---
phase: 04-notifications
verified: 2026-03-16T15:00:00Z
status: passed
score: 21/21 must-haves verified
re_verification: false
---

# Phase 4: Notifications Verification Report

**Phase Goal:** Users receive a daily summary notification reminding them of today's task count, and can control notification behavior from settings
**Verified:** 2026-03-16T15:00:00Z
**Status:** PASSED
**Re-verification:** No — initial verification

---

## Goal Achievement

### Observable Truths

All must-haves are drawn from the PLAN frontmatter of plans 01 and 02. Plan 03 is a verification-gate plan (no truths, no artifacts) and contributes no additional must-haves.

#### Plan 01 Must-Haves

| #  | Truth                                                                                         | Status     | Evidence                                                                                          |
|----|-----------------------------------------------------------------------------------------------|------------|---------------------------------------------------------------------------------------------------|
| 1  | NotificationService can schedule a daily notification at a given TimeOfDay                    | VERIFIED   | `scheduleDailyNotification` in `notification_service.dart` lines 30-55; uses `zonedSchedule`     |
| 2  | NotificationService can cancel all scheduled notifications                                    | VERIFIED   | `cancelAll()` delegates to `_plugin.cancelAll()` at line 57                                      |
| 3  | NotificationService can request POST_NOTIFICATIONS permission                                 | VERIFIED   | `requestPermission()` resolves `AndroidFlutterLocalNotificationsPlugin`, calls `requestNotificationsPermission()` |
| 4  | NotificationSettingsNotifier persists enabled boolean and TimeOfDay to SharedPreferences      | VERIFIED   | `setEnabled` and `setTime` each call `SharedPreferences.getInstance()` and persist values        |
| 5  | NotificationSettingsNotifier loads persisted values on build                                  | VERIFIED   | `build()` calls `_load()` which reads SharedPreferences and overrides state asynchronously        |
| 6  | DailyPlanDao can return a one-shot count of overdue + today tasks                             | VERIFIED   | `getOverdueAndTodayTaskCount` and `getOverdueTaskCount` present in `daily_plan_dao.dart` lines 36-55 |
| 7  | Timezone is initialized before any notification scheduling                                    | VERIFIED   | `main.dart`: `tz.initializeTimeZones()` → `FlutterTimezone.getLocalTimezone()` → `tz.setLocalLocation()` → `NotificationService().initialize()` |
| 8  | Android build compiles with core library desugaring enabled                                   | VERIFIED   | `build.gradle.kts` line 14: `isCoreLibraryDesugaringEnabled = true`; line 48: `coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.4")` |
| 9  | AndroidManifest has POST_NOTIFICATIONS permission, RECEIVE_BOOT_COMPLETED permission, and boot receiver | VERIFIED | Lines 2-4: both permissions; lines 38-48: `ScheduledNotificationReceiver` (exported=false) and `ScheduledNotificationBootReceiver` (exported=true) with BOOT_COMPLETED intent-filter |

#### Plan 02 Must-Haves

| #  | Truth                                                                                         | Status     | Evidence                                                                                          |
|----|-----------------------------------------------------------------------------------------------|------------|---------------------------------------------------------------------------------------------------|
| 10 | Settings screen shows a Benachrichtigungen section between Darstellung and Uber               | VERIFIED   | `settings_screen.dart` lines 144-173: section inserted between `Divider` after Darstellung and `Divider` before Uber |
| 11 | SwitchListTile toggles notification enabled/disabled                                          | VERIFIED   | Line 156: `SwitchListTile` with `value: notificationSettings.enabled` and `onChanged: _onNotificationToggle` |
| 12 | When toggle is ON, time picker row appears below with progressive disclosure animation        | VERIFIED   | Lines 162-171: `AnimatedSize` wrapping conditional `ListTile` when `notificationSettings.enabled` is true |
| 13 | When toggle is OFF, time picker row is hidden                                                 | VERIFIED   | Same `AnimatedSize`: returns `SizedBox.shrink()` when disabled; widget test confirms `find.text('Uhrzeit')` finds nothing |
| 14 | Tapping time row opens Material 3 showTimePicker dialog                                       | VERIFIED   | `_onPickTime()` at line 78 calls `showTimePicker` with `initialEntryMode: TimePickerEntryMode.dial` |
| 15 | Toggling ON requests POST_NOTIFICATIONS permission on Android 13+                             | VERIFIED   | `_onNotificationToggle(true)` immediately calls `NotificationService().requestPermission()` before state update |
| 16 | If permission denied, toggle reverts to OFF                                                   | VERIFIED   | Lines 23-34: if `!granted`, SnackBar shown and early return — `setEnabled` is never called, state stays off |
| 17 | If permanently denied, user is guided to system notification settings                         | VERIFIED   | SnackBar message `notificationsPermissionDeniedHint` tells user to go to system settings. Note: no action button (simplified per plan's "simpler approach" option — v21 has no `openNotificationSettings()`) |
| 18 | When enabled + time set, daily notification is scheduled with correct body from DAO query     | VERIFIED   | `_scheduleNotification()` lines 49-76: queries `getOverdueAndTodayTaskCount` and `getOverdueTaskCount`, builds body, calls `scheduleDailyNotification` |
| 19 | Skip notification scheduling when task count is 0                                             | VERIFIED   | Lines 58-62: if `total == 0`, calls `cancelAll()` and returns without scheduling                  |
| 20 | Notification body shows overdue count only when overdue > 0                                   | VERIFIED   | Lines 66-68: `overdue > 0` uses `notificationBodyWithOverdue(total, overdue)`, else `notificationBody(total)` |
| 21 | Tapping notification navigates to Home tab                                                    | VERIFIED   | `notification_service.dart` line 79: `_onTap` calls `router.go('/')` using top-level `router` from `router.dart` |

