compose: details: Setup permissions screen

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/java/com/aurora/store/compose/navigation/Screen.kt

@@ -60,4 +60,10 @@ sealed class Screen(
      */
     @Serializable
     data object DetailsReview : Screen()
+
+    /**
+     * Child screen of [AppDetails]; Avoid navigating to this screen directly.
+     */
+    @Serializable
+    data object DetailsPermission : Screen()
 }

app/src/main/java/com/aurora/store/compose/ui/details/AppDetailsScreen.kt

@@ -291,6 +291,7 @@ private fun ScreenContentApp(
                     onNavigateToDetailsScreenshot = { showExtraPane(Screen.DetailsScreenshot(it)) },
                     onNavigateToDetailsReview = { showExtraPane(Screen.DetailsReview) },
                     onNavigateToDetailsExodus = { showExtraPane(Screen.DetailsExodus) },
+                    onNavigateToDetailsPermission = { showExtraPane(Screen.DetailsPermission) },
                     onDownload = onDownload,
                     onManualDownload = onManualDownload,
                     onCancelDownload = onCancelDownload,
@@ -320,7 +321,9 @@ private fun ScreenContentApp(
                             onNavigateUp = ::showMainPane,
                             onNavigateToAppDetails = onNavigateToAppDetails
                         )
-
+                        is Screen.DetailsPermission -> DetailsPermissionScreen(
+                            onNavigateUp = ::showMainPane
+                        )
                         is Screen.DetailsScreenshot -> DetailsScreenshotScreen(
                             index = screen.index,
                             onNavigateUp = ::showMainPane
@@ -359,6 +362,7 @@ private fun ScreenContentAppMainPane(
     onNavigateToDetailsScreenshot: (index: Int) -> Unit,
     onNavigateToDetailsReview: () -> Unit,
     onNavigateToDetailsExodus: () -> Unit,
+    onNavigateToDetailsPermission: () -> Unit,
     onDownload: () -> Unit,
     onManualDownload: () -> Unit,
     onCancelDownload: () -> Unit,
@@ -480,7 +484,12 @@ private fun ScreenContentAppMainPane(
 
             HeaderComposable(
                 title = stringResource(R.string.details_permission),
-                subtitle = stringResource(R.string.permissions, app.permissions.size)
+                subtitle = if (app.permissions.isNotEmpty()) {
+                    stringResource(R.string.permissions, app.permissions.size)
+                } else {
+                    stringResource(R.string.details_no_permission)
+                },
+                onClick = if (app.permissions.isNotEmpty()) onNavigateToDetailsPermission else null
             )
 
             if (dataSafetyReport != null) AppDataSafety(report = dataSafetyReport)

