angarg12 / nucleogenesis

 visibility

 Service that holds all functions that determine which elements are visible.

 @namespace Services

 */

'use strict';

angular

  .module('game')

  .service('visibility', ['state',

    function(state) {

      this.visible = function(items, func, currentElement, sortFunc) {

        let visibles = [];

        for (let i in items) {

          // if it is an array, we need to extract the item from the index

          let item = Array.isArray(items) ? items[i] : i;

          if (func(item, currentElement)) {

            visibles.push(item);

          }

        }

        if(sortFunc){

          visibles.sort(sortFunc);

        }

        return visibles;

      };

      function meetDependencies(upgrades, dependencies) {

        if(!dependencies){

          return true;

        }

        for (let dep of dependencies) {

          if (!upgrades[dep]) {

            return false;

          }

        }

        return true;

      }

    }

  ]);