'use strict';
// @ts-check
// ==================================================================================
// virtualbox.js
// ----------------------------------------------------------------------------------
// Description:   System Information - library
//                for Node.js
// Copyright:     (c) 2014 - 2020
// Author:        Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License:       MIT
// ==================================================================================
// 14. Docker
// ----------------------------------------------------------------------------------

const os = require('os');
const exec = require('child_process').exec;
const util = require('./util');

function vboxInfo(callback) {

  // fallback - if only callback is given
  let result = [];
  return new Promise((resolve) => {
    process.nextTick(() => {
      try {
        exec(util.getVboxmanage() + ' list vms --long', function (error, stdout) {
          let parts = (os.EOL + stdout.toString()).split(os.EOL + 'Name:');
          parts.shift();
          parts.forEach(part => {
            const lines = ('Name:' + part).split(os.EOL);
            const state = util.getValue(lines, 'State');
            const running = state.startsWith('running');
            const runningSinceString = running ? state.replace('running (since ', '').replace(')', '').trim() : '';
            let runningSince = 0;
            try {
              if (running) {
                const sinceDateObj = new Date(runningSinceString);
                const offset = sinceDateObj.getTimezoneOffset();
                runningSince = Math.round((Date.now() - Date.parse(sinceDateObj)) / 1000) + offset * 60;
              }
            } catch (e) {
              util.noop();
            }
            const stoppedSinceString = !running ? state.replace('powered off (since', '').replace(')', '').trim() : '';
            let stoppedSince = 0;
            try {
              if (!running) {
                const sinceDateObj = new Date(stoppedSinceString);
                const offset = sinceDateObj.getTimezoneOffset();
                stoppedSince = Math.round((Date.now() - Date.parse(sinceDateObj)) / 1000) + offset * 60;
              }
            } catch (e) {
              util.noop();
            }
            result.push({
              id: util.getValue(lines, 'UUID'),
              name: util.getValue(lines, 'Name'),
              running,
              started: runningSinceString,
              runningSince,
              stopped: stoppedSinceString,
              stoppedSince,
              guestOS: util.getValue(lines, 'Guest OS'),
              hardwareUUID: util.getValue(lines, 'Hardware UUID'),
              memory: parseInt(util.getValue(lines, 'Memory size', '     '), 10),
              vram: parseInt(util.getValue(lines, 'VRAM size'), 10),
              cpus: parseInt(util.getValue(lines, 'Number of CPUs'), 10),
              cpuExepCap: util.getValue(lines, 'CPU exec cap'),
              cpuProfile: util.getValue(lines, 'CPUProfile'),
              chipset: util.getValue(lines, 'Chipset'),
              firmware: util.getValue(lines, 'Firmware'),
              pageFusion: util.getValue(lines, 'Page Fusion') === 'enabled',
              configFile: util.getValue(lines, 'Config file'),
              snapshotFolder: util.getValue(lines, 'Snapshot folder'),
              logFolder: util.getValue(lines, 'Log folder'),
              HPET: util.getValue(lines, 'HPET') === 'enabled',
              PAE: util.getValue(lines, 'PAE') === 'enabled',
              longMode: util.getValue(lines, 'Long Mode') === 'enabled',
              tripleFaultReset: util.getValue(lines, 'Triple Fault Reset') === 'enabled',
              APIC: util.getValue(lines, 'APIC') === 'enabled',
              X2APIC: util.getValue(lines, 'X2APIC') === 'enabled',
              ACPI: util.getValue(lines, 'ACPI') === 'enabled',
              IOAPIC: util.getValue(lines, 'IOAPIC') === 'enabled',
              biosAPICmode: util.getValue(lines, 'BIOS APIC mode'),
              bootMenuMode: util.getValue(lines, 'Boot menu mode'),
              bootDevice1: util.getValue(lines, 'Boot Device 1'),
              bootDevice2: util.getValue(lines, 'Boot Device 2'),
              bootDevice3: util.getValue(lines, 'Boot Device 3'),
              bootDevice4: util.getValue(lines, 'Boot Device 4'),
              timeOffset: util.getValue(lines, 'Time offset'),
              RTC: util.getValue(lines, 'RTC'),
            });
          });

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

exports.vboxInfo = vboxInfo;