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

type CheckboxProps = {
  id?: string
  label?: string
  name?: string
  modelValue?: boolean | null
  inputClass?: string
  labelClass?: string
  groupClass?: string
  required?: boolean
  disabled?: boolean
  readonly?: boolean
  hint?: string
  error?: string
  success?: string
}

const CheckboxForTest = Checkbox as DefineComponent<CheckboxProps>

const mountCheckbox = (props: CheckboxProps = {}) =>
  mount(CheckboxForTest, {props})

describe('MalioCheckbox', () => {
  it('renders a checkbox input', () => {
    const wrapper = mountCheckbox()

    expect(wrapper.get('input').attributes('type')).toBe('checkbox')
  })

  it('renders the label text', () => {
    const wrapper = mountCheckbox({label: 'Accept terms'})

    expect(wrapper.get('label').text()).toContain('Accept terms')
  })

  it('uses a provided id on input and label', () => {
    const wrapper = mountCheckbox({
      id: 'checkbox-id',
      label: 'Accept terms',
    })

    expect(wrapper.get('input').attributes('id')).toBe('checkbox-id')
    expect(wrapper.get('label').attributes('for')).toBe('checkbox-id')
  })

  it('generates an id when none is provided', () => {
    const wrapper = mountCheckbox({label: 'Accept terms'})
    const inputId = wrapper.get('input').attributes('id')

    expect(inputId?.startsWith('malio-checkbox-')).toBe(true)
    expect(wrapper.get('label').attributes('for')).toBe(inputId)
  })

  it('applies the name attribute', () => {
    const wrapper = mountCheckbox({name: 'terms'})

    expect(wrapper.get('input').attributes('name')).toBe('terms')
  })

  it('reflects the checked state from modelValue', () => {
    const wrapper = mountCheckbox({modelValue: true})

    expect((wrapper.get('input').element as HTMLInputElement).checked).toBe(true)
  })

  it('emits update:modelValue when toggled', async () => {
    const wrapper = mountCheckbox({modelValue: false})
    const input = wrapper.get('input')

    await input.setValue(true)

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

  it('does not emit when readonly', async () => {
    const wrapper = mountCheckbox({
      modelValue: true,
      readonly: true,
    })
    const input = wrapper.get('input')

    await input.setValue(false)

    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
    expect((input.element as HTMLInputElement).checked).toBe(true)
  })

  it('sets disabled and required attributes', () => {
    const wrapper = mountCheckbox({
      disabled: true,
      required: true,
    })

    expect(wrapper.get('input').attributes('disabled')).toBeDefined()
    expect(wrapper.get('input').attributes('required')).toBeDefined()
  })

  it('shows a hint message and links it with aria-describedby', () => {
    const wrapper = mountCheckbox({hint: 'Required field'})
    const inputId = wrapper.get('input').attributes('id')

    expect(wrapper.get('p').text()).toBe('Required field')
    expect(wrapper.get('input').attributes('aria-describedby')).toBe(`${inputId}-describedby`)
  })

  it('shows an error state and message', () => {
    const wrapper = mountCheckbox({
      label: 'Accept terms',
      error: 'You must accept',
    })

    expect(wrapper.get('input').attributes('aria-invalid')).toBe('true')
    expect(wrapper.get('label').classes()).toContain('text-m-error')
    expect(wrapper.get('p').text()).toBe('You must accept')
  })

  it('shows success only when there is no error', () => {
    const wrapper = mountCheckbox({
      success: 'Valid',
      error: 'Invalid',
    })

    expect(wrapper.get('p').text()).toBe('Invalid')
    expect(wrapper.get('p').classes()).toContain('text-m-error')
  })

  it('shows success styles and message when there is no error', () => {
    const wrapper = mountCheckbox({
      label: 'Accept terms',
      success: 'Valid',
      modelValue: true,
    })

    expect(wrapper.get('label').classes()).toContain('text-m-success')
    expect(wrapper.get('p').text()).toBe('Valid')
    expect(wrapper.get('p').classes()).toContain('text-m-success')
  })
})