[Catalyst] Migrate "Use Wi-Fi calling"

Bug: 372732219
Flag: com.android.settings.flags.catalyst_wifi_calling
Test: devtool
Change-Id: I3183b1234b4129aa0cf0e5bc5324596a08f21195

src/com/android/settings/wifi/calling/WifiCallingMainSwitchPreference.kt

@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.wifi.calling
+
+import android.content.Context
+import android.telephony.SubscriptionManager
+import android.telephony.TelephonyManager
+import android.telephony.ims.ImsMmTelManager
+import android.util.Log
+import com.android.settings.R
+import com.android.settings.network.ims.WifiCallingQueryImsState
+import com.android.settings.network.telephony.wificalling.WifiCallingRepository
+import com.android.settings.widget.SettingsMainSwitchPreference
+import com.android.settings.wifi.calling.WifiCallingSettingsForSub.getCarrierActivityIntent
+import com.android.settingslib.datastore.KeyValueStore
+import com.android.settingslib.datastore.NoOpKeyedObservable
+import com.android.settingslib.metadata.PreferenceAvailabilityProvider
+import com.android.settingslib.metadata.ReadWritePermit
+import com.android.settingslib.metadata.SensitivityLevel
+import com.android.settingslib.metadata.TwoStatePreference
+import com.android.settingslib.preference.TwoStatePreferenceBinding
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+
+/**
+ * Metadata of the "Use Wi-Fi calling" preference.
+ *
+ * TODO(b/372732219): apply metadata to UI
+ */
+class WifiCallingMainSwitchPreference(private val subId: Int) :
+    TwoStatePreference, TwoStatePreferenceBinding, PreferenceAvailabilityProvider {
+
+    override val key: String
+        get() = KEY
+
+    override val title: Int
+        get() = R.string.wifi_calling_main_switch_title
+
+    override fun isEnabled(context: Context) =
+        context.isCallStateIdle(subId) &&
+            WifiCallingQueryImsState(context, subId).isAllowUserControl
+
+    override fun isAvailable(context: Context) =
+        SubscriptionManager.isValidSubscriptionId(subId) &&
+            runBlocking { WifiCallingRepository(context, subId).wifiCallingReadyFlow().first() }
+
+    override fun createWidget(context: Context) = SettingsMainSwitchPreference(context)
+
+    override fun getReadPermit(context: Context, myUid: Int, callingUid: Int) =
+        ReadWritePermit.ALLOW
+
+    override fun getWritePermit(context: Context, value: Boolean?, myUid: Int, callingUid: Int) =
+        when {
+            value == true &&
+                (DisclaimerItemFactory.create(context, subId).isNotEmpty() ||
+                    getCarrierActivityIntent(context, subId) != null) ->
+                ReadWritePermit.REQUIRE_USER_AGREEMENT
+            else -> ReadWritePermit.ALLOW
+        }
+
+    override val sensitivityLevel
+        get() = SensitivityLevel.NO_SENSITIVITY
+
+    override fun storage(context: Context): KeyValueStore = WifiCallingStore(context, subId)
+
+    @Suppress("UNCHECKED_CAST")
+    private class WifiCallingStore(context: Context, private val subId: Int) :
+        NoOpKeyedObservable<String>(), KeyValueStore {
+        private val queryIms = WifiCallingQueryImsState(context, subId)
+
+        override fun contains(key: String) = key == KEY
+
+        override fun <T : Any> getValue(key: String, valueType: Class<T>) =
+            (queryIms.isEnabledByUser && queryIms.isAllowUserControl) as T
+
+        override fun <T : Any> setValue(key: String, valueType: Class<T>, value: T?) {
+            if (value is Boolean) {
+                try {
+                    ImsMmTelManager.createForSubscriptionId(subId).isVoWiFiSettingEnabled = value
+                } catch (e: Exception) {
+                    Log.w(TAG, "fail to enable wifi calling", e)
+                }
+            }
+        }
+    }
+
+    companion object {
+        // TODO(b/372732219): The key is different from XML to avoid applying metadata to UI.
+        const val KEY = "wifi_calling_switch"
+        const val TAG = KEY
+
+        private fun Context.isCallStateIdle(subId: Int) =
+            getSystemService(TelephonyManager::class.java)?.getCallState(subId) ==
+                TelephonyManager.CALL_STATE_IDLE
+    }
+}

src/com/android/settings/wifi/calling/WifiCallingScreen.kt

@@ -16,6 +16,7 @@
 package com.android.settings.wifi.calling
 
 import android.content.Context
+import android.telephony.SubscriptionManager
 import com.android.settings.R
 import com.android.settings.flags.Flags
 import com.android.settingslib.metadata.ProvidePreferenceScreen
@@ -39,7 +40,13 @@ class WifiCallingScreen : PreferenceScreenCreator {
 
     override fun hasCompleteHierarchy() = false
 
-    override fun getPreferenceHierarchy(context: Context) = preferenceHierarchy(this) {}
+    override fun getPreferenceHierarchy(context: Context) =
+        preferenceHierarchy(this) {
+            val subId = SubscriptionManager.getDefaultSubscriptionId()
+            if (SubscriptionManager.isValidSubscriptionId(subId)) {
+                +WifiCallingMainSwitchPreference(subId)
+            }
+        }
 
     companion object {
         const val KEY = "wifi_calling"

src/com/android/settings/wifi/calling/WifiCallingSettingsForSub.java

@@ -486,17 +486,21 @@ public class WifiCallingSettingsForSub extends DashboardFragment
                 .launch();
     }
 
+    private @Nullable Intent getCarrierActivityIntent() {
+        return getCarrierActivityIntent(getActivity(), mSubId);
+    }
+
     /*
      * Get the Intent to launch carrier emergency address management activity.
      * Return null when no activity found.
      */
-    private Intent getCarrierActivityIntent() {
+    static @Nullable Intent getCarrierActivityIntent(Context context, int subId) {
         // Retrieve component name from carrier config
         final CarrierConfigManager configManager =
-                getActivity().getSystemService(CarrierConfigManager.class);
+                context.getSystemService(CarrierConfigManager.class);
         if (configManager == null) return null;
 
-        final PersistableBundle bundle = configManager.getConfigForSubId(mSubId);
+        final PersistableBundle bundle = configManager.getConfigForSubId(subId);
         if (bundle == null) return null;
 
         final String carrierApp = bundle.getString(
@@ -509,7 +513,7 @@ public class WifiCallingSettingsForSub extends DashboardFragment
         // Build and return intent
         final Intent intent = new Intent();
         intent.setComponent(componentName);
-        intent.putExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX, mSubId);
+        intent.putExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX, subId);
         return intent;
     }