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DriverVault/Phone App/README.md
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tajniak81andClaude Opus 5 e249c2f4d8 Phone App: connected service, charging cost, a tab picker and data export
Both READMEs claimed web parity with data export/import as the only
omission. That was three gaps out of date: the car screen had no
connected-service tab, no per-car charging-cost tab, and no way to say what
a car's page shows - all three of which the web has had since the car view
became a property of the car rather than of the browser.

The tab bar was the thing blocking the rest. It was a fixed list of eight
Tab(text: "Information") literals, so it could neither grow a tab nor read
an arrangement, and it sat outside the translation system that the rest of
the app has used since b6bb6b1. It now builds from the car's own tabOrder
and hiddenTabs, and labels come from car.tabs.* like the web's.

Rather than retype four subtrees of strings in three languages, the shared
ones - car.*, settings.advanced, forms.charging, forms.import and the
common keys the phone was missing - are copied out of the Web App's own
language files, with the phone's existing wording winning every collision.
Polish and Danish therefore arrive complete and cannot drift between the
two apps. Only five strings are genuinely phone-only: the reorder hint, the
saved-file message, the open action and two validation lines.

The connected-service tab mirrors ProviderPanel: headline readings, the
offer to take a provider odometer that is ahead of the stored one, the
vehicle record, and one collapsible card per capability, rendered from the
server's flattened key/value pairs so a provider adding a field surfaces it
without touching this app. Two deliberate differences. The raw-payload
disclosure is dropped - Toyota's eight sections are megabytes of JSON on a
phone screen, and the flattened fields carry the same content. And the
readings cannot be dragged here, though a stored metricOrder is still
honoured, so an arrangement made on the web carries over.

The view picker takes the same line on gestures. The web rearranges by
dragging the tab bar itself and the Information rows themselves; on a touch
screen that gesture belongs to the tab bar, so both arrangements are made
in the picker with a handle instead, and hiddenTabs, hiddenFields, tabOrder
and fieldOrder all save in one PUT. The key catalogues live in
car_view_sheet.dart and mirror hideableCarTabs / arrangeableCarTabs /
hideableCarFields in cars.go, because the server rejects anything else.
arrangeKeys applies a partial stored order the way the API documents it: an
unknown key is dropped and an unnamed one follows the arranged ones, which
is what puts a tab added in a later release at the end of somebody's page
rather than the middle of it.

Charging cost is the electric twin of Fuel and is built as one - the same
stats panel, tile and form shape, measured between full charges. It is the
per-car cost log, not the Charging section in the bottom bar, which remains
the charger network and OCPP control.

Export and import needed a phone answer to two browser affordances. The
export is written to the app's documents directory under the filename the
server's Content-Disposition names, and offered to whatever opens JSON via
open_filex - the same route attachments already take. The import goes
through the system file picker, validates the file locally, and confirms
with the number of cars the file actually holds, because the server always
creates new records and never merges.

The one field worth calling out on the client: _carPayload still leaves the
provider link and the view arrangement out, matching carPayload in
records.go, so saving the car form cannot silently unlink a car or undo an
arrangement.

Known gap, deliberately not closed here: the older sheets in
record_form_sheets.dart and most of car_detail_screen.dart still carry
hardcoded English. Everything added here and every tab label goes through
t(), but translating the rest of the car screen is its own change and would
have buried this one.

Verified by flutter analyze (clean), flutter test - 13 pass, 6 of them new,
covering arrangeKeys against partial, unknown and duplicate keys, the
charging models keeping uncomputed figures null rather than a plausible
zero, the new Car fields, and ProviderSnapshot parsing an unreachable
provider as an answer rather than a failure - and flutter build apk
--debug, which succeeds. The Kotlin Gradle plugin warnings in that build
are pre-existing.

Not verified: nothing was run against a live API Server or on a device, so
the new screens have not been driven end to end - only compiled, analyzed
and unit-tested.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-21 21:33:58 +02:00

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# 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.
## Biometric / face sign-in & app lock
Fingerprint and face-recognition sign-in via `local_auth`, with credentials kept
in Android Keystorebacked 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
```bash
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
```