feat: Use internal directory for saving files

app/src/main/java/app/myzel394/alibi/db/AppSettings.kt

@@ -2,7 +2,6 @@ package app.myzel394.alibi.db
 
 import android.media.MediaRecorder
 import android.os.Build
-import android.util.Log
 import app.myzel394.alibi.R
 import com.arthenica.ffmpegkit.FFmpegKit
 import com.arthenica.ffmpegkit.ReturnCode
@@ -63,7 +62,7 @@ data class AppSettings(
 }
 
 @Serializable
-data class LastRecording(
+data class RecordingInformation(
     val folderPath: String,
     @Serializable(with = LocalDateTimeSerializer::class)
     val recordingStart: LocalDateTime,
@@ -72,91 +71,8 @@ data class LastRecording(
     val fileExtension: String,
     val forceExactMaxDuration: Boolean,
 ) {
-    val fileFolder: File
+    val hasRecordingsAvailable
-        get() = File(folderPath)
+        get() = File(folderPath).listFiles()?.isNotEmpty() ?: false
-
-    val filePaths: List<File>
-        get() =
-            File(folderPath).listFiles()?.filter {
-                val name = it.nameWithoutExtension
-
-                name.toIntOrNull() != null
-            }?.toList() ?: emptyList()
-
-    val hasRecordingAvailable: Boolean
-        get() = filePaths.isNotEmpty()
-
-    private fun stripConcatenatedFileToExactDuration(
-        outputFile: File
-    ) {
-        // Move the concatenated file to a temporary file
-        val rawFile = File("$folderPath/${outputFile.nameWithoutExtension}-raw.${fileExtension}")
-        outputFile.renameTo(rawFile)
-
-        val command = "-sseof ${maxDuration / -1000} -i $rawFile -y $outputFile"
-
-        val session = FFmpegKit.execute(command)
-
-        if (!ReturnCode.isSuccess(session.returnCode)) {
-            Log.d(
-                "Audio Concatenation",
-                String.format(
-                    "Command failed with state %s and rc %s.%s",
-                    session.getState(),
-                    session.getReturnCode(),
-                    session.getFailStackTrace()
-                )
-            )
-
-            throw Exception("Failed to strip concatenated audio")
-        }
-    }
-
-    suspend fun concatenateFiles(forceConcatenation: Boolean = false): File {
-        val paths = filePaths.joinToString("|")
-        val fileName = recordingStart
-            .format(ISO_DATE_TIME)
-            .toString()
-            .replace(":", "-")
-            .replace(".", "_")
-        val outputFile = File("$fileFolder/$fileName.${fileExtension}")
-
-        if (outputFile.exists() && !forceConcatenation) {
-            return outputFile
-        }
-
-        val command = "-i 'concat:$paths' -y" +
-                " -acodec copy" +
-                " -metadata title='$fileName' " +
-                " -metadata date='${recordingStart.format(ISO_DATE_TIME)}'" +
-                " -metadata batch_count='${filePaths.size}'" +
-                " -metadata batch_duration='${intervalDuration}'" +
-                " -metadata max_duration='${maxDuration}'" +
-                " $outputFile"
-
-        val session = FFmpegKit.execute(command)
-
-        if (!ReturnCode.isSuccess(session.returnCode)) {
-            Log.d(
-                "Audio Concatenation",
-                String.format(
-                    "Command failed with state %s and rc %s.%s",
-                    session.getState(),
-                    session.getReturnCode(),
-                    session.getFailStackTrace()
-                )
-            )
-
-            throw Exception("Failed to concatenate audios")
-        }
-
-        val minRequiredForPossibleInExactMaxDuration = maxDuration / intervalDuration
-        if (forceExactMaxDuration && filePaths.size > minRequiredForPossibleInExactMaxDuration) {
-            stripConcatenatedFileToExactDuration(outputFile)
-        }
-
-        return outputFile
-    }
 }
 
