{
  "output": "package com.servicebook.ui.navigation\n\nimport android.content.Intent\nimport androidx.activity.compose.rememberLauncherForActivityResult\nimport androidx.activity.result.contract.ActivityResultContracts\nimport androidx.compose.animation.AnimatedContentTransitionScope\nimport androidx.compose.animation.ContentTransform\nimport androidx.compose.animation.core.CubicBezierEasing\nimport androidx.compose.animation.core.tween\nimport androidx.compose.animation.fadeIn\nimport androidx.compose.animation.fadeOut\nimport androidx.compose.animation.slideInHorizontally\nimport androidx.compose.animation.slideOutHorizontally\nimport androidx.compose.animation.togetherWith\nimport androidx.compose.foundation.background\nimport androidx.compose.foundation.layout.Arrangement\nimport androidx.compose.foundation.layout.Column\nimport androidx.compose.foundation.layout.Spacer\nimport androidx.compose.foundation.layout.fillMaxSize\nimport androidx.compose.foundation.layout.height\nimport androidx.compose.foundation.layout.padding\nimport androidx.compose.material3.Button\nimport androidx.compose.material3.ExperimentalMaterial3Api\nimport androidx.compose.material3.MaterialTheme\nimport androidx.compose.material3.Scaffold\nimport androidx.compose.material3.Surface\nimport androidx.compose.material3.Text\nimport androidx.compose.runtime.Composable\nimport androidx.compose.runtime.CompositionLocalProvider\nimport androidx.compose.runtime.compositionLocalOf\nimport androidx.compose.runtime.rememberCoroutineScope\nimport androidx.compose.ui.Alignment\nimport androidx.compose.ui.Modifier\nimport androidx.compose.ui.platform.LocalContext\nimport androidx.compose.ui.res.stringResource\nimport androidx.compose.ui.text.style.TextAlign\nimport androidx.compose.ui.unit.dp\nimport androidx.navigation3.runtime.NavBackStack\nimport androidx.navigation3.runtime.NavKey\nimport androidx.navigation3.runtime.entryProvider\nimport androidx.navigation3.runtime.rememberNavBackStack\nimport androidx.navigation3.ui.NavDisplay\nimport com.servicebook.R\nimport com.servicebook.ServiceBookApplication\nimport com.servicebook.ui.records.AddEditRecordScreen\nimport com.servicebook.ui.records.ImageViewerScreen\nimport com.servicebook.ui.records.RecordDetailScreen\nimport com.servicebook.ui.records.VehicleDetailScreen\nimport com.servicebook.ui.settings.CategoriesScreen\nimport com.servicebook.ui.settings.SettingsScreen\nimport com.servicebook.ui.vehicles.AddEditVehicleScreen\nimport com.servicebook.ui.vehicles.VehicleListScreen\nimport kotlinx.coroutines.launch\n\nval LocalNavBackStack = compositionLocalOf<NavBackStack<NavKey>> { error(\"No backstack\") }\n\nprivate val MaterialEmphasizedEasing = CubicBezierEasing(0.35f, 0.0f, 0.0f, 1.0f)\nprivate const val STANDARD_DURATION = 450\n\nprivate fun <T> AnimatedContentTransitionScope<T>.modernForwardSpec(): ContentTransform =\n    (\n        slideInHorizontally(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing)) { it } +\n            fadeIn(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing)) togetherWith\n            slideOutHorizontally(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing)) { -it / 4 } +\n            fadeOut(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing))\n    ).apply {\n        targetContentZIndex = 1f\n    }\n\nprivate fun <T> AnimatedContentTransitionScope<T>.modernBackwardSpec(): ContentTransform =\n    (\n        slideInHorizontally(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing)) { -it / 4 } +\n            fadeIn(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing)) togetherWith\n            slideOutHorizontally(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing)) { it } +\n            fadeOut(tween(STANDARD_DURATION, easing = MaterialEmphasizedEasing))\n    ).apply {\n        targetContentZIndex = -1f\n    }\n\n@OptIn(ExperimentalMaterial3Api::class)\n@Composable\nfun AppNavGraph(startDestination: NavKey) {\n    val backStack = rememberNavBackStack(startDestination)\n\n    CompositionLocalProvider(\n        LocalNavBackStack provides backStack,\n    ) {\n        NavDisplay<NavKey>(\n            backStack = backStack,\n            modifier = Modifier.fillMaxSize().background(MaterialTheme.colorScheme.background),\n            onBack = { backStack.removeLastOrNull() },\n            transitionSpec = {\n                modernForwardSpec()\n            },\n            popTransitionSpec = {\n                modernBackwardSpec()\n            },\n            entryProvider =\n                entryProvider {\n                    entry<Setup> {\n                        