refactor:

internal/services/tester.go

@@ -0,0 +1,30 @@
+package services
+
+import (
+	"context"
+	"git.sch9.ru/new_gate/ms-tester/internal/models"
+)
+
+type ProblemStorage interface {
+	CreateProblem(ctx context.Context, problem *models.Problem) (int32, error)
+	ReadProblem(ctx context.Context, id int32) (*models.Problem, error)
+	UpdateProblem(ctx context.Context, problem *models.Problem) error
+	DeleteProblem(ctx context.Context, id int32) error
+}
+
+type ProblemService struct {
+	problemStorage ProblemStorage
+}
+
+func NewProblemService(
+	problemStorage ProblemStorage,
+) *ProblemService {
+	return &ProblemService{
+		problemStorage: problemStorage,
+	}
+}
+
+func (service *ProblemService) CreateProblem(ctx context.Context, problem *models.Problem) (int32, error) {
+	userId := ctx.Value("user_id").(int32)
+	return service.problemStorage.CreateProblem(ctx, problem)
+}