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Fix Notification Flooding & Build Method Side-Effects #446

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Fix Notification Flooding & Build Method Side-Effects #446

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4ecd6e0
Fix Notification Flooding & Build Method Side-Effects
sandy4242 May 28, 2026
e0c8af3
updates
sandy4242 May 28, 2026
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253 changes: 133 additions & 120 deletions lib/opso_timeline.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,127 +3,130 @@ import 'package:timeline_tile/timeline_tile.dart';
import 'package:opso/services/notificationService.dart';
import 'widgets/event_card.dart';

class OpsoTimeLineScreen extends StatelessWidget {
class OpsoTimeLineScreen extends StatefulWidget {
const OpsoTimeLineScreen({super.key});

@override
Widget build(BuildContext context) {
final List<Map<String, dynamic>> events = [
{
'description':
"Season of KDE-Mentorship\nApplication Period - 15/12/2025 to 14/01/2026",
'startDate': DateTime.utc(2025, 12, 15),
'endDate': DateTime.utc(2026, 1, 14),
},
{
'description':
"Outreachy(May Internships)\nApplication Period - 06/02/2026 to 13/02/2026",
'startDate': DateTime.utc(2026, 2, 6),
'endDate': DateTime.utc(2026, 2, 13),
},
{
'description':
"Linux Foundation Mentorship(Spring Term)\nApplication Period - 15/01/2026 to 10/02/2026",
'startDate': DateTime.utc(2026, 1, 15),
'endDate': DateTime.utc(2026, 2, 10),
},
{
'description':
"Summer of Bitcoin\nApplication Period - 01/02/2026 to 15/02/2026",
'startDate': DateTime.utc(2026, 2, 1),
'endDate': DateTime.utc(2026, 2, 15),
},
/*{ PROGRAM CONCLUDED
'description':
"Google Season of Docs\nApplication Period - 22/02/2024 to 02/04/2024",
'startDate': DateTime.utc(2024, 2, 22),
'endDate': DateTime.utc(2024, 4, 2),
},*/
{
'description':
"Google Summer of Code\nApplication Period - 16/03/2026 to 31/03/2026",
'startDate': DateTime.utc(2026, 3, 16),
'endDate': DateTime.utc(2026, 3, 31),
},
{
'description':
"MLH Fellowship(Summer Term-B)\nApplication Period - 15/02/2026 to 30/04/2026",
'startDate': DateTime.utc(2026, 02, 15),
'endDate': DateTime.utc(2026, 4, 30),
},
/*{ NOT DONE IN 2025 NO INFORMATION ABOUT 2026
'description':
"Open Summer of Code\nApplication Period - 1/04/2024 to 29/04/2024",
'startDate': DateTime.utc(2024, 4, 1),
'endDate': DateTime.utc(2024, 4, 29),
},*/
{
'description':
"Hyperledger\nApplication Period - 31/03/2026 to 11/05/2026",
'startDate': DateTime.utc(2026, 3, 31),
'endDate': DateTime.utc(2026, 5, 11),
},
{
'description':
"MLH Fellowship(Fall Term)\nApplication Period - 15/06/2026 to 31/08/2026",
'startDate': DateTime.utc(2026, 6, 15),
'endDate': DateTime.utc(2026, 8, 31),
},
{
'description':
"Linux Foundation Mentorship(Summer Term)\nApplication Period - 14/05/2026 to 27/05/2026",
'startDate': DateTime.utc(2026, 5, 14),
'endDate': DateTime.utc(2026, 5, 27),
},
{
'description':
"GirlScript Summer of Code\nApplication Period - 24/03/2026 to 14/05/2026",
'startDate': DateTime.utc(2026, 3, 24),
'endDate': DateTime.utc(2026, 5, 14),
},
/*{ DOES NOT OPERATE WITH A FIXED APPLICATION WINDOW
'description':
"Redox OS Summer of Code\nApplication Period - 01/05/2024 to 01/06/2024",
'startDate': DateTime.utc(2024, 5, 01),
'endDate': DateTime.utc(2024, 6, 01),
},*/
{
'description':
"Social Winter of Code\nApplication Period - 18/10/2025 to 28/12/2025",
'startDate': DateTime.utc(2025, 10, 18),
'endDate': DateTime.utc(2025, 12, 28),
},
{
'description':
"Linux Foundation Mentorship(Fall Term)\nApplication Period - 30/07/2026 to 12/08/2026",
'startDate': DateTime.utc(2026, 7, 30),
'endDate': DateTime.utc(2026, 8, 12),
},
{
'description':
"Outreachy(December Internships)\nApplication Period - 15/08/2026 to 15/09/2026",
'startDate': DateTime.utc(2026, 8, 15),//Late August
'endDate': DateTime.utc(2026, 9, 15),//Early September
},
{
'description':
"GitHub Campus Expert\nApplication Period - 01/07/2026 to 31/07/2026",
'startDate': DateTime.utc(2026, 7, 1),
'endDate': DateTime.utc(2026, 7, 31),
},
/*{ NOT YET RELEASED DEDICATED APPLICATION PERIOD
'description':
"FOSSASIA Codeheat\nApplication Period - 01/09/2024 to 31/11/2024",
'startDate': DateTime.utc(2024, 9, 1),
'endDate': DateTime.utc(2024, 11, 31),
},*/
{
'description':
"Hacktoberfest\nContribution Period - 01/10/2026 to 31/10/2026",
'startDate': DateTime.utc(2026, 10, 1),
'endDate': DateTime.utc(2026, 10, 31),
},
/*{ NO INFORMATION FOUND FOR 2026
State<OpsoTimeLineScreen> createState() => _OpsoTimeLineScreenState();
}

