fix issues

internal/competition/handler/grpc/competition.go

@@ -5,11 +5,13 @@ import (
 
 	"datarush/internal/competition/domain"
 	pb "datarush/pkg/api/competition"
+	"strings"
+
 	"github.com/google/uuid"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
 	"google.golang.org/protobuf/types/known/timestamppb"
-	"strings"
 )
 
 // ICompetitionService defines the interface for business logic.
@@ -72,7 +74,7 @@ func (h *CompetitionHandler) EditCompetition(ctx context.Context, req *pb.Compet
 	return fromDomainCompetition(updatedComp), nil
 }
 
-func (h *CompetitionHandler) DeleteCompetition(ctx context.Context, req *pb.DeleteCompetitionRequest) (*pb.DeleteCompetitionResponse, error) {
+func (h *CompetitionHandler) DeleteCompetition(ctx context.Context, req *pb.DeleteCompetitionRequest) (*emptypb.Empty, error) {
 	id, err := uuid.Parse(req.GetCompetitionId())
 	if err != nil {
 		return nil, status.Errorf(codes.InvalidArgument, "invalid competition id format")
@@ -80,7 +82,7 @@ func (h *CompetitionHandler) DeleteCompetition(ctx context.Context, req *pb.Dele
 	if err := h.service.DeleteCompetition(ctx, id); err != nil {
 		return nil, status.Errorf(codes.Internal, "failed to delete competition: %v", err)
 	}
-	return &pb.DeleteCompetitionResponse{Success: true}, nil
+	return &emptypb.Empty{}, nil
 }
 
 func (h *CompetitionHandler) ListCompetitions(ctx context.Context, req *pb.ListCompetitionsRequest) (*pb.ListCompetitionsResponse, error) {
@@ -196,4 +198,4 @@ func toDomainCompetitionType(ct pb.CompetitionType) domain.CompetitionType {
 
 func fromDomainCompetitionType(ct domain.CompetitionType) pb.CompetitionType {
 	return pb.CompetitionType(pb.CompetitionType_value["COMPETITION_TYPE_"+string(ct)])
-}
+}

internal/competition/repository/postgres/competition.go

@@ -18,14 +18,12 @@ const (
 	competitionCachePrefix = "competition:"
 )
 
-
 type CompetitionRepository struct {
-	db *sql.DB
+	db          *sql.DB
 	redisClient *redis.Client
 	cacheEnabled bool
 }
 
-
 func NewCompetitionRepository(db *sql.DB, redisClient *redis.Client, cacheEnabled bool) repository.CompetitionRepository {
 	return &CompetitionRepository{
 		db:           db,
@@ -149,7 +147,7 @@ func (r *CompetitionRepository) Delete(ctx context.Context, id uuid.UUID) error
 
 	return nil
 }
-func (r *CompetitionRepository) List(ctx context.Context, opts repository.ListCompetitionsOptions) ([]*domain.Competition, int, error) {
+func (r *CompetitionRepository) List(ctx context.Context, opts repository.ListCompetitionsOptions) ([]domain.Competition, int, error) {
 	var args []interface{}
 	var whereClauses []string
 	argId := 1
@@ -200,7 +198,7 @@ func (r *CompetitionRepository) List(ctx context.Context, opts repository.ListCo
 	}
 	defer rows.Close()
 
-	var competitions []*domain.Competition
+	var competitions []domain.Competition
 	for rows.Next() {
 		var c domain.Competition
 		err := rows.Scan(
@@ -219,7 +217,7 @@ func (r *CompetitionRepository) List(ctx context.Context, opts repository.ListCo
 		if err != nil {
 			return nil, 0, err
 		}
-		competitions = append(competitions, &c)
+		competitions = append(competitions, c)
 	}
 
 	return competitions, total, nil
@@ -237,4 +235,4 @@ func (r *CompetitionRepository) ChangeState(ctx context.Context, id uuid.UUID, s
 	}
 
 	return r.Get(ctx, id)
-}
+}

internal/competition/server/server.go

@@ -1,7 +1,6 @@
 package server
 
 import (
-	"context"
 	"fmt"
 	"log"
 	"net"
@@ -14,11 +13,9 @@ import (
 	"datarush/internal/competition/service"
 	pb "datarush/pkg/api/competition"
 
-	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/reflection"
 )
 
@@ -54,12 +51,6 @@ func (s *Server) Start() error {
 		}
 	}()
 
-	go func() {
-		if err := s.startHTTPServer(); err != nil {
-			log.Fatalf("failed to start HTTP server: %v", err)
-		}
-	}()
-
 	log.Println("competition service started")
 	return nil
 }
@@ -89,50 +80,13 @@ func (s *Server) registerGRPCServices() {
 	}
 }
 
-func (s *Server) startHTTPServer() error {
-	ctx := context.Background()
-	ctx, cancel := context.WithCancel(ctx)
-	defer cancel()
-
-	mux := runtime.NewServeMux()
-	opts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
-	grpcEndpoint := fmt.Sprintf("localhost:%d", s.config.GRPCPort)
-
-	err := pb.RegisterCompetitionServiceHandlerFromEndpoint(ctx, mux, grpcEndpoint, opts)
-	if err != nil {
-		return fmt.Errorf("failed to register http handlers: %w", err)
-	}
-
-	s.httpServer = &http.Server{
-		Addr:         fmt.Sprintf(":%d", s.config.HTTPPort),
-		Handler:      mux,
-		ReadTimeout:  httpReadTimeout,
-		WriteTimeout: httpWriteTimeout,
-		IdleTimeout:  httpIdleTimeout,
-	}
-
-	log.Printf("starting HTTP server on port %d", s.config.HTTPPort)
-	return s.httpServer.ListenAndServe()
-}
-
 func (s *Server) Stop() {
 	log.Println("shutting down competition server...")
 
-	// Shutdown HTTP server
-	if s.httpServer != nil {
-		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-		defer cancel()
-		if err := s.httpServer.Shutdown(ctx); err != nil {
-			log.Printf("failed to shutdown HTTP server gracefully: %v", err)
-		}
-	}
-
-	// Shutdown gRPC server
 	if s.grpcServer != nil {
 		s.grpcServer.GracefulStop()
 	}
 
-	// Close database connection
 	if s.db != nil {
 		if err := s.db.Close(); err != nil {
 			log.Printf("failed to close database connection: %v", err)