improve on the subimsion process with automatic submissions

make sure we give each user uniqe id

internal/app/app.go

@@ -7,6 +7,7 @@ import (
 	"github.com/LazyBachelor/LazyPM/internal/models"
 	"github.com/LazyBachelor/LazyPM/internal/storage"
 	"github.com/steveyegge/beads"
+	"go.mongodb.org/mongo-driver/bson/primitive"
 )
 
 type App = models.App
@@ -42,7 +43,7 @@ func New(ctx context.Context, config Config, opts ...Option) (*App, func(), erro
 
 	if b.statsService == nil {
 		statStore := storage.NewJsonStorage(config.StatisticsStoragePath, &models.Statistics{
-			ID:        0,
+			ID:        primitive.NewObjectID(),
 			StartTime: time.Now(),
 		})
 

internal/app/statistics.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/LazyBachelor/LazyPM/internal/models"
 	"github.com/LazyBachelor/LazyPM/internal/storage"
+	"go.mongodb.org/mongo-driver/bson/primitive"
 )
 
 type StatisticsService struct {
@@ -42,6 +43,16 @@ func (s *StatisticsService) GetStatistics() (models.Statistics, error) {
 	return *s.storage.Data, nil
 }
 
+func (s *StatisticsService) GetParticipantID() primitive.ObjectID {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.storage.Data == nil {
+		return primitive.NilObjectID
+	}
+	return s.storage.Data.ID
+}
+
 func (s *StatisticsService) RecordTaskRun(ctx context.Context, run models.TaskRunMetrics) error {
 	_ = ctx