class _OpsoTimeLineScreenState extends State<OpsoTimeLineScreen> {
final List<Map<String, dynamic>> events = [
{
'description':
"Season of KDE-Mentorship\nApplication Period - 15/12/2025 to 14/01/2026",
'startDate': DateTime.utc(2025, 12, 15),
'endDate': DateTime.utc(2026, 1, 14),
},
{
'description':
"Outreachy(May Internships)\nApplication Period - 06/02/2026 to 13/02/2026",
'startDate': DateTime.utc(2026, 2, 6),
'endDate': DateTime.utc(2026, 2, 13),
},
{
'description':
"Linux Foundation Mentorship(Spring Term)\nApplication Period - 15/01/2026 to 10/02/2026",
'startDate': DateTime.utc(2026, 1, 15),
'endDate': DateTime.utc(2026, 2, 10),
},
{
'description':
"Summer of Bitcoin\nApplication Period - 01/02/2026 to 15/02/2026",
'startDate': DateTime.utc(2026, 2, 1),
'endDate': DateTime.utc(2026, 2, 15),
},
/*{ PROGRAM CONCLUDED
'description':
"Google Season of Docs\nApplication Period - 22/02/2024 to 02/04/2024",
'startDate': DateTime.utc(2024, 2, 22),
'endDate': DateTime.utc(2024, 4, 2),
},*/
{
'description':
"Google Summer of Code\nApplication Period - 16/03/2026 to 31/03/2026",
'startDate': DateTime.utc(2026, 3, 16),
'endDate': DateTime.utc(2026, 3, 31),
},
{
'description':
"MLH Fellowship(Summer Term-B)\nApplication Period - 15/02/2026 to 30/04/2026",
'startDate': DateTime.utc(2026, 02, 15),
'endDate': DateTime.utc(2026, 4, 30),
},
/*{ NOT DONE IN 2025 NO INFORMATION ABOUT 2026
'description':
"Open Summer of Code\nApplication Period - 1/04/2024 to 29/04/2024",
'startDate': DateTime.utc(2024, 4, 1),
'endDate': DateTime.utc(2024, 4, 29),
},*/
{
'description':
"Hyperledger\nApplication Period - 31/03/2026 to 11/05/2026",
'startDate': DateTime.utc(2026, 3, 31),
'endDate': DateTime.utc(2026, 5, 11),
},
{
'description':
"MLH Fellowship(Fall Term)\nApplication Period - 15/06/2026 to 31/08/2026",
'startDate': DateTime.utc(2026, 6, 15),
'endDate': DateTime.utc(2026, 8, 31),
},
{
'description':
"Linux Foundation Mentorship(Summer Term)\nApplication Period - 14/05/2026 to 27/05/2026",
'startDate': DateTime.utc(2026, 5, 14),
'endDate': DateTime.utc(2026, 5, 27),
},
{
'description':
"GirlScript Summer of Code\nApplication Period - 24/03/2026 to 14/05/2026",
'startDate': DateTime.utc(2026, 3, 24),
'endDate': DateTime.utc(2026, 5, 14),
},
/*{ DOES NOT OPERATE WITH A FIXED APPLICATION WINDOW
'description':
"Redox OS Summer of Code\nApplication Period - 01/05/2024 to 01/06/2024",
'startDate': DateTime.utc(2024, 5, 01),
'endDate': DateTime.utc(2024, 6, 01),
},*/
{
'description':
"Social Winter of Code\nApplication Period - 18/10/2025 to 28/12/2025",
'startDate': DateTime.utc(2025, 10, 18),
'endDate': DateTime.utc(2025, 12, 28),
},
{
'description':
"Linux Foundation Mentorship(Fall Term)\nApplication Period - 30/07/2026 to 12/08/2026",
'startDate': DateTime.utc(2026, 7, 30),
'endDate': DateTime.utc(2026, 8, 12),
},
{
'description':
"Outreachy(December Internships)\nApplication Period - 15/08/2026 to 15/09/2026",
'startDate': DateTime.utc(2026, 8, 15),//Late August
'endDate': DateTime.utc(2026, 9, 15),//Early September
},
{
'description':
"GitHub Campus Expert\nApplication Period - 01/07/2026 to 31/07/2026",
'startDate': DateTime.utc(2026, 7, 1),
'endDate': DateTime.utc(2026, 7, 31),
},
/*{ NOT YET RELEASED DEDICATED APPLICATION PERIOD
'description':
"FOSSASIA Codeheat\nApplication Period - 01/09/2024 to 31/11/2024",
'startDate': DateTime.utc(2024, 9, 1),
'endDate': DateTime.utc(2024, 11, 31),
},*/
{
'description':
"Hacktoberfest\nContribution Period - 01/10/2026 to 31/10/2026",
'startDate': DateTime.utc(2026, 10, 1),
'endDate': DateTime.utc(2026, 10, 31),
},
/*{ NO INFORMATION FOUND FOR 2026
'description':
"GirlScript Summer Of Code Extended\nApplication Period - 15/09/2024 to 10/11/2024",
'startDate': DateTime.utc(2024, 9, 15),
Expand All @@ -135,16 +138,26 @@ class OpsoTimeLineScreen extends StatelessWidget {
'startDate': DateTime.utc(2024, 10, 1),
'endDate': DateTime.utc(2024, 11, 10),
},*/
];
];

