feat(transport_helper): add update function for db

lib/transport_helper.dart

@@ -168,6 +168,26 @@ class Route {
     }
   }
 
+  void dbUpdate() async {
+    Database database = DbHelper.db;
+    id = await database.update(
+      "route",
+      toMapRoute(),
+      conflictAlgorithm: ConflictAlgorithm.replace,
+    );
+  }
+
+  void dbUpdateRouteSegments() async {
+    Database database = DbHelper.db;
+    var routeSegments = toMapRouteSegments();
+    for (var i = 0; i < routeSegments.length; i++) {
+      database.update(
+        "routesegments",
+        routeSegments[i],
+      );
+    }
+  }
+
   void dbDelete() async {
     Database database = DbHelper.db;
     int result = await database.delete(
@@ -292,6 +312,11 @@ class Segment {
     id = await database.insert(tableName, toMap());
   }
 
+  void dbUpdate() async {
+    Database database = DbHelper.db;
+    id = await database.update(tableName, toMap());
+  }
+
   void dbDelete() {
     Database database = DbHelper.db;
     database.delete(
@@ -406,6 +431,19 @@ class Station {
     }
   }
 
+  void dbUpdate() async {
+    Database database = DbHelper.db;
+    database.update(tableName, toMap());
+  }
+
+  void dbUpdateStationLines() async {
+    Database database = DbHelper.db;
+    var stationLines = toMapLines();
+    for (var i = 0; i < stationLines.length; i++) {
+      database.update("stationlines", stationLines[i]);
+    }
+  }
+
   void dbDelete() async {
     Database database = DbHelper.db;
     database.delete(tableName, where: "stationid = ?", whereArgs: [id]);
@@ -478,6 +516,11 @@ class Vehicle {
     database.insert(tableName, toMap());
   }
 
+  void dbUpdate() async {
+    Database database = DbHelper.db;
+    database.update(tableName, toMap());
+  }
+
   void dbDelete() async {
     Database database = DbHelper.db;
     database.delete(tableName, where: "id = ?", whereArgs: [id]);
@@ -577,6 +620,11 @@ class Line {
     database.insert(tableName, toMap());
   }
 
+  void dbUpdate() async {
+    Database database = DbHelper.db;
+    database.update(tableName, toMap());
+  }
+
   void dbDelete() async {
     Database database = DbHelper.db;
     database.delete(tableName, where: "lineid = ?", whereArgs: [lineId]);
@@ -683,6 +731,11 @@ class Departure {
     id = await database.insert(tableName, toMap());
   }
 
+  void dbUpdate() async {
+    Database database = DbHelper.db;
+    id = await database.update(tableName, toMap());
+  }
+
   void dbDelete() async {
     Database database = DbHelper.db;
     database.delete(tableName, where: "id = ?", whereArgs: [id]);
@@ -714,4 +767,4 @@ enum VehicleType {
   subway,
   regionalTrain,
   PLACEHOLDER,
-}
+}