What's new

- Reordered Settings Page.
- Added "Click to Unblur" for posts.
- Added Persistent Notification
- Improved Grayscale Scheduling.
and more.
This commit is contained in:
Ujwal
2026-03-04 10:48:14 +05:45
commit 7bb472d212
92 changed files with 14740 additions and 0 deletions
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import 'dart:async';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'notification_service.dart';
class FocusSchedule {
final int startHour;
final int startMinute;
final int endHour;
final int endMinute;
FocusSchedule({
required this.startHour,
required this.startMinute,
required this.endHour,
required this.endMinute,
});
Map<String, dynamic> toJson() => {
'startH': startHour,
'startM': startMinute,
'endH': endHour,
'endM': endMinute,
};
factory FocusSchedule.fromJson(Map<String, dynamic> json) => FocusSchedule(
startHour: json['startH'] as int,
startMinute: json['startM'] as int,
endHour: json['endH'] as int,
endMinute: json['endM'] as int,
);
}
/// Manages all session logic for FocusGram:
///
/// **App Session** — how long the user plans to use Instagram today.
/// Started by the AppSessionPicker on every cold open.
/// Enforced with a watchdog timer; one 10-min extension allowed.
/// Cooldown enforced between app-opens.
///
/// **Reel Session** — a period during which reels are unblocked.
/// Started manually by the user via the FAB.
/// Deducted from the daily reel quota.
class SessionManager extends ChangeNotifier {
// ── Reel-session keys ──────────────────────────────────────
static const _keyDailyDate = 'sessn_daily_date';
static const _keyDailyUsedSeconds = 'sessn_daily_used_sec';
static const _keySessionExpiry = 'sessn_expiry_ts';
static const _keyLastSessionEnd = 'sessn_last_end_ts';
static const _keyDailyLimitSec = 'sessn_daily_limit_sec';
static const _keyPerSessionSec = 'sessn_per_session_sec';
static const _keyCooldownSec = 'sessn_cooldown_sec';
// ── App-session keys ───────────────────────────────────────
static const _keyAppSessionEnd = 'app_sess_end_ts';
static const _keyAppSessionExtUsed = 'app_sess_ext_used';
static const _keyLastAppSessEnd = 'app_sess_last_end_ts';
static const _keyDailyOpenCount = 'app_open_count';
static const _keyScheduleEnabled = 'sched_enabled';
static const _keyScheduleStartHour = 'sched_start_h';
static const _keyScheduleStartMin = 'sched_start_m';
static const _keyScheduleEndHour = 'sched_end_h';
static const _keyScheduleEndMin = 'sched_end_m';
static const _keySchedulesJson = 'sched_list_json';
SharedPreferences? _prefs;
// ── Reel-session runtime ───────────────────────────────────
bool _isSessionActive = false;
DateTime? _sessionExpiry;
int _dailyUsedSeconds = 0;
DateTime? _lastSessionEnd;
Timer? _ticker;
// ── App-session runtime ────────────────────────────────────
DateTime? _appSessionEnd;
bool _appExtensionUsed = false;
DateTime? _lastAppSessionEnd;
bool _appSessionExpiredFlag =
false; // set when time runs out, waiting for user action
int _dailyOpenCount = 0;
// ── Scheduled Blocking runtime ─────────────────────────────
bool _scheduleEnabled = false;
int _schedStartHour = 22; // Default 10 PM
int _schedStartMin = 0;
int _schedEndHour = 7;
int _schedEndMin = 0;
List<FocusSchedule> _schedules = [];
bool _lastScheduleState = false;
bool _scheduleNotificationShown = false; // Track if schedule notification was shown
bool _sessionEndNotificationShown = true; // Default to true to prevent notification on app startup (will be reset when new session starts)
bool _isInForeground = true; // Tracking app lifecycle state
int _cachedRemainingSessionSeconds = 0;
int _cachedRemainingAppSessionSeconds = 0;
// ── Settings defaults ──────────────────────────────────────
int _dailyLimitSeconds = 30 * 60; // 30 min
int _perSessionSeconds = 5 * 60; // 5 min
int _cooldownSeconds = 15 * 60; // 15 min cooldown between reel sessions
