'use strict'; // @ts-check; // ================================================================================== // battery.js // ---------------------------------------------------------------------------------- // Description: System Information - library // for Node.js // Copyright: (c) 2014 - 2020 // Author: Sebastian Hildebrandt // ---------------------------------------------------------------------------------- // License: MIT // ================================================================================== // 6. Battery // ---------------------------------------------------------------------------------- const exec = require('child_process').exec; const fs = require('fs'); const util = require('./util'); let _platform = process.platform; const _linux = (_platform === 'linux'); const _darwin = (_platform === 'darwin'); const _windows = (_platform === 'win32'); const _freebsd = (_platform === 'freebsd'); const _openbsd = (_platform === 'openbsd'); const _netbsd = (_platform === 'netbsd'); const _sunos = (_platform === 'sunos'); module.exports = function (callback) { return new Promise((resolve) => { process.nextTick(() => { let result = { hasbattery: false, cyclecount: 0, ischarging: false, designedcapacity: 0, maxcapacity: 0, currentcapacity: 0, voltage: 0, capacityUnit: '', percent: 0, timeremaining: -1, acconnected: true, type: '', model: '', manufacturer: '', serial: '' }; if (_linux) { let battery_path = ''; if (fs.existsSync('/sys/class/power_supply/BAT1/uevent')) { battery_path = '/sys/class/power_supply/BAT1/'; } else if (fs.existsSync('/sys/class/power_supply/BAT0/uevent')) { battery_path = '/sys/class/power_supply/BAT0/'; } if (battery_path) { fs.readFile(battery_path + 'uevent', function (error, stdout) { if (!error) { let lines = stdout.toString().split('\n'); result.ischarging = (util.getValue(lines, 'POWER_SUPPLY_STATUS', '=').toLowerCase() === 'charging'); result.acconnected = result.ischarging; result.voltage = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_VOLTAGE_NOW', '='), 10) / 1000000.0; result.capacityUnit = result.voltage ? 'mWh' : 'mAh'; result.cyclecount = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_CYCLE_COUNT', '='), 10); result.maxcapacity = Math.round(parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_CHARGE_FULL', '='), 10) / 1000.0 / (result.voltage || 1)); result.designedcapacity = Math.round(parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_CHARGE_FULL_DESIGN', '='), 10) / 1000.0 / (result.voltage || 1)) | result.maxcapacity; result.currentcapacity = Math.round(parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_CHARGE_NOW', '='), 10) / 1000.0 / (result.voltage || 1)); if (!result.maxcapacity) { result.maxcapacity = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_ENERGY_FULL', '='), 10) / 1000.0; result.designcapacity = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_ENERGY_FULL_DESIGN', '='), 10) / 1000.0 | result.maxcapacity; result.currentcapacity = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_ENERGY_NOW', '='), 10) / 1000.0; } const percent = util.getValue(lines, 'POWER_SUPPLY_CAPACITY', '='); const energy = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_ENERGY_NOW', '='), 10); const power = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_POWER_NOW', '='), 10); const current = parseInt('0' + util.getValue(lines, 'POWER_SUPPLY_CURRENT_NOW', '='), 10); result.percent = parseInt('0' + percent, 10); if (result.maxcapacity && result.currentcapacity) { result.hasbattery = true; if (!percent) { result.percent = 100.0 * result.currentcapacity / result.maxcapacity; } } if (result.ischarging) { result.hasbattery = true; } if (energy && power) { result.timeremaining = Math.floor(energy / power * 60); } else if (current && result.currentcapacity) { result.timeremaining = Math.floor(result.currentcapacity / current * 60); } result.type = util.getValue(lines, 'POWER_SUPPLY_TECHNOLOGY', '='); result.model = util.getValue(lines, 'POWER_SUPPLY_MODEL_NAME', '='); result.manufacturer = util.getValue(lines, 'POWER_SUPPLY_MANUFACTURER', '='); result.serial = util.getValue(lines, 'POWER_SUPPLY_SERIAL_NUMBER', '='); if (callback) { callback(result); } resolve(result); } else { if (callback) { callback(result); } resolve(result); } }); } else { if (callback) { callback(result); } resolve(result); } } if (_freebsd || _openbsd || _netbsd) { exec('sysctl hw.acpi.battery hw.acpi.acline', function (error, stdout) { let lines = stdout.toString().split('\n'); const batteries = parseInt('0' + util.getValue(lines, 'hw.acpi.battery.units'), 10); const percent = parseInt('0' + util.getValue(lines, 'hw.acpi.battery.life'), 10); result.hasbattery = (batteries > 0); result.cyclecount = -1; result.ischarging = util.getValue(lines, 'hw.acpi.acline') !