focus-flow/apps/focus_flow_flutter/README.md

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<!-- SPDX-FileCopyrightText: 2026 FocusFlow contributors -->
<!-- SPDX-License-Identifier: AGPL-3.0-only -->
# FocusFlow Flutter
Flutter desktop app target for the FocusFlow UI work.
## Current Scope
The app launches into the compact Today timeline. Normal startup now opens an
on-disk SQLite database and bootstraps owner settings plus the default Home
project when they are missing.
The compact Today screen can toggle completion for currently rendered task
cards. Backlog widgets and quick-capture controls exist for tests and focused
composition paths, but the sidebar Backlog navigation remains out of scope for
this screen.
## Runtime Data
Normal runtime uses `lib/app/persistent_scheduler_composition.dart`, which reads
`SCHEDULER_SQLITE_PATH` from a Dart define. If no define is present, it uses the
local dev convention:
```text
~/ADHD_Scheduler/scheduler.sqlite
```
Static demo data still lives in `lib/app/demo_scheduler_composition.dart`, but
it is for deterministic widget/visual tests and explicit demo composition only.
It is not inserted during normal startup.
Widgets consume `TodayScreenData` from `lib/models/today_screen_models.dart`.
Scheduler core remains the source of truth for task state and Today ordering.
## Runtime Config
The app optionally reads a JSON config file from:
```text
~/ADHD_Scheduler/config.json
```
Override the config path with:
```sh
flutter run -d linux --dart-define=FOCUS_FLOW_CONFIG_PATH=/tmp/focus_flow_config.json
```
Supported optional keys:
```json
{
"LogLevel": "fine",
"LogfileLocation": "~/ADHD_Scheduler/debug/"
}
```
`LogLevel` accepts `finest`, `finer`, `fine`, `debug`, `info`, `warn`, or
`error`.
`LogfileLocation` is treated as a directory, and the app writes
`focus_flow.log` inside it. If either key is absent or invalid, file logging is
not enabled and the app ignores that setting.
Verbose log levels can include automatic caller information without requiring
each call site to pass it manually. `finest` includes caller frames for every
written message. `fine`, `finer`, and `finest` include caller frames for
warnings and errors. This caller lookup is skipped when the configured level
does not require it.
For expensive debug/detail messages, pass a lazy closure so work is skipped when
the configured level would not write the log:
```dart
logger.debug(() => 'state=${expensiveStateDump()}');
```
## Package Boundary
Allowed app imports include public scheduler APIs such as:
```dart
import 'package:scheduler_core/scheduler_core.dart';
```
The persistent composition root may import
`package:scheduler_persistence_sqlite/sqlite.dart` and `dart:io` for runtime
path resolution. Widgets/controllers must not import scheduler `src/` files,
Drift, SQLite adapters, desktop notification implementations, backup/export
packages, or direct OS APIs. `test/forbidden_imports_test.dart` enforces that
boundary.
## Intentionally No-op
- Sidebar navigation.
- Date navigation and calendar buttons.
- Compact/Normal toggle.
- Settings button.
- Show upcoming.
- Timeline card action icons.
- Modal Push, Move to Backlog, and Break up buttons.
## Persistence Proof
Current focused tests prove:
- first run opens an empty SQLite file without seeded task rows,
- quick capture writes a backlog task,
- scheduling writes planned Today placement,
- done and not-done state persists,
- closing and reopening the same SQLite file reloads the task state.
Manual verification:
```sh
scripts/bootstrap_dev.sh
scripts/dev.sh --sqlite /tmp/focus_flow_persistence_plan_1.sqlite
```
Use the same `--sqlite` path after closing the app to confirm state persists. To
reset local dev data, close the app and delete the chosen `.sqlite` file. This is
only a dev reset; backup/restore UI remains out of scope.
## Commands
Run `scripts/bootstrap_dev.sh` once from the repository root to create the
default SQLite directory.
Run the desktop UI from this directory:
```sh
flutter pub get
flutter run -d linux
```
Replace `linux` with `macos` or `windows` on those hosts. The default database
path is `~/ADHD_Scheduler/scheduler.sqlite`. If Flutter reports that the
desktop project is not configured for that platform, generate the missing
runner from this directory:
```sh
flutter create --platforms=linux .
```
Use `--platforms=macos` or `--platforms=windows` for those hosts.
Use a disposable dev database when needed:
```sh
flutter run -d linux --dart-define=SCHEDULER_SQLITE_PATH=/tmp/focus_flow_dev.sqlite
```
Check the app from this directory:
```sh
flutter analyze
flutter test
```
Run these from `apps/focus_flow_flutter/`.
## Next Plans
- Wire visible Backlog navigation and quick-capture UI into the main shell.
- Wire functional Push, Move to Backlog, and Break up actions.
- Add real navigation/settings.
- Add Shield/Recovery only in a later scope.