package nju.seec.helper.vo.question;

import lombok.Data;
import lombok.NonNull;
import nju.seec.helper.enums.ExceptionType;
import nju.seec.helper.enums.QuestionType;
import nju.seec.helper.exception.HelperException;

import java.util.Date;
import java.util.Set;

/**
 * @author XuShengTao
 * <p>
 * updated by cst
 */
@Data
public abstract class BaseQuestionVO {
    protected String id;
    protected QuestionType type;
    protected String stem;
    protected String analysis;
    protected String keyPoints;
    protected Set<String> tags;
    protected Set<String> knowledgeId;
    private Date lastModified;

    public static BaseQuestionVO convertBokQuestionToVO(@NonNull BokQuestion bokQuestion, boolean withAnswer) {
        switch (bokQuestion.getType()) {
            case "choice":
                return new ChoiceQuestionVO(bokQuestion, withAnswer);
            case "true_false":
                return new TrueOrFalseQuestionVO(bokQuestion, withAnswer);
            default:
                throw HelperException.of(ExceptionType.ERROR, "无法解析该题目");
        }
    }

    public BaseQuestionVO(BokQuestion bokQuestion) {
        this.id = bokQuestion.getId();
        this.stem = bokQuestion.getStem();
        this.keyPoints = bokQuestion.getKeyPoints();
        this.tags = bokQuestion.getTags();
        this.knowledgeId = bokQuestion.getKnowledgeId();
        this.lastModified = bokQuestion.getLastModified();
    }

    /**
     * 检查答案是否正确
     *
     * @param answer 答案
     * @return 是否正确
     */
    public abstract boolean pass(Object answer);
}