diet-guard/app
Krzysztof kuhy Rudnicki c0564c05a2 Let the PC gate set the eating window and meal count
The second edit surface, so the schedule is editable from either device the
way the budget already is. A row on the History tab beside the budget row,
with the same Edit/Save toggle: first hour, last hour, meals per day, and the
derived checkpoint times underneath so the effect of a change is visible
before it is saved.

Validated rather than clamped. MealSchedule.normalized() would happily turn
"20 to 8" into a two-meal day ending at 09:00, which is a sensible defence
against a peer's corrupt sync data and a terrible response to a typo at the
keyboard. Each rejection says what is wrong and leaves the row in edit mode so
the value can be corrected instead of silently becoming a different schedule.
The narrow-window case has its own message, because that one is genuinely
non-obvious: six meals between 08:00 and 11:00 would round two checkpoints
onto the same hour, and a duplicate slot silently drops one.

Three structural notes:

- The row's widgets are their own module. _gatelock_calendar_widgets.py was at
  216 of the 250-line cap and is now 233; adding the row inline would have
  breached it.
- The five new StringVars are grouped in a ScheduleVars dataclass rather than
  flattened onto CalendarVars, which pylint flagged at 11 attributes. Grouping
  two unrelated concerns separately is the better shape anyway.
- _gate_fixtures.py's _GATE_TK_MODULES is a hand-listed patch target, so both
  new modules are registered there. Left out, they build real tk widgets under
  a fake parent -- which is how it failed the first time, loudly, rather than
  silently opening a window.

785 tests, 100% branch coverage.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159b4E5hh512jYUeaJVNxfM
2026-08-16 15:02:35 +02:00
..
.agents/skills Fix pre-existing CI failures (deps, lint, whitespace) 2026-07-10 23:55:56 +02:00
android Build and publish a signed APK on every push to main 2026-08-04 20:55:14 +02:00
assets/icon app: warm-tint the shared palette, fix Snack chip + on-fill contrast 2026-07-21 21:16:26 +02:00
bin Finish the three sync bugs: gate, SIGKILL flag, and silent catches 2026-08-09 22:28:18 +02:00
desktop app: package the desktop app as the web build, and delete the Linux embedder 2026-07-20 16:32:24 +02:00
lib Let the phone set the eating window and meal count 2026-08-16 14:56:12 +02:00
test Let the phone set the eating window and meal count 2026-08-16 14:56:12 +02:00
web app: run the companion app's desktop target as a web build 2026-07-20 16:31:32 +02:00
.gitignore Add Flutter companion app skeleton with local meal logging 2026-06-22 18:22:42 +02:00
.metadata app: run the companion app's desktop target as a web build 2026-07-20 16:31:32 +02:00
analysis_options.yaml Persist the CI-mirror's analyzer excludes and dependency upgrades 2026-08-14 16:13:46 +02:00
install_arch.sh app: package the desktop app as the web build, and delete the Linux embedder 2026-07-20 16:32:24 +02:00
pubspec.lock Split six Dart test files; share the sync fixtures via a support sibling 2026-08-15 20:49:54 +02:00
pubspec.yaml Let the PC gate set the eating window and meal count 2026-08-16 15:02:35 +02:00
README.md Gate the companion app in the push hook, and document it properly 2026-07-20 17:01:40 +02:00
run.sh app: package the desktop app as the web build, and delete the Linux embedder 2026-07-20 16:32:24 +02:00
skills-lock.json Add Flutter/Dart agent skills and AI rules for Claude Code 2026-06-22 22:53:06 +02:00

diet_guard_app

Companion app for diet_guard: log meals on the phone, and on the Linux desktop, sharing one food log through GitHub-backed sync.

Two targets, and only two

Target What it is
Android a normal Flutter app (flutter build apk)
Linux desktop the Flutter web build, served by a local wrapper and shown in a Chrome --app window

There is no linux/ directory. Flutter's GTK embedder manages ~20fps at 3840x2160 -- measured on a stock flutter create counter app, so it is the toolkit rather than this code -- where the same Dart rendered by Chrome sustains ~144fps (~/todo/docs/desktop-performance-findings.md). Running flutter create --platforms linux here would silently restore the slow path.

Commands

flutter test                     # the app's suite
flutter analyze
bash run.sh                      # build the web bundle and launch the desktop app
bash install_arch.sh             # build + install the pacman package and .desktop entry
flutter build apk --release      # the phone build
adb install -r build/app/outputs/flutter-apk/app-release.apk

Never adb uninstall or pm clear this package: both wipe the on-device log.

The desktop wrapper

bin/diet_guard_desktop.dart is the other half of the desktop app, because a browser cannot touch the filesystem. It:

  • serves the built web assets from build/web (or /opt/diet-guard-app/web once packaged);
  • keeps an on-disk copy of every document and photo under ~/.local/share/diet-guard-desktop/, which is what makes a wiped Chrome profile recoverable -- for photos it is the only copy, since they never sync;
  • holds the GitHub token (~/.config/diet_guard_app/sync_token, falling back to the PC gate's ~/.config/diet_guard/sync_token) and proxies api.github.com plus the device flow, whose endpoints send no CORS headers and so cannot be called from a page at all.

The port (8732) and the Chrome --user-data-dir must stay fixed. IndexedDB is keyed by origin and lives inside that profile, so changing either looks to the app like a device with no history.

Platform seams

dart:io does not fail a web compile; it becomes a stub that throws at runtime, so the symptom of a missed seam is a blank white window rather than a build error. Every platform edge is a conditional export -- document_store*, blob_store*, background_tasks*, notification_backend*, token_vault*, github_client_factory*, attached_image*. Branch on kIsWeb before any Platform.is…, which itself throws on web.

What the desktop genuinely loses, by design rather than omission:

  • Background reminders. A browser runs nothing once its window is closed, so the due-slot check runs in-page every 5 minutes while the window is open. On the PC the real backstop is diet-guard-gate.timer, which locks the screen.
  • Camera capture. The browser picker is a file input.
  • Photo sharing between devices -- unchanged: imagePath was always stripped before push.

Sync identity

Three devices push under diet-guard-sync/devices/: pc (the Python gate), phone, and desktop. Each must keep its own id -- two devices sharing one would overwrite each other's pushed log on every tick.