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

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

const RadioButtonForTest = RadioButton as DefineComponent<RadioButtonProps>

const mountRadioButton = (props: RadioButtonProps = {}) =>
  mount(RadioButtonForTest, {
    props,
  })

describe('MalioRadioButton', () => {
  it('renders the label text', () => {
    const wrapper = mountRadioButton({label: 'Option 1'})

    expect(wrapper.get('.radio-text').text()).toBe('Option 1')
  })

  it('applies provided id to input and label', () => {
    const wrapper = mountRadioButton({id: 'radio-id', label: 'Option 1'})

    expect(wrapper.get('input').attributes('id')).toBe('radio-id')
    expect(wrapper.get('.radio-text').attributes('for')).toBe('radio-id')
  })

  it('generates an id when missing and reuses it on label', () => {
    const wrapper = mountRadioButton({label: 'Option 1'})

    const inputId = wrapper.get('input').attributes('id')

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

  it('applies the name attribute', () => {
    const wrapper = mountRadioButton({name: 'choice-group'})

    expect(wrapper.get('input').attributes('name')).toBe('choice-group')
  })

  it('sets required when true', () => {
    const wrapper = mountRadioButton({required: true})

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

  it('sets disabled styles when true', () => {
    const wrapper = mountRadioButton({disabled: true, label: 'Option 1'})

    expect(wrapper.get('input').attributes('disabled')).toBeDefined()
    expect(wrapper.get('.radio-control').classes()).toContain('is-disabled')
    expect(wrapper.get('.radio-text').classes()).toContain('cursor-not-allowed')
  })

  it('checks the input when modelValue matches value', () => {
    const wrapper = mountRadioButton({modelValue: 'a', value: 'a'})

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

  it('emits update:modelValue on change', async () => {
    const wrapper = mountRadioButton({modelValue: 'a', value: 'b'})

    await wrapper.get('input').trigger('change')

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

  it('prevents updates when readonly', async () => {
    const wrapper = mountRadioButton({modelValue: 'a', value: 'b', readonly: true})
    const input = wrapper.get('input')

    ;(input.element as HTMLInputElement).checked = true
    await input.trigger('change')

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

  it('shows hint message and wires aria-describedby', () => {
    const wrapper = mountRadioButton({hint: 'Helpful hint'})
    const input = wrapper.get('input')
    const message = wrapper.get('.radio-message')

    expect(message.text()).toBe('Helpful hint')
    expect(input.attributes('aria-describedby')).toBe(message.attributes('id'))
    expect(input.attributes('aria-invalid')).toBe('false')
  })

  it('shows error state on control, label and helper text', () => {
    const wrapper = mountRadioButton({
      label: 'Option 1',
      error: 'Selection required',
    })

    expect(wrapper.get('.radio-control').classes()).toContain('is-error')
    expect(wrapper.get('.radio-text').classes()).toContain('text-m-error')
    expect(wrapper.get('.radio-message').classes()).toContain('text-m-error')
    expect(wrapper.get('input').attributes('aria-invalid')).toBe('true')
  })

  it('shows success state when no error is present', () => {
    const wrapper = mountRadioButton({
      label: 'Option 1',
      success: 'Selection saved',
    })

    expect(wrapper.get('.radio-control').classes()).toContain('is-success')
    expect(wrapper.get('.radio-text').classes()).toContain('text-m-success')
    expect(wrapper.get('.radio-message').classes()).toContain('text-m-success')
  })

  it('prioritizes error over success', () => {
    const wrapper = mountRadioButton({
      error: 'Selection required',
      success: 'Selection saved',
    })

    expect(wrapper.get('.radio-control').classes()).toContain('is-error')
    expect(wrapper.get('.radio-control').classes()).not.toContain('is-success')
    expect(wrapper.get('.radio-message').text()).toBe('Selection required')
    expect(wrapper.get('.radio-message').classes()).toContain('text-m-error')
  })

  it('merges custom classes on group, input and label', () => {
    const wrapper = mountRadioButton({
      label: 'Option 1',
      groupClass: 'mt-0 custom-group',
      inputClass: 'border-red-500',
      labelClass: 'font-bold',
    })

    expect(wrapper.get('.radio-item').classes()).toContain('custom-group')
    expect(wrapper.get('.radio-item').classes()).toContain('mt-0')
    expect(wrapper.get('input').classes()).toContain('border-red-500')
    expect(wrapper.get('.radio-text').classes()).toContain('font-bold')
  })
})