**Score:** 21/21 truths verified

---

### Required Artifacts

| Artifact                                                                      | Provides                                              | Status     | Details                                                    |
|-------------------------------------------------------------------------------|-------------------------------------------------------|------------|------------------------------------------------------------|
| `lib/core/notifications/notification_service.dart`                            | Singleton wrapper around FlutterLocalNotificationsPlugin | VERIFIED | 81 lines; substantive; wired in main.dart and settings_screen.dart |
| `lib/core/notifications/notification_settings_notifier.dart`                  | Riverpod notifier for notification enabled + time     | VERIFIED   | 52 lines; `@Riverpod(keepAlive: true)`; wired in settings_screen.dart |
| `lib/core/notifications/notification_settings_notifier.g.dart`                | Riverpod generated code; provider `notificationSettingsProvider` | VERIFIED | Generated; referenced in settings tests and screen |
| `lib/features/settings/presentation/settings_screen.dart`                    | Benachrichtigungen section with SwitchListTile + AnimatedSize | VERIFIED | 196 lines; ConsumerStatefulWidget; imports and uses both notifier and service |
| `test/core/notifications/notification_service_test.dart`                     | Unit tests for singleton and nextInstanceOf TZ logic  | VERIFIED   | 97 lines; 5 tests; all pass                                |
| `test/core/notifications/notification_settings_notifier_test.dart`           | Unit tests for persistence and state management       | VERIFIED   | 132 lines; 7 tests; all pass                               |
| `test/features/settings/settings_screen_test.dart`                           | Widget tests for notification settings UI             | VERIFIED   | 109 lines; 5 widget tests; all pass                        |
| `android/app/src/main/AndroidManifest.xml`                                   | Android notification permissions and receivers        | VERIFIED   | POST_NOTIFICATIONS + RECEIVE_BOOT_COMPLETED + both receivers |
| `android/app/build.gradle.kts`                                               | Android build with desugaring                         | VERIFIED   | compileSdk=35, isCoreLibraryDesugaringEnabled=true, desugar_jdk_libs:2.1.4 |
| `lib/main.dart`                                                               | Timezone init + NotificationService initialization    | VERIFIED   | 17 lines; full async chain before runApp                   |
| `lib/features/home/data/daily_plan_dao.dart`                                 | One-shot task count queries for notification body     | VERIFIED   | `getOverdueAndTodayTaskCount` and `getOverdueTaskCount` present and substantive |
| `lib/l10n/app_de.arb`                                                        | 7 notification ARB strings                            | VERIFIED   | Lines 92-109: all 7 keys present with correct placeholders |

---

### Key Link Verification

| From                                        | To                                           | Via                                          | Status   | Details                                                        |
|---------------------------------------------|----------------------------------------------|----------------------------------------------|----------|----------------------------------------------------------------|
| `notification_service.dart`                 | `flutter_local_notifications`                | `FlutterLocalNotificationsPlugin`            | WIRED    | Imported line 3; instantiated line 13; used throughout         |
| `notification_settings_notifier.dart`       | `shared_preferences`                         | `SharedPreferences.getInstance()`            | WIRED    | Lines 30, 42, 48: three persistence calls                      |
| `lib/main.dart`                             | `notification_service.dart`                  | `NotificationService().initialize()`         | WIRED    | Line 15: called after timezone init, before runApp             |
| `settings_screen.dart`                      | `notification_settings_notifier.dart`        | `ref.watch(notificationSettingsProvider)`    | WIRED    | Line 98: watch; lines 37, 43, 50, 79, 87: read+notifier        |
| `settings_screen.dart`                      | `notification_service.dart`                  | `NotificationService().scheduleDailyNotification` | WIRED | Line 71: call in `_scheduleNotification()`; line 45: `cancelAll()` |
| `notification_service.dart`                 | `router.dart`                                | `router.go('/')`                             | WIRED    | Line 6 import; line 79: `router.go('/')` in `_onTap`           |

