ServiceBackedPassiveMonitoringClient.kt

/*
 * Copyright (C) 2021 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 androidx.health.services.client.impl

import android.content.ComponentName
import android.content.Context
import androidx.core.content.ContextCompat
import androidx.health.services.client.PassiveMonitoringCallback
import androidx.health.services.client.PassiveMonitoringClient
import androidx.health.services.client.data.PassiveGoal
import androidx.health.services.client.data.PassiveMonitoringCapabilities
import androidx.health.services.client.data.PassiveMonitoringConfig
import androidx.health.services.client.impl.IpcConstants.PASSIVE_API_BIND_ACTION
import androidx.health.services.client.impl.IpcConstants.SERVICE_PACKAGE_NAME
import androidx.health.services.client.impl.internal.HsConnectionManager
import androidx.health.services.client.impl.internal.StatusCallback
import androidx.health.services.client.impl.ipc.Client
import androidx.health.services.client.impl.ipc.ClientConfiguration
import androidx.health.services.client.impl.request.BackgroundRegistrationRequest
import androidx.health.services.client.impl.request.CapabilitiesRequest
import androidx.health.services.client.impl.request.FlushRequest
import androidx.health.services.client.impl.request.PassiveGoalRequest
import com.google.common.util.concurrent.Futures
import com.google.common.util.concurrent.ListenableFuture

/**
 * [PassiveMonitoringClient] implementation that is backed by Health Services.
 *
 * @hide
 */
internal class ServiceBackedPassiveMonitoringClient(private val applicationContext: Context) :
    PassiveMonitoringClient,
    Client<IPassiveMonitoringApiService>(
        CLIENT_CONFIGURATION,
        HsConnectionManager.getInstance(applicationContext),
        { binder -> IPassiveMonitoringApiService.Stub.asInterface(binder) },
        { service -> service.apiVersion }
    ) {

    private val packageName = applicationContext.packageName

    override fun registerDataCallback(
        configuration: PassiveMonitoringConfig
    ): ListenableFuture<Void> = registerDataCallbackInternal(configuration, callback = null)

    override fun registerDataCallback(
        configuration: PassiveMonitoringConfig,
        callback: PassiveMonitoringCallback
    ): ListenableFuture<Void> = registerDataCallbackInternal(configuration, callback)

    override fun unregisterDataCallback(): ListenableFuture<Void> =
        execute { service, resultFuture ->
            service.unregisterDataCallback(packageName, StatusCallback(resultFuture))
        }

    // TODO(jlannin): Make this take in the BroadcastReceiver directly.
    override fun registerPassiveGoalCallback(
        passiveGoal: PassiveGoal,
        componentName: ComponentName,
    ): ListenableFuture<Void> {
        val request = PassiveGoalRequest(packageName, componentName.getClassName(), passiveGoal)
        return execute { service, resultFuture ->
            service.registerPassiveGoalCallback(request, StatusCallback(resultFuture))
        }
    }

    override fun unregisterPassiveGoalCallback(passiveGoal: PassiveGoal): ListenableFuture<Void> {
        val request = PassiveGoalRequest(packageName, /*unused*/ "", passiveGoal)
        return execute { service, resultFuture ->
            service.unregisterPassiveGoalCallback(request, StatusCallback(resultFuture))
        }
    }

    override fun flush(): ListenableFuture<Void> {
        val request = FlushRequest(packageName)
        return execute { service, resultFuture ->
            service.flush(request, StatusCallback(resultFuture))
        }
    }

    override val capabilities: ListenableFuture<PassiveMonitoringCapabilities>
        get() =
            Futures.transform(
                execute { service -> service.getCapabilities(CapabilitiesRequest(packageName)) },
                { response -> response?.passiveMonitoringCapabilities },
                ContextCompat.getMainExecutor(applicationContext)
            )

    private fun registerDataCallbackInternal(
        configuration: PassiveMonitoringConfig,
        callback: PassiveMonitoringCallback?
    ): ListenableFuture<Void> = execute { service, resultFuture ->
        // TODO(b/191997620): This should check the package against what was requested and return an
        // error in the event of a mismatch.
        // TODO(jlannin): Maybe we should put the BroadcastReceiver directly in the
        // PassiveMonitoringConfig?
        service.registerDataCallback(
            BackgroundRegistrationRequest(configuration),
            callback?.let { PassiveMonitoringCallbackStub(it) },
            StatusCallback(resultFuture)
        )
    }

    private companion object {
        private const val CLIENT = "HealthServicesPassiveMonitoringClient"
        private val CLIENT_CONFIGURATION =
            ClientConfiguration(CLIENT, SERVICE_PACKAGE_NAME, PASSIVE_API_BIND_ACTION)
    }
}