package agent

import (
	"context"
	"ycc-server/app/main/model"
	"ycc-server/common/ctxdata"
	"ycc-server/common/globalkey"
	"ycc-server/common/xerr"

	"github.com/pkg/errors"

	"ycc-server/app/main/api/internal/svc"
	"ycc-server/app/main/api/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetCommissionListLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetCommissionListLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetCommissionListLogic {
	return &GetCommissionListLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetCommissionListLogic) GetCommissionList(req *types.GetCommissionListReq) (resp *types.GetCommissionListResp, err error) {
	userID, err := ctxdata.GetUidFromCtx(l.ctx)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "获取用户信息失败, %v", err)
	}

	// 1. 获取代理信息
	agent, err := l.svcCtx.AgentModel.FindOneByUserId(l.ctx, userID)
	if err != nil {
		if errors.Is(err, model.ErrNotFound) {
			return nil, errors.Wrapf(xerr.NewErrMsg("您不是代理"), "")
		}
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询代理信息失败, %v", err)
	}

	// 2. 构建查询条件
	builder := l.svcCtx.AgentCommissionModel.SelectBuilder().
		Where("agent_id = ? AND del_state = ?", agent.Id, globalkey.DelStateNo).
		OrderBy("create_time DESC")

	// 3. 分页查询
	page := req.Page
	if page <= 0 {
		page = 1
	}
	pageSize := req.PageSize
	if pageSize <= 0 {
		pageSize = 20
	}
	offset := (page - 1) * pageSize

	// 4. 查询总数
	total, err := l.svcCtx.AgentCommissionModel.FindCount(l.ctx, builder, "id")
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询佣金总数失败, %v", err)
	}

	// 5. 查询列表
	builder = builder.Limit(uint64(pageSize)).Offset(uint64(offset))
	commissions, err := l.svcCtx.AgentCommissionModel.FindAll(l.ctx, builder, "")
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询佣金列表失败, %v", err)
	}

	// 6. 组装响应
	var list []types.CommissionItem
	for _, commission := range commissions {
		// 查询产品名称
		productName := ""
		if commission.ProductId != "" {
			product, err := l.svcCtx.ProductModel.FindOne(l.ctx, commission.ProductId)
			if err == nil {
				productName = product.ProductName
			}
		}

		// 查询订单号
		orderNo := ""
		if commission.OrderId != "" {
			order, err := l.svcCtx.OrderModel.FindOne(l.ctx, commission.OrderId)
			if err == nil {
				orderNo = order.OrderNo
			}
		}

		list = append(list, types.CommissionItem{
			Id:          commission.Id,
			OrderId:     commission.OrderId,
			OrderNo:     orderNo,
			ProductName: productName,
			Amount:      commission.Amount,
			Status:      commission.Status,
			CreateTime:  commission.CreateTime.Format("2006-01-02 15:04:05"),
		})
	}

	return &types.GetCommissionListResp{
		Total: total,
		List:  list,
	}, nil
}