1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.systemui.keyguard.data.repository
18 
19 import com.android.systemui.common.coroutine.ChannelExt.trySendWithFailureLogging
20 import com.android.systemui.common.coroutine.ConflatedCallbackFlow.conflatedCallbackFlow
21 import com.android.systemui.dagger.SysUISingleton
22 import com.android.systemui.keyguard.shared.model.DevicePosture
23 import com.android.systemui.statusbar.policy.DevicePostureController
24 import javax.inject.Inject
25 import kotlinx.coroutines.channels.awaitClose
26 import kotlinx.coroutines.flow.Flow
27 
28 /** Provide current device posture state. */
29 interface DevicePostureRepository {
30     /** Provides the current device posture. */
31     val currentDevicePosture: Flow<DevicePosture>
32 }
33 
34 @SysUISingleton
35 class DevicePostureRepositoryImpl
36 @Inject
37 constructor(private val postureController: DevicePostureController) : DevicePostureRepository {
38     override val currentDevicePosture: Flow<DevicePosture>
39         get() = conflatedCallbackFlow {
40             val sendPostureUpdate = { posture: Int ->
41                 val currentDevicePosture = DevicePosture.toPosture(posture)
42                 trySendWithFailureLogging(
43                     currentDevicePosture,
44                     TAG,
45                     "Error sending posture update to $currentDevicePosture"
46                 )
47             }
48             val callback = DevicePostureController.Callback { sendPostureUpdate(it) }
49             postureController.addCallback(callback)
50             sendPostureUpdate(postureController.devicePosture)
51 
52             awaitClose { postureController.removeCallback(callback) }
53         }
54 
55     companion object {
56         const val TAG = "PostureRepositoryImpl"
57     }
58 }
59