Assignment #2

import 'package:cluster/auth/supabase_auth/auth_util.dart';
import 'package:intl/intl.dart';

class WeeklyCalendar extends StatefulWidget {
  const WeeklyCalendar({
    super.key,
    this.width,
    this.height,
    required this.attempts,
  });

  final double? width;
  final double? height;
  final List<AttemptStruct> attempts;

  @override
  State<WeeklyCalendar> createState() => _WeeklyCalendarState();
}

class _WeeklyCalendarState extends State<WeeklyCalendar> {
  static const _dayLabels = <String>[
    'MON',
    'TUE',
    'WED',
    'THU',
    'FRI',
    'SAT',
    'SUN'
  ];

  DateTime _dateOnly(DateTime date) =>
      DateTime(date.year, date.month, date.day);

  DateTime? _parseAttemptDate(String raw) {
    if (raw.isEmpty) {
      return null;
    }

    final parsed = DateTime.tryParse(raw);
    if (parsed != null) {
      return _dateOnly(parsed.toLocal());
    }

    const fallbackFormats = <String>['yyyy-MM-dd', 'dd.MM.yyyy', 'MM/dd/yyyy'];
    for (final pattern in fallbackFormats) {
      try {
        final fallback = DateFormat(pattern).parseStrict(raw);
        return _dateOnly(fallback);
      } catch (_) {
        // Keep trying known fallback formats.
      }
    }

    return null;
  }

  bool _solvedForDate(DateTime day, Map<String, AttemptStruct> attemptsByDay) {
    final key = DateFormat('yyyy-MM-dd').format(day);
    return attemptsByDay[key]?.solved == true;
  }

  bool _attemptedForDate(
      DateTime day, Map<String, AttemptStruct> attemptsByDay) {
    final key = DateFormat('yyyy-MM-dd').format(day);
    return attemptsByDay[key]?.attempted == true;
  }

  String _completedAtForDate(
      DateTime day, Map<String, AttemptStruct> attemptsByDay) {
    final key = DateFormat('yyyy-MM-dd').format(day);
    return attemptsByDay[key]?.completedAt ?? '';
  }

  bool _isToday(DateTime day) {
    final today = _dateOnly(getCurrentTimestamp.toLocal());
    return day == today;
  }

  Widget _widgetForStatus(
      DateTime day, bool solved, String completedAt, bool attempted) {
    if (completedAt.isNotEmpty && solved) {
      return Image.asset(
        'assets/images/win.png',
        width: 32,
        height: 32,
      );
    } else if ((!_isToday(day) && attempted) ||
        (_isToday(day) && completedAt.isNotEmpty)) {
      return Image.asset(
        'assets/images/lost.png',
        width: 32,
        height: 32,
      );
    } else if (_isToday(day)) {
      return Container(
        width: 32,
        height: 32,
        decoration: BoxDecoration(
          borderRadius: BorderRadius.circular(8),
          color: FlutterFlowTheme.of(context).alternate.withOpacity(0.7),
        ),
        child: Center(
          child: Text(
            day.day.toString(),
            style: FlutterFlowTheme.of(context)
                .labelMedium
                .copyWith(color: FlutterFlowTheme.of(context).primaryText),
          ),
        ),
      );
    } else {
      return Text(
        day.day.toString(),
        style: FlutterFlowTheme.of(context)
            .labelMedium
            .copyWith(color: FlutterFlowTheme.of(context).secondaryText),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    final today = _dateOnly(getCurrentTimestamp.toLocal());
    final weekDays = List<DateTime>.generate(
      7,
      (index) => today.subtract(Duration(days: 6 - index)),
    );

    final attemptsByDay = <String, AttemptStruct>{};

    for (final attempt in widget.attempts) {
      final parsedDay = _parseAttemptDate(attempt.date);

      if (parsedDay == null) {
        continue;
      }

      final dayKey = DateFormat('yyyy-MM-dd').format(parsedDay);

      attemptsByDay[dayKey] = attempt;
    }

    return SizedBox(
      width: double.infinity,
      child: Row(
        children: weekDays.map((day) {
          return Expanded(
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text(
                    _dayLabels[day.weekday - 1],
                    style: FlutterFlowTheme.of(context).labelMedium.copyWith(
                          color: FlutterFlowTheme.of(context).muted,
                        ),
                  ),
                ),
                SizedBox(
                  width: 48,
                  height: 48,
                  child: Center(
                    child: _widgetForStatus(
                      day,
                      _solvedForDate(day, attemptsByDay),
                      _completedAtForDate(day, attemptsByDay),
                      _attemptedForDate(day, attemptsByDay),
                    ),
                  ),
                ),
              ],
            ),
          );
        }).toList(),
      ),
    );
  }
}