package com.kaidi.oa.domain;

import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Table;

import java.math.BigDecimal;
import java.time.Instant;

/**
 * 应收/应付款项（财务管理·往来核算）。一条 ArApItem 代表一笔往来账：
 * arApType 类型（应收 / 应付）；partyName 往来单位（客户/供应商）；
 * relatedRef 关联合同号或发票号；amount 款项金额；writtenOff 已核销；
 * unwrittenOff 未核销（= 金额 - 已核销，服务端维护）；status 流转
 * 未核销 → 部分核销 → 已结清（全核销即「已结清」）；dueDate 账期；overdue 是否逾期（按账期）。
 */
@Entity
@Table(name = "ar_ap_item")
public class ArApItem {

    public static final String T_AR = "应收";
    public static final String T_AP = "应付";

    public static final String S_OPEN = "未核销";
    public static final String S_PARTIAL = "部分核销";
    public static final String S_SETTLED = "已结清";

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

    private String code;

    /** 类型：应收 / 应付。 */
    private String arApType;

    /** 往来单位（客户 / 供应商）。 */
    private String partyName;

    /** 关联合同号或发票号。 */
    private String relatedRef;

    /** 关联合同 id（可空）。 */
    private Long contractId;

    /** 关联发票 id（可空）。 */
    private Long invoiceId;

    /** 款项金额。 */
    private BigDecimal amount = BigDecimal.ZERO;

    /** 已核销金额。 */
    private BigDecimal writtenOff = BigDecimal.ZERO;

    /** 未核销金额（= 金额 - 已核销）。 */
    private BigDecimal unwrittenOff = BigDecimal.ZERO;

    /** 未核销 / 部分核销 / 已结清。 */
    private String status;

    private String dueDate;

    private String companySubject;

    private String owner;

    private String remark;

    private Instant createdAt;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getArApType() {
        return arApType;
    }

    public void setArApType(String arApType) {
        this.arApType = arApType;
    }

    public String getPartyName() {
        return partyName;
    }

    public void setPartyName(String partyName) {
        this.partyName = partyName;
    }

    public String getRelatedRef() {
        return relatedRef;
    }

    public void setRelatedRef(String relatedRef) {
        this.relatedRef = relatedRef;
    }

    public Long getContractId() {
        return contractId;
    }

    public void setContractId(Long contractId) {
        this.contractId = contractId;
    }

    public Long getInvoiceId() {
        return invoiceId;
    }

    public void setInvoiceId(Long invoiceId) {
        this.invoiceId = invoiceId;
    }

    public BigDecimal getAmount() {
        return amount;
    }

    public void setAmount(BigDecimal amount) {
        this.amount = amount;
    }

    public BigDecimal getWrittenOff() {
        return writtenOff;
    }

    public void setWrittenOff(BigDecimal writtenOff) {
        this.writtenOff = writtenOff;
    }

    public BigDecimal getUnwrittenOff() {
        return unwrittenOff;
    }

    public void setUnwrittenOff(BigDecimal unwrittenOff) {
        this.unwrittenOff = unwrittenOff;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getDueDate() {
        return dueDate;
    }

    public void setDueDate(String dueDate) {
        this.dueDate = dueDate;
    }

    public String getCompanySubject() {
        return companySubject;
    }

    public void setCompanySubject(String companySubject) {
        this.companySubject = companySubject;
    }

    public String getOwner() {
        return owner;
    }

    public void setOwner(String owner) {
        this.owner = owner;
    }

    public String getRemark() {
        return remark;
    }

    public void setRemark(String remark) {
        this.remark = remark;
    }

    public Instant getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(Instant createdAt) {
        this.createdAt = createdAt;
    }
}