package com.lincfusion.udyamlinc.master;

import jakarta.persistence.*;
import lombok.*;

/**
 * The join key for every external signal. Mandi prices and climate series are
 * pulled per district, never per enterprise — that is what keeps ingestion to
 * roughly forty rows a day instead of one call per enterprise.
 */
@Entity
@Table(name = "district", indexes = @Index(name = "ix_district_code", columnList = "code", unique = true))
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class District {

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

    /** SEHORE, VIDISHA… */
    @Column(nullable = false, unique = true, length = 32)
    private String code;

    @Column(nullable = false, length = 64)
    private String name;

    @Column(length = 64)
    private String nameHi;

    @Column(nullable = false, length = 64)
    private String state;

    /** District centroid — used to pick the climate grid cell. */
    private Double latitude;

    private Double longitude;

    private Boolean active;

    @PrePersist
    void onCreate() {
        if (active == null) active = Boolean.TRUE;
    }
}