 @Serializable

app/src/main/java/app/myzel394/alibi/helpers/AudioRecorderExporter.kt

@@ -0,0 +1,119 @@
+package app.myzel394.alibi.helpers
+
+import android.content.Context
+import android.util.Log
+import app.myzel394.alibi.db.RecordingInformation
+import app.myzel394.alibi.ui.RECORDER_SUBFOLDER_NAME
+import com.arthenica.ffmpegkit.FFmpegKit
+import com.arthenica.ffmpegkit.ReturnCode
+import java.io.File
+import java.time.format.DateTimeFormatter
+
+data class AudioRecorderExporter(
+    val recording: RecordingInformation,
+) {
+    val filePaths: List<File>
+        get() =
+            File(recording.folderPath).listFiles()?.filter {
+                val name = it.nameWithoutExtension
+
+                name.toIntOrNull() != null
+            }?.toList() ?: emptyList()
+
+    val hasRecordingAvailable: Boolean
+        get() = filePaths.isNotEmpty()
+
+    private fun stripConcatenatedFileToExactDuration(
+        outputFile: File
+    ) {
+        // Move the concatenated file to a temporary file
+        val rawFile =
+            File("${recording.folderPath}/${outputFile.nameWithoutExtension}-raw.${recording.fileExtension}")
+        outputFile.renameTo(rawFile)
+
+        val command = "-sseof ${recording.maxDuration / -1000} -i $rawFile -y $outputFile"
+
+        val session = FFmpegKit.execute(command)
+
+        if (!ReturnCode.isSuccess(session.returnCode)) {
+            Log.d(
+                "Audio Concatenation",
+                String.format(
+                    "Command failed with state %s and rc %s.%s",
+                    session.state,
+                    session.returnCode,
+                    session.failStackTrace,
+                )
+            )
+
+            throw Exception("Failed to strip concatenated audio")
+        }
+    }
+
+    suspend fun concatenateFiles(forceConcatenation: Boolean = false): File {
+        val paths = filePaths.joinToString("|")
+        val fileName = recording.recordingStart
+            .format(DateTimeFormatter.ISO_DATE_TIME)
+            .toString()
+            .replace(":", "-")
+            .replace(".", "_")
+        val outputFile = File("${recording.folderPath}/$fileName.${recording.fileExtension}")
+
+        if (outputFile.exists() && !forceConcatenation) {
+            return outputFile
+        }
+
+        val command = "-i 'concat:$paths' -y" +
+                " -acodec copy" +
+                " -metadata title='$fileName' " +
+                " -metadata date='${recording.recordingStart.format(DateTimeFormatter.ISO_DATE_TIME)}'" +
+                " -metadata batch_count='${filePaths.size}'" +
+                " -metadata batch_duration='${recording.intervalDuration}'" +
+                " -metadata max_duration='${recording.maxDuration}'" +
+                " $outputFile"
+
+        val session = FFmpegKit.execute(command)
+
+        if (!ReturnCode.isSuccess(session.returnCode)) {
+            Log.d(
+                "Audio Concatenation",
+                String.format(
+                    "Command failed with state %s and rc %s.%s",
+                    session.state,
+                    session.returnCode,
+                    session.failStackTrace,
+                )
+            )
+
+            throw Exception("Failed to concatenate audios")
+        }
+
+        val minRequiredForPossibleInExactMaxDuration =
+            recording.maxDuration / recording.intervalDuration
+        if (recording.forceExactMaxDuration && filePaths.size > minRequiredForPossibleInExactMaxDuration) {
+            stripConcatenatedFileToExactDuration(outputFile)
+        }
+
+        return outputFile
+    }
+
+    suspend fun cleanupFiles() {
+        filePaths.forEach {
+            runCatching {
+                it.delete()
+            }
+        }
+    }
+
+    companion object {
+        fun getFolder(context: Context) = File(context.filesDir, RECORDER_SUBFOLDER_NAME)
+
+        fun clearAllRecordings(context: Context) {
+            getFolder(context).deleteRecursively()
+        }
+
+        fun hasRecordingsAvailable(context: Context) {
+            getFolder(context).listFiles()?.isNotEmpty() ?: false
+        }
+    }
+}

app/src/main/java/app/myzel394/alibi/services/AudioRecorderService.kt

@@ -5,7 +5,7 @@ import android.media.MediaRecorder.OnErrorListener
 import android.os.Build
 import java.lang.IllegalStateException
 
