From 846cf66fa1c91c2e813289a5e4d38353df3f9376 Mon Sep 17 00:00:00 2001
From: Adam Brown <adampsbrown@gmail.com>
Date: Wed, 28 Sep 2022 17:58:48 +0100
Subject: [PATCH] adding runtime permission granter

---
 .../kotlin/app/dapk/st/core/DapkActivity.kt   | 33 ++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/domains/android/compose-core/src/main/kotlin/app/dapk/st/core/DapkActivity.kt b/domains/android/compose-core/src/main/kotlin/app/dapk/st/core/DapkActivity.kt
index 29ee41b..d297ca6 100644
--- a/domains/android/compose-core/src/main/kotlin/app/dapk/st/core/DapkActivity.kt
+++ b/domains/android/compose-core/src/main/kotlin/app/dapk/st/core/DapkActivity.kt
@@ -1,15 +1,19 @@
 package app.dapk.st.core
 
+import android.content.pm.PackageManager
 import android.os.Build
 import android.os.Bundle
 import android.view.WindowManager
 import androidx.activity.ComponentActivity
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.SideEffect
 import app.dapk.st.core.extensions.unsafeLazy
 import app.dapk.st.design.components.SmallTalkTheme
 import app.dapk.st.design.components.ThemeConfig
 import app.dapk.st.navigator.navigator
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlin.coroutines.resume
 import androidx.activity.compose.setContent as _setContent
 
 abstract class DapkActivity : ComponentActivity(), EffectScope {
@@ -27,7 +31,6 @@ abstract class DapkActivity : ComponentActivity(), EffectScope {
         super.onCreate(savedInstanceState)
         this.themeConfig = ThemeConfig(themeStore.isMaterialYouEnabled())
 
-
         window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
         window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
     }
@@ -64,4 +67,32 @@ abstract class DapkActivity : ComponentActivity(), EffectScope {
         } else
             super.onBackPressed()
     }
+
+    protected suspend fun ensurePermission(permission: String): PermissionResult {
+        return when {
+            checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED -> PermissionResult.Granted
+
+            shouldShowRequestPermissionRationale(permission) -> PermissionResult.ShowRational
+
+            else -> {
+                val isGranted = suspendCancellableCoroutine { continuation ->
+                    val callback: (result: Boolean) -> Unit = { result -> continuation.resume(result) }
+                    val launcher = registerForActivityResult(ActivityResultContracts.RequestPermission(), callback)
+                    launcher.launch(permission)
+                    continuation.invokeOnCancellation { launcher.unregister() }
+                }
+
+                when (isGranted) {
+                    true -> PermissionResult.Granted
+                    false -> PermissionResult.Denied
+                }
+            }
+        }
+    }
+}
+
+sealed interface PermissionResult {
+    object Granted : PermissionResult
+    object ShowRational : PermissionResult
+    object Denied : PermissionResult
 }