jacobh2
9ee67d4c64
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B
61 lines
3.7 KiB
Markdown
61 lines
3.7 KiB
Markdown
# Kvitt Android project
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One Gradle project, modules as in SPEC §6.2 and §14.7. Build only through `tools/gradle-serial.sh` with
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`PATH=/opt/homebrew/opt/openjdk@25/bin:$PATH` (CLAUDE.md › Build and verify). The gate is `tools/gradle-serial.sh check`:
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compile, unit tests (including every vector of `contracts/test-vectors/`), lint (`MissingTranslation` and
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`ExtraTranslation` are errors), the architecture check and the screenshot tests.
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## Modules
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| Module | Plugin (build-logic) | Notes |
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|---|---|---|
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| `:core:model` | `kvitt.jvm.library` | UI contract (§14.2.4), domain types `model.money` (§14.5.1), analytics types `model.analytics` (§14.5.4) |
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| `:domain` | `kvitt.jvm.library` | §14.5 functions; `VectorTest` runs every vector file, copied by `:domain:copyTestVectors` |
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| `:core:design` | `kvitt.android.library` + `kvitt.android.compose` | `KvittTheme`, tokens, shared components, `Canvas` charts, formatters and shared strings (M6, `3080804`; SPEC §6.2); M6 owns the module |
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| `:core:fakes` | `kvitt.android.library` | `FakeRepositories(scenario)`, `FakeScenarios.empty`; scenarios of feature X go in `fakes/<x>/` |
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| `:data` | `kvitt.android.library` + KSP + Room 3 | Room entities and `KvittDatabase` v1, schema in `data/schemas/`; M5 owns the module |
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| `:adapter:fcm` | `kvitt.android.library` | shell; M8 owns it |
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| `:feature:*` | `kvitt.android.feature` | shells with one entry composable; M7a to M7f own them |
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| `:app` | `kvitt.android.application` + compose + hilt + Roborazzi | Application, MainActivity, goldens in `app/src/test/screenshots/` |
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## Architecture check
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`architectureCheck` runs in every module's `check` (`build-logic/.../ArchitectureRules.kt` holds the rules as data).
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It fails on a project dependency outside the §6.2 table, on `:core:fakes` in any configuration that is not a test or
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debug configuration, and, in `:core:model` and `:domain`, on an Android plugin, on a library outside
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`org.jetbrains.kotlin*`, and on any import or fully qualified reference outside `kotlin.*`, `kotlinx.*` and
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`se.hagstedt.kvitt.*` in `src/main`. A new module must be added to `ArchitectureRules.allowed`.
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## Feature convention
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* Each feature module exposes **one composable entry point per screen**. By default it obtains its ViewModel with
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`hiltViewModel()` (from `androidx.hilt:hilt-lifecycle-viewmodel-compose`) and takes navigation as plain lambdas,
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for example:
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```kotlin
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@Composable
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fun AccountDetailScreen(
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onOpenExpense: (ExpenseId) -> Unit,
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onAddExpense: (AccountId) -> Unit,
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onBack: () -> Unit,
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modifier: Modifier = Modifier,
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viewModel: AccountDetailViewModel = hiltViewModel(),
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)
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```
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A stateless overload that takes the `*State` and event lambdas is what previews and screenshot tests render.
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* ViewModels are `@HiltViewModel` classes that receive repositories **through the interfaces of `:core:model`** only.
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`:app` binds those interfaces to `:data` (release) or `:core:fakes` (debug and tests) with Hilt (M8).
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* Features never reference another feature, the `NavHost` or `:data`/`:domain`. `:app` owns the `NavHost` and wires
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the lambdas.
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* Strings live in the feature's own `src/main/res/values/strings.xml` and `values-sv/strings.xml`, keys prefixed with
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the feature name; shared strings in `:core:design`; `:app` holds only the app name.
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* Previews and screenshot tests use `FakeRepositories(scenario)` from `:core:fakes` (`debugImplementation` and
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`testImplementation`, added by the feature plugin). Fakes never reach a release build.
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## Screenshot tests
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Roborazzi on Robolectric. `roborazzi.test.verify=true` in `gradle.properties` makes every unit-test run compare with the
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committed goldens. Re-record an intended change with `tools/gradle-serial.sh recordRoborazziDebug` and open every
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changed PNG before committing.
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