/**
 * Created by nuintun on 2015/11/25.
 */


'use strict';

module.exports = function (Terminal){
  // CSI Ps n  Device Status Report (DSR).
  //     Ps = 5  -> Status Report.  Result (``OK'') is
  //   CSI 0 n
  //     Ps = 6  -> Report Cursor Position (CPR) [row;column].
  //   Result is
  //   CSI r ; c R
  // CSI ? Ps n
  //   Device Status Report (DSR, DEC-specific).
  //     Ps = 6  -> Report Cursor Position (CPR) [row;column] as CSI
  //     ? r ; c R (assumes page is zero).
  //     Ps = 1 5  -> Report Printer status as CSI ? 1 0  n  (ready).
  //     or CSI ? 1 1  n  (not ready).
  //     Ps = 2 5  -> Report UDK status as CSI ? 2 0  n  (unlocked)
  //     or CSI ? 2 1  n  (locked).
  //     Ps = 2 6  -> Report Keyboard status as
  //   CSI ? 2 7  ;  1  ;  0  ;  0  n  (North American).
  //   The last two parameters apply to VT400 & up, and denote key-
  //   board ready and LK01 respectively.
  //     Ps = 5 3  -> Report Locator status as
  //   CSI ? 5 3  n  Locator available, if compiled-in, or
  //   CSI ? 5 0  n  No Locator, if not.
  Terminal.prototype.deviceStatus = function (params){
    if (!this.prefix) {
      switch (params[0]) {
        case 5:
          // status report
          this.send('\x1b[0n');
          break;
        case 6:
          // cursor position
          this.send('\x1b['
            + (this.y + 1)
            + ';'
            + (this.x + 1)
            + 'R');
          break;
      }
    } else if (this.prefix === '?') {
      // modern xterm doesnt seem to
      // respond to any of these except ?6, 6, and 5
      switch (params[0]) {
        case 6:
          // cursor position
          this.send('\x1b[?'
            + (this.y + 1)
            + ';'
            + (this.x + 1)
            + 'R');
          break;
        case 15:
          // no printer
          // -this.send('\x1b[?11n');
          break;
        case 25:
          // dont support user defined keys
          // -this.send('\x1b[?21n');
          break;
        case 26:
          // north american keyboard
          // -this.send('\x1b[?27;1;0;0n');
          break;
        case 53:
          // no dec locator/mouse
          // -this.send('\x1b[?50n');
          break;
      }
    }
  };

  // CSI Ps c  Send Device Attributes (Primary DA).
  //     Ps = 0  or omitted -> request attributes from terminal.  The
  //     response depends on the decTerminalID resource setting.
  //     -> CSI ? 1 ; 2 c  (``VT100 with Advanced Video Option'')
  //     -> CSI ? 1 ; 0 c  (``VT101 with No Options'')
  //     -> CSI ? 6 c  (``VT102'')
  //     -> CSI ? 6 0 ; 1 ; 2 ; 6 ; 8 ; 9 ; 1 5 ; c  (``VT220'')
  //   The VT100-style response parameters do not mean anything by
  //   themselves.  VT220 parameters do, telling the host what fea-
  //   tures the terminal supports:
  //     Ps = 1  -> 132-columns.
  //     Ps = 2  -> Printer.
  //     Ps = 6  -> Selective erase.
  //     Ps = 8  -> User-defined keys.
  //     Ps = 9  -> National replacement character sets.
  //     Ps = 1 5  -> Technical characters.
  //     Ps = 2 2  -> ANSI color, e.g., VT525.
  //     Ps = 2 9  -> ANSI text locator (i.e., DEC Locator mode).
  // CSI > Ps c
  //   Send Device Attributes (Secondary DA).
  //     Ps = 0  or omitted -> request the terminal's identification
  //     code.  The response depends on the decTerminalID resource set-
  //     ting.  It should apply only to VT220 and up, but xterm extends
  //     this to VT100.
  //     -> CSI  > Pp ; Pv ; Pc c
  //   where Pp denotes the terminal type
  //     Pp = 0  -> ``VT100''.
  //     Pp = 1  -> ``VT220''.
  //   and Pv is the firmware version (for xterm, this was originally
  //   the XFree86 patch number, starting with 95).  In a DEC termi-
  //   nal, Pc indicates the ROM cartridge registration number and is
  //   always zero.
  // More information:
  //   xterm/charproc.c - line 2012, for more information.
  //   vim responds with ^[[?0c or ^[[?1c after the terminal's response (?)
  Terminal.prototype.sendDeviceAttributes = function (params){
    if (params[0] > 0) return;

    if (!this.prefix) {
      if (this.is('xterm')
        || this.is('rxvt-unicode')
        || this.is('screen')) {
        this.send('\x1b[?1;2c');
      } else if (this.is('linux')) {
        this.send('\x1b[?6c');
      }
    } else if (this.prefix === '>') {
      // xterm and urxvt
      // seem to spit this
      // out around ~370 times (?).
      if (this.is('xterm')) {
        this.send('\x1b[>0;276;0c');
      } else if (this.is('rxvt-unicode')) {
        this.send('\x1b[>85;95;0c');
      } else if (this.is('linux')) {
        // not supported by linux console.
        // linux console echoes parameters.
        this.send(params[0] + 'c');
      } else if (this.is('screen')) {
        this.send('\x1b[>83;40003;0c');
      }
    }
  };
};