'use strict';
// @ts-check
// ==================================================================================
// system.js
// ----------------------------------------------------------------------------------
// Description:   System Information - library
//                for Node.js
// Copyright:     (c) 2014 - 2021
// Author:        Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License:       MIT
// ==================================================================================
// 2. System (Hardware, BIOS, Base Board)
// ----------------------------------------------------------------------------------

const fs = require('fs');
const os = require('os');
const util = require('./util');
const exec = require('child_process').exec;
const execSync = require('child_process').execSync;
const execPromise = util.promisify(require('child_process').exec);

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');

function system(callback) {

  return new Promise((resolve) => {
    process.nextTick(() => {

      let result = {
        manufacturer: '',
        model: 'Computer',
        version: '',
        serial: '-',
        uuid: '-',
        sku: '-',
        virtual: false
      };

      if (_linux || _freebsd || _openbsd || _netbsd) {
        exec('export LC_ALL=C; dmidecode -t system 2>/dev/null; unset LC_ALL', function (error, stdout) {
          // if (!error) {
          let lines = stdout.toString().split('\n');
          result.manufacturer = util.getValue(lines, 'manufacturer');
          result.model = util.getValue(lines, 'product name');
          result.version = util.getValue(lines, 'version');
          result.serial = util.getValue(lines, 'serial number');
          result.uuid = util.getValue(lines, 'uuid').toLowerCase();
          result.sku = util.getValue(lines, 'sku number');
          // }
          // Non-Root values
          const cmd = `echo -n "product_name: "; cat /sys/devices/virtual/dmi/id/product_name 2>/dev/null; echo;
            echo -n "product_serial: "; cat /sys/devices/virtual/dmi/id/product_serial 2>/dev/null; echo;
            echo -n "product_uuid: "; cat /sys/devices/virtual/dmi/id/product_uuid 2>/dev/null; echo;
            echo -n "product_version: "; cat /sys/devices/virtual/dmi/id/product_version 2>/dev/null; echo;
            echo -n "sys_vendor: "; cat /sys/devices/virtual/dmi/id/sys_vendor 2>/dev/null; echo;`;
          try {
            lines = execSync(cmd).toString().split('\n');
            result.manufacturer = result.manufacturer === '' ? util.getValue(lines, 'sys_vendor') : result.manufacturer;
            result.model = result.model === '' ? util.getValue(lines, 'product_name') : result.model;
            result.version = result.version === '' ? util.getValue(lines, 'product_version') : result.version;
            result.serial = result.serial === '' ? util.getValue(lines, 'product_serial') : result.serial;
            result.uuid = result.uuid === '' ? util.getValue(lines, 'product_uuid').toLowerCase() : result.uuid;
          } catch (e) {
            util.noop();
          }
          if (!result.serial || result.serial.toLowerCase().indexOf('o.e.m.') !== -1) { result.serial = '-'; }
          if (!result.manufacturer || result.manufacturer.toLowerCase().indexOf('o.e.m.') !== -1) { result.manufacturer = ''; }
          if (!result.model || result.model.toLowerCase().indexOf('o.e.m.') !== -1) { result.model = 'Computer'; }
          if (!result.version || result.version.toLowerCase().indexOf('o.e.m.') !== -1) { result.version = ''; }
          if (!result.sku || result.sku.toLowerCase().indexOf('o.e.m.') !== -1) { result.sku = '-'; }

