adm-management/impl/v1/field_management/list.go

package field_management

import (
	"adm-management/consts"
	"adm-management/errors"
	"adm-management/model"
	v1 "adm-management/pb/v1"

	"context"

	"encoding/json"
	"fmt"

	"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 Field(ctx context.Context, req *v1.FieldRequest) (reply *v1.FieldReply, err error) {
	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"))
			}
		}
	}()

	reply = &v1.FieldReply{}

	db := database.DB()
	if req.Field != "" {
		db = db.Where("`field` like ?", "%"+req.Field+"%")
	}
	if req.Desc != "" {
		db = db.Where("`desc` like ?", "%"+req.Desc+"%")
	}
	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.NewFieldList().Count(db)
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

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

	list, err := model.NewFieldList().List(db, pagination)

	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound {
		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, nil
	}

	reply.List = make([]*v1.Field, 0, len(list))
	for _, v := range list {
		reply.List = append(reply.List, &v1.Field{
			Field: v.Field,
			Desc:  v.Desc,
			Type:  "string",
		})
	}

	// 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, nil
}