-class AudioRecorderService: IntervalRecorderService() {
+class AudioRecorderService : IntervalRecorderService() {
     var amplitudesAmount = 1000
 
     var recorder: MediaRecorder? = null
@@ -13,7 +13,7 @@ class AudioRecorderService: IntervalRecorderService() {
     var onError: () -> Unit = {}
 
     val filePath: String
-        get() = "$folder/$counter.${settings!!.fileExtension}"
+        get() = "${outputFolder}/$counter.${settings!!.fileExtension}"
 
     private fun createRecorder(): MediaRecorder {
         return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {

app/src/main/java/app/myzel394/alibi/services/IntervalRecorderService.kt

@@ -1,39 +1,37 @@
 package app.myzel394.alibi.services
 
-import android.content.Context
 import android.media.MediaRecorder
 import app.myzel394.alibi.dataStore
 import app.myzel394.alibi.db.AudioRecorderSettings
-import app.myzel394.alibi.db.LastRecording
+import app.myzel394.alibi.db.RecordingInformation
+import app.myzel394.alibi.helpers.AudioRecorderExporter
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
 import java.io.File
-import java.time.LocalDateTime
-import java.util.Timer
-import java.util.TimerTask
-import java.util.UUID
-import java.util.concurrent.Executor
 import java.util.concurrent.Executors
 import java.util.concurrent.ScheduledExecutorService
 import java.util.concurrent.TimeUnit
 
-abstract class IntervalRecorderService: ExtraRecorderInformationService() {
+abstract class IntervalRecorderService : ExtraRecorderInformationService() {
     private var job = SupervisorJob()
     private var scope = CoroutineScope(Dispatchers.IO + job)
 
     protected var counter = 0
         private set
-    protected lateinit var folder: File
+
     var settings: Settings? = null
         protected set
 
     private lateinit var cycleTimer: ScheduledExecutorService
 
-    fun createLastRecording(): LastRecording = LastRecording(
+    protected val outputFolder: File
-        folderPath = folder.absolutePath,
+        get() = AudioRecorderExporter.getFolder(this)
+
+    fun createLastRecording(): RecordingInformation = RecordingInformation(
+        folderPath = outputFolder.absolutePath,
         recordingStart = recordingStart,
         maxDuration = settings!!.maxDuration,
         fileExtension = settings!!.fileExtension,
@@ -60,18 +58,10 @@ abstract class IntervalRecorderService: ExtraRecorderInformationService() {
         }
     }
 
-    private fun getRandomFileFolder(): String {
-        // uuid
-        val folder = UUID.randomUUID().toString()
-
-        return "${externalCacheDir!!.absolutePath}/$folder"
-    }
-
     override fun start() {
         super.start()
 
-        folder = File(getRandomFileFolder())
+        outputFolder.mkdirs()
-        folder.mkdirs()
 
         scope.launch {
             dataStore.data.collectLatest { preferenceSettings ->
@@ -104,7 +94,7 @@ abstract class IntervalRecorderService: ExtraRecorderInformationService() {
         val timeMultiplier = settings!!.maxDuration / settings!!.intervalDuration
         val earliestCounter = counter - timeMultiplier
 
-        folder.listFiles()?.forEach { file ->
+        outputFolder.listFiles()?.forEach { file ->
             val fileCounter = file.nameWithoutExtension.toIntOrNull() ?: return
 
             if (fileCounter < earliestCounter) {
@@ -123,7 +113,7 @@ abstract class IntervalRecorderService: ExtraRecorderInformationService() {
         val encoder: Int,
     ) {
         val fileExtension: String
-            get() = when(outputFormat) {
+            get() = when (outputFormat) {
                 MediaRecorder.OutputFormat.AAC_ADTS -> "aac"
                 MediaRecorder.OutputFormat.THREE_GPP -> "3gp"
                 MediaRecorder.OutputFormat.MPEG_4 -> "mp4"

app/src/main/java/app/myzel394/alibi/ui/Constants.kt

@@ -2,10 +2,12 @@ package app.myzel394.alibi.ui
 
 import android.os.Build
 import androidx.compose.ui.unit.dp
+import java.io.File
 
 val BIG_PRIMARY_BUTTON_SIZE = 64.dp
 val MAX_AMPLITUDE = 20000
 val SUPPORTS_DARK_MODE_NATIVELY = Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q
+val RECORDER_SUBFOLDER_NAME = ".recordings"
 
 // You are not allowed to change the constants below.
 // If you do so, you will be blocked on GitHub.

