import {describe, expect, it} from 'vitest'
import {mount} from '@vue/test-utils'
import type {DefineComponent} from 'vue'
import SelectCheckbox from './SelectCheckbox.vue'

type Option = {
  label: string
  value: string | number
}

type SelectCheckboxProps = {
  modelValue: Array<string | number>
  options?: Option[]
  emptyOptionLabel?: string
  label?: string
  hint?: string
  error?: string
  success?: string
  textField?: string
  textValue?: string
  textLabel?: string
  rounded?: string
  displayTag?: boolean
  displaySelectAll?: boolean
  selectAllLabel?: string
  disabled?: boolean
  groupClass?: string
}

const SelectCheckboxForTest = SelectCheckbox as DefineComponent<SelectCheckboxProps>

const options: Option[] = [
  {label: 'France', value: 'fr'},
  {label: 'Belgique', value: 'be'},
  {label: 'Canada', value: 'ca'},
]

describe('MalioSelectCheckbox', () => {
  it('renders checkbox inputs for options', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    expect(checkboxes).toHaveLength(options.length)
  })

  it('emits an array with the toggled option value', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: ['fr'], options},
    })

    await wrapper.get('button').trigger('click')
    const checkboxInputs = wrapper.findAll('input[type="checkbox"]')
    await checkboxInputs[1].setValue(true)

    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([['fr', 'be']])
  })

  it('shows the selected count over the total count in the trigger', () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: ['fr', 'ca'], options},
    })

    expect(wrapper.text()).toContain('2/3')
  })

  it('shows 0 over the total count when nothing is selected', () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options},
    })

    expect(wrapper.text()).toContain('0/3')
  })

  it('hides the summary when displayTag is enabled and options are selected', () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: ['fr', 'ca'], options, displayTag: true},
    })

    expect(wrapper.text()).not.toContain('2/3')
    expect(wrapper.text()).toContain('France')
    expect(wrapper.text()).toContain('Canada')
  })

  it('hides the summary when displayTag is enabled and nothing is selected', () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options, displayTag: true, emptyOptionLabel: 'Aucune selection'},
    })

    expect(wrapper.text()).not.toContain('0/3')
    expect(wrapper.text()).toContain('Aucune selection')
  })

  it('does not show select all checkbox by default', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    expect(checkboxes).toHaveLength(options.length)
  })

  it('shows select all checkbox when displaySelectAll is true', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options, displaySelectAll: true},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    expect(checkboxes).toHaveLength(options.length + 1)
    expect(wrapper.text()).toContain('Tout sélectionner')
  })

  it('shows custom select all label', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options, displaySelectAll: true, selectAllLabel: 'Sélectionner tout'},
    })

    await wrapper.get('button').trigger('click')

    expect(wrapper.text()).toContain('Sélectionner tout')
  })

  it('emits all values when select all is clicked and none selected', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options, displaySelectAll: true},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    await checkboxes[0].setValue(true)

    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([['fr', 'be', 'ca']])
  })

  it('emits empty array when select all is clicked and all selected', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: ['fr', 'be', 'ca'], options, displaySelectAll: true},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    await checkboxes[0].setValue(false)

    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([[]])
  })

  it('select all checkbox is checked when all options are selected', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: ['fr', 'be', 'ca'], options, displaySelectAll: true},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    expect((checkboxes[0].element as HTMLInputElement).checked).toBe(true)
  })

  it('select all checkbox is unchecked when not all options are selected', async () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: ['fr'], options, displaySelectAll: true},
    })

    await wrapper.get('button').trigger('click')

    const checkboxes = wrapper.findAll('input[type="checkbox"]')
    expect((checkboxes[0].element as HTMLInputElement).checked).toBe(false)
  })

  it('applies groupClass via twMerge', () => {
    const wrapper = mount(SelectCheckboxForTest, {
      props: {modelValue: [], options: [], groupClass: 'mt-4'},
    })
    const root = wrapper.find('button').element.parentElement
    expect(root?.className).toContain('mt-4')
  })
})