feat(platform-api): resolve vehicle keywords for data queries

vehicle-data-platform/apps/api/internal/platform/handler_test.go

@@ -173,3 +173,28 @@ func TestHandlerHistoryMileageQualityOps(t *testing.T) {
 		})
 	}
 }
+
+func TestHandlerVehicleDataAPIsResolveVehicleKeyword(t *testing.T) {
+	handler := NewHandler(NewService(NewMockStore()))
+	cases := []struct {
+		name string
+		path string
+	}{
+		{name: "history locations", path: "/api/history/locations?vin=粤AG18312&limit=10"},
+		{name: "raw frames", path: "/api/history/raw-frames?vin=粤AG18312&limit=1"},
+		{name: "daily mileage", path: "/api/mileage/daily?vin=粤AG18312&limit=10"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			rec := httptest.NewRecorder()
+			req := httptest.NewRequest(http.MethodGet, tc.path, nil)
+			handler.ServeHTTP(rec, req)
+			if rec.Code != http.StatusOK {
+				t.Fatalf("status = %d body=%s", rec.Code, rec.Body.String())
+			}
+			if !strings.Contains(rec.Body.String(), `"vin":"LB9A32A24R0LS1426"`) {
+				t.Fatalf("vehicle data API should resolve plate keyword to VIN: %s", rec.Body.String())
+			}
+		})
+	}
+}

vehicle-data-platform/apps/api/internal/platform/service.go

@@ -220,26 +220,49 @@ func isLikelyVIN(value string) bool {
 }
 
 func (s *Service) RealtimeLocations(ctx context.Context, query url.Values) (Page[RealtimeLocationRow], error) {
-	return s.store.RealtimeLocations(ctx, query)
+	resolvedQuery, err := s.resolveVehicleQuery(ctx, query)
+	if err != nil {
+		return Page[RealtimeLocationRow]{}, err
+	}
+	return s.store.RealtimeLocations(ctx, resolvedQuery)
 }
 
 func (s *Service) HistoryLocations(ctx context.Context, query url.Values) (Page[HistoryLocationRow], error) {
-	return s.store.HistoryLocationsFromTDengine(ctx, query)
+	resolvedQuery, err := s.resolveVehicleQuery(ctx, query)
+	if err != nil {
+		return Page[HistoryLocationRow]{}, err
+	}
+	return s.store.HistoryLocationsFromTDengine(ctx, resolvedQuery)
 }
 
 func (s *Service) RawFrames(ctx context.Context, query RawFrameQuery) (Page[RawFrameRow], error) {
 	if query.Limit <= 0 || query.Limit > 500 {
 		query.Limit = 100
 	}
+	resolvedVIN, err := s.resolveVehicleVIN(ctx, query.VIN, query.Protocol)
+	if err != nil {
+		return Page[RawFrameRow]{}, err
+	}
+	if resolvedVIN != "" {
+		query.VIN = resolvedVIN
+	}
 	return s.store.RawFrames(ctx, query)
 }
 
 func (s *Service) MileageSummary(ctx context.Context, query url.Values) (MileageSummary, error) {
-	return s.store.MileageSummary(ctx, query)
+	resolvedQuery, err := s.resolveVehicleQuery(ctx, query)
+	if err != nil {
+		return MileageSummary{}, err
+	}
+	return s.store.MileageSummary(ctx, resolvedQuery)
 }
 
 func (s *Service) DailyMileage(ctx context.Context, query url.Values) (Page[DailyMileageRow], error) {
-	return s.store.DailyMileage(ctx, query)
+	resolvedQuery, err := s.resolveVehicleQuery(ctx, query)
+	if err != nil {
+		return Page[DailyMileageRow]{}, err
+	}
+	return s.store.DailyMileage(ctx, resolvedQuery)
 }
 
 func (s *Service) QualitySummary(ctx context.Context, query url.Values) (QualitySummary, error) {
@@ -254,6 +277,50 @@ func (s *Service) OpsHealth(ctx context.Context) (OpsHealth, error) {
 	return s.store.OpsHealth(ctx)
 }
 
+func (s *Service) resolveVehicleQuery(ctx context.Context, query url.Values) (url.Values, error) {
+	resolved := cloneValues(query)
+	vin := strings.TrimSpace(resolved.Get("vin"))
+	if vin == "" {
+		return resolved, nil
+	}
+	resolvedVIN, err := s.resolveVehicleVIN(ctx, vin, resolved.Get("protocol"))
+	if err != nil {
+		return nil, err
+	}
+	if resolvedVIN != "" {
+		resolved.Set("vin", resolvedVIN)
+	}
+	return resolved, nil
+}
+
+func (s *Service) resolveVehicleVIN(ctx context.Context, keyword string, protocol string) (string, error) {
+	keyword = strings.TrimSpace(keyword)
+	if keyword == "" || isLikelyVIN(keyword) {
+		return keyword, nil
+	}
+	vehicleQuery := url.Values{"keyword": {keyword}, "limit": {"10"}}
+	if protocol = strings.TrimSpace(protocol); protocol != "" {
+		vehicleQuery.Set("protocol", protocol)
+	}
+	vehicles, err := s.store.Vehicles(ctx, vehicleQuery)
+	if err != nil {
+		return "", err
+	}
+	identity := resolveVehicleIdentity(keyword, vehicles.Items)
+	if identity == nil || strings.TrimSpace(identity.VIN) == "" {
+		return keyword, nil
+	}
+	return identity.VIN, nil
+}
+
+func cloneValues(values url.Values) url.Values {
+	cloned := make(url.Values, len(values))
+	for key, current := range values {
+		cloned[key] = append([]string(nil), current...)
+	}
+	return cloned
+}
+
 func vehicleSourceStatus(vehicles []VehicleRow, realtime []RealtimeLocationRow, history []HistoryLocationRow, raw []RawFrameRow, mileage []DailyMileageRow) []VehicleSourceStatus {
 	statusByProtocol := map[string]*VehicleSourceStatus{}
 	ensure := func(protocol string) *VehicleSourceStatus {