claude refactorings, flutter best practices, platform dependent changes, general cleanup

lib/api/mhsl/custom_timetable_event/add/add_custom_timetable_event.dart

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+import 'dart:convert';
+
+import 'package:http/http.dart';
+import 'package:http/http.dart' as http;
+
+import '../../mhsl_api.dart';
+import 'add_custom_timetable_event_params.dart';
+
+class AddCustomTimetableEvent extends MhslApi<void> {
+  AddCustomTimetableEventParams params;
+  
+  AddCustomTimetableEvent(this.params) : super('server/timetable/customEvents');
+
+  @override
+  void assemble(String raw) {}
+
+  @override
+  Future<Response>? request(Uri uri) {
+    var body = jsonEncode(params.toJson());
+    return http.post(uri, body: body);
+  }
+}

lib/api/mhsl/custom_timetable_event/add/add_custom_timetable_event_params.dart

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+import 'package:json_annotation/json_annotation.dart';
+
+import '../custom_timetable_event.dart';
+
+part 'add_custom_timetable_event_params.g.dart';
+
+@JsonSerializable(explicitToJson: true)
+class AddCustomTimetableEventParams {
+  String user;
+  CustomTimetableEvent event;
+
+  AddCustomTimetableEventParams(this.user, this.event);
+
+  factory AddCustomTimetableEventParams.fromJson(Map<String, dynamic> json) => _$AddCustomTimetableEventParamsFromJson(json);
+  Map<String, dynamic> toJson() => _$AddCustomTimetableEventParamsToJson(this);
+}

lib/api/mhsl/custom_timetable_event/add/add_custom_timetable_event_params.g.dart

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+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'add_custom_timetable_event_params.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+AddCustomTimetableEventParams _$AddCustomTimetableEventParamsFromJson(
+  Map<String, dynamic> json,
+) => AddCustomTimetableEventParams(
+  json['user'] as String,
+  CustomTimetableEvent.fromJson(json['event'] as Map<String, dynamic>),
+);
+
+Map<String, dynamic> _$AddCustomTimetableEventParamsToJson(
+  AddCustomTimetableEventParams instance,
+) => <String, dynamic>{'user': instance.user, 'event': instance.event.toJson()};