          // detect virtual (1)
          if (result.model.toLowerCase() === 'virtualbox' || result.model.toLowerCase() === 'kvm' || result.model.toLowerCase() === 'virtual machine' || result.model.toLowerCase() === 'bochs' || result.model.toLowerCase().startsWith('vmware') || result.model.toLowerCase().startsWith('droplet')) {
            result.virtual = true;
            switch (result.model.toLowerCase()) {
              case 'virtualbox':
                result.virtualHost = 'VirtualBox';
                break;
              case 'vmware':
                result.virtualHost = 'VMware';
                break;
              case 'kvm':
                result.virtualHost = 'KVM';
                break;
              case 'bochs':
                result.virtualHost = 'bochs';
                break;
            }
          }
          if (result.manufacturer.toLowerCase().startsWith('vmware') || result.manufacturer.toLowerCase() === 'xen') {
            result.virtual = true;
            switch (result.manufacturer.toLowerCase()) {
              case 'vmware':
                result.virtualHost = 'VMware';
                break;
              case 'xen':
                result.virtualHost = 'Xen';
                break;
            }
          }
          if (!result.virtual) {
            try {
              const disksById = execSync('ls -1 /dev/disk/by-id/ 2>/dev/null').toString();
              if (disksById.indexOf('_QEMU_') >= 0) {
                result.virtual = true;
                result.virtualHost = 'QEMU';
              }
              if (disksById.indexOf('_VBOX_') >= 0) {
                result.virtual = true;
                result.virtualHost = 'VirtualBox';
              }
            } catch (e) {
              util.noop();
            }
          }
          if (!result.virtual && util.linuxVersion().toLowerCase().indexOf('microsoft') >= 0) {
            let versionStr = util.linuxVersion().toLowerCase();
            versionStr = versionStr.split('-')[0].replace('#', '');
            const version = parseInt(versionStr, 10) || null;
            result.virtual = true;
            result.manufacturer = 'Microsoft';
            result.model = 'WSL';
            result.version = version;
          }
          if ((_freebsd || _openbsd || _netbsd) && !result.virtualHost) {
            try {
              const procInfo = execSync('dmidecode -t 4');
              const procLines = procInfo.toString().split('\n');
              const procManufacturer = util.getValue(procLines, 'manufacturer', ':', true);
              switch (procManufacturer.toLowerCase()) {
                case 'virtualbox':
                  result.virtualHost = 'VirtualBox';
                  break;
                case 'vmware':
                  result.virtualHost = 'VMware';
                  break;
                case 'kvm':
                  result.virtualHost = 'KVM';
                  break;
                case 'bochs':
                  result.virtualHost = 'bochs';
                  break;
              }
            } catch (e) {
              util.noop();
            }
          }
          // detect docker
          if (fs.existsSync('/.dockerenv') || fs.existsSync('/.dockerinit')) {
            result.model = 'Docker Container';
          }
          try {
            const stdout = execSync('dmesg 2>/dev/null | grep -iE "virtual|hypervisor" | grep -iE "vmware|qemu|kvm|xen"');
            // detect virtual machines
            let lines = stdout.toString().split('\n');
            if (lines.length > 0) {
              if (result.model === 'Computer') { result.model = 'Virtual machine'; }
              result.virtual = true;
              if (stdout.toString().toLowerCase().indexOf('vmware') && !result.virtualHost) {
                result.virtualHost = 'VMware';
              }
              if (stdout.toString().toLowerCase().indexOf('qemu') && !result.virtualHost) {
                result.virtualHost = 'QEMU';
              }
              if (stdout.toString().toLowerCase().indexOf('xen') && !result.virtualHost) {
                result.virtualHost = 'Xen';
              }
              if (stdout.toString().toLowerCase().indexOf('kvm') && !result.virtualHost) {
                result.virtualHost = 'KVM';
              }
            }
          } catch (e) {
            util.noop();
          }

          if (result.manufacturer === '' && result.model === 'Computer' && result.version === '') {
            // Check Raspberry Pi
            fs.readFile('/proc/cpuinfo', function (error, stdout) {
              if (!error) {
                let lines = stdout.toString().split('\n');
                result.model = util.getValue(lines, 'hardware', ':', true).toUpperCase();
                result.version = util.getValue(lines, 'revision', ':', true).toLowerCase();
                result.serial = util.getValue(lines, 'serial', ':', true);
                const model = util.getValue(lines, 'model:', ':', true);
                // reference values: https://elinux.org/RPi_HardwareHistory
                // https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
                if ((result.model === 'BCM2835' || result.model === 'BCM2708' || result.model === 'BCM2709' || result.model === 'BCM2710' || result.model === 'BCM2711' || result.model === 'BCM2836' || result.model === 'BCM2837') && model.toLowerCase().indexOf('raspberry') >= 0) {
                  const rPIRevision = util.decodePiCpuinfo(lines);
                  result.model = rPIRevision.model;
                  result.version = rPIRevision.revisionCode;
                  result.manufacturer = 'Raspberry Pi Foundation';
                  result.raspberry = {
                    manufacturer: rPIRevision.manufacturer,
                    processor: rPIRevision.processor,
                    type: rPIRevision.type,
                    revision: rPIRevision.revision
                  };
                }

