feat: add ability to share debug logs

app/src/main/java/app/revanced/manager/ui/screen/settings/AdvancedSettingsScreen.kt

@@ -2,6 +2,8 @@ package app.revanced.manager.ui.screen.settings
 
 import android.app.ActivityManager
 import android.os.Build
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
@@ -86,6 +88,15 @@ fun AdvancedSettingsScreen(
                 }
             )
 
+            val exportDebugLogsLauncher =
+                rememberLauncherForActivityResult(ActivityResultContracts.CreateDocument("text/plain")) {
+                    it?.let(vm::exportDebugLogs)
+                }
+            SettingsListItem(
+                headlineContent = stringResource(R.string.debug_logs_export),
+                modifier = Modifier.clickable { exportDebugLogsLauncher.launch(vm.debugLogFileName) }
+            )
+
             GroupHeader(stringResource(R.string.patcher))
             BooleanItem(
                 preference = vm.prefs.useProcessRuntime,

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

@@ -1,21 +1,41 @@
 package app.revanced.manager.ui.viewmodel
 
 import android.app.Application
+import android.net.Uri
+import android.util.Log
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import app.revanced.manager.R
+import app.revanced.manager.domain.bundles.RemotePatchBundle
 import app.revanced.manager.domain.manager.PreferencesManager
 import app.revanced.manager.domain.repository.PatchBundleRepository
-import app.revanced.manager.domain.bundles.RemotePatchBundle
+import app.revanced.manager.util.tag
+import app.revanced.manager.util.toast
 import app.revanced.manager.util.uiSafe
+import com.github.pgreze.process.Redirect
+import com.github.pgreze.process.process
+import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
 
 class AdvancedSettingsViewModel(
     val prefs: PreferencesManager,
     private val app: Application,
     private val patchBundleRepository: PatchBundleRepository
 ) : ViewModel() {
+    val debugLogFileName: String
+        get() {
+            val time = DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(LocalDateTime.now())
+
+            return "revanced-manager_logcat_$time"
+        }
+
     fun setApiUrl(value: String) = viewModelScope.launch(Dispatchers.Default) {
         if (value == prefs.api.get()) return@launch
 
@@ -32,4 +52,31 @@ class AdvancedSettingsViewModel(
     fun resetBundles() = viewModelScope.launch {
         patchBundleRepository.reset()
     }
+
+    fun exportDebugLogs(target: Uri) = viewModelScope.launch {
+        val exitCode = try {
+            withContext(Dispatchers.IO) {
+                app.contentResolver.openOutputStream(target)!!.bufferedWriter().use { writer ->
+                    val consumer = Redirect.Consume { flow ->
+                        flow.onEach {
+                            writer.write(it)
+                        }.flowOn(Dispatchers.IO).collect()
+                    }
+
+                    process("logcat", "-d", stdout = consumer).resultCode
+                }
+            }
+        } catch (e: CancellationException) {
+            throw e
+        } catch (e: Exception) {
+            Log.e(tag, "Got exception while exporting logs", e)
+            app.toast(app.getString(R.string.debug_logs_export_failed))
+            return@launch
+        }
+
+        if (exitCode == 0)
+            app.toast(app.getString(R.string.debug_logs_export_success))
+        else
+            app.toast(app.getString(R.string.debug_logs_export_read_failed, exitCode))
+    }
 }

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

@@ -137,6 +137,10 @@
     <string name="process_runtime_description">This is faster and allows Patcher to use more memory.</string>
     <string name="process_runtime_memory_limit">Patcher process memory limit</string>
     <string name="process_runtime_memory_limit_description">The max amount of memory that the Patcher process can use (in megabytes)</string>
+    <string name="debug_logs_export">Export debug logs</string>
+    <string name="debug_logs_export_read_failed">Failed to read logs (exit code %d)</string>
+    <string name="debug_logs_export_failed">Failed to export logs</string>
+    <string name="debug_logs_export_success">Exported logs</string>
     <string name="api_url">API URL</string>
     <string name="api_url_dialog_title">Set custom API URL</string>
     <string name="api_url_dialog_description">You may have issues with features when using a custom API URL.</string>