package com.nju.edu.eval.data.entity;

import com.fasterxml.jackson.annotation.JsonFormat;
import com.nju.edu.eval.publicdatas.enums.ExamState;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;

import javax.persistence.*;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author mars
 */
@Data
@Entity
@EqualsAndHashCode
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "exam")
public class Exam {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    @Column(name = "exam_name")
    private String examName;

    private String position;

    @ElementCollection
    @CollectionTable(name = "skill_of_exam", joinColumns = @JoinColumn(name = "exam_id"))
    @Column(name = "skill")
    private  List<String> skills;

    @Column(name = "expected_difficulty")
    private int difficulty;

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date startTime;

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date endTime;

    private String comment;

    private String inviteCode = "";

    @Column(name = "is_invigilate")
    private Integer antiCheating;

    /**
     * 是否需要邀请码参加考试
     */
    @Column(name = "is_public")
    private Integer isPublic;

//    @ElementCollection
//    @CollectionTable(name = "question_id_of_exam",
//            joinColumns = @JoinColumn(name = "exam_id"))
//    @Column(name = "question_id")
//    private  List<String> questionIds;

    /**
     * 试卷中题目id - 题目分值的map
     */
    @ElementCollection
    @CollectionTable(name = "question_score_of_exam", joinColumns = @JoinColumn(name = "exam_id"))
    @MapKeyColumn(name="question_id")
    @Column(name="score")
    private Map<String, Double> questionAndScore = new HashMap<>();

    /**
     * 考试创建者
     */
    @ManyToOne(cascade = CascadeType.DETACH, fetch = FetchType.LAZY)
    @JoinColumn(name = "creator_id")
    private User creator;

    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "general_report_id")
    private GeneralReport generalReport;

//    private List<Question>

    public Exam(String examName, String position, List<String> skills, Date startTime, Date endTime, String comment, User user) {
        this.examName = examName;
        this.position = position;
        this.skills = skills;
        this.startTime = startTime;
        this.endTime = endTime;
        this.comment = comment;
        this.creator = user;
    }

    public ExamState getState() {
        Date date = new Date();
        if (this.startTime.after(date)) {
            return ExamState.NOT_STARTED;
        }
        if (this.endTime.before(date)) {
            return ExamState.OVER;
        }
        return ExamState.IN_PROGRESS;
    }
}