---

### Requirements Coverage

| Requirement | Source Plan    | Description                                                                   | Status    | Evidence                                                                          |
|-------------|----------------|-------------------------------------------------------------------------------|-----------|-----------------------------------------------------------------------------------|
| NOTF-01     | 04-01, 04-02, 04-03 | User receives a daily summary notification showing today's task count at a configurable time | SATISFIED | NotificationService with `scheduleDailyNotification`, DailyPlanDao queries, AndroidManifest configured, timezone initialized in main.dart, scheduling driven by DAO task count |
| NOTF-02     | 04-01, 04-02, 04-03 | User can enable/disable notifications in settings                              | SATISFIED | NotificationSettingsNotifier with SharedPreferences persistence, SwitchListTile in Settings screen, AnimatedSize time picker, permission request flow |

No orphaned requirements found. All requirements mapped to Phase 4 in REQUIREMENTS.md (NOTF-01, NOTF-02) are claimed and satisfied by the phase plans.

---

### Anti-Patterns Found

No anti-patterns found. Scanned:
- `lib/core/notifications/notification_service.dart`
- `lib/core/notifications/notification_settings_notifier.dart`
- `lib/features/settings/presentation/settings_screen.dart`

No TODOs, FIXMEs, placeholder comments, empty implementations, or stub handlers detected.

---

### Human Verification Required

The following behaviors require a physical Android device or emulator to verify:

#### 1. Permission Grant and Notification Scheduling

**Test:** Install app on Android 13+ device. Navigate to Settings. Toggle "Tagliche Erinnerung" ON.
**Expected:** Android system permission dialog appears. After granting, the time row appears with the default 07:00 time.
**Why human:** `requestPermission()` dispatches to the Android plugin at native level — cannot be exercised without a real Android environment.

#### 2. Permission Denial Flow

**Test:** On Android 13+, toggle ON, then deny the system permission dialog.
**Expected:** Toggle remains OFF. A SnackBar appears with "Benachrichtigungen sind in den Systemeinstellungen deaktiviert. Tippe hier, um sie zu aktivieren."
**Why human:** Native permission dialog interaction requires device runtime.

#### 3. Daily Notification Delivery

**Test:** Enable notifications, set a time 1-2 minutes in the future. Wait.
**Expected:** A notification titled "Dein Tagesplan" appears in the system tray at the scheduled time with a body showing today's task count (e.g. "3 Aufgaben fallig").
**Why human:** Notification delivery at a scheduled TZDateTime requires actual system time passing.

#### 4. Notification Tap Navigation

**Test:** Tap the delivered notification from the system tray while the app is in the background.
**Expected:** App opens (or foregrounds) directly to the Home/Daily Plan tab.
**Why human:** `_onTap` with `router.go('/')` requires the notification to actually arrive and the app to receive the tap event.

#### 5. Boot Receiver

**Test:** Enable notifications on a device, reboot the device.
**Expected:** Notification continues to fire at the scheduled time after reboot (rescheduled by `ScheduledNotificationBootReceiver`).
**Why human:** Requires physical device reboot with the notification enabled.

---

### Summary

Phase 4 goal is achieved. All 21 observable truths from the plan frontmatter are verified against the actual codebase:

- **NotificationService** is a complete, non-stub singleton wrapping `FlutterLocalNotificationsPlugin` with TZ-aware scheduling, permission request, and cancel.
- **NotificationSettingsNotifier** persists `enabled`, `hour`, and `minute` to SharedPreferences using the `@Riverpod(keepAlive: true)` pattern, following the established ThemeNotifier convention.
- **DailyPlanDao** has two real Drift queries (`getOverdueAndTodayTaskCount`, `getOverdueTaskCount`) that count tasks for the notification body.
- **Android build** is fully configured: compileSdk=35, core library desugaring enabled, POST_NOTIFICATIONS + RECEIVE_BOOT_COMPLETED permissions, and both receivers registered in AndroidManifest.
- **main.dart** correctly initializes timezone data and sets the local location before calling `NotificationService().initialize()`.
- **SettingsScreen** is a `ConsumerStatefulWidget` with a Benachrichtigungen section (SwitchListTile + AnimatedSize time picker) inserted between the Darstellung and Uber sections. The permission flow, scheduling logic, and skip-on-zero behavior are all substantively implemented.
- **Notification tap navigation** is wired: `_onTap` in NotificationService imports the top-level `router` and calls `router.go('/')`.
- **All 7 ARB keys** are present in `app_de.arb` with correct parameterization for `notificationBody` and `notificationBodyWithOverdue`.
- **89/89 tests pass** and **dart analyze --fatal-infos** reports zero issues.
- **NOTF-01** and **NOTF-02** are fully satisfied. No orphaned requirements.

Five items require human/device verification (notification delivery, permission dialog, tap navigation, boot receiver) as they depend on Android runtime behavior that cannot be verified programmatically.

---

_Verified: 2026-03-16T15:00:00Z_
_Verifier: Claude (gsd-verifier)_
