package nju.seec.helper.entity;

import lombok.Data;
import lombok.experimental.Accessors;
import nju.seec.helper.enums.QuizState;
import nju.seec.helper.enums.QuizType;
import org.hibernate.annotations.*;

import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.ForeignKey;
import javax.persistence.Table;
import javax.persistence.*;
import java.time.LocalDateTime;
import java.util.List;

/**
 * @author sheen
 * <p>
 * updated by cst
 */
@Data
@Accessors(chain = true)
@Entity
@Table(name = "quiz", uniqueConstraints = @UniqueConstraint(name = "quiz_name_unique", columnNames = {"delete_at", "slide_id", "name",}))
@DynamicInsert
@DynamicUpdate
@Where(clause = "delete_at = 0 and slide_id in (select s.id from slide s where s.delete_at = 0) and course_id in (select c.id from course c where c.delete_at = 0)")
//@Cacheable
//@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Quiz {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Long id;

    @Basic
    @Column(name = "name", nullable = false)
    private String name;

    @ManyToOne(cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.LAZY)
    @JoinColumn(name = "course_id", foreignKey = @ForeignKey(name = "quiz_course"))
    private Course course;

    @ManyToOne(cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.LAZY)
    @JoinColumn(name = "slide_id", foreignKey = @ForeignKey(name = "quiz_slide"))
    private Slide slide;

    @ManyToOne(cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.LAZY)
    @JoinColumn(name = "teacher_id", foreignKey = @ForeignKey(name = "quiz_teacher"))
    private User teacher;

    @Type(type = "json")
    @Column(columnDefinition = "json", nullable = false)
    private List<String> questions;

    @Enumerated(value = EnumType.STRING)
    @Column(name = "type", nullable = false)
    private QuizType type;

    @Enumerated(value = EnumType.STRING)
    @Column(name = "state", nullable = false)
    private QuizState state;

    @Column(name = "max_submit_number", nullable = false)
    private Integer maxSubmitNumber;

    @Column(name = "create_at", nullable = false, updatable = false)
    @CreationTimestamp
    private LocalDateTime createAt;

    @Column(name = "update_at", nullable = false)
    @UpdateTimestamp
    private LocalDateTime updateAt;

    @ColumnDefault("0")
    @Column(name = "delete_at", nullable = false)
    private Long deleteAt = 0L;
}