import { useState, useEffect, useCallback } from 'react'
import { useParams, useNavigate } from 'react-router-dom'
import { useTranslation } from 'react-i18next'
import * as examApi from '../api/examApi'
import type { Exam, Question, QuestionType, Choice } from '../types'

const QUESTION_TYPES: { value: QuestionType; labelKey: string }[] = [
  { value: 'multiple-choice', labelKey: 'editor.multipleChoice' },
  { value: 'multiple-select', labelKey: 'editor.multipleSelect' },
  { value: 'short-answer', labelKey: 'editor.shortAnswer' },
  { value: 'translation', labelKey: 'editor.translation' },
  { value: 'math-input', labelKey: 'editor.mathInput' },
  { value: 'essay', labelKey: 'editor.essay' },
  { value: 'match', labelKey: 'editor.match' },
  { value: 'order', labelKey: 'editor.order' },
]

const BLANK_EXAM: Exam = {
  title: '',
  subtitle: '',
  questions: [],
}

function makeBlankQuestion(type: QuestionType, index: number): Question {
  const id = `q${index + 1}`
  const base: Question = { id, type, prompt: '', points: 1 }
  switch (type) {
    case 'multiple-choice':
      return { ...base, choices: [{ id: 'a', text: '' }, { id: 'b', text: '' }], answer: 'a' }
    case 'multiple-select':
      return { ...base, choices: [{ id: 'a', text: '' }, { id: 'b', text: '' }], answer: [] }
    case 'short-answer':
    case 'translation':
    case 'math-input':
      return { ...base, answer: '', acceptedForms: [], caseSensitive: false }
    case 'essay':
      return { ...base, minWords: 0, rubric: [] }
    case 'match':
      return { ...base, left: [], right: [], answer: {} }
    case 'order':
      return { ...base, items: [], answer: [] }
    default:
      return base
  }
}

export default function ExamEditor() {
  const { t } = useTranslation()
  const { id: paramId } = useParams<{ id: string }>()
  const navigate = useNavigate()
  const isNew = paramId === 'new'
  const examId = isNew ? null : Number(paramId)

  const [exam, setExam] = useState<Exam>(BLANK_EXAM)
  const [selectedIdx, setSelectedIdx] = useState(0)
  const [loading, setLoading] = useState(!isNew)
  const [error, setError] = useState<string | null>(null)
  const [saving, setSaving] = useState(false)
  const [saveMsg, setSaveMsg] = useState<string | null>(null)
  const [hasChanges, setHasChanges] = useState(isNew)

  // Load existing exam
  useEffect(() => {
    if (isNew) return
    setLoading(true)
    examApi.getExam(examId!)
      .then((data) => {
        setExam(data)
        setHasChanges(false)
      })
      .catch((e) => setError((e as Error).message))
      .finally(() => setLoading(false))
  }, [examId, isNew])

  const updateExam = useCallback((fn: (draft: Exam) => void) => {
    setExam((prev) => {
      const draft = structuredClone(prev)
      fn(draft)
      return draft
    })
    setHasChanges(true)
    setSaveMsg(null)
  }, [])

  const addQuestion = (type: QuestionType) => {
    updateExam((draft) => {
      const q = makeBlankQuestion(type, draft.questions.length)
      draft.questions.push(q)
    })
    setSelectedIdx(exam.questions.length)
  }

  const removeQuestion = (idx: number) => {
    updateExam((draft) => {
      draft.questions.splice(idx, 1)
    })
    if (selectedIdx >= idx && selectedIdx > 0) {
      setSelectedIdx(selectedIdx - 1)
    }
  }

  const saveExam = async () => {
    if (!exam.title.trim()) {
      setError(t('editor.examTitleRequired'))
      return
    }
    if (exam.questions.length === 0) {
      setError(t('editor.atLeastOneQuestion'))
      return
    }

    setSaving(true)
    setError(null)
    try {
      if (isNew) {
        const data = await examApi.createExam(exam)
        setSaveMsg(t('editor.examCreated'))
        setHasChanges(false)
        navigate(`/exam-editor/${data.id}`, { replace: true })
      } else {
        await examApi.updateExam(examId!, exam)
        setSaveMsg(t('editor.examSaved'))
        setHasChanges(false)
      }
      setTimeout(() => setSaveMsg(null), 3000)
    } catch (e) {
      setError((e as Error).message)
    } finally {
      setSaving(false)
    }
  }

