'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”';