                // if (result.model === 'BCM2835' || result.model === 'BCM2708' || result.model === 'BCM2709' || result.model === 'BCM2835' || result.model === 'BCM2837') {


                //   // Pi 4
                //   if (['d03114'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 4 Model B';
                //     result.version = result.version + ' - Rev. 1.4';
                //   }
                //   if (['b03112', 'c03112'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 4 Model B';
                //     result.version = result.version + ' - Rev. 1.2';
                //   }
                //   if (['a03111', 'b03111', 'c03111'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 4 Model B';
                //     result.version = result.version + ' - Rev. 1.1';
                //   }
                //   // Pi 3
                //   if (['a02082', 'a22082', 'a32082', 'a52082'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 3 Model B';
                //     result.version = result.version + ' - Rev. 1.2';
                //   }
                //   if (['a22083'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 3 Model B';
                //     result.version = result.version + ' - Rev. 1.3';
                //   }
                //   if (['a020d3'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 3 Model B+';
                //     result.version = result.version + ' - Rev. 1.3';
                //   }
                //   if (['9020e0'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 3 Model A+';
                //     result.version = result.version + ' - Rev. 1.3';
                //   }
                //   // Pi 2 Model B
                //   if (['a01040'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 2 Model B';
                //     result.version = result.version + ' - Rev. 1.0';
                //   }
                //   if (['a01041', 'a21041'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 2 Model B';
                //     result.version = result.version + ' - Rev. 1.1';
                //   }
                //   if (['a22042', 'a02042'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi 2 Model B';
                //     result.version = result.version + ' - Rev. 1.2';
                //   }

                //   // Compute Model
                //   if (['a02100'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi CM3+';
                //     result.version = result.version + ' - Rev 1.0';
                //   }
                //   if (['a020a0', 'a220a0'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi CM3';
                //     result.version = result.version + ' - Rev 1.0';
                //   }
                //   if (['900061'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi CM';
                //     result.version = result.version + ' - Rev 1.1';
                //   }

                //   // Pi Zero
                //   if (['900092', '920092'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Zero';
                //     result.version = result.version + ' - Rev 1.2';
                //   }
                //   if (['900093', '920093'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Zero';
                //     result.version = result.version + ' - Rev 1.3';
                //   }
                //   if (['9000c1'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Zero W';
                //     result.version = result.version + ' - Rev 1.1';
                //   }

