adm-vehicle-style/impl/v1/brand/list.go

package brand

import (
	"context"
	"encoding/json"
	"fmt"

	"adm-vehicle-style/consts"
	"adm-vehicle-style/errors"
	"adm-vehicle-style/model"
	v1 "adm-vehicle-style/pb/v1"
	"adm-vehicle-style/utils"

	"git.getensh.com/common/gopkgsv2/database"
	"git.getensh.com/common/gopkgsv2/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
	"gorm.io/gorm"
)

func List(ctx context.Context, req *v1.BrandListRequest) (reply *v1.BrandListReply, err error) {
	reply = &v1.BrandListReply{}

	// 捕获各个task中的异常并返回给调用者
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	db := database.DB()
	if req.BrandName != "" {
		db = db.Where("brand_name = ?", req.BrandName)
	}

	if req.BrandId != "" {
		db = db.Where("brand_id = ?", req.BrandId)
	}

	if req.Initial != "" {
		db = db.Where("initial = ?", req.Initial)
	}

	if req.OldBrandName != ""{
		db = db.Where("old_brand_name like ?", "%"+req.OldBrandName+"%")
		//db = db.Where("old_brand_name = ?", req.OldBrandName)
	}

	if req.HasImg == -1 {
		db = db.Where("has_img = 0")
	} else if req.HasImg == 1 {
		db = db.Where("has_img = 1")
	}

	if req.Status == -1 {
		db = db.Where("status = 0")
	} else if req.Status == 1 {
		db = db.Where("status = 1")
	}

	pageSize := consts.PageSize
	if req.PageSize != 0 {
		pageSize = int(req.PageSize)
	}

	// 构造分页类
	pagination := model.NewPagination(int(req.Page), pageSize, 0).GetLimitOffset()

	count, err := model.NewSyBrand().Count(db)
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound || count == 0 {
		return reply, nil
	}

	list, err := model.NewSyBrand().List(db, pagination)
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound {
		return reply, nil
	}

	reply.List = make([]*v1.BrandList, 0, len(list))
	for _, v := range list {
		reply.List = append(reply.List, &v1.BrandList{
			Id:        v.ID,
			Initial:   v.Initial,
			BrandName: v.BrandName,
			BrandId:   v.BrandId,
			Weight:    v.Weight,
			HasImg:    v.HasImg,
			Status:    v.Status,
			Image:     utils.GetBrandLogoById(v.BrandId, int32(v.HasImg)),
			OldBrandName:v.OldBrandName,
		})
	}

	// 计算分页结果
	pagination.CalPage(int(count))

	reply.CurrentPage = int64(pagination.CurrentPage)
	reply.PerPage = int64(pagination.PerPage)
	reply.Total = int64(pagination.Total)
	reply.FirstPage = int64(pagination.FirstPage)
	reply.LastPage = int64(pagination.LastPage)
	reply.PrevPage = int64(pagination.PrevPage)
	reply.NextPage = int64(pagination.NextPage)

	return reply, err
}