add competition service (it`s broken, I will fix it later)

internal/competition/repository/competition.go

@@ -0,0 +1,26 @@
+package repository
+
+import (
+	"context"
+	"datarush/internal/competition/domain"
+
+	"github.com/google/uuid"
+)
+
+
+type ListCompetitionsOptions struct {
+	Page            int
+	PageSize        int
+	State           *domain.CompetitionState
+	IsParticipating *bool
+	SearchQuery     *string
+}
+
+type CompetitionRepository interface {
+	Create(ctx context.Context, competition *domain.Competition) error
+	Get(ctx context.Context, id uuid.UUID) (*domain.Competition, error)
+	Update(ctx context.Context, competition *domain.Competition) error
+	Delete(ctx context.Context, id uuid.UUID) error
+	List(ctx context.Context, opts ListCompetitionsOptions) ([]domain.Competition, int, error)
+	ChangeState(ctx context.Context, id uuid.UUID, state domain.CompetitionState) (*domain.Competition, error)
+}