Initial commit

lib/assets/javascripts/builder/data/export-map-definition-model.js

@@ -0,0 +1,66 @@
+var Backbone = require('backbone');
+
+/**
+ * Model that represents a visualization export (v3)
+ */
+
+module.exports = Backbone.Model.extend({
+
+  initialize: function (attrs, opts) {
+    if (!attrs.visualization_id) throw new Error('visualization_id is required');
+    if (!opts.configModel) throw new Error('configModel is required');
+
+    this._configModel = opts.configModel;
+  },
+
+  urlRoot: function () {
+    var baseUrl = this._configModel.get('base_url');
+
+    return baseUrl + '/api/v3/visualization_exports';
+  },
+
+  requestExport: function () {
+    this.save(null, {
+      success: this._requestExportSuccessHandler.bind(this)
+    });
+
+    // TODO add metrics for private and public exports
+  },
+
+  cancelExport: function () {
+    this._interrupt();
+  },
+
+  _requestExportSuccessHandler: function () {
+    this._pollPID = setInterval(function () {
+      this.fetch({
+        success: this._checkState.bind(this),
+        error: this._errorHandler.bind(this)
+      });
+    }.bind(this), 2000);
+  },
+
+  _checkState: function () {
+    if (this.get('state') === 'complete') {
+      this._finishExport();
+    } else if (this.get('state') === 'failure') {
+      this._errorHandler();
+    }
+  },
+
+  _finishExport: function () {
+    clearInterval(this._pollPID);
+  },
+
+  _errorHandler: function () {
+    this._interrupt();
+
+    throw new Error('There is a problem with your export. Please try again.');
+  },
+
+  _interrupt: function () {
+    clearInterval(this._pollPID);
+
+    this.set('state', 'failure');
+  }
+});