// ── Public getters — Reel session ─────────────────────────
bool get isSessionActive => _isSessionActive;
int get remainingSessionSeconds {
if (!_isSessionActive || _sessionExpiry == null) return 0;
// If not in foreground, the clock "freezes" visually too (or we could shift the expiry)
final diff = _sessionExpiry!.difference(DateTime.now()).inSeconds;
return diff > 0 ? diff : 0;
}
int get dailyUsedSeconds => _dailyUsedSeconds;
int get dailyLimitSeconds => _dailyLimitSeconds;
int get dailyRemainingSeconds {
final rem = _dailyLimitSeconds - _dailyUsedSeconds;
return rem > 0 ? rem : 0;
}
bool get isDailyLimitExhausted => dailyRemainingSeconds <= 0;
bool get isCooldownActive {
if (_lastSessionEnd == null) return false;
final elapsed = DateTime.now().difference(_lastSessionEnd!).inSeconds;
return elapsed < _cooldownSeconds;
}
int get cooldownRemainingSeconds {
if (!isCooldownActive || _lastSessionEnd == null) return 0;
final elapsed = DateTime.now().difference(_lastSessionEnd!).inSeconds;
final rem = _cooldownSeconds - elapsed;
return rem > 0 ? rem : 0;
}
int get perSessionSeconds => _perSessionSeconds;
int get cooldownSeconds => _cooldownSeconds;
DateTime? get lastSessionEnd => _lastSessionEnd;
// ── Public getters — App session ──────────────────────────
/// Whether the user has an active app session right now.
bool get isAppSessionActive {
if (_appSessionEnd == null) return false;
return DateTime.now().isBefore(_appSessionEnd!);
}
/// Seconds left in the current app session.
int get appSessionRemainingSeconds {
if (_appSessionEnd == null) return 0;
final diff = _appSessionEnd!.difference(DateTime.now()).inSeconds;
return diff > 0 ? diff : 0;
}
/// True when the app session has expired and user has not yet acted.
bool get isAppSessionExpired => _appSessionExpiredFlag;
/// Whether the 10-min extension has been used.
bool get canExtendAppSession => !_appExtensionUsed;
/// Seconds remaining in the app-open cooldown.
int get appOpenCooldownRemainingSeconds {
if (_lastAppSessionEnd == null) return 0;
final elapsed = DateTime.now().difference(_lastAppSessionEnd!).inSeconds;
final rem = _cooldownSeconds - elapsed;
return rem > 0 ? rem : 0;
}
/// True if the app-open cooldown is still active.
bool get isAppOpenCooldownActive {
if (_lastAppSessionEnd == null) return false;
return appOpenCooldownRemainingSeconds > 0;
}
/// How many times the user has opened the app today.
int get dailyOpenCount => _dailyOpenCount;
// ── Scheduled Blocking Getters ─────────────────────────────
bool get scheduleEnabled => _scheduleEnabled;
int get schedStartHour => _schedStartHour;
int get schedStartMin => _schedStartMin;
int get schedEndHour => _schedEndHour;
int get schedEndMin => _schedEndMin;
List<FocusSchedule> get schedules => _schedules;
bool get isScheduledBlockActive {
if (!_scheduleEnabled) return false;
final now = DateTime.now();
final currentTime = now.hour * 60 + now.minute;
for (final s in _schedules) {
final startTime = s.startHour * 60 + s.startMinute;
final endTime = s.endHour * 60 + s.endMinute;
if (startTime < endTime) {
// Simple range (e.g., 9:00 to 17:00)
if (currentTime >= startTime && currentTime < endTime) return true;
} else {
// Over-midnight range (e.g., 22:00 to 07:00)
if (currentTime >= startTime || currentTime < endTime) return true;
}
}
return false;
}
String? get activeScheduleText {
if (!isScheduledBlockActive) return null;
final now = DateTime.now();
final currentTime = now.hour * 60 + now.minute;
for (final s in _schedules) {
final startTime = s.startHour * 60 + s.startMinute;
final endTime = s.endHour * 60 + s.endMinute;
bool active = false;
if (startTime < endTime) {
if (currentTime >= startTime && currentTime < endTime) active = true;
} else {
if (currentTime >= startTime || currentTime < endTime) active = true;
}
if (active) {
return '${formatTime12h(s.startHour, s.startMinute)} to ${formatTime12h(s.endHour, s.endMinute)}';
}
}
return null;
