import assert from 'node:assert/strict'
import test from 'node:test'
import { ref } from 'vue'
import { useContentMarkdownParagraphs } from '../composables/useContentMarkdownParagraphs.js'

/**
 * 테스트용 문단 편집 상태를 만든다.
 * @returns {{ calls: Object, pendingFocusLine: import('vue').Ref<number|null>, pendingFocusPosition: import('vue').Ref<string>, state: Object }}
 */
const createParagraphState = () => {
  const calls = {
    commits: []
  }
  const pendingFocusLine = ref(null)
  const pendingFocusPosition = ref('auto')
  const state = useContentMarkdownParagraphs({
    pendingFocusLine,
    pendingFocusPosition,
    commitInlineBlockLines: (block, replacementLines) => {
      calls.commits.push({ block, replacementLines })
    }
  })

  return {
    calls,
    pendingFocusLine,
    pendingFocusPosition,
    state
  }
}

test('문단 인라인 커밋은 여러 줄 입력을 빈 줄 없이 마크다운 줄로 반영한다', () => {
  const block = { type: 'paragraph', meta: { startLine: 2 } }
  const { calls, state } = createParagraphState()

  state.onParagraphInlineCommit(block, '첫 줄 \n\n둘째 줄')

  assert.deepEqual(calls.commits[0], {
    block,
    replacementLines: ['첫 줄', '둘째 줄']
  })
})

test('문단 입력 중 > 단독 입력은 인용 마커 줄로 변환한다', () => {
  const block = { type: 'paragraph', meta: { startLine: 4 } }
  const { calls, pendingFocusLine, pendingFocusPosition, state } = createParagraphState()

  state.onParagraphLiveInput(block, '>')

  assert.equal(pendingFocusLine.value, 4)
  assert.equal(pendingFocusPosition.value, 'start')
  assert.deepEqual(calls.commits[0].replacementLines, ['> '])
})

test('문단 Enter 분리는 커서 앞뒤 텍스트를 두 문단 줄로 나눈다', () => {
  const block = { type: 'paragraph', meta: { startLine: 10 } }
  const { calls, pendingFocusLine, pendingFocusPosition, state } = createParagraphState()

  state.onParagraphSplit(block, { before: '앞', after: '뒤' })

  assert.equal(pendingFocusLine.value, 11)
  assert.equal(pendingFocusPosition.value, 'start')
  assert.deepEqual(calls.commits[0].replacementLines, ['앞', '뒤'])
})

test('문단 코드 펜스 단축 입력은 코드 블록 줄로 변환한다', () => {
  const block = { type: 'paragraph', meta: { startLine: 3 } }
  const { calls, pendingFocusLine, pendingFocusPosition, state } = createParagraphState()

  state.onParagraphSplit(block, { before: '```javascript', after: '' })

  assert.equal(pendingFocusLine.value, 4)
  assert.equal(pendingFocusPosition.value, 'start')
  assert.deepEqual(calls.commits[0].replacementLines, ['```javascript', '', '```'])
})

test('문단 콜아웃 단축 입력은 콜아웃 블록 줄로 변환한다', () => {
  const block = { type: 'paragraph', meta: { startLine: 7 } }
  const { calls, pendingFocusLine, pendingFocusPosition, state } = createParagraphState()

  state.onParagraphSplit(block, { before: '!!!', after: '' })

  assert.equal(pendingFocusLine.value, 8)
  assert.equal(pendingFocusPosition.value, 'start')
  assert.deepEqual(calls.commits[0].replacementLines, [
    ':::callout emoji=none bg=blue',
    '',
    '',
    ':::'
  ])
})