@override
void initState() {
super.initState();
_scheduleNotifications();
}

Future<void> _scheduleNotifications() async {
for (var event in events) {
NotificationService.scheduleNotificationsForEvent(
await NotificationService.scheduleNotificationsForEvent(
event['description']!,
event['startDate']!,
event['endDate']!,
);
}
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
leading: IconButton(
Expand Down
32 changes: 14 additions & 18 deletions lib/services/notificationService.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -167,33 +167,29 @@ static Future<bool> showNotification({

static Future<bool> _scheduleNotification(
String description, String body, DateTime dateTime) async {
if (await AwesomeNotifications().isNotificationAllowed()) {
bool allowed = await AwesomeNotifications().isNotificationAllowed();
if (allowed) {
int uniqueId = _generateDeterministicId(description, body);
await AwesomeNotifications().createNotification(
content: NotificationContent(
id: DateTime.now().millisecondsSinceEpoch.remainder(100000),
id: uniqueId,
channelKey: 'high_importance_channel',
title: description,
body: body,
notificationLayout: NotificationLayout.Default,
),
schedule: NotificationCalendar.fromDate(date: dateTime),
);
return true;
} else {
bool allowed = await AwesomeNotifications().isNotificationAllowed();
if (allowed) {
await AwesomeNotifications().createNotification(
content: NotificationContent(
id: DateTime.now().millisecondsSinceEpoch.remainder(100000),
channelKey: 'high_importance_channel',
title: description,
body: body,
notificationLayout: NotificationLayout.Default,
),
schedule: NotificationCalendar.fromDate(date: dateTime),
);
}
return allowed;
}
return allowed;
}

static int _generateDeterministicId(String title, String body) {
String key = "$title|$body";
int hash = 0;
for (int i = 0; i < key.length; i++) {
hash = (hash * 31 + key.codeUnitAt(i)) & 0x7FFFFFFF;
}
return hash;
}
}