package com.lincfusion.udyamlinc.manualentry;

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

import java.math.BigDecimal;
import java.time.LocalDate;

/**
 * One row of an upload, kept whether or not it was accepted.
 *
 * <p>A rejected row is data too: "we uploaded four hundred rows and three
 * hundred silently vanished" is the failure this table exists to prevent. Each
 * rejection carries the reason that produced it.
 *
 * <p>{@code priorModalPrice} records what an accepted row displaced, because a
 * correction is only auditable if the thing it corrected is still legible.
 */
@Entity
@Table(name = "manual_entry_line", indexes = {
        @Index(name = "ix_manual_line_batch", columnList = "batchId"),
})
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class ManualEntryLine {

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

    @Column(nullable = false)
    private Long batchId;

    /** 1-based row number in the uploaded file, so a reject points somewhere. */
    @Column(nullable = false)
    private Integer rowNumber;

    // ── as supplied, before resolution ──────────────────────

    @Column(length = 64)
    private String rawDistrict;

    @Column(length = 64)
    private String rawCommodity;

    @Column(length = 32)
    private String rawEffectiveDate;

    @Column(length = 32)
    private String rawModalPrice;

    /**
     * The whole row as supplied, as JSON. Commit reads its columns from here
     * rather than from a re-parse of a file nobody kept, and an auditor asking
     * what the bank actually sent gets the row rather than our reading of it.
     */
    @Column(columnDefinition = "text")
    private String rawRow;

    // ── as resolved ─────────────────────────────────────────

    private Long districtId;
    private Long commodityId;

    /** The date the fact describes, as entered. Never the upload time. */
    private LocalDate effectiveDate;

    /** Monday of the ISO week {@link #effectiveDate} falls in. */
    private LocalDate weekStart;

    @Column(precision = 12, scale = 2)
    private BigDecimal modalPrice;

    @Column(precision = 12, scale = 2)
    private BigDecimal minPrice;

    @Column(precision = 12, scale = 2)
    private BigDecimal maxPrice;

    @Column(length = 16)
    private String unit;

    // ── verdict ─────────────────────────────────────────────

    @Column(nullable = false)
    private boolean accepted;

    /**
     * UNKNOWN_DISTRICT | UNKNOWN_COMMODITY | FUTURE_DATE | BAD_DATE | BAD_NUMBER
     * | UNIT_MISMATCH | PRICE_ORDER | DUPLICATE_IN_FILE | MISSING_REQUIRED
     */
    @Column(length = 32)
    private String rejectReason;

    @Column(length = 300)
    private String rejectDetail;

    /** Set when the row is accepted but sits outside the sanity band. Not a rejection. */
    @Column(length = 300)
    private String warning;

    /** True when committing this row replaces an existing manual value. */
    private boolean overwriting;

    @Column(precision = 12, scale = 2)
    private BigDecimal priorModalPrice;
}