DriverVault/Phone App/README.md

DriverVault — Phone App (Flutter)

A Flutter client for the DriverVault maintenance tracker. Talks only to the API Server (same contract and auth as the web app — a PocketBase token relayed by the server, not a JWT the server mints). At full feature parity with the web app.

Project name drivervault_phone, package id com.drivervault.phoneapp. Android is the supported target — the older Flutter-web build path is deprecated.

Features

Once signed in, RootShell hosts the app behind a persistent bottom navigation bar — Garage, Charging, Settings, and Users for admins — in an IndexedStack, so each section keeps its state as you switch tabs.

• Login — email/password against /api/auth/login, password show/hide, and a collapsible Server settings section to override the API base URL on-device.

• Biometric / face sign-in + app lock — see the dedicated section below.

• Garage (dashboard) — car list with next-due status badges (date + km, worst-of), a "shared" chip on cars owned by someone else, pull-to-refresh and an Add car FAB.

• Car detail — all spec fields (incl. VIN and transmission / differential / brake / coolant specs), a share sheet (owner only), quick odometer update, edit car, and delete car (type-to-confirm; cascades). Actions are gated by the caller's access level (read-only vs write vs owner).

  Which tabs a car shows, and in what order, belongs to the car — the same arrangement the web app reads, so everyone it is shared with sees the same page. Edit it under the tune icon: switch tabs and Information rows on or off, and drag either list by its handle to reorder it. (The web rearranges by dragging the tab bar itself; on a touch screen that gesture is the tab bar's, so both arrangements are made in the picker instead.) Information cannot be switched off — a page with no tabs left would be a dead end — but it can be moved. The tabs, in their default order:

  • Connected service — everything the manufacturer's own app knows about this car, read live under your account: headline readings (odometer, fuel or battery, range, charging state, position), the vehicle record, and one card per capability the plugin exposes, rendered from the server's flattened key/value pairs so a provider adding a field surfaces it without an app change. Offers to take the provider's odometer when it is ahead of the stored one. A car with no link yet gets a connect card instead, and the tab is hidden entirely for a user with no manufacturer account connected. Because the read runs under your own credentials, a car shared from someone else shows data here only if that vehicle is on your account too — it says so rather than failing.
  • Service history — date/odometer plus which parts were changed, with the next-due date/km derived by the server.
  • Technical check history — the mandatory roadworthiness inspections (przegląd techniczny, MOT, TÜV). Result, cost, station, and the certificate's valid-until, which overrides the car's interval when present. A failed check derives no next date.
  • Maintenance — workshop visits and repairs outside the routine schedule: type/status, workshop, parts used, labour + parts cost, invoice number and a warranty-until badge.
  • Fuel — refills with a summary panel (average / best / worst consumption, cost per km, price per litre). Consumption is measured between full tanks, so partial fills roll into the next full one and a flagged missed fill leaves its window uncomputed rather than reporting a fictional figure.
  • Charging cost — charges with a summary panel (average / best / worst kWh/100km, cost per km, price per kWh). The electric twin of Fuel, and derived the same way: consumption is measured between full charges, so a top-up rolls into the next full one. Distinct from the Charging section in the bottom bar, which is the charger network and OCPP control.
  • Documents — insurance, registration, road tax and the rest, with a renewal badge driven by the server's expiry assessment.
  • Parts catalog — the per-car parts list.
  • Reminders — date- and/or odometer-triggered, one-off or recurring, with a Mark done action. Reminders the server derived from a document or service record are shown read-only.

• Attachments — one optional file per service record, technical check, workshop visit, refill, charge, document and part (PDF or image, up to 10MB). Picked with file_picker, fetched back through the API Server — never a public URL — and opened with the phone's own viewer via open_filex.

• Charging — mirrors the web Charging.vue, split into two tabs. Public is a discovery map with a demo session and nearby stations: presentational placeholders, because there is no public-charging API yet (same as the web). Home carries the one real piece — an OCPP control card that drives your own charger through the Anker Solix control endpoints, once you pick Own/Proxy CSMS under Settings → Integrations.

• Settings — account (name / email verification / password), appearance (theme + dark mode, language, region, date format, currency, font size), profile (avatar via image_picker, bio), integrations (Toyota, Anker Solix), Security (biometric toggle), Organization (create your own — which makes you its admin — or rename/delete the one you administer), data export/import, and the account-deletion state machine. Export writes the account JSON into the app's own documents directory and offers to open it; import picks a previously exported file and always creates new records, so it asks first, with the number of cars the file actually holds. Auth relays PocketBase's own stateless tokens, so there is no per-device session list to show or revoke.

• Users (admin) — user management tab (list / create / role / reset password / delete), shown only for the admin role.

Sharing/ownership: Car.access drives isOwner / canWrite / isReadOnly getters that gate the UI, mirroring the server's access checks.