}
String formatTime12h(int h, int m) {
var hour = h % 12;
if (hour == 0) hour = 12;
final period = h >= 12 ? 'PM' : 'AM';
final min = m.toString().padLeft(2, '0');
return '$hour:$min $period';
}
// ── Initialization ─────────────────────────────────────────
Future<void> init() async {
_prefs = await SharedPreferences.getInstance();
await _resetDailyIfNeeded();
_loadPersisted();
_lastScheduleState = isScheduledBlockActive;
_startTicker();
_incrementOpenCount();
}
void setAppForeground(bool v) {
if (_isInForeground == v) return;
_isInForeground = v;
if (v) {
// Returning to foreground: resume sessions by shifting expiry
final now = DateTime.now();
if (_isSessionActive) {
_sessionExpiry = now.add(
Duration(seconds: _cachedRemainingSessionSeconds),
);
}
if (_appSessionEnd != null) {
_appSessionEnd = now.add(
Duration(seconds: _cachedRemainingAppSessionSeconds),
);
}
} else {
// Entering background: cache remaining time
_cachedRemainingSessionSeconds = remainingSessionSeconds;
_cachedRemainingAppSessionSeconds = appSessionRemainingSeconds;
}
notifyListeners();
}
Future<void> _resetDailyIfNeeded() async {
final today = DateFormat('yyyy-MM-dd').format(DateTime.now());
final stored = _prefs!.getString(_keyDailyDate) ?? '';
if (stored != today) {
await _prefs!.setString(_keyDailyDate, today);
await _prefs!.setInt(_keyDailyUsedSeconds, 0);
await _prefs!.setInt(_keyDailyOpenCount, 0);
}
}
void _loadPersisted() {
_dailyUsedSeconds = _prefs!.getInt(_keyDailyUsedSeconds) ?? 0;
_dailyLimitSeconds = _prefs!.getInt(_keyDailyLimitSec) ?? 30 * 60;
_perSessionSeconds = _prefs!.getInt(_keyPerSessionSec) ?? 5 * 60;
_cooldownSeconds = _prefs!.getInt(_keyCooldownSec) ?? 15 * 60;
_dailyOpenCount = _prefs!.getInt(_keyDailyOpenCount) ?? 0;
// Reel session
final expiryMs = _prefs!.getInt(_keySessionExpiry) ?? 0;
if (expiryMs > 0) {
final expiry = DateTime.fromMillisecondsSinceEpoch(expiryMs);
if (expiry.isAfter(DateTime.now())) {
_sessionExpiry = expiry;
_isSessionActive = true;
} else {
// Don't show notification for expired sessions from previous app session
_cleanupExpiredReelSession(showNotification: false);
}
}
final lastEndMs = _prefs!.getInt(_keyLastSessionEnd) ?? 0;
if (lastEndMs > 0) {
_lastSessionEnd = DateTime.fromMillisecondsSinceEpoch(lastEndMs);
}
// App session
final appEndMs = _prefs!.getInt(_keyAppSessionEnd) ?? 0;
if (appEndMs > 0) {
_appSessionEnd = DateTime.fromMillisecondsSinceEpoch(appEndMs);
}
_appExtensionUsed = _prefs!.getBool(_keyAppSessionExtUsed) ?? false;
final lastAppEndMs = _prefs!.getInt(_keyLastAppSessEnd) ?? 0;
if (lastAppEndMs > 0) {
_lastAppSessionEnd = DateTime.fromMillisecondsSinceEpoch(lastAppEndMs);
}
_scheduleEnabled = _prefs!.getBool(_keyScheduleEnabled) ?? false;
_schedStartHour = _prefs!.getInt(_keyScheduleStartHour) ?? 22;
_schedStartMin = _prefs!.getInt(_keyScheduleStartMin) ?? 0;
_schedEndHour = _prefs!.getInt(_keyScheduleEndHour) ?? 7;
_schedEndMin = _prefs!.getInt(_keyScheduleEndMin) ?? 0;
final schedJson = _prefs!.getString(_keySchedulesJson);
if (schedJson != null) {
final List decode = jsonDecode(schedJson);
_schedules = decode.map((m) => FocusSchedule.fromJson(m)).toList();
} else {
// Migrate old single schedule if it exists
_schedules = [
FocusSchedule(
startHour: _schedStartHour,
startMinute: _schedStartMin,
endHour: _schedEndHour,
endMinute: _schedEndMin,
),
];
_saveSchedulesToPrefs();
}
}
void _incrementOpenCount() {
_dailyOpenCount++;
_prefs?.setInt(_keyDailyOpenCount, _dailyOpenCount);
}
void _startTicker() {
_ticker?.cancel();
_ticker = Timer.periodic(const Duration(seconds: 1), (_) => _tick());
}
void _tick() {
if (!_isInForeground) return; // Freeze everything when in background
bool changed = false;
// Reel session countdown
if (_isSessionActive) {
// Recalculate expiry every tick to "pause" it while backgrounded:
// We don't change _sessionExpiry, but we increment _dailyUsedSeconds.
