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assets/webapps/mobile-wallet.gaiamobile.org/js/applets/applet_model.js

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+'use strict';
+
+/* globals SEUtils, TAG */
+/* exported AppletModel, AppletListModel */
+
+(function(exports) {
+  // TODO decide how to store data in the app
+  var AppletModel = function(id, aid, state){
+    this.id = id;
+    this.aid = SEUtils.byteToHexString(aid);
+    this.lifecycleState = state[0];
+    this.contactlessState = state[1];
+  };
+
+  AppletModel.prototype = {
+    // id in view
+    id: null,
+    aid: null,
+    lifecycleState: null,
+    contactlessState: null,
+
+    set state(value) {
+      this.lifecycleState = value[0];
+      this.contactlessState = value[1];
+    },
+
+    get selected() {
+      return this.contactlessState === 1;
+    },
+
+    get imgId() {
+      return this.aid;
+    }
+  };
+
+  var AppletListModel = function(appletsData, filter) {
+    if(appletsData) {
+      this.updateList(appletsData, filter);
+    }
+  };
+
+  AppletListModel.prototype = {
+    applets: [],
+
+    updateList: function alm_updateList(appletsData, filter) {
+      var parsedApplets = this._parseAppletList(appletsData);
+      parsedApplets = (!filter) ? parsedApplets : parsedApplets.filter(filter);
+
+      // now we create AppletModel objects and store them in the list
+      var refreshed = [];
+      parsedApplets.forEach((appl, idx) => {
+        var aidHex = SEUtils.byteToHexString(appl.aid);
+        var nAppl = this.getAppletByHexAID(aidHex);
+        if(nAppl) {
+          nAppl.state = appl.state;
+        } else {
+          nAppl = new AppletModel('appl'+idx, appl.aid, appl.state);
+        }
+
+        refreshed.push(nAppl);
+      });
+
+      this.applets = refreshed;
+    },
+
+    getAppletByID: function alm_getAppletByID(id) {
+      return this.applets.find((applet) => applet.id === id);
+    },
+
+    getAppletByHexAID: function alm_getAppletByHexAID(aid) {
+      return this.applets.find((applet) => applet.aid === aid);
+    },
+
+    _parseAppletList: function alm_parseAppletList(data) {
+      var list = [];
+      for(var i = 0, len = data.length; i < len;) {
+        if(data[i] === TAG.CRS.APP_TEMPLATE) {
+          var end = i+2 + data[i+1];
+          var appletData = data.subarray(i+2, end);
+          var applet = this._parseApplet(appletData);
+
+          if(applet) {
+            list.push(applet);
+          }
+          i = end;
+        }
+      }
+
+      return list;
+    },
+
+    _parseApplet: function alm_parseApplet(data) {
+      if (data[0] === TAG.CRS.AID) {
+        var applet = {
+          aid: data.subarray(2, 2 + data[1]),
+          state: data.subarray(data[1] + 5)
+        };
+        return applet;
+      }
+    },
+  };
+
+  exports.AppletModel = AppletModel;
+  exports.AppletListModel = AppletListModel;
+}((typeof exports === 'undefined') ? window : exports));