diet-guard/app
Krzysztof kuhy Rudnicki b621ccaed0
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Use gatelock's shared button and WidgetGroup
Phase 2 consumer migration. diet-guard was the donor for make_button, so it
is one of the two proof consumers the extraction is validated against.

- _gatelock_buttons.py is deleted; its make_button now lives in gatelock,
  where the variant API (text colour picked *from* the fill) and the
  <Return>/<KP_Enter> bindings serve all four gates instead of one. Call
  sites pass _COLORS explicitly, since a shared widget cannot read this
  app's module-level palette. Pixel-identical: BODY/LABEL were -16/-14 and
  LockConfig.font("body"/"label") yields the same negative (pixel) sizes.
- WidgetGroup now subclasses gatelock's, keeping the list[_W] constructor and
  re-narrowing `first` to the widget type. The specialized groups (EntryGroup
  over a shared StringVar, TextGroup, ListboxGroup, MacroGroup) are unchanged
  behaviour and stay -- gatelock has no equivalent for them.
- bind() keeps *replacing* semantics, inverted from gatelock's additive
  default and now documented + tested. _wire_events runs once per
  build_surface and again on rebuild, so an additive bind would stack a
  second <Return> handler on every surviving widget and log the meal twice.
- conftest swaps gatelock.widgets into the fake-tk module list in the same
  edit that removes _gatelock_buttons, since that list fails the whole suite
  if it drifts in either direction.

All three gatelock pins move together to v0.5.0 -- pyproject, requirements.txt
and the pylint hook's additional_dependencies. The config comment already
warned that a lagging hook pin lints against a gatelock without the API the
code calls; that is exactly what it did before this bump.

The "<Return> activates a button" test moves to gatelock with the button, so
it runs against real Tk rather than a fake widget that can only report the
binding it was handed.

Verified: 692 tests, 100% branch coverage against the *installed* gatelock
0.5.0 (not a PYTHONPATH shim); the gate builds under xvfb and <Return> and
<KP_Enter> both fire a real button's command, with the accent focus ring
(#B8862E, 2px) instead of Tk's invisible 1px black.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U4Rj3s7K2qzrLNgJqqPhno
2026-08-15 14:23:11 +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 Remove the Snack chip from the phone's slot selector 2026-08-14 22:31:09 +02:00
test Remove the Snack chip from the phone's slot selector 2026-08-14 22:31:09 +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 Persist the CI-mirror's analyzer excludes and dependency upgrades 2026-08-14 16:13:46 +02:00
pubspec.yaml Use gatelock's shared button and WidgetGroup 2026-08-15 14:23:11 +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.