text: 'use strict';
  /**
   * @module Nyan
   */
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var constants = require('../runner').constants;
  var inherits = require('../utils').inherits;
  var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
  var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
  var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
  var EVENT_RUN_END = constants.EVENT_RUN_END;
  var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
  
  /**
   * Expose `Dot`.
   */
  
  exports = module.exports = NyanCat;
  
  /**
   * Constructs a new `Nyan` reporter instance.
   *
   * @public
   * @class Nyan
   * @memberof Mocha.reporters
   * @extends Mocha.reporters.Base
   * @param {Runner} runner - Instance triggers reporter actions.
   * @param {Object} [options] - runner options
   */
  function NyanCat(runner, options) {
    Base.call(this, runner, options);
  
    var self = this;
    var width = (Base.window.width * 0.75) | 0;
    var nyanCatWidth = (this.nyanCatWidth = 11);
  
    this.colorIndex = 0;
    this.numberOfLines = 4;
    this.rainbowColors = self.generateColors();
    this.scoreboardWidth = 5;
    this.tick = 0;
    this.trajectories = [[], [], [], []];
    this.trajectoryWidthMax = width - nyanCatWidth;
  
    runner.on(EVENT_RUN_BEGIN, function () {
      Base.cursor.hide();
      self.draw();
    });
  
    runner.on(EVENT_TEST_PENDING, function () {
      self.draw();
    });
  
    runner.on(EVENT_TEST_PASS, function () {
      self.draw();
    });
  
    runner.on(EVENT_TEST_FAIL, function () {
      self.draw();
    });
  
    runner.once(EVENT_RUN_END, function () {
      Base.cursor.show();
      for (var i = 0; i < self.numberOfLines; i++) {
        write('\n');
      }
      self.epilogue();
    });
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(NyanCat, Base);
  
  /**
   * Draw the nyan cat
   *
   * @private
   */
  
  NyanCat.prototype.draw = function () {
    this.appendRainbow();
    this.drawScoreboard();
    this.drawRainbow();
    this.drawNyanCat();
    this.tick = !this.tick;
  };
  
  /**
   * Draw the "scoreboard" showing the number
   * of passes, failures and pending tests.
   *
   * @private
   */
  
  NyanCat.prototype.drawScoreboard = function () {
    var stats = this.stats;
  
    function draw(type, n) {
      write(' ');
      write(Base.color(type, n));
      write('\n');
    }
  
    draw('green', stats.passes);
    draw('fail', stats.failures);
    draw('pending', stats.pending);
    write('\n');
  
    this.cursorUp(this.numberOfLines);
  };
  
  /**
   * Append the rainbow.
   *
   * @private
   */
  
  NyanCat.prototype.appendRainbow = function () {
    var segment = this.tick ? '_' : '-';
    var rainbowified = this.rainbowify(segment);
  
    for (var index = 0; index < this.numberOfLines; index++) {
      var trajectory = this.trajectories[index];
      if (trajectory.length >= this.trajectoryWidthMax) {
        trajectory.shift();
      }
      trajectory.push(rainbowified);
    }
  };
  
  /**
   * Draw the rainbow.
   *
   * @private
   */
  
  NyanCat.prototype.drawRainbow = function () {
    var self = this;
  
    this.trajectories.forEach(function (line) {
      write('\u001b[' + self.scoreboardWidth + 'C');
      write(line.join(''));
      write('\n');
    });
  
    this.cursorUp(this.numberOfLines);
  };
  
  /**
   * Draw the nyan cat
   *
   * @private
   */
  NyanCat.prototype.drawNyanCat = function () {
    var self = this;
    var startWidth = this.scoreboardWidth + this.trajectories[0].length;
    var dist = '\u001b[' + startWidth + 'C';
    var padding = '';
  
    write(dist);
    write('_,------,');
    write('\n');
  
    write(dist);
    padding = self.tick ? '  ' : '   ';
    write('_|' + padding + '/\\_/\\ ');
    write('\n');
  
    write(dist);
    padding = self.tick ? '_' : '__';
    var tail = self.tick ? '~' : '^';
    write(tail + '|' + padding + this.face() + ' ');
    write('\n');
  
    write(dist);
    padding = self.tick ? ' ' : '  ';
    write(padding + '""  "" ');
    write('\n');
  
    this.cursorUp(this.numberOfLines);
  };
  
  /**
   * Draw nyan cat face.
   *
   * @private
   * @return {string}
   */
  
  NyanCat.prototype.face = function () {
    var stats = this.stats;
    if (stats.failures) {
      return '( x .x)';
    } else if (stats.pending) {
      return '( o .o)';
    } else if (stats.passes) {
      return '( ^ .^)';
    }
    return '( - .-)';
  };
  
  /**
   * Move cursor up `n`.
   *
   * @private
   * @param {number} n
   */
  
  NyanCat.prototype.cursorUp = function (n) {
    write('\u001b[' + n + 'A');
  };
  
  /**
   * Move cursor down `n`.
   *
   * @private
   * @param {number} n
   */
  
  NyanCat.prototype.cursorDown = function (n) {
    write('\u001b[' + n + 'B');
  };
  
  /**
   * Generate rainbow colors.
   *
   * @private
   * @return {Array}
   */
  NyanCat.prototype.generateColors = function () {
    var colors = [];
  
    for (var i = 0; i < 6 * 7; i++) {
      var pi3 = Math.floor(Math.PI / 3);
      var n = i * (1.0 / 6);
      var r = Math.floor(3 * Math.sin(n) + 3);
      var g = Math.floor(3 * Math.sin(n + 2 * pi3) + 3);
      var b = Math.floor(3 * Math.sin(n + 4 * pi3) + 3);
      colors.push(36 * r + 6 * g + b + 16);
    }
  
    return colors;
  };
  
  /**
   * Apply rainbow to the given `str`.
   *
   * @private
   * @param {string} str
   * @return {string}
   */
  NyanCat.prototype.rainbowify = function (str) {
    if (!Base.useColors) {
      return str;
    }
    var color = this.rainbowColors[this.colorIndex % this.rainbowColors.length];
    this.colorIndex += 1;
    return '\u001b[38;5;' + color + 'm' + str + '\u001b[0m';
  };
  
  /**
   * Stdout helper.
   *
   * @param {string} string A message to write to stdout.
   */
  function write(string) {
    process.stdout.write(string);
  }
  
  NyanCat.description = '"nyan cat"';
  