import assert from 'node:assert/strict'
import test from 'node:test'
import {
  createMediaBlockMarkdown,
  formatMediaFileSize,
  getMediaItemKind,
  getMediaPickerPreviewUrl,
  isMediaItemSelectableForTarget,
  isUploadFileAllowedForMediaTarget
} from '../lib/markdown-editor-media.js'

test('미디어 파일 크기를 표시 문자열로 변환한다', () => {
  assert.equal(formatMediaFileSize(512), '512 B')
  assert.equal(formatMediaFileSize(1536), '2 KB')
  assert.equal(formatMediaFileSize(1024 * 1024 * 1.5), '1.5 MB')
  assert.equal(formatMediaFileSize(0), '')
})

test('미디어 항목 kind가 없으면 확장자와 URL로 종류를 판별한다', () => {
  assert.equal(getMediaItemKind({ url: '/uploads/a.webp' }), 'image')
  assert.equal(getMediaItemKind({ url: '/uploads/a.mp4?x=1' }), 'video')
  assert.equal(getMediaItemKind({ url: '/uploads/a.m4a' }), 'audio')
  assert.equal(getMediaItemKind({ url: '/uploads/a.zip' }), 'file')
})

test('선택 대상별로 허용 미디어를 판별하고 파생 썸네일은 제외한다', () => {
  assert.equal(isMediaItemSelectableForTarget({ url: '/uploads/posts/2026/07/a.png' }, 'image'), true)
  assert.equal(isMediaItemSelectableForTarget({ url: '/uploads/posts/2026/07/a.mp4' }, 'image'), false)
  assert.equal(isMediaItemSelectableForTarget({ url: '/uploads/posts/2026/07/a.mp4' }, 'video'), true)
  assert.equal(isMediaItemSelectableForTarget({ url: '/uploads/posts/2026/07/thumbs/a-card.webp' }, 'image'), false)
  assert.equal(isMediaItemSelectableForTarget({ url: '/uploads/posts/2026/07/thumbs/a-body-720.webp' }, 'gallery'), false)
})

test('미디어 선택 미리보기는 본문 파생 썸네일을 우선한다', () => {
  assert.equal(getMediaPickerPreviewUrl({
    url: '/uploads/posts/2026/07/a.png',
    updatedAt: '2026-07-24T00:00:00.000Z',
    size: 100,
    bodyThumbnailStatus: {
      hasThumbnail: true
    }
  }), '/uploads/posts/2026/07/thumbs/a-body-720.webp?v=2026-07-24T00%3A00%3A00.000Z-100')
})

test('업로드 파일은 선택 대상별 MIME 타입으로 허용 여부를 판별한다', () => {
  assert.equal(isUploadFileAllowedForMediaTarget({ type: 'image/png' }, 'gallery'), true)
  assert.equal(isUploadFileAllowedForMediaTarget({ type: 'video/mp4' }, 'video'), true)
  assert.equal(isUploadFileAllowedForMediaTarget({ type: 'audio/mpeg' }, 'audio'), true)
  assert.equal(isUploadFileAllowedForMediaTarget({ type: 'application/pdf' }, 'file'), true)
  assert.equal(isUploadFileAllowedForMediaTarget({ type: 'image/png' }, 'file'), false)
})

test('미디어 항목으로 fenced 미디어 블록을 만든다', () => {
  assert.deepEqual(createMediaBlockMarkdown('video', {
    url: '/uploads/a.mp4',
    title: '영상'
  }), [':::video', 'url=/uploads/a.mp4', 'title=영상', 'caption=', ':::'])

  assert.deepEqual(createMediaBlockMarkdown('file', {
    url: '/uploads/a.pdf',
    name: 'a.pdf',
    size: 2048
  }), [':::file', 'url=/uploads/a.pdf', 'title=a.pdf', 'description=', 'name=a.pdf', 'size=2 KB', ':::'])
})