                //   // A, B, A+ B+
                //   if (['0002', '0003'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model B';
                //     result.version = result.version + ' - Rev 1.0';
                //   }
                //   if (['0004', '0005', '0006', '000d', '000e', '000f'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model B';
                //     result.version = result.version + ' - Rev 2.0';
                //   }
                //   if (['0007', '0008', '0009'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model A';
                //     result.version = result.version + ' - Rev 2.0';
                //   }
                //   if (['0010'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model B+';
                //     result.version = result.version + ' - Rev 1.0';
                //   }
                //   if (['0012'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model A+';
                //     result.version = result.version + ' - Rev 1.0';
                //   }
                //   if (['0013', '900032'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model B+';
                //     result.version = result.version + ' - Rev 1.2';
                //   }
                //   if (['0015', '900021'].indexOf(result.version) >= 0) {
                //     result.model = result.model + ' - Pi Model A+';
                //     result.version = result.version + ' - Rev 1.1';
                //   }
                //   if (result.model.indexOf('Pi') !== -1 && result.version) {  // Pi, Pi Zero
                //     result.manufacturer = 'Raspberry Pi Foundation';
                //   }
                // }
              }
              if (callback) { callback(result); }
              resolve(result);
            });
          } else {
            if (callback) { callback(result); }
            resolve(result);
          }
        });
      }
      if (_darwin) {
        exec('ioreg -c IOPlatformExpertDevice -d 2', function (error, stdout) {
          if (!error) {
            let lines = stdout.toString().replace(/[<>"]/g, '').split('\n');
            result.manufacturer = util.getValue(lines, 'manufacturer', '=', true);
            result.model = util.getValue(lines, 'model', '=', true);
            result.version = util.getValue(lines, 'version', '=', true);
            result.serial = util.getValue(lines, 'ioplatformserialnumber', '=', true);
            result.uuid = util.getValue(lines, 'ioplatformuuid', '=', true).toLowerCase();
            result.sku = util.getValue(lines, 'board-id', '=', true);
          }
          if (callback) { callback(result); }
          resolve(result);
        });
      }
      if (_sunos) {
        if (callback) { callback(result); }
        resolve(result);
      }
      if (_windows) {
        try {
          util.wmic('csproduct get /value').then((stdout, error) => {
            if (!error) {
              // let lines = stdout.split('\r\n').filter(line => line.trim() !== '').filter((line, idx) => idx > 0)[0].trim().split(/\s\s+/);
              let lines = stdout.split('\r\n');
              result.manufacturer = util.getValue(lines, 'vendor', '=');
              result.model = util.getValue(lines, 'name', '=');
              result.version = util.getValue(lines, 'version', '=');
              result.serial = util.getValue(lines, 'identifyingnumber', '=');
              result.uuid = util.getValue(lines, 'uuid', '=').toLowerCase();
              // detect virtual (1)
              if (result.model.toLowerCase() === 'virtualbox' || result.model.toLowerCase() === 'kvm' || result.model.toLowerCase() === 'virtual machine' || result.model.toLowerCase() === 'bochs' || result.model.toLowerCase().startsWith('vmware')) {
                result.virtual = true;
                switch (result.model.toLowerCase()) {
                  case 'virtualbox':
                    result.virtualHost = 'VirtualBox';
                    break;
                  case 'vmware':
                    result.virtualHost = 'VMware';
                    break;
                  case 'kvm':
                    result.virtualHost = 'KVM';
                    break;
                  case 'bochs':
                    result.virtualHost = 'bochs';
                    break;
                }
              }
              if (result.manufacturer.toLowerCase().startsWith('vmware') || result.manufacturer.toLowerCase() === 'xen') {
                result.virtual = true;
                switch (result.manufacturer.toLowerCase()) {
                  case 'vmware':
                    result.virtualHost = 'VMware';
                    break;
                  case 'xen':
                    result.virtualHost = 'Xen';
                    break;
                }
              }
              util.wmic('/namespace:\\\\root\\wmi path MS_SystemInformation get /value').then((stdout, error) => {
                if (!error) {
                  let lines = stdout.split('\r\n');
                  result.sku = util.getValue(lines, 'systemsku', '=');
                }
                if (!result.virtual) {
                  util.wmic('bios get Version, SerialNumber, SMBIOSBIOSVersion').then((stdout, error) => {
                    if (!error) {
                      let lines = stdout.toString();
                      if (lines.indexOf('VRTUAL') >= 0 || lines.indexOf('A M I ') >= 0 || lines.indexOf('VirtualBox') >= 0 || lines.indexOf('VMWare') >= 0 || lines.indexOf('Xen') >= 0) {
                        result.virtual = true;
                        if (lines.indexOf('VirtualBox') >= 0 && !result.virtualHost) {
                          result.virtualHost = 'VirtualBox';
                        }
                        if (lines.indexOf('VMware') >= 0 && !result.virtualHost) {
                          result.virtualHost = 'VMware';
                        }
                        if (lines.indexOf('Xen') >= 0 && !result.virtualHost) {
                          result.virtualHost = 'Xen';
                        }
                        if (lines.indexOf('VRTUAL') >= 0 && !result.virtualHost) {
                          result.virtualHost = 'Hyper-V';
                        }
                        if (lines.indexOf('A M I') >= 0 && !result.virtualHost) {
                          result.virtualHost = 'Virtual PC';
                        }
                      }
                      if (callback) { callback(result); }
                      resolve(result);
                    } else {
                      if (callback) { callback(result); }
                      resolve(result);
                    }
                  });
                } else {
                  if (callback) { callback(result); }
                  resolve(result);
                }
              });
            } else {
              if (callback) { callback(result); }
              resolve(result);
            }
          });
        } catch (e) {
          if (callback) { callback(result); }
          resolve(result);
        }
      }
    });
  });
}

exports.system = system;

function bios(callback) {

  return new Promise((resolve) => {
    process.nextTick(() => {

      let result = {
        vendor: '',
        version: '',
        releaseDate: '',
        revision: '',
      };
      let cmd = '';
      if (_linux || _freebsd || _openbsd || _netbsd) {
        if (process.arch === 'arm') {
          cmd = 'cat /proc/cpuinfo | grep Serial';
        } else {
          cmd = 'export LC_ALL=C; dmidecode -t bios 2>/dev/null; unset LC_ALL';
        }
        exec(cmd, function (error, stdout) {
          let lines = stdout.toString().split('\n');
          result.vendor = util.getValue(lines, 'Vendor');
          result.version = util.getValue(lines, 'Version');
          let datetime = util.getValue(lines, 'Release Date');
          result.releaseDate = util.parseDateTime(datetime).date;
          result.revision = util.getValue(lines, 'BIOS Revision');
          let language = util.getValue(lines, 'Currently Installed Language').split('|')[0];
          if (language) {
            result.language = language;
          }
          if (lines.length && stdout.toString().indexOf('Characteristics:') >= 0) {
            const features = [];
            lines.forEach(line => {
              if (line.indexOf(' is supported') >= 0) {
                const feature = line.split(' is supported')[0].trim();
                features.push(feature);
              }
            });
            result.features = features;
          }
          // Non-Root values
          const cmd = `echo -n "bios_date: "; cat /sys/devices/virtual/dmi/id/bios_date 2>/dev/null; echo;
            echo -n "bios_vendor: "; cat /sys/devices/virtual/dmi/id/bios_vendor 2>/dev/null; echo;
            echo -n "bios_version: "; cat /sys/devices/virtual/dmi/id/bios_version 2>/dev/null; echo;`;
          try {
            lines = execSync(cmd).toString().split('\n');
            result.vendor = !result.vendor ? util.getValue(lines, 'bios_vendor') : result.vendor;
            result.version = !result.version ? util.getValue(lines, 'bios_version') : result.version;
            datetime = util.getValue(lines, 'bios_date');
            result.releaseDate = !result.releaseDate ? util.parseDateTime(datetime).date : result.releaseDate;
          } catch (e) {
            util.noop();
          }
          if (callback) { callback(result); }
          resolve(result);
        });
      }
      if (_darwin) {
        result.vendor = 'Apple Inc.';
        exec(
          'system_profiler SPHardwareDataType -json', function (error, stdout) {
            try {
              const hardwareData = JSON.parse(stdout.toString());
              if (hardwareData && hardwareData.SPHardwareDataType && hardwareData.SPHardwareDataType.length) {
                let bootRomVersion = hardwareData.SPHardwareDataType[0].boot_rom_version;
                bootRomVersion = bootRomVersion ? bootRomVersion.split('(')[0].trim() : null;
                result.version = bootRomVersion;
              }
            } catch (e) {
              util.noop();
            }
            if (callback) { callback(result); }
            resolve(result);
          });
      }
      if (_sunos) {
        result.vendor = 'Sun Microsystems';
        if (callback) { callback(result); }
        resolve(result);
      }
      if (_windows) {
        try {
          util.wmic('bios get /value').then((stdout, error) => {
            if (!error) {
              let lines = stdout.toString().split('\r\n');
              const description = util.getValue(lines, 'description', '=');
              if (description.indexOf(' Version ') !== -1) {
                // ... Phoenix ROM BIOS PLUS Version 1.10 A04
                result.vendor = description.split(' Version ')[0].trim();
                result.version = description.split(' Version ')[1].trim();
              } else if (description.indexOf(' Ver: ') !== -1) {
                // ... BIOS Date: 06/27/16 17:50:16 Ver: 1.4.5
                result.vendor = util.getValue(lines, 'manufacturer', '=');
                result.version = description.split(' Ver: ')[1].trim();
              } else {
                result.vendor = util.getValue(lines, 'manufacturer', '=');
                result.version = util.getValue(lines, 'version', '=');
              }
              result.releaseDate = util.getValue(lines, 'releasedate', '=');
              if (result.releaseDate.length >= 10) {
                result.releaseDate = result.releaseDate.substr(0, 4) + '-' + result.releaseDate.substr(4, 2) + '-' + result.releaseDate.substr(6, 2);
              }
              result.revision = util.getValue(lines, 'buildnumber', '=');
            }

            if (callback) { callback(result); }
            resolve(result);
          });
        } catch (e) {
          if (callback) { callback(result); }
          resolve(result);
        }
      }
    });
  });
}

exports.bios = bios;

function baseboard(callback) {

  return new Promise((resolve) => {
    process.nextTick(() => {

      let result = {
        manufacturer: '',
        model: '',
        version: '',
        serial: '-',
        assetTag: '-',
        memMax: null,
        memSlots: null
      };
      let cmd = '';
      if (_linux || _freebsd || _openbsd || _netbsd) {
        if (process.arch === 'arm') {
          cmd = 'cat /proc/cpuinfo | grep Serial';
          // 'BCM2709', 'BCM2835', 'BCM2708' -->
        } else {
          cmd = 'export LC_ALL=C; dmidecode -t 2 2>/dev/null; unset LC_ALL';
        }
        const workload = [];
        workload.push(execPromise(cmd));
        workload.push(execPromise('export LC_ALL=C; dmidecode -t memory 2>/dev/null'));
        util.promiseAll(
          workload
        ).then(data => {
          let lines = data.results[0] ? data.results[0].toString().split('\n') : [''];
          result.manufacturer = util.getValue(lines, 'Manufacturer');
          result.model = util.getValue(lines, 'Product Name');
          result.version = util.getValue(lines, 'Version');
          result.serial = util.getValue(lines, 'Serial Number');
          result.assetTag = util.getValue(lines, 'Asset Tag');
          // Non-Root values
          const cmd = `echo -n "board_asset_tag: "; cat /sys/devices/virtual/dmi/id/board_asset_tag 2>/dev/null; echo;
            echo -n "board_name: "; cat /sys/devices/virtual/dmi/id/board_name 2>/dev/null; echo;
            echo -n "board_serial: "; cat /sys/devices/virtual/dmi/id/board_serial 2>/dev/null; echo;
            echo -n "board_vendor: "; cat /sys/devices/virtual/dmi/id/board_vendor 2>/dev/null; echo;
            echo -n "board_version: "; cat /sys/devices/virtual/dmi/id/board_version 2>/dev/null; echo;`;
          try {
            lines = execSync(cmd).toString().split('\n');
            result.manufacturer = !result.manufacturer ? util.getValue(lines, 'board_vendor') : result.manufacturer;
            result.model = !result.model ? util.getValue(lines, 'board_name') : result.model;
            result.version = !result.version ? util.getValue(lines, 'board_version') : result.version;
            result.serial = !result.serial ? util.getValue(lines, 'board_serial') : result.serial;
            result.assetTag = !result.assetTag ? util.getValue(lines, 'board_asset_tag') : result.assetTag;
          } catch (e) {
            util.noop();
          }
          if (result.serial.toLowerCase().indexOf('o.e.m.') !== -1) { result.serial = '-'; }
          if (result.assetTag.toLowerCase().indexOf('o.e.m.') !== -1) { result.assetTag = '-'; }

          // mem
          lines = data.results[1] ? data.results[1].toString().split('\n') : [''];
          result.memMax = util.toInt(util.getValue(lines, 'Maximum Capacity')) * 1024 * 1024 * 1024 || null;
          result.memSlots = util.toInt(util.getValue(lines, 'Number Of Devices')) || null;

