Do not set WFC mode separately when not editable

WFC mode was being set separately when setting is not
editable. Moved this behavior to getWfcMode so that
only one query is made.

Bug: 77831154
Test: Manual
Change-Id: I4d2cb555522246959654b8c04bec9c9b73bdc947
diff --git a/src/java/com/android/ims/ImsManager.java b/src/java/com/android/ims/ImsManager.java
index 957c8d6..8ae97c8 100644
--- a/src/java/com/android/ims/ImsManager.java
+++ b/src/java/com/android/ims/ImsManager.java
@@ -960,17 +960,6 @@
     }
 
     /**
-     * Changes the WFC mode to its default value for Carriers with non-editable WFC settings.
-     */
-    private void updateDefaultWfcMode() {
-        if (DBG) log("updateDefaultWfcMode");
-        if (!getBooleanCarrierConfig(CarrierConfigManager.KEY_EDITABLE_WFC_MODE_BOOL)) {
-            setWfcMode(getIntCarrierConfig(
-                    CarrierConfigManager.KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT));
-        }
-    }
-
-    /**
      * Returns the user configuration of WFC preference setting
      *
      * @param roaming {@code false} for home network setting, {@code true} for roaming  setting
@@ -994,35 +983,53 @@
      * @param roaming {@code false} for home network setting, {@code true} for roaming  setting
      */
     public int getWfcMode(boolean roaming) {
-        int setting = 0;
+        int setting;
         if (!roaming) {
-            setting = SubscriptionManager.getIntegerSubscriptionProperty(
-                    getSubId(), SubscriptionManager.WFC_IMS_MODE,
-                    SUB_PROPERTY_NOT_INITIALIZED, mContext);
-
-            // SUB_PROPERTY_NOT_INITIALIZED indicates it's never set in sub db.
-            if (setting == SUB_PROPERTY_NOT_INITIALIZED) {
+            // The WFC mode is not editable, return the default setting in the CarrierConfig, not
+            // the user set value.
+            if (!getBooleanCarrierConfig(CarrierConfigManager.KEY_EDITABLE_WFC_MODE_BOOL)) {
                 setting = getIntCarrierConfig(
                         CarrierConfigManager.KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT);
+
+            } else {
+                setting = getSettingFromSubscriptionManager(SubscriptionManager.WFC_IMS_MODE,
+                        CarrierConfigManager.KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT);
             }
             if (DBG) log("getWfcMode - setting=" + setting);
         } else {
-            setting = SubscriptionManager.getIntegerSubscriptionProperty(
-                    getSubId(), SubscriptionManager.WFC_IMS_ROAMING_MODE,
-                    SUB_PROPERTY_NOT_INITIALIZED, mContext);
-
-            // SUB_PROPERTY_NOT_INITIALIZED indicates it's never set in sub db.
-            if (setting == SUB_PROPERTY_NOT_INITIALIZED) {
+            // The WFC roaming mode is not editable, return the default setting in the
+            // CarrierConfig, not the user set value.
+            if (!getBooleanCarrierConfig(CarrierConfigManager.KEY_EDITABLE_WFC_MODE_BOOL)) {
                 setting = getIntCarrierConfig(
                         CarrierConfigManager.KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT);
-            }
 
+            } else {
+                setting = getSettingFromSubscriptionManager(
+                        SubscriptionManager.WFC_IMS_ROAMING_MODE,
+                        CarrierConfigManager.KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT);
+            }
             if (DBG) log("getWfcMode (roaming) - setting=" + setting);
         }
         return setting;
     }
 
     /**
+     * Returns the SubscriptionManager setting for the subSetting string. If it is not set, default
+     * to the default CarrierConfig value for defaultConfigKey.
+     */
+    private int getSettingFromSubscriptionManager(String subSetting, String defaultConfigKey) {
+        int result;
+        result = SubscriptionManager.getIntegerSubscriptionProperty(getSubId(), subSetting,
+                SUB_PROPERTY_NOT_INITIALIZED, mContext);
+
+        // SUB_PROPERTY_NOT_INITIALIZED indicates it's never set in sub db.
+        if (result == SUB_PROPERTY_NOT_INITIALIZED) {
+            result = getIntCarrierConfig(defaultConfigKey);
+        }
+        return result;
+    }
+
+    /**
      * Change persistent WFC preference setting
      *
      * @param roaming {@code false} for home network setting, {@code true} for roaming setting
@@ -1071,26 +1078,6 @@
         return subId;
     }
 
-    private static void setWfcModeInternal(Context context, int wfcMode) {
-        final ImsManager imsManager = ImsManager.getInstance(context,
-                SubscriptionManager.getDefaultVoicePhoneId());
-        if (imsManager != null) {
-            final int value = wfcMode;
-            Thread thread = new Thread(new Runnable() {
-                public void run() {
-                    try {
-                        imsManager.getConfigInterface().setConfig(
-                                ImsConfig.ConfigConstants.VOICE_OVER_WIFI_MODE,
-                                value);
-                    } catch (ImsException e) {
-                        // do nothing
-                    }
-                }
-            });
-            thread.start();
-        }
-    }
-
     private void setWfcModeInternal(int wfcMode) {
         final int value = wfcMode;
         Thread thread = new Thread(() -> {
@@ -1386,7 +1373,6 @@
         boolean isNetworkRoaming = tm.isNetworkRoaming();
         boolean available = isWfcEnabledByPlatform();
         boolean enabled = isWfcEnabledByUser();
-        updateDefaultWfcMode();
         int mode = getWfcMode(isNetworkRoaming);
         boolean roaming = isWfcRoamingEnabledByUser();
         boolean isFeatureOn = available && enabled;
@@ -1403,7 +1389,7 @@
             mode = ImsConfig.WfcModeFeatureValueConstants.CELLULAR_PREFERRED;
             roaming = false;
         }
-        setWfcModeInternal(mContext, mode);
+        setWfcModeInternal(mode);
         setWfcRoamingSettingInternal(roaming);
 
         return isFeatureOn;