69 lines
2.6 KiB
Dart
69 lines
2.6 KiB
Dart
import 'dart:io';
|
|
import 'package:intl/intl.dart';
|
|
import 'package:path_provider/path_provider.dart';
|
|
import 'package:open_filex/open_filex.dart';
|
|
import '../models/cycle_entry.dart';
|
|
import '../models/user_profile.dart';
|
|
import 'cycle_service.dart';
|
|
import 'package:uuid/uuid.dart';
|
|
|
|
class IcsService {
|
|
static Future<void> generateCycleCalendar(List<CycleEntry> entries, {UserProfile? user, bool includePredictions = true}) async {
|
|
final buffer = StringBuffer();
|
|
buffer.writeln('BEGIN:VCALENDAR');
|
|
buffer.writeln('VERSION:2.0');
|
|
buffer.writeln('PRODID:-//Christian Period Tracker//Cycle Calendar//EN');
|
|
|
|
// Sort entries
|
|
entries.sort((a, b) => a.date.compareTo(b.date));
|
|
|
|
// 1. Logged Entries
|
|
for (var entry in entries) {
|
|
if (entry.isPeriodDay) {
|
|
final dateStr = DateFormat('yyyyMMdd').format(entry.date);
|
|
buffer.writeln('BEGIN:VEVENT');
|
|
buffer.writeln('UID:${entry.id}');
|
|
buffer.writeln('DTSTAMP:${DateFormat('yyyyMMddTHHmmss').format(DateTime.now())}Z');
|
|
buffer.writeln('DTSTART;VALUE=DATE:$dateStr'); // All day event
|
|
buffer.writeln('DTEND;VALUE=DATE:${DateFormat('yyyyMMdd').format(entry.date.add(const Duration(days: 1)))}');
|
|
buffer.writeln('SUMMARY:Period');
|
|
buffer.writeln('DESCRIPTION:Logged period day.');
|
|
buffer.writeln('END:VEVENT');
|
|
}
|
|
}
|
|
|
|
// 2. Predicted Entries
|
|
if (includePredictions && user != null) {
|
|
final predictedDays = CycleService.predictNextPeriodDays(user);
|
|
|
|
for (var date in predictedDays) {
|
|
final dateStr = DateFormat('yyyyMMdd').format(date);
|
|
final uuid = const Uuid().v4();
|
|
|
|
buffer.writeln('BEGIN:VEVENT');
|
|
buffer.writeln('UID:$uuid');
|
|
buffer.writeln('DTSTAMP:${DateFormat('yyyyMMddTHHmmss').format(DateTime.now())}Z');
|
|
buffer.writeln('DTSTART;VALUE=DATE:$dateStr');
|
|
buffer.writeln('DTEND;VALUE=DATE:${DateFormat('yyyyMMdd').format(date.add(const Duration(days: 1)))}');
|
|
buffer.writeln('SUMMARY:Predicted Period');
|
|
buffer.writeln('DESCRIPTION:Predicted period day based on cycle history.');
|
|
buffer.writeln('STATUS:TENTATIVE'); // Mark as tentative
|
|
buffer.writeln('END:VEVENT');
|
|
}
|
|
}
|
|
|
|
buffer.writeln('END:VCALENDAR');
|
|
|
|
// Save to file
|
|
final directory = await getApplicationDocumentsDirectory();
|
|
final file = File('${directory.path}/cycle_calendar.ics');
|
|
await file.writeAsString(buffer.toString());
|
|
|
|
// Open/Share file
|
|
final result = await OpenFilex.open(file.path);
|
|
if (result.type != ResultType.done) {
|
|
throw 'Could not open file: ${result.message}';
|
|
}
|
|
}
|
|
}
|