Create ImsFeatureRepository

To be shared with video calling and VoLTE features.

Bug: 233327342
Flag: EXEMPT bug fix
Test: manual - on Mobile Settings
Test: atest ImsFeatureRepositoryTest
Change-Id: Ic7bcb532c4bd32c6f7ac4af1eebdd8a70a86ff29

src/com/android/settings/network/telephony/ims/ImsFeatureRepository.kt

@@ -0,0 +1,61 @@
+/*
+ * 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.network.telephony.ims
+
+import android.content.Context
+import android.telephony.AccessNetworkConstants.TransportType
+import android.telephony.ims.feature.MmTelFeature.MmTelCapabilities.MmTelCapability
+import android.telephony.ims.stub.ImsRegistrationImplBase.ImsRegistrationTech
+import com.android.settings.network.telephony.subscriptionsChangedFlow
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.flatMapLatest
+
+/**
+ * A repository for the IMS feature.
+ *
+ * @throws IllegalArgumentException if the [subId] is invalid.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+class ImsFeatureRepository(
+    private val context: Context,
+    private val subId: Int,
+    private val provisioningRepository: ProvisioningRepository = ProvisioningRepository(context),
+    private val imsMmTelRepository: ImsMmTelRepository = ImsMmTelRepositoryImpl(context, subId)
+) {
+    /**
+     * A cold flow that determines the provisioning status for the specified IMS MmTel capability,
+     * and whether or not the requested MmTel capability is supported by the carrier on the
+     * specified network transport.
+     *
+     * @return true if the feature is provisioned and supported, false otherwise.
+     */
+    fun isReadyFlow(
+        @MmTelCapability capability: Int,
+        @ImsRegistrationTech tech: Int,
+        @TransportType transportType: Int,
+    ): Flow<Boolean> =
+        context.subscriptionsChangedFlow().flatMapLatest {
+            combine(
+                provisioningRepository.imsFeatureProvisionedFlow(subId, capability, tech),
+                imsMmTelRepository.isSupportedFlow(capability, transportType),
+            ) { imsFeatureProvisioned, isSupported ->
+                imsFeatureProvisioned && isSupported
+            }
+        }
+}

src/com/android/settings/network/telephony/ims/ImsMmTelRepository.kt

@@ -36,6 +36,7 @@ import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.conflate
 import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlinx.coroutines.withContext
 
@@ -47,6 +48,11 @@ interface ImsMmTelRepository {
 
     fun imsReadyFlow(): Flow<Boolean>
 
+    fun isSupportedFlow(
+        @MmTelFeature.MmTelCapabilities.MmTelCapability capability: Int,
+        @AccessNetworkConstants.TransportType transportType: Int,
+    ): Flow<Boolean>
+
     suspend fun isSupported(
         @MmTelFeature.MmTelCapabilities.MmTelCapability capability: Int,
         @AccessNetworkConstants.TransportType transportType: Int,
@@ -55,6 +61,11 @@ interface ImsMmTelRepository {
     suspend fun setCrossSimCallingEnabled(enabled: Boolean)
 }
 
+/**
+ * A repository for the IMS MMTel.
+ *
+ * @throws IllegalArgumentException if the [subId] is invalid.
+ */
 class ImsMmTelRepositoryImpl(
     context: Context,
     private val subId: Int,
@@ -126,8 +137,12 @@ class ImsMmTelRepositoryImpl(
         awaitClose { imsMmTelManager.unregisterImsStateCallback(callback) }
     }.catch { e ->
         Log.w(TAG, "[$subId] error while imsReadyFlow", e)
+        emit(false)
     }.conflate().flowOn(Dispatchers.Default)
 
