The Bedrud Android app is built with Jetpack Compose and Kotlin, providing a native video meeting experience with picture-in-picture, deep linking, and multi-instance support.

Technology Stack

Target: Min SDK 28, Target SDK 35, JDK 17

Directory Structure

apps/android/app/src/main/java/com/bedrud/app/
├── BedrudApplication.kt           # Application class (Koin init)
├── MainActivity.kt                # Single-activity entry point
├── core/
│   ├── api/                       # Retrofit API client
│   │   ├── ApiClient.kt           # Base HTTP client with auth interceptor
│   │   ├── AuthApi.kt             # Auth endpoint definitions
│   │   └── RoomApi.kt             # Room endpoint definitions
│   ├── auth/
│   │   └── AuthManager.kt         # Token management, login/logout
│   ├── call/
│   │   ├── CallService.kt         # Foreground service for calls
│   │   └── CallConnectionService.kt  # Android ConnectionService
│   ├── deeplink/
│   │   └── DeepLinkHandler.kt     # Handle bedrud.com deep links
│   ├── di/
│   │   └── AppModule.kt           # Koin module definitions
│   ├── instance/
│   │   ├── InstanceManager.kt     # Central multi-instance orchestrator
│   │   ├── InstanceStore.kt       # Persistent instance storage
│   │   └── InstanceDeps.kt        # Per-instance dependency container
│   ├── livekit/
│   │   └── RoomManager.kt         # LiveKit room connection manager
│   └── pip/
│       └── PipManager.kt          # Picture-in-Picture controller
├── models/
│   ├── User.kt                    # User data model
│   ├── Room.kt                    # Room data model
│   ├── Instance.kt                # Server instance model
│   └── ApiResponse.kt             # API response wrappers
└── ui/
    ├── screens/
    │   ├── auth/
    │   │   ├── LoginScreen.kt     # Email/password + passkey login
    │   │   └── RegisterScreen.kt  # Account registration
    │   ├── dashboard/
    │   │   └── DashboardScreen.kt # Room list and management
    │   ├── meeting/
    │   │   └── MeetingScreen.kt   # Video call interface
    │   ├── instance/
    │   │   ├── AddInstanceScreen.kt    # Add server instance
    │   │   └── InstanceSwitcher.kt     # Switch between instances
    │   ├── profile/
    │   │   └── ProfileScreen.kt   # User profile
    │   └── settings/
    │       └── SettingsScreen.kt  # App settings
    ├── components/                 # Reusable Compose components
    └── theme/                      # Material 3 theme definition

Multi-Instance Architecture

The Android app supports connecting to multiple Bedrud servers simultaneously.

flowchart TB
    subgraph IM ["InstanceManager (Koin singleton)"]
        IS["InstanceStore<br/>Persists list to SharedPreferences"]
        AI["Active Instance (StateFlow)"]
        INST["instances: List Instance"]
    end
 
    subgraph DEPS ["InstanceDeps"]
        AM["AuthManager"]
        AC["ApiClient"]
        AA["AuthApi"]
        RA["RoomApi"]
        PM["PasskeyManager"]
        RM["RoomManager"]
    end
 
    AI --> DEPS

Key Pattern

All per-instance dependencies are exposed as StateFlow<T?> on InstanceManager. Composables collect them:

val authManager = instanceManager.authManager.collectAsState().value ?: return
val roomApi = instanceManager.roomApi.collectAsState().value ?: return

The ?: return pattern ensures the composable doesn’t render until the instance is fully initialized.

Navigation Flow

flowchart LR
    A["No instances"] --> B[AddInstanceScreen]
    C["Has instances, not logged in"] --> D[LoginScreen]
    E["Has instances, logged in"] --> F[DashboardScreen]

The instance switcher appears as a ModalBottomSheet triggered from the Dashboard toolbar.

Features

Deep Linking

The app handles URLs matching:

• https://bedrud.com/m/* - Direct room join
• https://bedrud.com/c/* - Room join by code

Configured via intent filters in AndroidManifest.xml.

Call Management

• CallService - Foreground service that keeps the connection alive during calls
• CallConnectionService - Integrates with Android’s telephony framework for proper call UI
• Required permissions: MANAGE_OWN_CALLS, FOREGROUND_SERVICE_PHONE_CALL, FOREGROUND_SERVICE_CAMERA, FOREGROUND_SERVICE_MICROPHONE

Picture-in-Picture

The meeting screen supports PiP mode, allowing users to see the video feed while using other apps.

Passkeys

Uses Android’s Credentials API for FIDO2/WebAuthn passkey registration and login.

Building

# Debug APK
make build-android-debug
 
# Release APK (requires keystore.properties)
make build-android
 
# Build + install on connected device
make release-android
 
# Open in Android Studio
make dev-android

Release Signing

Release builds require a keystore.properties file in the android project root with your signing configuration.