  const selectedQuestion = exam.questions[selectedIdx]

  const truncate = (s: string, n = 40) => (s.length > n ? s.slice(0, n) + '…' : s)

  return (
    <div className="exam-editor-shell">
      {/* Header */}
      <header className="exam-editor-header">
        <div className="exam-editor-header-left">
          <button className="btn btn-ghost btn-sm" onClick={() => navigate('/workspace/exams')}>
            {t('editor.back')}
          </button>
          <input
            className="exam-editor-title-input"
            value={exam.title}
            onChange={(e) => updateExam((d) => { d.title = e.target.value })}
            placeholder={t('editor.examTitlePlaceholder')}
          />
        </div>
        <div className="exam-editor-header-right">
          {saveMsg && <span className="exam-editor-save-msg">{saveMsg}</span>}
          {hasChanges && <span className="exam-editor-unsaved">{t('editor.unsavedChanges')}</span>}
          <button className="btn btn-primary" onClick={() => void saveExam()} disabled={saving}>
            {saving ? t('editor.saving') : isNew ? t('editor.createExam') : t('editor.save')}
          </button>
        </div>
      </header>

      {error && (
        <div className="workspace-alert workspace-alert-error exam-editor-alert">
          <span>{error}</span>
          <button onClick={() => setError(null)} className="workspace-alert-close">×</button>
        </div>
      )}

      {loading ? (
        <div className="exam-editor-loading">{t('common.loading')}</div>
      ) : (
        <div className="exam-editor-body">
          {/* Sidebar */}
          <aside className="exam-editor-sidebar">
            <div className="sidebar-section-label">{t('editor.questionsLabel')}</div>
            <div className="nav-list">
              {exam.questions.map((q, i) => (
                <button
                  key={q.id}
                  className={`nav-item${selectedIdx === i ? ' active' : ''}`}
                  onClick={() => setSelectedIdx(i)}
                >
                  <span className="nav-item-num">{i + 1}</span>
                  <span className="nav-item-title">{truncate(q.prompt) || 'Untitled'}</span>
                  <span
                    className="exam-editor-q-remove"
                    onClick={(e) => { e.stopPropagation(); removeQuestion(i) }}
                    title={t('common.delete')}
                  >
                    ✕
                  </span>
                </button>
              ))}
            </div>

            <div className="exam-editor-add">
              <div className="sidebar-section-label" style={{ marginTop: 24 }}>{t('editor.addQuestion')}</div>
              <div className="exam-editor-type-grid">
                {QUESTION_TYPES.map((tType) => (
                  <button
                    key={tType.value}
                    className="exam-editor-type-btn"
                    onClick={() => addQuestion(tType.value)}
                  >
                    {t(tType.labelKey)}
                  </button>
                ))}
              </div>
            </div>
          </aside>

          {/* Main Editor */}
          <main className="exam-editor-main">
            {selectedQuestion ? (
              <QuestionEditor
                question={selectedQuestion}
                onChange={(fn) => {
                  updateExam((draft) => {
                    const q = draft.questions[selectedIdx]
                    if (q) fn(q)
                  })
                }}
              />
            ) : (
              <div className="workspace-empty">
                <div className="workspace-empty-icon">◇</div>
                <div className="workspace-empty-title">{t('editor.noQuestions')}</div>
                <div className="workspace-empty-desc">{t('editor.noQuestionsDesc')}</div>
              </div>
            )}
          </main>
        </div>
      )}
    </div>
  )
}

/* ─── Question Editor ─── */

interface QEProps {
  question: Question
  onChange: (fn: (q: Question) => void) => void
}

function QuestionEditor({ question, onChange }: QEProps) {
  const { t } = useTranslation()
  const update = <K extends keyof Question>(key: K, value: Question[K]) => {
    onChange((q) => { q[key] = value })
  }

  return (
    <div className="question-form">
      <div className="question-form-header">
        <span className="mono faint" style={{ fontSize: 12 }}>{t('editor.questionEditor')}</span>
        <span className="q-category" style={{ marginLeft: 'auto' }}>{question.type}</span>
      </div>

      <div className="question-form-row">
        <label className="question-form-label">{t('editor.prompt')}</label>
        <textarea
          className="textarea"
          value={question.prompt}
          onChange={(e) => update('prompt', e.target.value)}
          rows={3}
          placeholder={t('editor.promptPlaceholder')}
        />
      </div>

