import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { enableAutoUnmount, mount } from '@vue/test-utils'
import { ref } from 'vue'
import type { FormField } from '../../src/api/types'
import MarkdownField from '../../src/components/form/fields/MarkdownField.vue'
import MLMarkdownField from '../../src/components/form/fields/MLMarkdownField.vue'
import MLTextField from '../../src/components/form/fields/MLTextField.vue'
import { FORM_ENABLED_LOCALES } from '../../src/components/form/formContext'
import { editablePayload, initialValues, mergeMLValue } from '../../src/components/form/formState'
import { isRegistered, rendererFor } from '../../src/components/form/registry'
import { resetState } from '../helpers'

function field(type: string, name = 'title'): FormField {
  return { name, label: 'Title', type } as FormField
}

const enabledLocales = ref<readonly string[]>(['en', 'pl'])

function mlMount(component: typeof MLTextField | typeof MLMarkdownField, props: object) {
  return mount(component, {
    props: props as never,
    attachTo: document.body,
    global: {
      provide: {
        [FORM_ENABLED_LOCALES as symbol]: enabledLocales,
      },
    },
  })
}

beforeEach(() => {
  resetState()
  enabledLocales.value = ['en', 'pl']
})

afterEach(() => {
  document.body.innerHTML = ''
})

enableAutoUnmount(afterEach)

describe('ML field registry and nested save body', () => {
  it('resolves markdown, mltext and mlmarkdown', () => {
    expect(rendererFor('markdown')).toBe(MarkdownField)
    expect(rendererFor('mltext')).toBe(MLTextField)
    expect(rendererFor('mlmarkdown')).toBe(MLMarkdownField)
    expect(isRegistered('markdown')).toBe(true)
    expect(isRegistered('mltext')).toBe(true)
    expect(isRegistered('mlmarkdown')).toBe(true)
  })

  it('sends every locale as a nested record', () => {
    const fields = [field('mltext'), field('mlmarkdown', 'body')]
    const payload = editablePayload(fields, {
      title: { en: 'Hello', pl: 'Witaj' },
      body: { en: '# Hi', pl: '# Cześć' },
    })
    expect(payload).toEqual({
      title: { en: 'Hello', pl: 'Witaj' },
      body: { en: '# Hi', pl: '# Cześć' },
    })
  })

  it('edits the active locale and copies from another', async () => {
    const wrapper = mlMount(MLTextField, {
      field: field('mltext'),
      modelValue: { en: 'Hello', pl: 'Witaj' },
      controlId: 'f-title',
    })
    const input = wrapper.find('input')
    expect(input.element.value).toBe('Hello')
    await wrapper.find('[data-ml-locale]').setValue('pl')
    expect(wrapper.find('input').element.value).toBe('Witaj')
    await wrapper.find('[data-ml-copy-from]').setValue('en')
    await wrapper.find('[data-ml-copy]').trigger('click')
    expect(wrapper.emitted('update:modelValue')?.at(-1)).toEqual([{ en: 'Hello', pl: 'Hello' }])
  })

  it('switches every ML control from one selector', async () => {
    const title = mlMount(MLTextField, {
      field: field('mltext'),
      modelValue: { en: 'Hello', pl: 'Witaj' },
      controlId: 'f-title',
    })
    const body = mlMount(MLMarkdownField, {
      field: field('mlmarkdown', 'body'),
      modelValue: { en: 'EN', pl: 'PL' },
      controlId: 'f-body',
    })
    expect(body.findComponent(MarkdownField).exists()).toBe(true)
    await title.find('[data-ml-locale]').setValue('pl')
    expect((body.find('[data-ml-locale]').element as HTMLSelectElement).value).toBe('pl')
    expect(body.find('textarea').element.value).toBe('PL')
  })

  it('does not execute raw HTML in the markdown preview', async () => {
    const wrapper = mount(MarkdownField, {
      props: {
        field: field('markdown', 'body'),
        modelValue: '<script>window.__ml_xss = 1</script><img src=x onerror="window.__ml_xss = 1">',
        controlId: 'f-body',
      },
      attachTo: document.body,
    })
    await wrapper.find('[data-markdown-preview]').trigger('click')
    expect(wrapper.find('script').exists()).toBe(false)
    expect(wrapper.find('img').exists()).toBe(false)
    expect((window as unknown as { __ml_xss?: number }).__ml_xss).toBeUndefined()
    expect(wrapper.find('[data-markdown-preview-pane]').text()).toContain('<script>')
  })

  it('seeds empty maps and lists every enabled locale on create', () => {
    const fields = [field('mltext')]
    const values = initialValues(fields, ['en', 'pl'])
    expect(values.title).toEqual({ en: '', pl: '' })
    const wrapper = mlMount(MLTextField, {
      field: fields[0],
      modelValue: values.title,
      controlId: 'f-title',
    })
    expect(wrapper.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
  })

  it('keeps sibling locales when adopt merges a GET host string', async () => {
    const fields = [field('mltext')]
    const merged = mergeMLValue('Hello', ['en', 'pl'])
    expect(merged).toEqual({ en: 'Hello', pl: '' })
    const wrapper = mlMount(MLTextField, {
      field: fields[0],
      modelValue: merged,
      controlId: 'f-title',
    })
    expect(wrapper.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
    await wrapper.find('[data-ml-locale]').setValue('pl')
    await wrapper.find('input').setValue('Witaj')
    expect(wrapper.emitted('update:modelValue')?.at(-1)).toEqual([{ en: 'Hello', pl: 'Witaj' }])
  })

  it('seeds empty maps and lists every enabled locale on mlmarkdown create', () => {
    const fields = [field('mlmarkdown', 'body')]
    const values = initialValues(fields, ['en', 'pl'])
    expect(values.body).toEqual({ en: '', pl: '' })
    const wrapper = mlMount(MLMarkdownField, {
      field: fields[0],
      modelValue: values.body,
      controlId: 'f-body',
    })
    expect(wrapper.findComponent(MarkdownField).exists()).toBe(true)
    expect(wrapper.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
  })

  it('keeps sibling locales when adopt merges a GET host string on mlmarkdown', async () => {
    const fields = [field('mlmarkdown', 'body')]
    const merged = mergeMLValue('# Hello', ['en', 'pl'])
    expect(merged).toEqual({ en: '# Hello', pl: '' })
    const wrapper = mlMount(MLMarkdownField, {
      field: fields[0],
      modelValue: merged,
      controlId: 'f-body',
    })
    expect(wrapper.findComponent(MarkdownField).exists()).toBe(true)
    expect(wrapper.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
    await wrapper.find('[data-ml-locale]').setValue('pl')
    await wrapper.find('textarea').setValue('# Witaj')
    expect(wrapper.emitted('update:modelValue')?.at(-1)).toEqual([{ en: '# Hello', pl: '# Witaj' }])
  })
})