/*
 * Copyright (C) 2023 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.flags

import com.android.systemui.statusbar.policy.BatteryController
import javax.inject.Inject

/** Returns true when the device is plugged in. */
class PluggedInCondition
@Inject
constructor(
    private val batteryController: BatteryController,
) : ConditionalRestarter.Condition {

    var listenersAdded = false
    var retryFn: (() -> Unit)? = null

    val batteryCallback =
        object : BatteryController.BatteryStateChangeCallback {
            override fun onBatteryLevelChanged(level: Int, pluggedIn: Boolean, charging: Boolean) {
                retryFn?.invoke()
            }
        }

    override fun canRestartNow(retryFn: () -> Unit): Boolean {
        if (!listenersAdded) {
            listenersAdded = true
            batteryController.addCallback(batteryCallback)
        }

        this.retryFn = retryFn

        return batteryController.isPluggedIn
    }
}