import assert from 'node:assert/strict'
import { describe, it } from 'node:test'
import { ref } from 'vue'
import { useAdminMarkdownMediaActions } from '../composables/useAdminMarkdownMediaActions.js'

/**
 * 미디어 액션 테스트 상태를 만든다.
 * @param {Object} [overrides] - 상태 재정의
 * @returns {Object} 테스트 상태
 */
const createMediaActionHarness = (overrides = {}) => {
  const value = ref(overrides.value ?? '본문')
  const mediaPickerTarget = ref(overrides.target ?? 'image')
  const liveSlashInsertLine = ref(overrides.liveSlashLine ?? null)
  const isUploading = ref(overrides.isUploading ?? false)
  const isMediaPickerOpen = ref(overrides.isMediaPickerOpen ?? false)
  const activeMediaPickerTab = ref(overrides.activeMediaPickerTab ?? 'upload')
  const calls = {
    insertedBlocks: [],
    activeGalleryImages: [],
    closed: 0,
    fetched: 0,
    toasts: []
  }
  const selectedItems = ref(overrides.selectedItems ?? [])
  const uploadedItems = ref(overrides.uploadedItems ?? [])
  const modalUploadedItems = ref(overrides.modalUploadedItems ?? [])

  const actions = useAdminMarkdownMediaActions({
    value,
    mediaPickerTarget,
    liveSlashInsertLine,
    isUploading,
    isMediaPickerOpen,
    activeMediaPickerTab,
    resolveCurrentSelectedMediaItems: () => selectedItems.value,
    uploadMediaFilesWithState: async () => uploadedItems.value,
    uploadFilesIntoMediaPicker: async () => modalUploadedItems.value,
    fetchMediaItems: async () => {
      calls.fetched += 1
    },
    closeMediaPicker: () => {
      calls.closed += 1
    },
    insertBlockSnippet: (snippet) => {
      calls.insertedBlocks.push(snippet)
      value.value = `${value.value}\n${snippet}`
    },
    appendImagesToActiveGallery: (images) => {
      calls.activeGalleryImages.push(images)
    },
    showToast: (type, message) => {
      calls.toasts.push({ type, message })
    },
    resolveUploadFetchErrorMessage: (error) => `업로드 오류: ${error.message}`
  })

  return {
    value,
    mediaPickerTarget,
    liveSlashInsertLine,
    isUploading,
    isMediaPickerOpen,
    activeMediaPickerTab,
    selectedItems,
    uploadedItems,
    modalUploadedItems,
    calls,
    actions
  }
}

describe('useAdminMarkdownMediaActions', () => {
  it('일반 이미지와 갤러리를 블록 조각으로 삽입한다', () => {
    const imageHarness = createMediaActionHarness({
      selectedItems: [{ url: '/uploads/a.png' }]
    })

    imageHarness.actions.applyMediaSelection()

    assert.deepEqual(imageHarness.calls.insertedBlocks, ['![](/uploads/a.png)'])
    assert.equal(imageHarness.calls.closed, 1)

    const galleryHarness = createMediaActionHarness({
      target: 'gallery',
      selectedItems: [{ url: '/uploads/a.png' }, { url: '/uploads/b.png' }]
    })

    galleryHarness.actions.applyMediaSelection()

    assert.deepEqual(galleryHarness.calls.insertedBlocks, [
      [':::gallery', '![](/uploads/a.png)', '![](/uploads/b.png)', ':::'].join('\n')
    ])
  })

  it('활성 갤러리 대상은 블록 삽입 대신 갤러리 추가 콜백을 호출한다', () => {
    const harness = createMediaActionHarness({
      target: 'active-gallery',
      selectedItems: [{ url: '/uploads/a.png' }, { url: '/uploads/b.png' }]
    })

    harness.actions.applyMediaSelection()

    assert.equal(harness.calls.insertedBlocks.length, 0)
    assert.deepEqual(harness.calls.activeGalleryImages, [[
      { url: '/uploads/a.png', useAlt: false, caption: '' },
      { url: '/uploads/b.png', useAlt: false, caption: '' }
    ]])
  })

  it('슬래시 미디어 대기 줄에는 해당 줄 위치로 삽입하고 대기 상태를 초기화한다', () => {
    const harness = createMediaActionHarness({
      value: '첫 줄\n/image\n마지막 줄',
      target: 'image',
      liveSlashLine: 1,
      selectedItems: [{ url: '/uploads/a.png' }]
    })

    harness.actions.applyMediaSelection()

    assert.equal(harness.value.value, '첫 줄\n![](/uploads/a.png)\n마지막 줄')
    assert.equal(harness.liveSlashInsertLine.value, null)
  })

  it('커서 업로드 삽입 후 라이브러리 탭이 열려 있으면 목록을 갱신한다', async () => {
    const harness = createMediaActionHarness({
      target: 'image',
      uploadedItems: [{ url: '/uploads/a.png' }],
      isMediaPickerOpen: true,
      activeMediaPickerTab: 'library'
    })

    await harness.actions.uploadAndInsert([{ name: 'a.png' }], 'image')

    assert.deepEqual(harness.calls.insertedBlocks, ['![](/uploads/a.png)'])
    assert.equal(harness.calls.fetched, 1)
  })

  it('업로드 중이면 삽입과 모달 업로드를 실행하지 않는다', async () => {
    const harness = createMediaActionHarness({
      isUploading: true,
      uploadedItems: [{ url: '/uploads/a.png' }],
      modalUploadedItems: [{ url: '/uploads/b.png' }]
    })

    await harness.actions.uploadAndInsert([{ name: 'a.png' }], 'image')
    await harness.actions.uploadFromMediaModal([{ name: 'b.png' }])

    assert.equal(harness.calls.insertedBlocks.length, 0)
    assert.equal(harness.calls.toasts.length, 0)
  })

  it('미디어 모달 업로드 성공 시 완료 토스트를 표시한다', async () => {
    const harness = createMediaActionHarness({
      modalUploadedItems: [{ url: '/uploads/a.png' }]
    })

    await harness.actions.uploadFromMediaModal([{ name: 'a.png' }])

    assert.deepEqual(harness.calls.toasts, [{
      type: 'success',
      message: '업로드가 완료되어 파일이 선택되었습니다.'
    }])
  })
})