feat(travel): Refactor route handling to use direction instead of destination

main/external/mtr/arrival.h

@@ -1,7 +1,5 @@
 #pragma once
-#include "external/mtr/arrival.h"
 #include "cJSON.h"
-#include "external/mtr/mtr.h"
 #include <string>
 #include <vector>
 

main/external/mtr/line_info.cpp

@@ -51,3 +51,12 @@ LineInfo::LineInfo(cJSON* line_json) {
     ESP_LOGW(LINE_INFO_TAG, "Missing or invalid 'stations' array");
   }
 }
+
+const char* LineInfo::get_station_name(const std::string& station_code) const {
+  for (const auto& station : _stations) {
+    if (std::string(station.code()) == station_code) {
+      return station.name();
+    }
+  }
+  return "";
+}

main/external/mtr/line_info.h

@@ -35,6 +35,8 @@ public:
     return &_stations;
   }
 
+  const char* get_station_name(const std::string& station_code) const;
+
   friend class MTRNextTrainHandler;
 
 private: