angarg12 / nucleogenesis

/* globals numberformat */

/**

 util

 Utility service with misc. functions.

 @namespace Services

 */

'use strict';

angular

  .module('game')

  .service('util', ['prettyNumberFilter',

    '$sce',

    'data',

    'state',

    function(prettyNumber, $sce, data, state) {

      this.gaussian = new Ziggurat();

      /* Return the HTML representation of an element, or the element itself

      if it doesn't have one */

      this.getHTML = function(resource) {

        let html = data.html[resource];

        if (typeof html === 'undefined' && data.resources[resource]) {

          html = data.resources[resource].html;

        }

        if (typeof html === 'undefined') {

          return resource;

        }

        return html;

      };

      this.randomDraw = function(number, p) {

        let production;

        let mean = number * p;

        // Gaussian distribution

        let q = 1 - p;

        let variance = number * p * q;

        let std = Math.sqrt(variance);

        production = Math.round(this.gaussian.nextGaussian() * std + mean);

        if (production > number) {

          production = number;

        }

        if (production < 0) {

          production = 0;

        }

        return production;

      };

      this.trustHTML = function(html) {

        return $sce.trustAsHtml(html);

      };

    }

  ]);