# VniDrop — native Apple app (iOS / iPadOS / macOS)

A native SwiftUI app for Apple platforms, sharing the existing Rust transfer core
(`crates/vnidrop`) through UniFFI-generated Swift bindings. The Rust crate is not
modified; the Kotlin/Compose app layer is ported to Swift and mirrors the Compose
UI screen-for-screen. Android, Windows, and Linux continue to use `shared/` + Compose.

## Layout

```
apple/
  scripts/build-core.sh     # builds the Rust core + generates Swift bindings + xcframework
  VnidropCore/              # local SwiftPM package: xcframework + generated Vnidrop.swift
  VniDrop/                  # SwiftUI app sources
    App/                    # entry point, object graph, root view, environment
    Core/                   # repository, models, preferences, notifications, progress
    Features/Send|Receive|Approvals|Settings/
    UI/Theme|Components|Navigation|Feedback|Shell/
    Platform/               # pickers, QR, NFC, share/export, per-OS file services
    Resources/              # Localizable.xcstrings, Info.plist, entitlements, assets
  Tests/                    # XCTest (ported progress-derivation assertions)
  Package.swift             # builds VniDrop/ as a library for CLI build/test
  project.yml               # XcodeGen spec for the iOS/macOS app target
```

## Build & run

Prerequisites: Xcode, Rust with the Apple targets
(`aarch64-apple-ios`, `aarch64-apple-ios-sim`, `x86_64-apple-ios`,
`aarch64-apple-darwin`), and `xcodegen` (`brew install xcodegen`).

```bash
# From the repository root:
make apple-core          # Rust core, Swift bindings, and XCFramework
make apple-project       # generate apple/VniDrop.xcodeproj
make open-apple-project  # generate and open the project in Xcode
make build-apple-macos   # unsigned macOS build
make open-apple          # build and launch the macOS app
make build-apple-ios     # unsigned iOS simulator build
make check-apple         # iOS simulator tests
```

Use `APPLE_PROFILE=release` to request a release Rust core, or set
`APPLE_DESTINATION` to override the automatically selected iOS simulator.
Code signing is disabled for the app and test targets; local and CI builds do
not require an Apple Development team or provisioning profile. Make builds can
opt in with `APPLE_CODE_SIGNING=YES`. For signed builds from Xcode, create the
ignored `apple/Local.xcconfig` and override the signing settings there, including
the development team.

## Command-line typecheck & tests

`Package.swift` builds the same sources as a library (minus the `@main` entry),
so the shared logic can be checked and unit-tested without Xcode:

```bash
cd apple
swift build                       # macOS
swift test                        # runs Tests/ (ported progress-derivation assertions)
# iOS typecheck:
swift build --triple arm64-apple-ios16.0-simulator --sdk "$(xcrun --sdk iphonesimulator --show-sdk-path)"
```

## Generated / ignored artifacts

`build-core.sh` produces build outputs that are gitignored (see `apple/.gitignore`):
`VnidropCore/vnidrop.xcframework/`, `VnidropCore/Sources/VnidropCore/Vnidrop.swift`,
and `.build-core/`. A clean checkout must run `build-core.sh` before generating or
opening the Xcode project. `VniDrop.xcodeproj` itself is generated by XcodeGen from
`project.yml` and does not need to be committed.

## Build profile note

The default is `debug`. The workspace `[profile.release]` uses thin LTO, which the
current macOS toolchain miscompiles into corrupt host proc-macro dylibs
("mis-aligned LINKEDIT string pool"). `build-core.sh` sets
`CARGO_PROFILE_DEV_STRIP=none` (matching the existing Gobley Xcode run-script) so
debug builds succeed. For a release core, disable LTO for proc-macros/build
scripts (e.g. add a `[profile.release.build-override] lto = false` locally) — the
Rust crate itself is never changed.

## System frameworks

The Rust core (iroh network stack) links `SystemConfiguration`, `Security`, and
`libresolv`. These are declared in both `Package.swift` (for CLI build/test) and
`project.yml` (for the app target).

## Parity & scope

Screens mirror the Compose UI in `shared/`. Two deliberate simplifications:
- Empty-state Lottie animations are rendered as SF Symbols (no `lottie-ios`
  dependency); swap in `lottie-ios` if exact-parity animation is required.
- The full diagnostics/telemetry stack (`diagnostics/*`) is stubbed behind
  `BugReportService` / `DiagnosticsBuildConfig` and lands in a later phase; the UI
  hides the diagnostics toggle when not compiled in.
```
