feat: show installed app in version selector

app/src/main/java/app/revanced/manager/ui/screen/VersionSelectorScreen.kt

@@ -1,7 +1,6 @@
 package app.revanced.manager.ui.screen
 
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -9,18 +8,23 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.outlined.HelpOutline
-import androidx.compose.material.icons.outlined.Search
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExtendedFloatingActionButton
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.ListItem
+import androidx.compose.material3.RadioButton
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.pluralStringResource
@@ -29,6 +33,7 @@ import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import app.revanced.manager.R
 import app.revanced.manager.ui.component.AppTopBar
+import app.revanced.manager.ui.component.GroupHeader
 import app.revanced.manager.ui.component.LoadingIndicator
 import app.revanced.manager.ui.model.SelectedApp
 import app.revanced.manager.ui.viewmodel.VersionSelectorViewModel
@@ -56,6 +61,8 @@ fun VersionSelectorScreen(
         }
     }
 
+    var selectedVersion: SelectedApp? by rememberSaveable { mutableStateOf(null) }
+
     Scaffold(
         topBar = {
             AppTopBar(
@@ -65,75 +72,95 @@ fun VersionSelectorScreen(
                     IconButton(onClick = { }) {
                         Icon(Icons.Outlined.HelpOutline, stringResource(R.string.help))
                     }
-                    IconButton(onClick = { }) {
-                        Icon(Icons.Outlined.Search, stringResource(R.string.search))
-                    }
                 }
             )
+        },
+        floatingActionButton = {
+            ExtendedFloatingActionButton(
+                text = { Text("Select version") },
+                icon = { Icon(Icons.Default.Check, null) },
+                onClick = { selectedVersion?.let(onAppClick) }
+            )
         }
     ) { paddingValues ->
         Column(
             modifier = Modifier
                 .padding(paddingValues)
-                .fillMaxSize(),
-            verticalArrangement = Arrangement.Center,
-            horizontalAlignment = Alignment.CenterHorizontally
+                .fillMaxSize()
+                .verticalScroll(rememberScrollState())
         ) {
-            when {
-                !viewModel.isDownloading && list.isNotEmpty() -> {
-                    Column(
-                        modifier = Modifier
-                            .fillMaxSize()
-                            .verticalScroll(rememberScrollState())
-                    ) {
-                        list.forEach { selectedApp ->
-                            ListItem(
-                                modifier = Modifier.clickable { onAppClick(selectedApp) },
-                                headlineContent = { Text(selectedApp.version) },
-                                supportingContent =
-                                    if (selectedApp is SelectedApp.Local) {
-                                        { Text(stringResource(R.string.already_downloaded)) }
-                                    } else null,
-                                trailingContent = supportedVersions[selectedApp.version]?.let { {
-                                        Text(
-                                            pluralStringResource(
-                                                R.plurals.patches_count,
-                                                count = it,
-                                                it
-                                            )
-                                        )
-                                    }
-                                }
-                            )
-                        }
-                        if (viewModel.errorMessage != null) {
-                            Column(
-                                modifier = Modifier.fillMaxWidth(),
-                                horizontalAlignment = Alignment.CenterHorizontally
-                            ) {
-                                Text(stringResource(R.string.error_occurred))
-                                Text(
-                                    text = viewModel.errorMessage!!,
-                                    modifier = Modifier.padding(horizontal = 15.dp)
-                                )
-                            }
-                        } else if (viewModel.isLoading)
-                            LoadingIndicator()
-                    }
+            viewModel.installedApp?.let { packageInfo ->
+                SelectedApp.Installed(
+                    packageName = viewModel.packageName,
+                    version = packageInfo.versionName
+                ).let {
+                    SelectedAppItem(
+                        selectedApp = it,
+                        selected = selectedVersion == it,
+                        onClick = { selectedVersion = it },
+                        patchCount = supportedVersions[it.version]
+                    )
                 }
+            }
 
