# QuestionSerializer

问题的详细定义

## Attribute

```ts
type QuestionSerializer =
  | ChoiceQuestionSerializer
  | TrueOrFalseQuestionSerializer;

type QuestionWithoutAnswerSerializer = Omit<
  QuestionSerializer,
  "answer" | "analysis"
>;

type QuestionWithStudentAnswerSerializer =
  | ChoiceQuestionWithStudentAnswer
  | TrueOrFalseQuestionWithStudentAnswer;

interface Question {
  id: number; // 题目id
  kind: "CHOICE" | "TRUE_FALSE";
  stem: string; // 题干
}

interface ChoiceQuestionSerializer extends Question {
  kind: "CHOICE";
  options: {
    [key: string]: string;
  };
  answer: string; // 答案 [与 options 的 key 一致]
  analysis?: string; // 解析
}

interface ChoiceQuestionWithStudentAnswer extends ChoiceQuestionSerializer {
  studentAnswer: string;
  pass: boolean; // 是否正确
}

interface TrueOrFalseQuestionSerializer extends Question {
  kind: "TRUE_FALSE";
  answer: boolean; // 答案
  analysis?: string; // 解析
}

interface TrueOrFalseQuestionWithStudentAnswer
  extends TrueOrFalseQuestionSerializer {
  studentAnswer: boolean;
  pass: boolean; // 是否正确
}
```