feat: added API gateway

internal/gw/grpc_client/competition_client.go

@@ -0,0 +1,98 @@
+package grpc_client
+
+import (
+	"context"
+	"fmt"
+
+	pb "datarush/pkg/api/competition"
+
+	"google.golang.org/grpc"
+)
+
+type CompetitionClient struct {
+	client pb.CompetitionServiceClient
+	conn   *grpc.ClientConn
+}
+
+func NewCompetitionClient(ctx context.Context, address string, factory *ClientFactory) (*CompetitionClient, error) {
+	conn, err := factory.GetConnection(ctx, address)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create competition client: %w", err)
+	}
+
+	return &CompetitionClient{
+		client: pb.NewCompetitionServiceClient(conn),
+		conn:   conn,
+	}, nil
+}
+
+func (c *CompetitionClient) CreateCompetition(
+	ctx context.Context,
+	competition *pb.Competition,
+) (*pb.Competition, error) {
+	resp, err := c.client.CreateCompetition(ctx, competition)
+	if err != nil {
+		return nil, fmt.Errorf("create competition failed: %w", err)
+	}
+	return resp, nil
+}
+
+func (c *CompetitionClient) GetCompetition(ctx context.Context, competitionID string) (*pb.Competition, error) {
+	req := &pb.GetCompetitionRequest{
+		CompetitionId: competitionID,
+	}
+
+	resp, err := c.client.GetCompetition(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("get competition failed: %w", err)
+	}
+	return resp, nil
+}
+
+func (c *CompetitionClient) EditCompetition(ctx context.Context, competition *pb.Competition) (*pb.Competition, error) {
+	resp, err := c.client.EditCompetition(ctx, competition)
+	if err != nil {
+		return nil, fmt.Errorf("edit competition failed: %w", err)
+	}
+	return resp, nil
+}
+
+func (c *CompetitionClient) DeleteCompetition(ctx context.Context, competitionID string) error {
+	req := &pb.DeleteCompetitionRequest{
+		CompetitionId: competitionID,
+	}
+
+	_, err := c.client.DeleteCompetition(ctx, req)
+	if err != nil {
+		return fmt.Errorf("delete competition failed: %w", err)
+	}
+	return nil
+}
+
+func (c *CompetitionClient) ListCompetitions(
+	ctx context.Context,
+	req *pb.ListCompetitionsRequest,
+) (*pb.ListCompetitionsResponse, error) {
+	resp, err := c.client.ListCompetitions(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("list competitions failed: %w", err)
+	}
+	return resp, nil
+}
+
+func (c *CompetitionClient) ChangeCompetitionState(
+	ctx context.Context,
+	competitionID string,
+	state pb.CompetitionState,
+) (*pb.Competition, error) {
+	req := &pb.ChangeCompetitionStateRequest{
+		CompetitionId: competitionID,
+		State:         state,
+	}
+
+	resp, err := c.client.ChangeCompetitionState(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("change competition state failed: %w", err)
+	}
+	return resp, nil
+}