-                viewModel.errorMessage != null -> {
+            GroupHeader("Downloadable versions")
+
+            list.forEach {
+                SelectedAppItem(
+                    selectedApp = it,
+                    selected = selectedVersion == it,
+                    onClick = { selectedVersion = it },
+                    patchCount = supportedVersions[it.version]
+                )
+            }
+
+            if (viewModel.errorMessage != null) {
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
                     Text(stringResource(R.string.error_occurred))
                     Text(
                         text = viewModel.errorMessage!!,
                         modifier = Modifier.padding(horizontal = 15.dp)
                     )
                 }
+            } else if (viewModel.isLoading)
+                LoadingIndicator()
 
-                else -> {
-                    LoadingIndicator()
-                }
-            }
         }
     }
+}
+
+const val alreadyPatched = false
+
+@Composable
+fun SelectedAppItem(
+    selectedApp: SelectedApp,
+    selected: Boolean,
+    onClick: () -> Unit,
+    patchCount: Int?
+) {
+    ListItem(
+        leadingContent = { RadioButton(selected, null) },
+        headlineContent = { Text(selectedApp.version) },
+        supportingContent = when (selectedApp) {
+            is SelectedApp.Installed ->
+                if (alreadyPatched) {
+                    { Text("Already patched") }
+                } else {
+                    { Text("Installed") }
+                }
+
+            is SelectedApp.Local -> {
+                { Text(stringResource(R.string.already_downloaded)) }
+            }
+
+            else -> null
+        },
+        trailingContent = patchCount?.let { {
+            Text(pluralStringResource(R.plurals.patches_count, it, it))
+        } },
+        modifier = Modifier.clickable(onClick = onClick)
+    )
 }

app/src/main/java/app/revanced/manager/ui/viewmodel/VersionSelectorViewModel.kt

@@ -1,5 +1,6 @@
 package app.revanced.manager.ui.viewmodel
 
+import android.content.pm.PackageInfo
 import android.util.Log
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -11,6 +12,7 @@ import app.revanced.manager.domain.repository.SourceRepository
 import app.revanced.manager.network.downloader.APKMirror
 import app.revanced.manager.network.downloader.AppDownloader
 import app.revanced.manager.ui.model.SelectedApp
+import app.revanced.manager.util.PM
 import app.revanced.manager.util.mutableStateSetOf
 import app.revanced.manager.util.simpleMessage
 import app.revanced.manager.util.tag
@@ -20,16 +22,17 @@ import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.koin.core.component.KoinComponent
-import org.koin.core.component.get
+import org.koin.core.component.inject
 
 class VersionSelectorViewModel(
     val packageName: String
 ) : ViewModel(), KoinComponent {
-    private val downloadedAppRepository: DownloadedAppRepository = get()
-    private val sourceRepository: SourceRepository = get()
+    private val downloadedAppRepository: DownloadedAppRepository by inject()
+    private val sourceRepository: SourceRepository by inject()
+    private val pm: PM by inject()
     private val appDownloader: AppDownloader = APKMirror()
 
-    var isDownloading: Boolean by mutableStateOf(false)
+    var installedApp: PackageInfo? by mutableStateOf(null)
         private set
     var isLoading by mutableStateOf(true)
         private set
@@ -63,6 +66,10 @@ class VersionSelectorViewModel(
     }
 
     init {
+        viewModelScope.launch(Dispatchers.Main) {
+            installedApp = withContext(Dispatchers.IO) { pm.getPackageInfo(packageName) }
+        }
+
         viewModelScope.launch(Dispatchers.IO) {
             try {
                 val compatibleVersions = supportedVersions.first()

app/src/main/res/values/strings.xml

@@ -131,6 +131,7 @@
     <string name="loading">Loading…</string>
     <string name="not_installed">Not installed</string>
 
+    <string name="error_occurred">An error occurred</string>
     <string name="already_downloaded">Already downloaded</string>
 
     <string name="select_file">Select file</string>