updated json names to snake-case

PlatoonProtocol/include/PlatoonMessage.h

@@ -36,6 +36,16 @@ inline bool isStandardMessageType(MessageType messageType)
 
 }
 
+namespace jsonNames
+{
+
+constexpr char VEHICLE_ID[] = "vehicle_id";
+constexpr char PLATOON_ID[] = "platoon_id";
+constexpr char PLATOON_SPEED[] = "ps";
+constexpr char INNER_PLATOON_DISTANCE[] = "ips";
+
+}
+
 struct PlatoonMessage
 {
     static constexpr std::size_t MAX_SIZE = 256;
@@ -116,13 +126,14 @@ struct Encoder<platoonProtocol::PlatoonMessage>
             data[i] = numDataBytes[i];
 
         using json = nlohmann::json;
-        auto j = json{{"vehicleId", message.vehicleId},
-                      {"platoonId", message.platoonId}};
+        using namespace jsonNames;
+        auto j = json{{VEHICLE_ID, message.vehicleId},
+                      {PLATOON_ID, message.platoonId}};
 
         if (messageType == messageTypes::LV_BROADCAST)
         {
-            j["ps"] = message.platoonSpeed;
-            j["ipd"] = message.innerPlatoonDistance;
+            j[PLATOON_SPEED] = message.platoonSpeed;
+            j[INNER_PLATOON_DISTANCE] = message.innerPlatoonDistance;
         }
 
         data.append(j.dump());
@@ -150,13 +161,15 @@ struct Decoder<platoonProtocol::PlatoonMessage>
             throw 0;
 
         message.messageType = messageType;
-        message.vehicleId = j.at("vehicleId").get<VehicleId>();
-        message.platoonId = j.at("platoonId").get<PlatoonId>();
+
+        using namespace jsonNames;
+        message.vehicleId = j.at(VEHICLE_ID).get<VehicleId>();
+        message.platoonId = j.at(PLATOON_ID).get<PlatoonId>();
 
         if (messageType == messageTypes::LV_BROADCAST)
         {
-            message.platoonSpeed = j.at("ps").get<PlatoonSpeed>();
-            message.innerPlatoonDistance = j.at("ipd").get<InnerPlatoonDistance>();
+            message.platoonSpeed = j.at(PLATOON_SPEED).get<PlatoonSpeed>();
+            message.innerPlatoonDistance = j.at(INNER_PLATOON_DISTANCE).get<InnerPlatoonDistance>();
         }
     };
 };