add get ticket

internal/app/tickets.go

@@ -5,11 +5,41 @@ import (
 
 	"evening_detective_server/internal/modules/processor_jwt"
 	"evening_detective_server/internal/modules/roles"
+	"evening_detective_server/internal/services/ticket_service"
 	"evening_detective_server/proto"
+	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/timestamppb"
 )
 
+func (s *server) GetTicket(ctx context.Context, req *proto.GetTicketReq) (*proto.GetTicketRsp, error) {
+	_ = grpc.SetHeader(ctx, metadata.Pairs("Cache-Control", "no-store"))
+	if req == nil {
+		return &proto.GetTicketRsp{Error: ticket_service.ErrTicketNotFound.Error()}, nil
+	}
+	page, err := s.ticketService.Get(ctx, req.Token)
+	if err != nil {
+		return &proto.GetTicketRsp{Error: ticket_service.ErrTicketNotFound.Error()}, nil
+	}
+
+	result := &proto.TicketPage{
+		Id:         int32(page.ID),
+		GameName:   page.GameName,
+		StartAt:    timestamppb.New(page.StartAt),
+		Status:     page.Status,
+		GameStatus: page.GameStatus,
+	}
+	if page.Location != nil {
+		result.Location = *page.Location
+	}
+	if page.UsedAt != nil {
+		result.UsedAt = timestamppb.New(*page.UsedAt)
+	}
+	return &proto.GetTicketRsp{Ticket: result}, nil
+}
+
 func (s *server) IssueGameTickets(ctx context.Context, req *proto.IssueGameTicketsReq) (*proto.IssueGameTicketsRsp, error) {
 	claims, ok := ctx.Value("claims").(*processor_jwt.JWTClaims)
 	if !ok || claims == nil {