feat: 实现运营商模块重构，添加冗余字段优化查询性能

主要变更：
- 新增 Carrier CRUD API（创建、列表、详情、更新、删除、状态更新）
- IotCard/IotCardImportTask 添加 carrier_type/carrier_name 冗余字段
- 移除 Carrier 表的 channel_name/channel_code 字段
- 查询时直接使用冗余字段，避免 JOIN Carrier 表
- 添加数据库迁移脚本（000021-000023）
- 添加单元测试和集成测试
- 同步更新 OpenAPI 文档和 specs

internal/service/carrier/service.go

@@ -0,0 +1,182 @@
+package carrier
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"gorm.io/gorm"
+
+	"github.com/break/junhong_cmp_fiber/internal/model"
+	"github.com/break/junhong_cmp_fiber/internal/model/dto"
+	"github.com/break/junhong_cmp_fiber/internal/store"
+	"github.com/break/junhong_cmp_fiber/internal/store/postgres"
+	"github.com/break/junhong_cmp_fiber/pkg/constants"
+	"github.com/break/junhong_cmp_fiber/pkg/errors"
+	"github.com/break/junhong_cmp_fiber/pkg/middleware"
+)
+
+type Service struct {
+	carrierStore *postgres.CarrierStore
+}
+
+func New(carrierStore *postgres.CarrierStore) *Service {
+	return &Service{carrierStore: carrierStore}
+}
+
+func (s *Service) Create(ctx context.Context, req *dto.CreateCarrierRequest) (*dto.CarrierResponse, error) {
+	currentUserID := middleware.GetUserIDFromContext(ctx)
+	if currentUserID == 0 {
+		return nil, errors.New(errors.CodeUnauthorized, "未授权访问")
+	}
+
+	existing, _ := s.carrierStore.GetByCode(ctx, req.CarrierCode)
+	if existing != nil {
+		return nil, errors.New(errors.CodeCarrierCodeExists, "运营商编码已存在")
+	}
+
+	carrier := &model.Carrier{
+		CarrierCode: req.CarrierCode,
+		CarrierName: req.CarrierName,
+		CarrierType: req.CarrierType,
+		Description: req.Description,
+		Status:      constants.StatusEnabled,
+	}
+	carrier.Creator = currentUserID
+
+	if err := s.carrierStore.Create(ctx, carrier); err != nil {
+		return nil, fmt.Errorf("创建运营商失败: %w", err)
+	}
+
+	return s.toResponse(carrier), nil
+}
+
+func (s *Service) Get(ctx context.Context, id uint) (*dto.CarrierResponse, error) {
+	carrier, err := s.carrierStore.GetByID(ctx, id)
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, errors.New(errors.CodeCarrierNotFound, "运营商不存在")
+		}
+		return nil, fmt.Errorf("获取运营商失败: %w", err)
+	}
+	return s.toResponse(carrier), nil
+}
+
+func (s *Service) Update(ctx context.Context, id uint, req *dto.UpdateCarrierRequest) (*dto.CarrierResponse, error) {
+	currentUserID := middleware.GetUserIDFromContext(ctx)
+	if currentUserID == 0 {
+		return nil, errors.New(errors.CodeUnauthorized, "未授权访问")
+	}
+
+	carrier, err := s.carrierStore.GetByID(ctx, id)
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, errors.New(errors.CodeCarrierNotFound, "运营商不存在")
+		}
+		return nil, fmt.Errorf("获取运营商失败: %w", err)
+	}
+
+	if req.CarrierName != nil {
+		carrier.CarrierName = *req.CarrierName
+	}
+	if req.Description != nil {
+		carrier.Description = *req.Description
+	}
+	carrier.Updater = currentUserID
+
+	if err := s.carrierStore.Update(ctx, carrier); err != nil {
+		return nil, fmt.Errorf("更新运营商失败: %w", err)
+	}
+
+	return s.toResponse(carrier), nil
+}
+
+func (s *Service) Delete(ctx context.Context, id uint) error {
+	_, err := s.carrierStore.GetByID(ctx, id)
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return errors.New(errors.CodeCarrierNotFound, "运营商不存在")
+		}
+		return fmt.Errorf("获取运营商失败: %w", err)
+	}
+
+	if err := s.carrierStore.Delete(ctx, id); err != nil {
+		return fmt.Errorf("删除运营商失败: %w", err)
+	}
+
+	return nil
+}
+
+func (s *Service) List(ctx context.Context, req *dto.CarrierListRequest) ([]*dto.CarrierResponse, int64, error) {
+	opts := &store.QueryOptions{
+		Page:     req.Page,
+		PageSize: req.PageSize,
+		OrderBy:  "id DESC",
+	}
+	if opts.Page == 0 {
+		opts.Page = 1
+	}
+	if opts.PageSize == 0 {
+		opts.PageSize = constants.DefaultPageSize
+	}
+
+	filters := make(map[string]interface{})
+	if req.CarrierType != nil {
+		filters["carrier_type"] = *req.CarrierType
+	}
+	if req.CarrierName != nil {
+		filters["carrier_name"] = *req.CarrierName
+	}
+	if req.Status != nil {
+		filters["status"] = *req.Status
+	}
+
+	carriers, total, err := s.carrierStore.List(ctx, opts, filters)
+	if err != nil {
+		return nil, 0, fmt.Errorf("查询运营商列表失败: %w", err)
+	}
+
+	responses := make([]*dto.CarrierResponse, len(carriers))
+	for i, c := range carriers {
+		responses[i] = s.toResponse(c)
+	}
+
+	return responses, total, nil
+}
+
+func (s *Service) UpdateStatus(ctx context.Context, id uint, status int) error {
+	currentUserID := middleware.GetUserIDFromContext(ctx)
+	if currentUserID == 0 {
+		return errors.New(errors.CodeUnauthorized, "未授权访问")
+	}
+
+	carrier, err := s.carrierStore.GetByID(ctx, id)
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return errors.New(errors.CodeCarrierNotFound, "运营商不存在")
+		}
+		return fmt.Errorf("获取运营商失败: %w", err)
+	}
+
+	carrier.Status = status
+	carrier.Updater = currentUserID
+
+	if err := s.carrierStore.Update(ctx, carrier); err != nil {
+		return fmt.Errorf("更新运营商状态失败: %w", err)
+	}
+
+	return nil
+}
+
+func (s *Service) toResponse(c *model.Carrier) *dto.CarrierResponse {
+	return &dto.CarrierResponse{
+		ID:          c.ID,
+		CarrierCode: c.CarrierCode,
+		CarrierName: c.CarrierName,
+		CarrierType: c.CarrierType,
+		Description: c.Description,
+		Status:      c.Status,
+		CreatedAt:   c.CreatedAt.Format(time.RFC3339),
+		UpdatedAt:   c.UpdatedAt.Format(time.RFC3339),
+	}
+}