package com.geosegbar.entities;

import java.time.LocalDateTime;
import java.util.HashSet;
import java.util.Set;

import com.fasterxml.jackson.annotation.JsonIgnore;

import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.FetchType;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Index;
import jakarta.persistence.OneToMany;
import jakarta.persistence.PrePersist;
import jakarta.persistence.Table;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Entity
@Data
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "levels", indexes = {
    @Index(name = "idx_level_name", columnList = "name", unique = true),
    @Index(name = "idx_level_value", columnList = "value")
})
public class LevelEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false)
    private String name;

    @Column(nullable = false)
    private Double value;

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

    @Column(name = "created_at")
    private LocalDateTime createdAt;

    @JsonIgnore
    @OneToMany(mappedBy = "level", fetch = FetchType.LAZY)
    private Set<ReservoirEntity> reservoirs = new HashSet<>();

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