first commit

app/src/main/java/dev/adriankuta/visualizer/components/PermissionSection.kt

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+package dev.adriankuta.visualizer.components
+
+import android.Manifest
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.height
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import androidx.activity.compose.ManagedActivityResultLauncher
+
+/**
+ * Shows rationale and a button to request RECORD_AUDIO permission when not granted.
+ *
+ * @param permissionGranted Whether microphone permission is already granted.
+ * @param requestPermissionLauncher Launcher configured for ActivityResultContracts.RequestPermission().
+ * @param modifier Compose modifier for layout.
+ */
+@Composable
+fun PermissionSection(
+    permissionGranted: Boolean,
+    requestPermissionLauncher: ManagedActivityResultLauncher<String, Boolean>,
+    modifier: Modifier = Modifier,
+) {
+    if (permissionGranted) return
+    Text("This app needs microphone permission to access the audio output for visualization.", style = MaterialTheme.typography.bodyMedium)
+    Spacer(Modifier.height(8.dp))
+    Button(onClick = { requestPermissionLauncher.launch(Manifest.permission.RECORD_AUDIO) }) {
+        Text("Grant Microphone Permission")
+    }
+}