feat(db): add inserts for all tables

lib/transport_helper.dart

@@ -85,6 +85,7 @@ class Route {
           json["LegList"]["Leg"][-1]["Origin"]["time"] -
           json["LegList"]["Leg"][0]["Origin"]["time"],
     );
+    newRoute.dbInsertRoute();
     return newRoute;
   }
 
@@ -110,20 +111,23 @@ class Route {
     """);
   }
 
-  void writeRouteToTable() async {
+  void dbInsertRoute() async {
     Database database = DbHelper.db;
-    database.insert(
+    id = await database.insert(
       "route",
       toMapRoute(),
       conflictAlgorithm: ConflictAlgorithm.replace,
     );
   }
 
-  void writeRouteSegmentsToTable() async {
+  void dbInsertRouteSegments() async {
     Database database = DbHelper.db;
     var routeSegments = toMapRouteSegments();
     for (var i = 0; i < routeSegments.length; i++) {
-      database.insert("routesegments", routeSegments[i]);
+      database.insert(
+        "routesegments",
+        routeSegments[i],
+      );
     }
   }
 }
@@ -139,6 +143,7 @@ class Segment {
   Vehicle vehicle;
 
   Segment({
+    this.id, // might throw errors - needs testing, I guess
     required this.startPoint,
     required this.endPoint,
     required this.startTime,
@@ -165,7 +170,7 @@ class Segment {
       endTime: json["Destination"]["rtTime"],
       vehicle: Vehicle.fromJson(json["Product"]),
     );
-    tmp.writeNewToTable(); // TODO: we need to write to db and get the ID!!!!!!!
+    tmp.dbInsert();
     return tmp;
   }
 
@@ -187,10 +192,9 @@ class Segment {
     """);
   }
 
-  Future<int> writeNewToTable() async {
+  void dbInsert() async {
     Database database = DbHelper.db;
-    int id = await database.insert(tableName, toMap());
-    return id;
+    id = await database.insert(tableName, toMap());
   }
 }
 
@@ -249,6 +253,19 @@ class Station {
     );
     """);
   }
+
+  void dbInsertStation() async {
+    Database database = DbHelper.db;
+    database.insert(tableName, toMap());
+  }
+
+  void dbInsertStationLines() async {
+    Database database = DbHelper.db;
+    var stationLines = toMapLines();
+    for (var i = 0; i < stationLines.length; i++) {
+      database.insert("stationlines", stationLines[i]);
+    }
+  }
 }
 
 class Vehicle {
@@ -265,7 +282,7 @@ class Vehicle {
   Map<String, Object?> toMap() {
     return {
       "id": id,
-      "line": line.id,
+      "line": line.LineId,
     };
   }
 
@@ -286,12 +303,17 @@ class Vehicle {
     );
     """);
   }
+
+  void dbInsert() async {
+    Database database = DbHelper.db;
+    database.insert(tableName, toMap());
+  }
 }
 
 class Line {
   static const String tableName = "line";
 
-  String id;
+  String LineId;
   Station? destination;
   Station? direction;
   VehicleType mode;
@@ -300,7 +322,7 @@ class Line {
   Color? bgColor;
 
   Line({
-    required this.id,
+    required this.LineId,
     required this.name,
     required this.mode,
     this.fgColor,
@@ -309,7 +331,7 @@ class Line {
 
   Map<String, Object?> toMap() {
     return {
-      "lineid": id,
+      "lineid": LineId,
       "destination": destination,
       "direction": direction,
       "mode": mode,
@@ -328,7 +350,7 @@ class Line {
   ];
 
   factory Line.fromJson(Map<String, dynamic> json) => Line(
-    id: json["lineId"],
+    LineId: json["lineId"],
     name: json["name"],
     mode: _vehicleTypeAsCatCode[int.parse(json["catCode"])],
     fgColor:
@@ -351,17 +373,24 @@ class Line {
     );
     """);
   }
+
+  void dbInsert() async {
+    Database database = DbHelper.db;
+    database.insert(tableName, toMap());
+  }
 }
 
+// TODO: add fromJson
 class Departure {
   static const String tableName = "departure";
 
-  String? id;
+  int? id;
   Vehicle vehicle;
   Station station;
   DateTime departureTime;
 
   Departure({
+    this.id,
     required this.vehicle,
     required this.station,
     required this.departureTime,
@@ -390,6 +419,11 @@ class Departure {
      );
      """);
   }
+
+  void dbInsert() async {
+    Database database = DbHelper.db;
+    id = await database.insert(tableName, toMap());
+  }
 }
 
 class Color {