== '1'; result.acconnected = result.ischarging; result.maxcapacity = -1; result.currentcapacity = -1; result.capacityUnit = 'unknown'; result.percent = batteries ? percent : -1; if (callback) { callback(result); } resolve(result); }); } if (_darwin) { exec('ioreg -n AppleSmartBattery -r | egrep "CycleCount|IsCharging|DesignCapacity|MaxCapacity|CurrentCapacity|BatterySerialNumber|TimeRemaining|Voltage"; pmset -g batt | grep %', function (error, stdout) { if (stdout) { let lines = stdout.toString().replace(/ +/g, '').replace(/"+/g, '').replace(/-/g, '').split('\n'); result.cyclecount = parseInt('0' + util.getValue(lines, 'cyclecount', '='), 10); result.voltage = parseInt('0' + util.getValue(lines, 'voltage', '='), 10) / 1000.0; result.capacityUnit = result.voltage ? 'mWh' : 'mAh'; result.maxcapacity = Math.round(parseInt('0' + util.getValue(lines, 'maxcapacity', '='), 10) * (result.voltage || 1)); result.currentcapacity = Math.round(parseInt('0' + util.getValue(lines, 'currentcapacity', '='), 10) * (result.voltage || 1)); result.designedcapacity = Math.round(parseInt('0' + util.getValue(lines, 'DesignCapacity', '='), 10) * (result.voltage || 1)); result.manufacturer = 'Apple'; result.serial = util.getValue(lines, 'BatterySerialNumber', '='); let percent = -1; const line = util.getValue(lines, 'internal', 'Battery'); let parts = line.split(';'); if (parts && parts[0]) { let parts2 = parts[0].split('\t'); if (parts2 && parts2[1]) { percent = parseFloat(parts2[1].trim().replace(/%/g, '')); } } if (parts && parts[1]) { result.ischarging = (parts[1].trim() === 'charging'); result.acconnected = (parts[1].trim() !== 'discharging'); } else { result.ischarging = util.getValue(lines, 'ischarging', '=').toLowerCase() === 'yes'; result.acconnected = result.ischarging; } if (result.maxcapacity && result.currentcapacity) { result.hasbattery = true; result.type = 'Li-ion'; result.percent = percent !== -1 ? percent : Math.round(100.0 * result.currentcapacity / result.maxcapacity); if (!result.ischarging) { result.timeremaining = parseInt('0' + util.getValue(lines, 'TimeRemaining', '='), 10); } } } if (callback) { callback(result); } resolve(result); }); } if (_sunos) { if (callback) { callback(result); } resolve(result); } if (_windows) { try { util.wmic('Path Win32_Battery Get BatteryStatus, DesignCapacity, EstimatedChargeRemaining, DesignVoltage, FullChargeCapacity /value').then((stdout) => { if (stdout) { let lines = stdout.split('\r\n'); let status = util.getValue(lines, 'BatteryStatus', '=').trim(); // 1 = "Discharging" // 2 = "On A/C" // 3 = "Fully Charged" // 4 = "Low" // 5 = "Critical" // 6 = "Charging" // 7 = "Charging High" // 8 = "Charging Low" // 9 = "Charging Critical" // 10 = "Undefined" // 11 = "Partially Charged" if (status && status != '10') { const statusValue = parseInt(status); result.hasbattery = true; result.maxcapacity = parseInt(util.getValue(lines, 'DesignCapacity', '=') || 0); result.designcapacity = parseInt(util.getValue(lines, 'DesignCapacity', '=') || 0); result.voltage = parseInt(util.getValue(lines, 'DesignVoltage', '=') || 0) / 1000.0; result.capacityUnit = 'mWh'; result.percent = parseInt(util.getValue(lines, 'EstimatedChargeRemaining', '=') || 0); result.currentcapacity = parseInt(result.maxcapacity * result.percent / 100); result.ischarging = (statusValue >= 6 && statusValue <= 9) || statusValue === 11 || (!(statusValue === 3) && !(statusValue === 1) && result.percent < 100); result.acconnected = result.ischarging || statusValue === 2; } } if (callback) { callback(result); } resolve(result); }); } catch (e) { if (callback) { callback(result); } resolve(result); } } }); }); };