package com.openisle.model;

import jakarta.persistence.*;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

import java.util.HashSet;
import java.util.Set;

import com.openisle.model.Tag;


import java.time.LocalDateTime;

/**
 * Post entity representing an article posted by a user.
 */
@Entity
@Getter
@Setter
@NoArgsConstructor
@Table(name = "posts")
public class Post {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false)
    private String title;

    @Column(nullable = false, columnDefinition = "TEXT")
    private String content;

    @Column(nullable = false)
    private LocalDateTime createdAt;

    @ManyToOne(optional = false, fetch = FetchType.LAZY)
    @JoinColumn(name = "author_id")
    private User author;

    @ManyToOne(optional = false, fetch = FetchType.LAZY)
    @JoinColumn(name = "category_id")
    private Category category;

    @ManyToMany(fetch = FetchType.LAZY)
    @JoinTable(name = "post_tags",
            joinColumns = @JoinColumn(name = "post_id"),
            inverseJoinColumns = @JoinColumn(name = "tag_id"))
    private java.util.Set<Tag> tags = new java.util.HashSet<>();

    @Column(nullable = false)
    private long views = 0;

    @Enumerated(EnumType.STRING)
    @Column(nullable = false)
    private PostStatus status = PostStatus.PUBLISHED;

    @PrePersist
    protected void onCreate() {
        this.createdAt = LocalDateTime.now();
    }
}