[Refactor] Make notification permission optional

Although denying notification permission will render many features useless, it
is made optional for those who insists on denying it. However, the permission
shall still be asked everytime the app is launched until it times out.

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

app/src/main/java/io/github/muntashirakon/AppManager/BaseActivity.java

@@ -24,6 +24,8 @@
 import androidx.lifecycle.ViewModelProvider;
 
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
 
 import io.github.muntashirakon.AppManager.crypto.ks.KeyStoreActivity;
 import io.github.muntashirakon.AppManager.crypto.ks.KeyStoreManager;
@@ -39,16 +41,12 @@
 public abstract class BaseActivity extends AppCompatActivity {
     public static final String TAG = BaseActivity.class.getSimpleName();
 
-    private static final String[] REQUIRED_PERMISSIONS;
-
-    static {
-        REQUIRED_PERMISSIONS = new ArrayList<String>() {{
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-                add(Manifest.permission.POST_NOTIFICATIONS);
-            }
-        }}.toArray(new String[0]);
-
-    }
+    private static final HashMap<String, Boolean> ASKED_PERMISSIONS = new HashMap<String, Boolean>() {{
+        // (permission, required) pairs
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            put(Manifest.permission.POST_NOTIFICATIONS, false);
+        }
+    }};
 
     @Nullable
     private AlertDialog mAlertDialog;
@@ -77,7 +75,7 @@ public abstract class BaseActivity extends AppCompatActivity {
                 if (permissionStatusMap == null) {
                     return;
                 }
-                initPermissionChecks();
+                initPermissionChecks(false);
             });
 
     @Override
@@ -87,7 +85,7 @@ protected final void onCreate(@Nullable Bundle savedInstanceState) {
         if (Ops.isAuthenticated()) {
             Log.d(TAG, "Already authenticated.");
             onAuthenticated(savedInstanceState);
-            initPermissionChecks();
+            initPermissionChecks(false);
             return;
         }
         if (Boolean.TRUE.equals(BuildExpiryChecker.buildExpired())) {
@@ -136,7 +134,7 @@ protected final void onCreate(@Nullable Bundle savedInstanceState) {
                     if (mAlertDialog != null) mAlertDialog.dismiss();
                     Ops.setAuthenticated(this, true);
                     onAuthenticated(savedInstanceState);
-                    initPermissionChecks();
+                    initPermissionChecks(true);
                     InternalCacheCleanerService.scheduleAlarm(getApplicationContext());
             }
         });
@@ -243,12 +241,17 @@ private void handleMigrationAndModeOfOp() {
         }
     }
 
-    private void initPermissionChecks() {
-        for (String permission : REQUIRED_PERMISSIONS) {
-            if (!SelfPermissions.checkSelfPermission(permission)) {
-                mPermissionCheckActivity.launch(REQUIRED_PERMISSIONS);
-                return;
+    private void initPermissionChecks(boolean checkAll) {
+        List<String> permissionsToBeAsked = new ArrayList<>(ASKED_PERMISSIONS.size());
+        for (String permission : ASKED_PERMISSIONS.keySet()) {
+            boolean required = Boolean.TRUE.equals(ASKED_PERMISSIONS.get(permission));
+            if (!SelfPermissions.checkSelfPermission(permission) && (required || checkAll)) {
+                permissionsToBeAsked.add(permission);
             }
         }
+        if (!permissionsToBeAsked.isEmpty()) {
+            // Ask required permissions
+            mPermissionCheckActivity.launch(permissionsToBeAsked.toArray(new String[0]));
+        }
     }
 }