fix(go): flatten jt808 additional fields

go/vehicle-gateway/internal/realtime/repository_test.go

@@ -196,6 +196,72 @@ func TestRepositoryMergesNestedGB32960MotorSlicesBySerialNo(t *testing.T) {
 	}
 }
 
+func TestRepositoryReplacesJT808LocationWhenUpdatingRealtimeRaw(t *testing.T) {
+	repo, closeFn := newTestRepository(t)
+	defer closeFn()
+	ctx := context.Background()
+
+	if err := repo.Update(ctx, envelope.FrameEnvelope{
+		Protocol:     envelope.ProtocolJT808,
+		VIN:          "VIN001",
+		EventTimeMS:  1000,
+		ReceivedAtMS: 1100,
+		MessageID:    "0x0200",
+		Parsed: map[string]any{
+			"header": map[string]any{
+				"message_id":    "0x0200",
+				"phone_raw":     "013307795425",
+				"phone_bcd_hex": "013307795425",
+			},
+			"location": map[string]any{
+				"additional": []any{
+					map[string]any{"id": "0x01", "parsed": map[string]any{"raw_value_tenth_km": 102412}},
+				},
+				"total_mileage_km": 10241.2,
+			},
+		},
+		Fields: map[string]any{envelope.FieldTotalMileageKM: 10241.2},
+	}); err != nil {
+		t.Fatalf("Update() initial error = %v", err)
+	}
+	if err := repo.Update(ctx, envelope.FrameEnvelope{
+		Protocol:     envelope.ProtocolJT808,
+		VIN:          "VIN001",
+		EventTimeMS:  2000,
+		ReceivedAtMS: 2100,
+		MessageID:    "0x0200",
+		Parsed: map[string]any{
+			"header": map[string]any{
+				"message_id": "0x0200",
+				"phone":      "13307795425",
+			},
+			"location": map[string]any{
+				"total_mileage_km":        10241.3,
+				"network_signal_strength": byte(31),
+			},
+		},
+		Fields: map[string]any{envelope.FieldTotalMileageKM: 10241.3},
+	}); err != nil {
+		t.Fatalf("Update() replacement error = %v", err)
+	}
+
+	realtimeRaw, err := repo.GetRealtimeRaw(ctx, "VIN001", envelope.ProtocolJT808)
+	if err != nil {
+		t.Fatalf("GetRealtimeRaw() error = %v", err)
+	}
+	header := realtimeRaw["header"].(map[string]any)
+	if _, ok := header["phone_raw"]; ok {
+		t.Fatalf("header should be replaced, got %#v", header)
+	}
+	location := realtimeRaw["location"].(map[string]any)
+	if _, ok := location["additional"]; ok {
+		t.Fatalf("jt808 location should be replaced, got %#v", location)
+	}
+	if location["total_mileage_km"] != float64(10241.3) {
+		t.Fatalf("mileage = %#v", location["total_mileage_km"])
+	}
+}
+
 func TestRepositoryOnlineStatus(t *testing.T) {
 	repo, closeFn := newTestRepository(t)
 	defer closeFn()