          // raspberry
          const linesRpi = fs.readFileSync('/proc/cpuinfo').toString().split('\n');
          const hardware = util.getValue(linesRpi, 'hardware');
          if (hardware.startsWith('BCM')) {
            const rpi = util.decodePiCpuinfo(linesRpi);
            result.manufacturer = rpi.manufacturer;
            result.model = 'Raspberry Pi';
            result.serial = rpi.serial;
            result.version = rpi.type + ' - ' + rpi.revision;
            result.memMax = os.totalmem();
            result.memSlots = 0;
          }

          if (callback) { callback(result); }
          resolve(result);
        });
      }
      if (_darwin) {
        const workload = [];
        workload.push(execPromise('ioreg -c IOPlatformExpertDevice -d 2'));
        workload.push(execPromise('system_profiler SPMemoryDataType'));
        util.promiseAll(
          workload
        ).then(data => {
          let lines = data.results[0] ? data.results[0].toString().replace(/[<>"]/g, '').split('\n') : [''];
          result.manufacturer = util.getValue(lines, 'manufacturer', '=', true);
          result.model = util.getValue(lines, 'model', '=', true);
          result.version = util.getValue(lines, 'version', '=', true);
          result.serial = util.getValue(lines, 'ioplatformserialnumber', '=', true);
          result.assetTag = util.getValue(lines, 'board-id', '=', true);

          // mem
          let devices = data.results[1] ? data.results[1].toString().split('        BANK ') : [''];
          if (devices.length === 1) {
            devices = data.results[1] ? data.results[1].toString().split('        DIMM') : [''];
          }
          devices.shift();
          result.memSlots = devices.length;

          if (os.arch() === 'arm64') {
            result.memSlots = 0;
            result.memMax = os.totalmem();
          }

          if (callback) { callback(result); }
          resolve(result);
        });
      }
      if (_sunos) {
        if (callback) { callback(result); }
        resolve(result);
      }
      if (_windows) {
        try {
          const workload = [];
          workload.push(util.wmic('baseboard get /value'));
          workload.push(util.wmic('memphysical get MaxCapacity, MemoryDevices	/value'));
          util.promiseAll(
            workload
          ).then(data => {
            let lines = data.results[0] ? data.results[0].toString().split('\r\n') : [''];

            result.manufacturer = util.getValue(lines, 'manufacturer', '=');
            result.model = util.getValue(lines, 'model', '=');
            if (!result.model) {
              result.model = util.getValue(lines, 'product', '=');
            }
            result.version = util.getValue(lines, 'version', '=');
            result.serial = util.getValue(lines, 'serialnumber', '=');
            result.assetTag = util.getValue(lines, 'partnumber', '=');
            if (!result.assetTag) {
              result.assetTag = util.getValue(lines, 'sku', '=');
            }

            // memphysical
            lines = data.results[1] ? data.results[1].toString().split('\r\n') : [''];
            result.memMax = util.toInt(util.getValue(lines, 'MaxCapacity', '=')) || null;
            result.memSlots = util.toInt(util.getValue(lines, 'MemoryDevices', '=')) || null;

            if (callback) { callback(result); }
            resolve(result);
          });
        } catch (e) {
          if (callback) { callback(result); }
          resolve(result);
        }
      }
    });
  });
}

exports.baseboard = baseboard;

function chassis(callback) {
  const chassisTypes = ['Other',
    'Unknown',
    'Desktop',
    'Low Profile Desktop',
    'Pizza Box',
    'Mini Tower',
    'Tower',
    'Portable',
    'Laptop',
    'Notebook',
    'Hand Held',
    'Docking Station',
    'All in One',
    'Sub Notebook',
    'Space-Saving',
    'Lunch Box',
    'Main System Chassis',
    'Expansion Chassis',
    'SubChassis',
    'Bus Expansion Chassis',
    'Peripheral Chassis',
    'Storage Chassis',
    'Rack Mount Chassis',
    'Sealed-Case PC',
    'Multi-System Chassis',
    'Compact PCI',
    'Advanced TCA',
    'Blade',
    'Blade Enclosure',
    'Tablet',
    'Concertible',
    'Detachable',
    'IoT Gateway ',
    'Embedded PC',
    'Mini PC',
    'Stick PC',
  ];