app/src/main/java/com/aurora/store/compose/ui/details/DetailsPermissionScreen.kt

@@ -0,0 +1,104 @@
+/*
+ * SPDX-FileCopyrightText: 2025 The Calyx Institute
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.aurora.store.compose.ui.details
+
+import android.content.pm.PermissionInfo
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.adaptive.WindowAdaptiveInfo
+import androidx.compose.material3.adaptive.currentWindowAdaptiveInfo
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.dimensionResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.tooling.preview.PreviewParameter
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.window.core.layout.WindowWidthSizeClass
+import com.aurora.extensions.adaptiveNavigationIcon
+import com.aurora.gplayapi.data.models.App
+import com.aurora.store.R
+import com.aurora.store.compose.composables.TopAppBarComposable
+import com.aurora.store.compose.composables.preview.AppPreviewProvider
+import com.aurora.store.viewmodel.details.AppDetailsViewModel
+import com.aurora.store.viewmodel.details.DetailsPermissionViewModel
+
+@Composable
+fun DetailsPermissionScreen(
+    onNavigateUp: () -> Unit,
+    appDetailsViewModel: AppDetailsViewModel = hiltViewModel(),
+    detailsPermissionViewModel: DetailsPermissionViewModel = hiltViewModel { factory: DetailsPermissionViewModel.Factory ->
+        factory.create(appDetailsViewModel.app.value!!.permissions)
+    },
+    windowAdaptiveInfo: WindowAdaptiveInfo = currentWindowAdaptiveInfo()
+) {
+    val app by appDetailsViewModel.app.collectAsStateWithLifecycle()
+    val permissionsInfo by detailsPermissionViewModel.permissionsInfo.collectAsStateWithLifecycle()
+
+    val topAppBarTitle = when (windowAdaptiveInfo.windowSizeClass.windowWidthSizeClass) {
+        WindowWidthSizeClass.COMPACT -> app!!.displayName
+        else -> stringResource(R.string.details_permission)
+    }
+
+    ScreenContent(
+        topAppBarTitle = topAppBarTitle,
+        onNavigateUp = onNavigateUp,
+        permissionsInfo = permissionsInfo
+    )
+}
+
+@Composable
+private fun ScreenContent(
+    topAppBarTitle: String? = null,
+    permissionsInfo: Map<String, PermissionInfo?> = emptyMap(),
+    onNavigateUp: () -> Unit = {},
+    windowAdaptiveInfo: WindowAdaptiveInfo = currentWindowAdaptiveInfo()
+) {
+    val packageManager = LocalContext.current.packageManager
+
+    Scaffold(
+        topBar = {
+            TopAppBarComposable(
+                title = topAppBarTitle,
+                navigationIcon = windowAdaptiveInfo.adaptiveNavigationIcon,
+                onNavigateUp = onNavigateUp
+            )
+        }
+    ) { paddingValues ->
+        LazyColumn(
+            modifier = Modifier
+                .padding(paddingValues)
+                .fillMaxSize()
+                .padding(horizontal = dimensionResource(R.dimen.padding_medium))
+        ) {
+            items(items = permissionsInfo.keys.toList(), key = { it }) { permission ->
+                // Bail out if this is not a known permission for the OS
+                val permissionInfo = permissionsInfo.getValue(permission) ?: return@items
+
+                Text(
+                    text = permissionInfo.loadLabel(packageManager).toString(),
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+        }
+    }
+}
+
+@Preview
+@Composable
+private fun DetailsPermissionScreenPreview(@PreviewParameter(AppPreviewProvider::class) app: App) {
+    ScreenContent(
+        topAppBarTitle = app.displayName
+    )
+}

app/src/main/java/com/aurora/store/viewmodel/details/DetailsExodusViewModel.kt

@@ -37,7 +37,7 @@ class DetailsExodusViewModel @AssistedInject constructor(
         getExodusTrackersFromReport()
     }
 
-    fun getExodusTrackersFromReport() {
+    private fun getExodusTrackersFromReport() {
         viewModelScope.launch(Dispatchers.IO) {
             val trackerObjects = exodusReport.trackers.map {
                 exodusTrackers.getJSONObject(it.toString())

app/src/main/java/com/aurora/store/viewmodel/details/DetailsPermissionViewModel.kt

@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: 2025 The Calyx Institute
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.aurora.store.viewmodel.details
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.content.pm.PermissionInfo
+import androidx.lifecycle.ViewModel
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+
+@HiltViewModel(assistedFactory = DetailsPermissionViewModel.Factory::class)
+class DetailsPermissionViewModel @AssistedInject constructor(
+    @Assisted private val permissions: List<String>,
+    @ApplicationContext private val context: Context
+): ViewModel() {
+
+    @AssistedFactory
+    interface Factory {
+        fun create(permissions: List<String>): DetailsPermissionViewModel
+    }
+
+    private val _permissionsInfo = MutableStateFlow<Map<String, PermissionInfo?>>(emptyMap())
+    val permissionsInfo = _permissionsInfo.asStateFlow()
+
+    init {
+        fetchPermissions()
+    }
+
+    private fun fetchPermissions() {
+        _permissionsInfo.value = permissions.associateWith { getPermissionInfo(it) }
+    }
+
+    private fun getPermissionInfo(permissionName: String): PermissionInfo? {
+        return try {
+            context.packageManager.getPermissionInfo(permissionName, 0)
+        } catch (_: PackageManager.NameNotFoundException) {
+            null
+        }
+    }
+}