/*
 * 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.systemui.statusbar.policy

import com.android.systemui.statusbar.policy.DevicePostureController.DevicePostureInt
import com.android.systemui.utils.coroutines.flow.conflatedCallbackFlow
import kotlinx.coroutines.channels.awaitClose
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.onStart

/** [DevicePostureController.getDevicePosture] as a [Flow]. */
@DevicePostureInt
fun DevicePostureController.devicePosture(): Flow<Int> =
    conflatedCallbackFlow {
            val callback = DevicePostureController.Callback { posture -> trySend(posture) }
            addCallback(callback)
            awaitClose { removeCallback(callback) }
        }
        .onStart { emit(devicePosture) }