app/src/main/java/app/myzel394/alibi/ui/Navigation.kt

@@ -1,6 +1,5 @@
 package app.myzel394.alibi.ui
 
-import androidx.compose.animation.core.AnimationSpec
 import androidx.compose.animation.core.tween
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
@@ -13,10 +12,6 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.collectAsState
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.lifecycle.viewmodel.compose.viewModel
@@ -24,7 +19,6 @@ import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
 import app.myzel394.alibi.dataStore
-import app.myzel394.alibi.db.LastRecording
 import app.myzel394.alibi.ui.enums.Screen
 import app.myzel394.alibi.ui.models.AudioRecorderModel
 import app.myzel394.alibi.ui.screens.AboutScreen

app/src/main/java/app/myzel394/alibi/ui/components/AudioRecorder/molecules/StartRecording.kt

@@ -42,6 +42,7 @@ import app.myzel394.alibi.NotificationHelper
 import app.myzel394.alibi.R
 import app.myzel394.alibi.dataStore
 import app.myzel394.alibi.db.AppSettings
+import app.myzel394.alibi.helpers.AudioRecorderExporter
 import app.myzel394.alibi.services.RecorderNotificationHelper
 import app.myzel394.alibi.ui.BIG_PRIMARY_BUTTON_SIZE
 import app.myzel394.alibi.ui.components.atoms.PermissionRequester
@@ -79,6 +80,9 @@ fun StartRecording(
                         it
                     )
             }
+
+            AudioRecorderExporter.clearAllRecordings(context)
+
             audioRecorder.startRecording(context)
         }
     }
@@ -144,7 +148,7 @@ fun StartRecording(
                 .fillMaxWidth(),
             textAlign = TextAlign.Center,
         )
-        if (audioRecorder.lastRecording != null && audioRecorder.lastRecording!!.hasRecordingAvailable) {
+        if (audioRecorder.lastRecording != null && audioRecorder.lastRecording!!.hasRecordingsAvailable) {
             Column(
                 modifier = Modifier.weight(1f),
                 horizontalAlignment = Alignment.CenterHorizontally,

app/src/main/java/app/myzel394/alibi/ui/models/AudioRecorderModel.kt

@@ -4,22 +4,17 @@ import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.ServiceConnection
-import android.media.MediaRecorder
 import android.os.IBinder
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.ViewModel
-import app.myzel394.alibi.dataStore
+import app.myzel394.alibi.db.RecordingInformation
-import app.myzel394.alibi.db.LastRecording
 import app.myzel394.alibi.enums.RecorderState
 import app.myzel394.alibi.services.AudioRecorderService
 import app.myzel394.alibi.services.RecorderNotificationHelper
 import app.myzel394.alibi.services.RecorderService
-import kotlinx.coroutines.flow.last
 import kotlinx.serialization.json.Json
 
 class AudioRecorderModel : ViewModel() {
@@ -44,7 +39,7 @@ class AudioRecorderModel : ViewModel() {
     var recorderService: AudioRecorderService? = null
         private set
 
-    var lastRecording: LastRecording? by mutableStateOf<LastRecording?>(null)
+    var lastRecording: RecordingInformation? by mutableStateOf<RecordingInformation?>(null)
         private set
 
     var onRecordingSave: () -> Unit = {}

app/src/main/java/app/myzel394/alibi/ui/screens/AudioRecorder.kt

@@ -28,7 +28,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
-import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import app.myzel394.alibi.ui.components.AudioRecorder.molecules.RecordingStatus
 import app.myzel394.alibi.ui.components.AudioRecorder.molecules.StartRecording
@@ -37,8 +36,7 @@ import app.myzel394.alibi.ui.utils.rememberFileSaverDialog
 import app.myzel394.alibi.R
 import app.myzel394.alibi.dataStore
 import app.myzel394.alibi.db.AppSettings
-import app.myzel394.alibi.db.LastRecording
+import app.myzel394.alibi.helpers.AudioRecorderExporter
-import app.myzel394.alibi.services.RecorderNotificationHelper
 import app.myzel394.alibi.ui.effects.rememberSettings
 import app.myzel394.alibi.ui.models.AudioRecorderModel
 import kotlinx.coroutines.delay
@@ -67,7 +65,8 @@ fun AudioRecorder(
                 delay(100)
 
                 try {
-                    val file = audioRecorder.lastRecording!!.concatenateFiles()
+                    val file =
+                        AudioRecorderExporter(audioRecorder.lastRecording!!).concatenateFiles()
 
                     saveFile(file, file.name)
                 } catch (error: Exception) {