      <div className="question-form-row-inline">
        <div>
          <label className="question-form-label">{t('editor.categoryOptional')}</label>
          <input
            className="input"
            value={question.category ?? ''}
            onChange={(e) => update('category', e.target.value || undefined)}
            placeholder={t('editor.categoryPlaceholder')}
          />
        </div>
        <div style={{ width: 100 }}>
          <label className="question-form-label">{t('editor.points')}</label>
          <input
            className="input"
            type="number"
            min={1}
            value={question.points ?? 1}
            onChange={(e) => update('points', Math.max(1, Number(e.target.value)))}
          />
        </div>
      </div>

      <div className="question-form-row">
        <label className="question-form-label">{t('editor.explanationOptional')}</label>
        <textarea
          className="textarea"
          value={question.explanation ?? ''}
          onChange={(e) => update('explanation', e.target.value || undefined)}
          rows={2}
          placeholder={t('editor.explanationPlaceholder')}
        />
      </div>

      {/* Type-specific editors */}
      {question.type === 'multiple-choice' && <MultipleChoiceEditor q={question} onChange={onChange} />}
      {question.type === 'multiple-select' && <MultipleSelectEditor q={question} onChange={onChange} />}
      {(question.type === 'short-answer' || question.type === 'translation' || question.type === 'math-input') && (
        <TextAnswerEditor q={question} onChange={onChange} />
      )}
      {question.type === 'translation' && (
        <div className="question-form-row-inline">
          <div>
            <label className="question-form-label">{t('editor.sourceLanguage')}</label>
            <input className="input" value={question.sourceLanguage ?? ''} onChange={(e) => update('sourceLanguage', e.target.value || undefined)} placeholder={t('editor.sourceLanguagePlaceholder')} />
          </div>
          <div>
            <label className="question-form-label">{t('editor.targetLanguage')}</label>
            <input className="input" value={question.targetLanguage ?? ''} onChange={(e) => update('targetLanguage', e.target.value || undefined)} placeholder={t('editor.targetLanguagePlaceholder')} />
          </div>
        </div>
      )}
      {question.type === 'essay' && <EssayEditor q={question} onChange={onChange} />}
      {question.type === 'match' && <MatchEditor q={question} onChange={onChange} />}
      {question.type === 'order' && <OrderEditor q={question} onChange={onChange} />}
    </div>
  )
}

/* ─── Multiple Choice ─── */

function MultipleChoiceEditor({ q, onChange }: { q: Question; onChange: QEProps['onChange'] }) {
  const { t } = useTranslation()
  const choices = q.choices ?? []
  const setChoices = (c: Choice[]) => onChange((q) => { q.choices = c })
  const setAnswer = (a: string) => onChange((q) => { q.answer = a })

  const addChoice = () => {
    const nextId = String.fromCharCode(97 + choices.length) // a, b, c...
    setChoices([...choices, { id: nextId, text: '' }])
  }

  const removeChoice = (idx: number) => {
    const next = choices.filter((_, i) => i !== idx)
    // Renumber
    const renumbered = next.map((c, i) => ({ ...c, id: String.fromCharCode(97 + i) }))
    setChoices(renumbered)
    if (q.answer === choices[idx]?.id) setAnswer(renumbered[0]?.id ?? '')
  }

  const updateChoice = (idx: number, text: string) => {
    const next = [...choices]
    next[idx] = { ...next[idx], text }
    setChoices(next)
  }

  return (
    <div className="question-form-section">
      <label className="question-form-label">{t('editor.choices')}</label>
      <div className="choice-editor-list">
        {choices.map((c, i) => (
          <div key={c.id} className="choice-editor-row">
            <input
              type="radio"
              name="mc-answer"
              checked={q.answer === c.id}
              onChange={() => setAnswer(c.id)}
              title={t('editor.markAsCorrect')}
            />
            <span className="mono faint" style={{ fontSize: 13, width: 20 }}>{c.id}</span>
            <input
              className="input"
              value={c.text}
              onChange={(e) => updateChoice(i, e.target.value)}
              placeholder={t('editor.choicePlaceholder', { id: c.id })}
            />
            <button className="btn btn-ghost btn-sm" onClick={() => removeChoice(i)} title={t('common.delete')}>✕</button>
          </div>
        ))}
      </div>
      <button className="btn btn-sm" onClick={addChoice} style={{ marginTop: 8 }}>
        {t('editor.addChoice')}
      </button>
    </div>
  )
}