+    override fun isSupportedFlow(capability: Int, transportType: Int): Flow<Boolean> =
+        imsReadyFlow().map { imsReady -> imsReady && isSupported(capability, transportType) }
+
     override suspend fun isSupported(
         @MmTelFeature.MmTelCapabilities.MmTelCapability capability: Int,
         @AccessNetworkConstants.TransportType transportType: Int,

src/com/android/settings/network/telephony/wificalling/WifiCallingRepository.kt

@@ -20,24 +20,17 @@ import android.content.Context
 import android.telephony.AccessNetworkConstants
 import android.telephony.CarrierConfigManager
 import android.telephony.CarrierConfigManager.KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL
-import android.telephony.SubscriptionManager
 import android.telephony.ims.ImsMmTelManager.WiFiCallingMode
 import android.telephony.ims.feature.MmTelFeature
 import android.telephony.ims.stub.ImsRegistrationImplBase
 import androidx.lifecycle.LifecycleOwner
+import com.android.settings.network.telephony.ims.ImsFeatureRepository
 import com.android.settings.network.telephony.ims.ImsMmTelRepository
 import com.android.settings.network.telephony.ims.ImsMmTelRepositoryImpl
-import com.android.settings.network.telephony.ims.ProvisioningRepository
-import com.android.settings.network.telephony.subscriptionsChangedFlow
 import com.android.settings.network.telephony.telephonyManager
 import com.android.settingslib.spa.framework.util.collectLatestWithLifecycle
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.combine
-import kotlinx.coroutines.flow.flatMapLatest
-import kotlinx.coroutines.flow.flowOf
-import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.withContext
 
 interface IWifiCallingRepository {
@@ -50,11 +43,11 @@ class WifiCallingRepository
 constructor(
     private val context: Context,
     private val subId: Int,
-    private val imsMmTelRepository: ImsMmTelRepository = ImsMmTelRepositoryImpl(context, subId)
+    private val imsFeatureRepository: ImsFeatureRepository = ImsFeatureRepository(context, subId),
+    private val imsMmTelRepository: ImsMmTelRepository = ImsMmTelRepositoryImpl(context, subId),
 ) : IWifiCallingRepository {
     private val telephonyManager = context.telephonyManager(subId)
 
-    private val provisioningRepository = ProvisioningRepository(context)
     private val carrierConfigManager = context.getSystemService(CarrierConfigManager::class.java)!!
 
     @WiFiCallingMode
@@ -76,28 +69,12 @@ constructor(
         wifiCallingReadyFlow().collectLatestWithLifecycle(lifecycleOwner, action = action)
     }
 
-    @OptIn(ExperimentalCoroutinesApi::class)
-    fun wifiCallingReadyFlow(): Flow<Boolean> {
-        if (!SubscriptionManager.isValidSubscriptionId(subId)) return flowOf(false)
-        return context.subscriptionsChangedFlow().flatMapLatest {
-            combine(
-                provisioningRepository.imsFeatureProvisionedFlow(
-                    subId = subId,
-                    capability = MmTelFeature.MmTelCapabilities.CAPABILITY_TYPE_VOICE,
-                    tech = ImsRegistrationImplBase.REGISTRATION_TECH_IWLAN,
-                ),
-                isWifiCallingSupportedFlow(),
-            ) { imsFeatureProvisioned, isWifiCallingSupported ->
-                imsFeatureProvisioned && isWifiCallingSupported
-            }
-        }
-    }
-
-    private fun isWifiCallingSupportedFlow(): Flow<Boolean> {
-        return imsMmTelRepository.imsReadyFlow().map { imsReady ->
-            imsReady && isWifiCallingSupported()
-        }
-    }
+    fun wifiCallingReadyFlow(): Flow<Boolean> =
+        imsFeatureRepository.isReadyFlow(
+            capability = MmTelFeature.MmTelCapabilities.CAPABILITY_TYPE_VOICE,
+            tech = ImsRegistrationImplBase.REGISTRATION_TECH_IWLAN,
+            transportType = AccessNetworkConstants.TRANSPORT_TYPE_WLAN,
+        )
 
     suspend fun isWifiCallingSupported(): Boolean = withContext(Dispatchers.Default) {
         imsMmTelRepository.isSupported(