package com.org.flashsalesystem.dto;

import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import java.math.BigDecimal;
import java.time.LocalDateTime;

/**
 * 订单数据传输对象
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public class OrderDTO {

    private Long id;
    private Long userId;
    private String username;
    private Long productId;
    private String productName;
    private String productImageUrl;
    private Integer quantity;
    private BigDecimal totalPrice;
    private Integer status;
    private String statusDescription;
    private Integer orderType;
    private String orderTypeDescription;

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime createdAt;

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime updatedAt;

    /**
     * 创建订单DTO
     */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public static class CreateDTO {
        @NotNull(message = "商品ID不能为空")
        private Long productId;

        @Min(value = 1, message = "商品数量必须大于0")
        private Integer quantity;

        // 收货地址信息
        private String receiverName;
        private String receiverPhone;
        private String receiverAddress;

        // 备注
        private String remark;
    }

    /**
     * 订单查询DTO
     */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public static class QueryDTO {
        private Long userId;
        private Integer status;
        private Integer orderType;

        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
        private LocalDateTime startTime;

        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
        private LocalDateTime endTime;
        private Integer page = 0;
        private Integer size = 10;
        private String sortBy = "createdAt";
        private String sortDirection = "desc";
    }

    /**
     * 订单状态更新DTO
     */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public static class StatusUpdateDTO {
        @NotNull(message = "订单ID不能为空")
        private Long orderId;

        @NotNull(message = "订单状态不能为空")
        private Integer status;

        private String remark;
    }

    /**
     * 批量订单操作DTO
     */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public static class BatchOperationDTO {
        @NotNull(message = "订单ID列表不能为空")
        private java.util.List<Long> orderIds;

        /**
         * 操作类型：cancel-取消，pay-支付，ship-发货，complete-完成
         */
        @NotNull(message = "操作类型不能为空")
        private String operation;

        private String remark;
    }

    /**
     * 订单统计DTO
     */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    public static class StatisticsDTO {
        private Long totalOrders;
        private Long pendingPaymentOrders;
        private Long paidOrders;
        private Long shippedOrders;
        private Long completedOrders;
        private Long cancelledOrders;
        private BigDecimal totalAmount;
        private BigDecimal todayAmount;
        private Long flashSaleOrders;
        private Long normalOrders;
    }
}