'use strict';
const { EventEmitter } = require('events');
const { powerMonitor, PowerMonitor } = process.electronBinding('power_monitor');
const { deprecate } = require('electron');
// PowerMonitor is an EventEmitter.
Object.setPrototypeOf(PowerMonitor.prototype, EventEmitter.prototype);
EventEmitter.call(powerMonitor);
// On Linux we need to call blockShutdown() to subscribe to shutdown event.
if (process.platform === 'linux') {
    powerMonitor.on('newListener', (event) => {
        if (event === 'shutdown' && powerMonitor.listenerCount('shutdown') === 0) {
            powerMonitor.blockShutdown();
        }
    });
    powerMonitor.on('removeListener', (event) => {
        if (event === 'shutdown' && powerMonitor.listenerCount('shutdown') === 0) {
            powerMonitor.unblockShutdown();
        }
    });
}
// TODO(nitsakh): Remove in 7.0
powerMonitor.querySystemIdleState = function (threshold, callback) {
    deprecate.warn('powerMonitor.querySystemIdleState', 'powerMonitor.getSystemIdleState');
    if (typeof threshold !== 'number') {
        throw new Error('Must pass threshold as a number');
    }
    if (typeof callback !== 'function') {
        throw new Error('Must pass callback as a function argument');
    }
    const idleState = this.getSystemIdleState(threshold);
    process.nextTick(() => callback(idleState));
};
// TODO(nitsakh): Remove in 7.0
powerMonitor.querySystemIdleTime = function (callback) {
    deprecate.warn('powerMonitor.querySystemIdleTime', 'powerMonitor.getSystemIdleTime');
    if (typeof callback !== 'function') {
        throw new Error('Must pass function as an argument');
    }
    const idleTime = this.getSystemIdleTime();
    process.nextTick(() => callback(idleTime));
};
module.exports = powerMonitor;