import {describe, expect, it} from 'vitest'
import {mount} from '@vue/test-utils'
import type {DefineComponent} from 'vue'
import {Icon as IconifyIcon} from '@iconify/vue'
import ButtonIcon from './ButtonIcon.vue'

type ButtonIconProps = {
  id?: string
  icon: string
  ariaLabel: string
  disabled?: boolean
  buttonClass?: string
  iconSize?: string | number
  variant?: 'filled' | 'ghost'
}

const ButtonIconForTest = ButtonIcon as DefineComponent<ButtonIconProps>

const mountComponent = (props: ButtonIconProps = {icon: 'mdi:arrow-left', ariaLabel: 'Retour'}) =>
  mount(ButtonIconForTest, {
    props,
    global: {
      stubs: {
        IconifyIcon: {
          template: '<span data-test="icon" v-bind="$attrs" />',
        },
      },
    },
  })

describe('MalioButtonIcon', () => {
  it('renders a button with the icon', () => {
    const wrapper = mountComponent()

    expect(wrapper.find('button').exists()).toBe(true)
    expect(wrapper.find('[data-test="icon"]').exists()).toBe(true)
  })

  it('uses provided id on button', () => {
    const wrapper = mountComponent({id: 'custom-id', icon: 'mdi:arrow-left', ariaLabel: 'Retour'})

    expect(wrapper.get('button').attributes('id')).toBe('custom-id')
  })

  it('generates an id when missing', () => {
    const wrapper = mountComponent()

    const buttonId = wrapper.get('button').attributes('id')
    expect(buttonId?.startsWith('malio-button-icon-')).toBe(true)
  })

  it('sets aria-label on button', () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour'})

    expect(wrapper.get('button').attributes('aria-label')).toBe('Retour')
  })

  it('sets type="button" on the button', () => {
    const wrapper = mountComponent()

    expect(wrapper.get('button').attributes('type')).toBe('button')
  })

  it('passes icon name to icon component', () => {
    const wrapper = mount(ButtonIconForTest, {
      props: {icon: 'mdi:pencil-outline', ariaLabel: 'Modifier'},
    })

    const iconComponent = wrapper.findComponent(IconifyIcon)
    expect(iconComponent.props('icon')).toBe('mdi:pencil-outline')
  })

  it('passes icon size to icon component', () => {
    const wrapper = mount(ButtonIconForTest, {
      props: {icon: 'mdi:arrow-left', ariaLabel: 'Retour', iconSize: 32},
    })

    const iconComponent = wrapper.findComponent(IconifyIcon)
    expect(iconComponent.props('width')).toBe(32)
    expect(iconComponent.props('height')).toBe(32)
  })

  it('emits click event when clicked', async () => {
    const wrapper = mountComponent()

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

    expect(wrapper.emitted('click')).toHaveLength(1)
  })

  it('does not emit click when disabled', async () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour', disabled: true})

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

    expect(wrapper.emitted('click')).toBeUndefined()
  })

  it('sets disabled attribute when disabled', () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour', disabled: true})

    expect(wrapper.get('button').attributes('disabled')).toBeDefined()
  })

  it('applies disabled styles when disabled', () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour', disabled: true})

    expect(wrapper.get('button').classes()).toContain('cursor-not-allowed')
    expect(wrapper.get('button').classes()).toContain('bg-m-btn-disabled')
  })

  it('applies cursor-pointer when not disabled', () => {
    const wrapper = mountComponent()

    expect(wrapper.get('button').classes()).toContain('cursor-pointer')
  })

  it('applies white text color for icon visibility', () => {
    const wrapper = mountComponent()

    expect(wrapper.get('button').classes()).toContain('text-white')
  })

  it('applies default background color', () => {
    const wrapper = mountComponent()

    expect(wrapper.get('button').classes()).toContain('bg-m-btn-default')
  })

  it('applies buttonClass', () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour', buttonClass: 'rounded-full'})

    expect(wrapper.get('button').classes()).toContain('rounded-full')
  })

  it('applies ghost variant with no background and colored icon', () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour', variant: 'ghost'})

    expect(wrapper.get('button').classes()).toContain('text-m-btn-default')
    expect(wrapper.get('button').classes()).not.toContain('bg-m-btn-default')
    expect(wrapper.get('button').classes()).not.toContain('text-white')
  })

  it('applies ghost disabled styles with no background', () => {
    const wrapper = mountComponent({icon: 'mdi:arrow-left', ariaLabel: 'Retour', variant: 'ghost', disabled: true})

    expect(wrapper.get('button').classes()).toContain('text-m-btn-disabled')
    expect(wrapper.get('button').classes()).toContain('cursor-not-allowed')
    expect(wrapper.get('button').classes()).not.toContain('bg-m-btn-disabled')
  })
})