cloner93/expenseshare/navigation

RootRoute          → top-level: Auth or Main
├── AuthRoute      → Login, Register
└── MainRoute      → Dashboard, Friends, Profile

// Root navigation
sealed interface RootRoute {
    @Serializable data object Auth : RootRoute
    @Serializable data object Main : RootRoute
}
 
// Auth flow
sealed interface AuthRoute {
    @Serializable data object Login : AuthRoute
    @Serializable data object Register : AuthRoute
}
 
// Main app tabs
sealed interface MainRoute {
    @Serializable data object Dashboard : MainRoute
    @Serializable data object Friends : MainRoute
    @Serializable data object Profile : MainRoute
}

App Start
└── RootRoute.Auth
    ├── AuthRoute.Login  (startDestination)
    └── AuthRoute.Register
        → on success → RootRoute.Main (popUpTo Auth inclusive)
 
RootRoute.Main
├── MainRoute.Dashboard  (startDestination)
├── MainRoute.Friends
└── MainRoute.Profile
    → on logout → RootRoute.Auth (popUpTo Main inclusive)

// Navigate and clear back stack
navController.navigate(RootRoute.Main) {
    popUpTo(RootRoute.Auth) { inclusive = true }
}
 
// Navigate preserving state
navController.navigate(MainRoute.Friends) {
    popUpTo(navController.graph.startDestinationId) { saveState = true }
    launchSingleTop = true
    restoreState = true
}

NavHost(startDestination = RootRoute.Auth) {
    composable<RootRoute.Auth> { ... }
    composable<RootRoute.Main> { ... }
}

// Applied globally in AppEntryPoint and AuthNavHost:
enterTransition = { EnterTransition.None }
exitTransition = { ExitTransition.None }
popEnterTransition = { EnterTransition.None }
popExitTransition = { ExitTransition.None }

core/navigation → kotlinx-serialization-json