Language, region & currency

Language and region are two pickers over the one stored BCP-47 tag (en-US), so the pair can be mixed — English in Poland, say. Currency is display-only: nothing is converted, so changing it reinterprets existing amounts rather than recalculating them. All three lists mirror the API's (validCurrencies and the locale pattern in internal/api/me.go), with two deliberate differences from the web app:

• Luxembourgish (lb) and Romansh (rm) are not offered. intl ships no date/number symbols for them and throws rather than falling back, which would take out every date on screen. The browser has full ICU data behind it and has no such limit, so the web app can list them.
• Labels are hand-kept (endonyms for languages, English for regions and currencies) because Dart has no Intl.DisplayNames.

Because the server only validates a locale's shape (^[a-z]{2}-[A-Z]{2}$), a tag the phone cannot render can still arrive from the web. format.dart resolves through a supported-language check and falls back to en-US instead of throwing; test/models_format_test.dart covers it.

The car screen and every sheet it opens read their text from the language files. What is left in English is the admin users screen, and the Integrations and charger-control strings — the latter being a gap the web app shares, so it belongs to both apps at once. See TRANSLATIONS.md.

Biometric / face sign-in & app lock

Fingerprint and face-recognition sign-in via local_auth, with credentials kept in Android Keystore–backed secure storage (flutter_secure_storage).

• After a successful password login the app offers to enable biometric login; the entered (known-good) credentials are stored securely.
• The login screen then shows "Sign in with face recognition / fingerprint" buttons (labels reflect the enrolled biometric kinds) and auto-prompts once. On success the stored credentials are replayed against the normal login API, so each biometric sign-in mints a fresh session. Stale credentials (e.g. after a password change) auto-disable biometric login.
• App lock — the token persists, so a valid session normally restores silently. When biometric login is enabled the app instead starts locked (and re-locks when backgrounded) and shows a lock screen requiring a biometric unlock. A 30-second grace period means quick app-switches don't re-lock; a full app close (process kill) always locks on next launch. "Use password instead" on the lock screen logs out and returns to the login form.
• Manage it under Settings → Security (enabling re-confirms the password).

Android host requirements (already configured, don't revert): MainActivity extends FlutterFragmentActivity (required by local_auth), and AndroidManifest.xml declares android.permission.USE_BIOMETRIC.

Configure the API endpoint

The app talks to kDefaultApiBase (see lib/config.dart), default http://localhost:8080/api. Override at build time with --dart-define, or at runtime from the login screen's Server settings (persisted as cc_server_url).

Run & build

flutter pub get

# run on a connected device against a LAN server
flutter run -d <device> --dart-define=API_BASE=http://10.2.1.101:8080/api

# build a debug APK for a real phone on the LAN
flutter build apk --debug --dart-define=API_BASE=http://10.2.1.101:8080/api
adb install -r build/app/outputs/flutter-apk/app-debug.apk
adb shell monkey -p com.drivervault.phoneapp -c android.intent.category.LAUNCHER 1

Notes:

• android/gradle.properties sets kotlin.incremental=false — required because the project lives on drive E: while Gradle/Kotlin caches are on C: (the incremental compiler can't compute cross-root relative paths on Windows).
• AndroidManifest.xml sets android:usesCleartextTraffic="true" because the API base is a plain-HTTP LAN URL.
• The API Server must be running and reachable at the configured URL.

Structure

lib/
├── config.dart        # default API base URL (kDefaultApiBase)
├── models.dart        # Car (+ access getters), the record types, integrations, profile
├── api.dart           # ApiClient — the only thing that calls the API Server
├── auth.dart          # AuthService (token persistence, app-lock flag, ChangeNotifier)
├── biometric.dart     # BiometricAuth — local_auth + secure storage; biometricAuth singleton
├── app_settings.dart  # AppSettings (theme/locale/date/font), persisted; drives MaterialApp
├── i18n.dart          # translation lookup — t("key"); en/pl/da with en fallback
├── theme.dart         # shared colours/tones (status badges, charging tiles)
├── format.dart        # date/km formatting + next-service status (worst-of date/km)
├── main.dart          # app root; routes Login / Lock / RootShell; lifecycle re-lock
├── widgets/
│   └── attachment_field.dart   # pick / view / clear a record's attached file
└── screens/
    ├── root_shell.dart         # bottom-nav shell: Garage, Charging, Settings, Users
    ├── login_screen.dart       lock_screen.dart        dashboard_screen.dart
    ├── car_detail_screen.dart  car_form_sheet.dart     record_form_sheets.dart
    ├── car_view_sheet.dart     # which tabs/rows a car shows + the key catalogue
    ├── provider_tab.dart       # the connected-service tab (MyToyota)
    └── charging_screen.dart    settings_screen.dart    admin_users_screen.dart