// If we want it to actually pause, we should probably store "remaining seconds"
// and update expiry ONLY when in foreground.
if (remainingSessionSeconds <= 0) {
// Only cleanup if session was actually active and has expired naturally
_cleanupExpiredReelSession(showNotification: true);
changed = true;
} else {
_dailyUsedSeconds++;
_prefs?.setInt(_keyDailyUsedSeconds, _dailyUsedSeconds);
if (isDailyLimitExhausted) {
_cleanupExpiredReelSession(showNotification: true);
}
changed = true;
}
}
// App session expiry check
if (_appSessionEnd != null && !_appSessionExpiredFlag) {
if (DateTime.now().isAfter(_appSessionEnd!)) {
_appSessionExpiredFlag = true;
changed = true;
}
}
if (isCooldownActive) {
changed = true;
} else if (appOpenCooldownRemainingSeconds <= 0 &&
_lastAppSessionEnd != null) {
// Just expired
changed = true;
}
// Schedule check
final sched = isScheduledBlockActive;
if (sched != _lastScheduleState) {
_lastScheduleState = sched;
changed = true;
// Show notification when schedule becomes active
if (sched && !_scheduleNotificationShown) {
_scheduleNotificationShown = true;
NotificationService().showNotification(
id: 1001,
title: 'FocusGram Schedule Active',
body: 'Instagram is blocked according to your schedule.',
);
} else if (!sched) {
_scheduleNotificationShown = false;
}
}
if (changed) notifyListeners();
}
void _cleanupExpiredReelSession({bool showNotification = true}) {
// Only show notification if we haven't already shown one for this session
// and the user has enabled session end notifications
// The showNotification parameter should be false when cleaning up on app startup
// (i.e., when loading an expired session from a previous app session)
if (showNotification && !_sessionEndNotificationShown) {
_sessionEndNotificationShown = true;
// Check if user wants session end notifications
final notifySessionEnd = _prefs?.getBool('set_notify_session_end') ?? false;
if (notifySessionEnd) {
NotificationService().showNotification(
id: 999,
title: 'Session Ended',
body: 'Your Reel session has expired. Time to focus!',
);
}
}
_isSessionActive = false;
_sessionExpiry = null;
_lastSessionEnd = DateTime.now();
_prefs?.setInt(_keySessionExpiry, 0);
_prefs?.setInt(_keyLastSessionEnd, _lastSessionEnd!.millisecondsSinceEpoch);
}
// ── Reel session API ───────────────────────────────────────
bool startSession(int minutes) {
if (isDailyLimitExhausted) return false;
if (isCooldownActive) return false;
final allowed = (minutes * 60).clamp(0, dailyRemainingSeconds);
_sessionExpiry = DateTime.now().add(Duration(seconds: allowed));
_isSessionActive = true;
_sessionEndNotificationShown = false; // Reset notification flag for new session
_prefs?.setInt(_keySessionExpiry, _sessionExpiry!.millisecondsSinceEpoch);
notifyListeners();
return true;
}
void endSession() {
if (!_isSessionActive) return;
// Don't show notification when user manually ends the session
_cleanupExpiredReelSession(showNotification: false);
notifyListeners();
}
void accrueSeconds(int seconds) {
_dailyUsedSeconds = (_dailyUsedSeconds + seconds).clamp(
0,
_dailyLimitSeconds,
);
_prefs?.setInt(_keyDailyUsedSeconds, _dailyUsedSeconds);
if (isDailyLimitExhausted && _isSessionActive) {
// Daily limit exhausted - show notification
_cleanupExpiredReelSession(showNotification: true);
}
notifyListeners();
}
// ── App session API ────────────────────────────────────────
/// Start an app session of [minutes] (160).