/* ─── Multiple Select ─── */

function MultipleSelectEditor({ q, onChange }: { q: Question; onChange: QEProps['onChange'] }) {
  const { t } = useTranslation()
  const choices = q.choices ?? []
  const answer = (q.answer as string[]) ?? []
  const setChoices = (c: Choice[]) => onChange((q) => { q.choices = c })
  const toggleAnswer = (id: string) => {
    const next = answer.includes(id) ? answer.filter((a) => a !== id) : [...answer, id]
    onChange((q) => { q.answer = next })
  }

  const addChoice = () => {
    const nextId = String.fromCharCode(97 + choices.length)
    setChoices([...choices, { id: nextId, text: '' }])
  }

  const removeChoice = (idx: number) => {
    const removedId = choices[idx].id
    const next = choices.filter((_, i) => i !== idx)
    const renumbered = next.map((c, i) => ({ ...c, id: String.fromCharCode(97 + i) }))
    setChoices(renumbered)
    onChange((q) => { q.answer = (q.answer as string[]).filter((a) => a !== removedId) })
  }

  const updateChoice = (idx: number, text: string) => {
    const next = [...choices]
    next[idx] = { ...next[idx], text }
    setChoices(next)
  }

  return (
    <div className="question-form-section">
      <label className="question-form-label">{t('editor.choicesCheckCorrect')}</label>
      <div className="choice-editor-list">
        {choices.map((c, i) => (
          <div key={c.id} className="choice-editor-row">
            <input
              type="checkbox"
              checked={answer.includes(c.id)}
              onChange={() => toggleAnswer(c.id)}
            />
            <span className="mono faint" style={{ fontSize: 13, width: 20 }}>{c.id}</span>
            <input
              className="input"
              value={c.text}
              onChange={(e) => updateChoice(i, e.target.value)}
              placeholder={t('editor.choicePlaceholder', { id: c.id })}
            />
            <button className="btn btn-ghost btn-sm" onClick={() => removeChoice(i)} title={t('common.delete')}>✕</button>
          </div>
        ))}
      </div>
      <button className="btn btn-sm" onClick={addChoice} style={{ marginTop: 8 }}>
        {t('editor.addChoice')}
      </button>
    </div>
  )
}

/* ─── Text Answer (short, translation, math) ─── */

function TextAnswerEditor({ q, onChange }: { q: Question; onChange: QEProps['onChange'] }) {
  const { t } = useTranslation()
  const accepted = q.acceptedForms ?? []
  return (
    <div className="question-form-section">
      <div className="question-form-row">
        <label className="question-form-label">{t('editor.correctAnswer')}</label>
        <input
          className="input"
          value={(q.answer as string) ?? ''}
          onChange={(e) => onChange((q) => { q.answer = e.target.value })}
          placeholder={t('editor.correctAnswerPlaceholder')}
        />
      </div>
      <div className="question-form-row">
        <label className="question-form-label">{t('editor.acceptedForms')}</label>
        {accepted.map((form, i) => (
          <div key={i} className="choice-editor-row" style={{ marginBottom: 6 }}>
            <input
              className="input"
              value={form}
              onChange={(e) => {
                const next = [...accepted]
                next[i] = e.target.value
                onChange((q) => { q.acceptedForms = next })
              }}
              placeholder={t('editor.alternativeAnswer')}
            />
            <button
              className="btn btn-ghost btn-sm"
              onClick={() => {
                const next = accepted.filter((_, idx) => idx !== i)
                onChange((q) => { q.acceptedForms = next })
              }}
            >
              ✕
            </button>
          </div>
        ))}
        <button
          className="btn btn-sm"
          onClick={() => onChange((q) => { q.acceptedForms = [...(q.acceptedForms ?? []), ''] })}
          style={{ marginTop: 4 }}
        >
          {t('editor.addAlternative')}
        </button>
      </div>
      <div className="question-form-row-inline" style={{ marginTop: 8 }}>
        <label className="question-form-check">
          <input
            type="checkbox"
            checked={q.caseSensitive ?? false}
            onChange={(e) => onChange((q) => { q.caseSensitive = e.target.checked })}
          />
          {t('editor.caseSensitive')}
        </label>
        <label className="question-form-check">
          <input
            type="checkbox"
            checked={q.ignorePunctuation ?? false}
            onChange={(e) => onChange((q) => { q.ignorePunctuation = e.target.checked })}
          />
          {t('editor.ignorePunctuation')}
        </label>
        <label className="question-form-check">
          <input
            type="checkbox"
            checked={q.ignoreAccents ?? false}
            onChange={(e) => onChange((q) => { q.ignoreAccents = e.target.checked })}
          />
          {t('editor.ignoreAccents')}
        </label>
      </div>
    </div>
  )
}

