CrazySquirrel/Utils

"use strict";
/**
 * Class for working with system
 */
export default class System {

  /**
   * Get system info
   * @return {{name: string, version: string}}
   */
  public static getInfo(): {
    name: string,
    version: string,
  } {
    return {
      name: System.getName(),
      version: System.getVersion(),
    };
  }

  /**
   * Get OS name
   * @return {string}
   */
  public static getName(): string {
    let os = "";
    const clientStrings = [
      {
        r: /(Windows 10.0|Windows NT 10.0)/,
        s: "Windows 10",
      },
      {
        r: /(Windows 8.1|Windows NT 6.3)/,
        s: "Windows 8.1",
      },
      {
        r: /(Windows 8|Windows NT 6.2)/,
        s: "Windows 8",
      },
      {
        r: /(Windows 7|Windows NT 6.1)/,
        s: "Windows 7",
      },
      {
        r: /Windows NT 6.0/,
        s: "Windows Vista",
      },
      {
        r: /Windows NT 5.2/,
        s: "Windows Server 2003",
      },
      {
        r: /(Windows NT 5.1|Windows XP)/,
        s: "Windows XP",
      },
      {
        r: /(Windows NT 5.0|Windows 2000)/,
        s: "Windows 2000",
      },
      {
        r: /(Win 9x 4.90|Windows ME)/,
        s: "Windows ME",
      },
      {
        r: /(Windows 98|Win98)/,
        s: "Windows 98",
      },
      {
        r: /(Windows 95|Win95|Windows_95)/,
        s: "Windows 95",
      },
      {
        r: /(Windows NT 4.0|WinNT4.0|WinNT|Windows NT)/,
        s: "Windows NT 4.0",
      },
      {
        r: /Windows CE/,
        s: "Windows CE",
      },
      {
        r: /Win16/,
        s: "Windows 3.11",
      },
      {
        r: /Android/,
        s: "Android",
      },
      {
        r: /OpenBSD/,
        s: "Open BSD",
      },
      {
        r: /SunOS/,
        s: "Sun OS",
      },
      {
        r: /(Linux|X11)/,
        s: "Linux",
      },
      {
        r: /(iPhone|iPad|iPod)/,
        s: "iOS",
      },
      {
        r: /Mac OS X/,
        s: "Mac OS X",
      },
      {
        r: /(MacPPC|MacIntel|Mac_PowerPC|Macintosh)/,
        s: "Mac OS",
      },
      {
        r: /QNX/,
        s: "QNX",
      },
      {
        r: /UNIX/,
        s: "UNIX",
      },
      {
        r: /BeOS/,
        s: "BeOS",
      },
      {
        r: /OS\/2/,
        s: "OS/2",
      },
      {
        r: /(nuhk|Googlebot|Yammybot|Openbot|Slurp|MSNBot|Ask Jeeves\/Teoma|ia_archiver)/,
        s: "Search Bot",
      },
    ];

    for (let j = 0; j < clientStrings.length; j++) {
      const cs = clientStrings[j];

      if (cs.r.test(navigator.userAgent)) {
        os = cs.s;
        break;
      }
    }
    return os;
  }

  /**
   * Get OS version
   * @return {string}
   */
  public static getVersion(): string {
    let os = System.getName();
    let osVersion: any = "";

    if (/Windows/.test(os)) {
      osVersion = /Windows (.*)/.exec(os);
      if (osVersion) {
        osVersion = osVersion[1];
        os = "Windows";
      }
    }

    switch (os) {
      case "Mac OS X":
        osVersion = /Mac OS X (10[._\d]+)/.exec(navigator.userAgent);
        if (osVersion) {
          osVersion = osVersion[1];
        }
        break;

      case "Android":
        osVersion = /Android ([._\d]+)/.exec(navigator.userAgent);
        if (osVersion) {
          osVersion = osVersion[1];
        }
        break;

      case "iOS":
        const reg = /OS (\d+)_(\d+)_?(\d+)?/.exec(navigator.appVersion);
        if (reg) {
          osVersion = reg[1] + "." + reg[2] + "." + (reg[3] || 0);
        }
        break;
      default:
    }

    return osVersion || "";
  }
}