112 lines
3.1 KiB
Dart
112 lines
3.1 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'package:didvan/models/enums.dart';
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import 'package:didvan/models/radar_details_data.dart';
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import 'package:didvan/models/requests/radar.dart';
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import 'package:didvan/providers/core_provider.dart';
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import 'package:didvan/services/network/request.dart';
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import 'package:didvan/services/network/request_helper.dart';
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class RadarDetailsState extends CoreProvier {
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final List<RadarDetailsData?> radars = [];
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late Timer _trackingTimer;
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int _trackingTimerCounter = 0;
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late final int initialIndex;
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late final RadarRequestArgs args;
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int _currentIndex = 0;
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int get currentIndex => _currentIndex;
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RadarDetailsData get currentRadar {
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try {
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return radars[_currentIndex]!;
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} catch (e) {
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return radars[_currentIndex + 1]!;
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}
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}
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Future<void> getRadarDetails(int id, {bool? isForward}) async {
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if (isForward == null) {
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appState = AppState.busy;
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}
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final service = RequestService(RequestHelper.radarDetails(id, args));
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await service.httpGet();
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_handleTracking(sendRequest: isForward != null);
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if (service.isSuccess) {
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final result = service.result;
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RadarDetailsData? prevRadar;
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final radar = RadarDetailsData.fromJson(result['radar']);
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if (args.page == 0) {
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radars.add(radar);
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initialIndex = 0;
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appState = AppState.idle;
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return;
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}
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if (result['prevRadar'].isNotEmpty) {
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prevRadar = RadarDetailsData.fromJson(result['prevRadar']);
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}
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RadarDetailsData? nextRadar;
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if (result['nextRadar'].isNotEmpty) {
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nextRadar = RadarDetailsData.fromJson(result['nextRadar']);
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}
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if (isForward == null) {
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radars.addAll(List.generate(max(radar.order - 2, 0), (index) => null));
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if (prevRadar != null) {
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radars.add(prevRadar);
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}
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radars.add(radar);
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if (nextRadar != null) {
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radars.add(nextRadar);
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}
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_currentIndex = initialIndex = radar.order - 1;
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} else if (isForward) {
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if (!exists(nextRadar) && nextRadar != null) {
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radars.add(nextRadar);
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}
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_currentIndex++;
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} else if (!isForward) {
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if (!exists(prevRadar) && prevRadar != null) {
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radars[_currentIndex - 2] = prevRadar;
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}
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_currentIndex--;
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}
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appState = AppState.idle;
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return;
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}
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//why? total page state shouldn't die!
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if (isForward == null) {
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appState = AppState.failed;
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}
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}
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bool exists(RadarDetailsData? radar) =>
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radars.any((r) => radar != null && r != null && r.id == radar.id);
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void onCommentsChanged(int count) {
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radars.firstWhere((radar) => radar!.id == currentRadar.id)!.comments =
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count;
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notifyListeners();
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}
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Future<void> _handleTracking({bool sendRequest = true}) async {
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if (!sendRequest) {
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_trackingTimer = Timer.periodic(const Duration(seconds: 1), (timer) {
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_trackingTimerCounter++;
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});
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return;
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}
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//send request
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_trackingTimerCounter = 0;
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}
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@override
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void dispose() {
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_trackingTimer.cancel();
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super.dispose();
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}
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}
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