/* ─── Essay ─── */

function EssayEditor({ q, onChange }: { q: Question; onChange: QEProps['onChange'] }) {
  const { t } = useTranslation()
  const rubric = q.rubric ?? []
  return (
    <div className="question-form-section">
      <div className="question-form-row-inline">
        <div style={{ width: 140 }}>
          <label className="question-form-label">{t('editor.minWords')}</label>
          <input
            className="input"
            type="number"
            min={0}
            value={q.minWords ?? 0}
            onChange={(e) => onChange((q) => { q.minWords = Number(e.target.value) })}
          />
        </div>
      </div>
      <div className="question-form-row">
        <label className="question-form-label">{t('editor.rubricCriteria')}</label>
        {rubric.map((item, i) => (
          <div key={i} className="choice-editor-row" style={{ marginBottom: 6 }}>
            <input
              className="input"
              value={item}
              onChange={(e) => {
                const next = [...rubric]
                next[i] = e.target.value
                onChange((q) => { q.rubric = next })
              }}
              placeholder={t('editor.criterion')}
            />
            <button
              className="btn btn-ghost btn-sm"
              onClick={() => {
                const next = rubric.filter((_, idx) => idx !== i)
                onChange((q) => { q.rubric = next })
              }}
            >
              ✕
            </button>
          </div>
        ))}
        <button
          className="btn btn-sm"
          onClick={() => onChange((q) => { q.rubric = [...(q.rubric ?? []), ''] })}
          style={{ marginTop: 4 }}
        >
          {t('editor.addCriterion')}
        </button>
      </div>
    </div>
  )
}

/* ─── Match ─── */

function MatchEditor({ q, onChange }: { q: Question; onChange: QEProps['onChange'] }) {
  const { t } = useTranslation()
  const left = q.left ?? []
  const right = q.right ?? []
  const answer = (q.answer as Record<string, string>) ?? {}

  const addLeft = () => {
    const id = `l${left.length + 1}`
    onChange((q) => { q.left = [...left, { id, text: '' }] })
  }
  const addRight = () => {
    const id = `r${right.length + 1}`
    onChange((q) => { q.right = [...right, { id, text: '' }] })
  }
  const removeLeft = (idx: number) => {
    const removed = left[idx]
    onChange((q) => {
      q.left = left.filter((_, i) => i !== idx)
      const ans = { ...(q.answer as Record<string, string>) }
      delete ans[removed.id]
      q.answer = ans
    })
  }
  const removeRight = (idx: number) => {
    const removed = right[idx]
    onChange((q) => {
      q.right = right.filter((_, i) => i !== idx)
      const ans = { ...(q.answer as Record<string, string>) }
      for (const k of Object.keys(ans)) {
        if (ans[k] === removed.id) delete ans[k]
      }
      q.answer = ans
    })
  }

  return (
    <div className="question-form-section">
      <div className="match-editor-grid">
        <div>
          <label className="question-form-label">{t('editor.leftColumn')}</label>
          {left.map((item, i) => (
            <div key={item.id} className="choice-editor-row" style={{ marginBottom: 6 }}>
              <input
                className="input"
                value={item.text}
                onChange={(e) => {
                  const next = [...left]
                  next[i] = { ...next[i], text: e.target.value }
                  onChange((q) => { q.left = next })
                }}
                placeholder={t('editor.leftItemPlaceholder', { index: i + 1 })}
              />
              <button className="btn btn-ghost btn-sm" onClick={() => removeLeft(i)}>✕</button>
            </div>
          ))}
          <button className="btn btn-sm" onClick={addLeft} style={{ marginTop: 4 }}>{t('editor.addLeft')}</button>
        </div>
        <div>
          <label className="question-form-label">{t('editor.rightColumn')}</label>
          {right.map((item, i) => (
            <div key={item.id} className="choice-editor-row" style={{ marginBottom: 6 }}>
              <input
                className="input"
                value={item.text}
                onChange={(e) => {
                  const next = [...right]
                  next[i] = { ...next[i], text: e.target.value }
                  onChange((q) => { q.right = next })
                }}
                placeholder={t('editor.rightItemPlaceholder', { index: i + 1 })}
              />
              <button className="btn btn-ghost btn-sm" onClick={() => removeRight(i)}>✕</button>
            </div>
          ))}
          <button className="btn btn-sm" onClick={addRight} style={{ marginTop: 4 }}>{t('editor.addRight')}</button>
        </div>
      </div>