void startAppSession(int minutes) {
final end = DateTime.now().add(Duration(minutes: minutes));
_appSessionEnd = end;
_appSessionExpiredFlag = false;
_appExtensionUsed = false;
_prefs?.setInt(_keyAppSessionEnd, end.millisecondsSinceEpoch);
_prefs?.setBool(_keyAppSessionExtUsed, false);
notifyListeners();
}
/// Extend the app session by 10 minutes. Only works once.
bool extendAppSession() {
if (_appExtensionUsed) return false;
final base = _appSessionEnd ?? DateTime.now();
_appSessionEnd = base.add(const Duration(minutes: 10));
_appExtensionUsed = true;
_appSessionExpiredFlag = false;
_prefs?.setInt(_keyAppSessionEnd, _appSessionEnd!.millisecondsSinceEpoch);
_prefs?.setBool(_keyAppSessionExtUsed, true);
notifyListeners();
return true;
}
/// Called when the user closes the app voluntarily or after extension denial.
void endAppSession() {
_lastAppSessionEnd = DateTime.now();
_appSessionEnd = null;
_appSessionExpiredFlag = false;
_prefs?.setInt(
_keyLastAppSessEnd,
_lastAppSessionEnd!.millisecondsSinceEpoch,
);
_prefs?.setInt(_keyAppSessionEnd, 0);
notifyListeners();
}
// ── Settings mutations ─────────────────────────────────────
Future<void> setDailyLimitMinutes(int minutes) async {
_dailyLimitSeconds = minutes * 60;
await _prefs?.setInt(_keyDailyLimitSec, _dailyLimitSeconds);
notifyListeners();
}
Future<void> setPerSessionMinutes(int minutes) async {
_perSessionSeconds = minutes * 60;
await _prefs?.setInt(_keyPerSessionSec, _perSessionSeconds);
notifyListeners();
}
Future<void> setCooldownMinutes(int minutes) async {
_cooldownSeconds = minutes * 60;
await _prefs?.setInt(_keyCooldownSec, _cooldownSeconds);
notifyListeners();
}
Future<void> setScheduleEnabled(bool v) async {
_scheduleEnabled = v;
await _prefs?.setBool(_keyScheduleEnabled, v);
notifyListeners();
}
Future<void> setScheduleTime({
required int startH,
required int startM,
required int endH,
required int endM,
}) async {
_schedEndHour = endH;
_schedEndMin = endM;
// Update the first schedule for compatibility? Or just replace all?
// Let's replace all schedules with this one if this method is called.
_schedules = [
FocusSchedule(
startHour: startH,
startMinute: startM,
endHour: endH,
endMinute: endM,
),
];
await _prefs?.setInt(_keyScheduleStartHour, startH);
await _prefs?.setInt(_keyScheduleStartMin, startM);
await _prefs?.setInt(_keyScheduleEndHour, endH);
await _prefs?.setInt(_keyScheduleEndMin, endM);
await _saveSchedulesToPrefs();
notifyListeners();
}
Future<void> _saveSchedulesToPrefs() async {
final json = jsonEncode(_schedules.map((s) => s.toJson()).toList());
await _prefs?.setString(_keySchedulesJson, json);
}
Future<void> addSchedule(FocusSchedule s) async {
_schedules.add(s);
await _saveSchedulesToPrefs();
notifyListeners();
}
Future<void> removeScheduleAt(int index) async {
if (index >= 0 && index < _schedules.length) {
_schedules.removeAt(index);
await _saveSchedulesToPrefs();
notifyListeners();
}
}
Future<void> updateScheduleAt(int index, FocusSchedule s) async {
if (index >= 0 && index < _schedules.length) {
_schedules[index] = s;
await _saveSchedulesToPrefs();
notifyListeners();
}
}
@override
void dispose() {
_ticker?.cancel();
super.dispose();
}
}