  return new Promise((resolve) => {
    process.nextTick(() => {

      let result = {
        manufacturer: '',
        model: '',
        type: '',
        version: '',
        serial: '-',
        assetTag: '-',
        sku: '',
      };
      if (_linux || _freebsd || _openbsd || _netbsd) {
        const cmd = `echo -n "chassis_asset_tag: "; cat /sys/devices/virtual/dmi/id/chassis_asset_tag 2>/dev/null; echo;
            echo -n "chassis_serial: "; cat /sys/devices/virtual/dmi/id/chassis_serial 2>/dev/null; echo;
            echo -n "chassis_type: "; cat /sys/devices/virtual/dmi/id/chassis_type 2>/dev/null; echo;
            echo -n "chassis_vendor: "; cat /sys/devices/virtual/dmi/id/chassis_vendor 2>/dev/null; echo;
            echo -n "chassis_version: "; cat /sys/devices/virtual/dmi/id/chassis_version 2>/dev/null; echo;`;
        exec(cmd, function (error, stdout) {
          let lines = stdout.toString().split('\n');
          result.manufacturer = util.getValue(lines, 'chassis_vendor');
          const ctype = parseInt(util.getValue(lines, 'chassis_type').replace(/\D/g, ''));
          result.type = (ctype && !isNaN(ctype) && ctype < chassisTypes.length) ? chassisTypes[ctype - 1] : '';
          result.version = util.getValue(lines, 'chassis_version');
          result.serial = util.getValue(lines, 'chassis_serial');
          result.assetTag = util.getValue(lines, 'chassis_asset_tag');
          if (result.manufacturer.toLowerCase().indexOf('o.e.m.') !== -1) { result.manufacturer = '-'; }
          if (result.version.toLowerCase().indexOf('o.e.m.') !== -1) { result.version = '-'; }
          if (result.serial.toLowerCase().indexOf('o.e.m.') !== -1) { result.serial = '-'; }
          if (result.assetTag.toLowerCase().indexOf('o.e.m.') !== -1) { result.assetTag = '-'; }

          if (callback) { callback(result); }
          resolve(result);
        });
      }
      if (_darwin) {
        exec('ioreg -c IOPlatformExpertDevice -d 2', function (error, stdout) {
          if (!error) {
            let lines = stdout.toString().replace(/[<>"]/g, '').split('\n');
            result.manufacturer = util.getValue(lines, 'manufacturer', '=', true);
            result.model = util.getValue(lines, 'model', '=', true);
            result.version = util.getValue(lines, 'version', '=', true);
            result.serial = util.getValue(lines, 'ioplatformserialnumber', '=', true);
            result.assetTag = util.getValue(lines, 'board-id', '=', true);
          }

          if (callback) { callback(result); }
          resolve(result);
        });
      }
      if (_sunos) {
        if (callback) { callback(result); }
        resolve(result);
      }
      if (_windows) {
        try {
          util.wmic('path Win32_SystemEnclosure get /value').then((stdout, error) => {
            if (!error) {
              let lines = stdout.toString().split('\r\n');

              result.manufacturer = util.getValue(lines, 'manufacturer', '=');
              result.model = util.getValue(lines, 'model', '=');
              const ctype = parseInt(util.getValue(lines, 'ChassisTypes', '=').replace(/\D/g, ''));
              result.type = (ctype && !isNaN(ctype) && ctype < chassisTypes.length) ? chassisTypes[ctype - 1] : '';
              result.version = util.getValue(lines, 'version', '=');
              result.serial = util.getValue(lines, 'serialnumber', '=');
              result.assetTag = util.getValue(lines, 'partnumber', '=');
              result.sku = util.getValue(lines, 'sku', '=');
              if (result.manufacturer.toLowerCase().indexOf('o.e.m.') !== -1) { result.manufacturer = '-'; }
              if (result.version.toLowerCase().indexOf('o.e.m.') !== -1) { result.version = '-'; }
              if (result.serial.toLowerCase().indexOf('o.e.m.') !== -1) { result.serial = '-'; }
              if (result.assetTag.toLowerCase().indexOf('o.e.m.') !== -1) { result.assetTag = '-'; }
            }

            if (callback) { callback(result); }
            resolve(result);
          });
        } catch (e) {
          if (callback) { callback(result); }
          resolve(result);
        }
      }
    });
  });
}

exports.chassis = chassis;