      {left.length > 0 && right.length > 0 && (
        <div style={{ marginTop: 16 }}>
          <label className="question-form-label">{t('editor.correctPairings')}</label>
          {left.map((l) => (
            <div key={l.id} className="choice-editor-row" style={{ marginBottom: 6 }}>
              <span style={{ minWidth: 120, fontSize: 14 }}>{l.text || l.id}</span>
              <span className="faint">→</span>
              <select
                className="input"
                style={{ width: 200 }}
                value={answer[l.id] ?? ''}
                onChange={(e) => {
                  const next = { ...answer, [l.id]: e.target.value }
                  if (!e.target.value) delete next[l.id]
                  onChange((q) => { q.answer = next })
                }}
              >
                <option value="">{t('editor.select')}</option>
                {right.map((r) => (
                  <option key={r.id} value={r.id}>{r.text || r.id}</option>
                ))}
              </select>
            </div>
          ))}
        </div>
      )}
    </div>
  )
}

/* ─── Order ─── */

function OrderEditor({ q, onChange }: { q: Question; onChange: QEProps['onChange'] }) {
  const { t } = useTranslation()
  const items = q.items ?? []
  const answer = (q.answer as string[]) ?? []

  const addItem = () => {
    const id = `s${items.length + 1}`
    onChange((q) => { q.items = [...items, { id, text: '' }] })
  }

  const removeItem = (idx: number) => {
    const removed = items[idx]
    onChange((q) => {
      q.items = items.filter((_, i) => i !== idx)
      q.answer = answer.filter((a) => a !== removed.id)
    })
  }

  const moveItem = (idx: number, dir: -1 | 1) => {
    const next = [...items]
    const swap = idx + dir
    if (swap < 0 || swap >= next.length) return
    ;[next[idx], next[swap]] = [next[swap], next[idx]]
    onChange((q) => { q.items = next })
  }

  return (
    <div className="question-form-section">
      <label className="question-form-label">{t('editor.items')}</label>
      {items.map((item, i) => (
        <div key={item.id} className="choice-editor-row" style={{ marginBottom: 6 }}>
          <span className="mono faint" style={{ fontSize: 12, width: 24 }}>{i + 1}</span>
          <input
            className="input"
            value={item.text}
            onChange={(e) => {
              const next = [...items]
              next[i] = { ...next[i], text: e.target.value }
              onChange((q) => { q.items = next })
            }}
            placeholder={t('editor.itemPlaceholder', { index: i + 1 })}
          />
          <div className="order-editor-controls">
            <button className="btn btn-ghost btn-sm" disabled={i === 0} onClick={() => moveItem(i, -1)}>↑</button>
            <button className="btn btn-ghost btn-sm" disabled={i === items.length - 1} onClick={() => moveItem(i, 1)}>↓</button>
            <button className="btn btn-ghost btn-sm" onClick={() => removeItem(i)}>✕</button>
          </div>
        </div>
      ))}
      <button className="btn btn-sm" onClick={addItem} style={{ marginTop: 4 }}>{t('editor.addItem')}</button>

      {items.length > 0 && (
        <div style={{ marginTop: 16 }}>
          <label className="question-form-label">{t('editor.correctOrder')}</label>
          <div className="choice-editor-row">
            {items.map((item, i) => (
              <span key={item.id} className="mono faint" style={{ fontSize: 13, marginRight: 4 }}>
                {i + 1}. {item.text || item.id}
              </span>
            ))}
          </div>
          <p className="faint" style={{ fontSize: 12, marginTop: 4 }}>
            {t('editor.correctOrderHint')}
          </p>
          {/* Sync answer to current item order */}
          <button
            className="btn btn-sm"
            style={{ marginTop: 8 }}
            onClick={() => onChange((q) => { q.answer = items.map((it) => it.id) })}
          >
            {t('editor.setCurrentOrder')}
          </button>
        </div>
      )}
    </div>
  )
}