UI changes, added utilitiy services, persistance, serialization

app/js/service-serializer.js

@@ -0,0 +1,69 @@
+/**
+ * Service managing seralization and deserialization of models for use in URLs and persistene.
+ */
+angular.module('app').service('Serializer', ['lodash', function (_) {
+
+ /**
+   * Serializes the ships selected components for all slots to a URL friendly string.
+   * @param {Ship} ship   The ship to be serialized.
+   * @return {string}     Encoded string of components
+   */
+  this.fromShip = function(ship) {
+    var data = [
+      ship.bulkheads.id,
+      _.map(ship.common, idToStr),
+      _.map(ship.hardpoints, idToStr),
+      _.map(ship.internal, idToStr),
+    ];
+
+    return _.flatten(data).join('');
+  };
+
+  /**
+   * Updates an existing ship instance's slots with components determined by the
+   * code.
+   *
+   * @param {Ship}    ship  The ship instance to be updated
+   * @param {string}  code  The string to deserialize
+   */
+  this.toShip = function (ship, code) {
+    var commonCount = ship.common.length;
+    var hpCount = commonCount + ship.hardpoints.length;
+    var comps = {
+      bulkheads: code.charAt(0) * 1,
+      common: new Array(ship.common.length),
+      hardpoints: new Array(ship.hardpoints.length),
+      internal: new Array(ship.internal.length)
+    };
+
+    // TODO: improve...
+    for (var i = 1, c = 0, l = code.length; i < l; i++) {
+      var empty = code.charAt(i) == '-';
+      if (c < commonCount) {
+        comps.common[c] = empty? 0 : code.substring(i, i + 2);
+      } else if (c < hpCount) {
+        comps.hardpoints[c - commonCount] = empty? 0 : code.substring(i, i + 2);
+      } else {
+        comps.internal[c - hpCount] = empty? 0 : code.substring(i, i + 2);
+      }
+      if (!empty) {
+        i++;
+      }
+      c++;
+    }
+    ship.buildWith(comps);
+  };
+
+  /**
+   * Utility function to retrieve a safe string for selected component for a slot.
+   * Used for serialization to code only.
+   *
+   * @private
+   * @param  {object} slot The slot object.
+   * @return {string}      The id of the selected component or '-' if none selected
+   */
+  function idToStr(slot) {
+    return (slot.id === null)? '-' : slot.id;
+  }
+
+}]);