect.anything())
    const value = onSelect.mock.calls[0][0]
    expect(Moment.isMoment(value)).toBe(true)
  })

  it('only Valid range should be selectable', () => {
    const onSelect = jest.fn()
    const validRange = [Moment('2018-02-02'), Moment('2018-02-18')]
    const wrapper = mount(
      {
        render () {
          return <Calendar onSelect={onSelect} validRange={validRange} defaultValue={Moment('2018-02-02')} />
        },
      },
      { sync: false }
    )
    wrapper.findAll('[title="February 1, 2018"]').at(0).trigger('click')
    wrapper.findAll('[title="February 2, 2018"]').at(0).trigger('click')
    expect(onSelect.mock.calls.length).toBe(1)
  })

  it('dates other than in valid range should be disabled', () => {
    const onSelect = jest.fn()
    const validRange = [Moment('2018-02-02'), Moment('2018-02-18')]
    const wrapper = mount(
      {
        render () {
          return <Calendar onSelect={onSelect} validRange={validRange} defaultValue={Moment('2018-02-02')} />
        },
      },
      { sync: false }
    )
    wrapper.findAll('[title="February 20, 2018"]').at(0).trigger('click')
    expect(wrapper.find('[title="February 20, 2018"]').classes()).toContain('ant-fullcalendar-disabled-cell')
    expect(onSelect.mock.calls.length).toBe(0)
  })

  it('months other than in valid range should be disabled', () => {
    const onSelect = jest.fn()
    const validRange = [Moment('2018-02-02'), Moment('2018-05-18')]
    const wrapper = mount(
      {
        render () {
          return <Calendar onSelect={onSelect} validRange={validRange} defaultValue={Moment('2018-02-02')} mode='year' />
        },
      },
      { sync: false }
    )
    expect(wrapper.findAll('[title="Jan"]').at(0).classes()).toContain('ant-fullcalendar-month-panel-cell-disabled')
    expect(wrapper.findAll('[title="Feb"]').at(0).classes()).not.toContain('ant-fullcalendar-month-panel-cell-disabled')
    expect(wrapper.findAll('[title="Jun"]').at(0).classes()).toContain('ant-fullcalendar-month-panel-cell-disabled')
    wrapper.findAll('[title="Jan"]').at(0).trigger('click')
    wrapper.findAll('[title="Mar"]').at(0).trigger('click')
    expect(onSelect.mock.calls.length).toBe(1)
  })

  it('months other than in valid range should not be shown in header', (done) => {
    document.body.innerHTML = ''
    const validRange = [Moment('2017-02-02'), Moment('2018-05-18')]
    const wrapper = mount(
      {
        render () {
          return <Calendar validRange={validRange} />
        },
      },
      { sync: false }
    )
    wrapper.find('.ant-fullcalendar-year-select').trigger('click')
    setTimeout(() => {
      $$('.ant-select-dropdown-menu-item')[0].click()
      wrapper.find('.ant-fullcalendar-month-select').trigger('click')
      setTimeout(() => {
        expect($$('.ant-select-dropdown-menu-item').length).toBe(13)
        done()
      }, 1000)
    }, 1000)
  })

  it('getDateRange should returns a disabledDate function', () => {
    const validRange = [Moment('2018-02-02'), Moment('2018-05-18')]
    const wrapper = mount(
      Calendar, {
        propsData: {
          validRange,
          defaultValue: Moment('2018-02-02'),
        },
        sync: false,
      }
    )
    const instance = wrapper.vm
    const disabledDate = instance.getDateRange(validRange)
    expect(disabledDate(Moment('2018-06-02'))).toBe(true)
    expect(disabledDate(Moment('2018-04-02'))).toBe(false)
  })

  it('Calendar should change mode by prop', (done) => {
    const monthMode = 'month'
    const yearMode = 'year'
    const wrapper = mount(Calendar, { sync: false })
    expect(wrapper.vm.sMode).toEqual(monthMode)
    wrapper.setProps({ mode: 'year' })
    Vue.nextTick(() => {
      expect(wrapper.vm.sMode).toEqual(yearMode)
      done()
    })
  })

  it('Calendar should switch mode', (done) => {
    const monthMode = 'month'
    const yearMode = 'year'
    const onPanelChangeStub = jest.fn()
    const wrapper = mount(
      Calendar, {
        propsData: {
          mode: yearMode,
        },
        listeners: {
          panelChange: onPanelChangeStub,
        },
        sync: false,
      }
    )
    expect(wrapper.vm.sMode).toEqual(yearMode)
    wrapper.vm.setType('date')
    Vue.nextTick(() => {
      expect(wrapper.vm.sMode).toEqual(monthMode)
      expect(onPanelChangeStub).toHaveBeenCalledTimes(1)
      done()
    })
  })
})