VanillaEntry {\n                            SetupScreen()\n                        }\n                    }\n                    entry<VehicleList> {\n                        VanillaEntry {\n                            VehicleListScreen(backStack = backStack)\n                        }\n                    }\n                    entry<AddVehicle> {\n                        VanillaEntry {\n                            AddEditVehicleScreen(vehicleId = null, backStack = backStack)\n                        }\n                    }\n                    entry<EditVehicle> { key ->\n                        VanillaEntry {\n                            AddEditVehicleScreen(vehicleId = key.vehicleId, backStack = backStack)\n                        }\n                    }\n                    entry<VehicleDetail> { key ->\n                        VanillaEntry {\n                            VehicleDetailScreen(vehicleId = key.vehicleId, backStack = backStack)\n                        }\n                    }\n                    entry<AddRecord> { key ->\n                        VanillaEntry {\n                            AddEditRecordScreen(vehicleId = key.vehicleId, recordId = null, backStack = backStack)\n                        }\n                    }\n                    entry<EditRecord> { key ->\n                        VanillaEntry {\n                            AddEditRecordScreen(vehicleId = key.vehicleId, recordId = key.recordId, backStack = backStack)\n                        }\n                    }\n                    entry<RecordDetail> { key ->\n                        VanillaEntry {\n                            RecordDetailScreen(vehicleId = key.vehicleId, recordId = key.recordId, backStack = backStack)\n                        }\n                    }\n                    entry<Settings> {\n                        VanillaEntry {\n                            SettingsScreen(backStack = backStack)\n                        }\n                    }\n                    entry<Categories> {\n                        VanillaEntry {\n                            CategoriesScreen(backStack = backStack)\n                        }\n                    }\n                    entry<ImageViewer> { key ->\n                        VanillaEntry {\n                            ImageViewerScreen(uriString = key.uriString, backStack = backStack)\n                        }\n                    }\n                },\n        )\n    }\n}\n\n@Composable\nprivate fun VanillaEntry(content: @Composable () -> Unit) {\n    Surface(\n        modifier = Modifier.fillMaxSize(),\n        color = MaterialTheme.colorScheme.background,\n    ) {\n        content()\n    }\n}\n\n@Composable\ninternal fun SetupScreen() {\n    val context = LocalContext.current\n    val application = context.applicationContext as ServiceBookApplication\n    val scope = rememberCoroutineScope()\n\n    val folderPicker =\n        rememberLauncherForActivityResult(\n            ActivityResultContracts.OpenDocumentTree(),\n        ) { uri ->\n            if (uri == null) return@rememberLauncherForActivityResult\n            context.contentResolver.takePersistableUriPermission(\n                uri,\n                Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION,\n            )\n            // Saving the URI to DataStore triggers MainContent's reactive collect,\n            // which updates startDestination → VehicleList automatically.\n            scope.launch { application.preferences.setVaultUri(uri.toString()) }\n        }\n\n    Scaffold { padding ->\n        Column(\n            modifier =\n                Modifier\n                    .fillMaxSize()\n                    .padding(padding)\n                    .padding(32.dp),\n            horizontalAlignment = Alignment.CenterHorizontally,\n            verticalArrangement = Arrangement.Center,\n        ) {\n            Text(\n                text = stringResource(R.string.setup_title),\n                style = MaterialTheme.typography.headlineMedium,\n                textAlign = TextAlign.Center,\n            )\n            Spacer(Modifier.height(16.dp))\n            Text(\n                text = stringResource(R.string.setup_description),\n                style = MaterialTheme.typography.bodyLarge,\n                color = MaterialTheme.colorScheme.onSurfaceVariant,\n                textAlign = TextAlign.Center,\n            )\n            Spacer(Modifier.height(32.dp))\n            Button(onClick = { folderPicker.launch(null) }) {\n                Text(stringResource(R.string.setup_choose_folder))\n            }\n        }\n    }\n}\n"
}