1 files changed, 55 insertions, 0 deletions
diff --git a/browser/extensions/screenshots/background/analytics.js b/browser/extensions/screenshots/background/analytics.js
new file mode 100644
index 0000000000..612a2be9ca
--- /dev/null
+++ b/browser/extensions/screenshots/background/analytics.js
@@ -0,0 +1,55 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* globals main, browser, catcher, log */
+
+"use strict";
+
+this.analytics = (function() {
+  const exports = {};
+
+  let telemetryEnabled;
+
+  exports.incrementCount = function(scalar) {
+    const allowedScalars = [
+      "download",
+      "upload",
+      "copy",
+      "visible",
+      "full_page",
+      "custom",
+      "element",
+    ];
+    if (!allowedScalars.includes(scalar)) {
+      const err = `incrementCount passed an unrecognized scalar ${scalar}`;
+      log.warn(err);
+      return Promise.resolve();
+    }
+    return browser.telemetry
+      .scalarAdd(`screenshots.${scalar}`, 1)
+      .catch(err => {
+        log.warn(`incrementCount failed with error: ${err}`);
+      });
+  };
+
+  exports.refreshTelemetryPref = function() {
+    return browser.telemetry.canUpload().then(
+      result => {
+        telemetryEnabled = result;
+      },
+      error => {
+        // If there's an error reading the pref, we should assume that we shouldn't send data
+        telemetryEnabled = false;
+        throw error;
+      }
+    );
+  };
+
+  exports.isTelemetryEnabled = function() {
+    catcher.watchPromise(exports.refreshTelemetryPref());
+    return telemetryEnabled;
+  };
+
+  return exports;
+})();