rewrite competition service: remove http related things

internal/competition/service/service.go

@@ -0,0 +1,78 @@
+package service
+
+import (
+	"context"
+
+	"datarush/internal/competition/repository"
+	pb "datarush/pkg/api/competition"
+
+	"github.com/google/uuid"
+	"google.golang.org/protobuf/types/known/emptypb"
+)
+
+type CompetitionService struct {
+	repo repository.CompetitionRepository
+}
+
+func NewCompetitionService(repo repository.CompetitionRepository) *CompetitionService {
+	return &CompetitionService{repo: repo}
+}
+
+func (s *CompetitionService) CreateCompetition(ctx context.Context, req *pb.Competition) (*pb.Competition, error) {
+	return s.repo.Create(ctx, req)
+}
+
+func (s *CompetitionService) GetCompetition(ctx context.Context, req *pb.GetCompetitionRequest) (*pb.Competition, error) {
+	id, err := uuid.Parse(req.CompetitionId)
+	if err != nil {
+		return nil, err
+	}
+	return s.repo.Get(ctx, id)
+}
+
+func (s *CompetitionService) EditCompetition(ctx context.Context, req *pb.Competition) (*pb.Competition, error) {
+	return s.repo.Update(ctx, req)
+}
+
+func (s *CompetitionService) DeleteCompetition(ctx context.Context, req *pb.DeleteCompetitionRequest) (*emptypb.Empty, error) {
+	id, err := uuid.Parse(req.CompetitionId)
+	if err != nil {
+		return nil, err
+	}
+	err = s.repo.Delete(ctx, id)
+	return &emptypb.Empty{}, err
+}
+
+func (s *CompetitionService) ListCompetitions(ctx context.Context, req *pb.ListCompetitionsRequest) (*pb.ListCompetitionsResponse, error) {
+	opts := repository.ListCompetitionsOptions{
+		Page:            int(req.PageToken),
+		PageSize:        int(req.PageSize),
+		State:           req.State,
+		IsParticipating: req.IsParticipating,
+		SearchQuery:     req.SearchQuery,
+	}
+
+	competitions, total, err := s.repo.List(ctx, opts)
+	if err != nil {
+		return nil, err
+	}
+
+	var nextPageToken int32
+	if (opts.Page+1)*opts.PageSize < total {
+		nextPageToken = int32(opts.Page + 1)
+	}
+
+	return &pb.ListCompetitionsResponse{
+		Competitions:  competitions,
+		TotalCount:    int32(total),
+		NextPageToken: nextPageToken,
+	}, nil
+}
+
+func (s *CompetitionService) ChangeCompetitionState(ctx context.Context, req *pb.ChangeCompetitionStateRequest) (*pb.Competition, error) {
+	id, err := uuid.Parse(req.CompetitionId)
+	if err != nil {
+		return nil, err
+	}
+	return s.repo.ChangeState(ctx, id, req.State)
+}