import type { IPracticeCheck } from '@/types/practice.ts'
import type { IQuestion } from '@/types/question.ts'

export const isAnswerCorrect = (answer: string[], select: string[]): boolean => {
  const normAnswer = Array.from(new Set(answer)).sort()
  const normSelect = Array.from(new Set(select)).sort()

  if (normAnswer.length !== normSelect.length) {
    return false
  }

  return normAnswer.every((v, i) => v === normSelect[i])
}

export const optLetter = (index: number): string => {
  return String.fromCharCode(65 + index)
}

export const getMistakeList = (questions: IQuestion[],
  checks: IPracticeCheck[]): IQuestion[] => {
  const checkMap = new Map<number, IPracticeCheck>()
  checks.forEach((c) => checkMap.set(c.id, c))

  return questions.filter((q) => {
    const check = checkMap.get(q.id)
    return !check || !check.isCorrect
  })
}