Two fixes for tricky import/register scenarios (#2072)

* Clear data on finish of new install, unless re-link/light import

* Don't show setup options in file menu in middle of light import

* Naming changes to address feedback

js/views/app_view.js

@@ -54,7 +54,7 @@
         },
         finishLightImport: function() {
           var options = {
-            startStep: Whisper.InstallView.Steps.SCAN_QR_CODE,
+            hasExistingData: true
           };
           this.openInstaller(options);
         },
@@ -65,7 +65,16 @@
           }
         },
         openInstaller: function(options) {
+          options = options || {};
+
+          // If we're in the middle of import, we don't want to show the menu options
+          //   allowing the user to switch to other ways to set up the app. If they
+          //   switched back and forth in the middle of a light import, they'd lose all
+          //   that imported data.
+          if (!options.hasExistingData) {
             window.addSetupMenuItems();
+          }
+
           this.resetViews();
           var installView = this.installView = new Whisper.InstallView(options);
           this.openView(this.installView);

js/views/install_view.js

@@ -32,9 +32,8 @@
             this.connect();
             this.on('disconnected', this.reconnect);
 
-            if (Whisper.Registration.everDone() || options.startStep) {
+            // Keep data around if it's a re-link, or the middle of a light import
-                this.selectStep(options.startStep || Steps.SCAN_QR_CODE);
+            this.shouldRetainData = Whisper.Registration.everDone() || options.hasExistingData;
-            }
         },
         render_attributes: function() {
             var errorMessage;
@@ -162,11 +161,29 @@
                     }
 
                     this.selectStep(Steps.PROGRESS_BAR);
+
+                    var finish = function() {
                         resolve(name);
+                    };
+
+                    // Delete all data from database unless we're in the middle
+                    //   of a re-link, or we are finishing a light import. Without this,
+                    //   app restarts at certain times can cause weird things to happen,
+                    //   like data from a previous incomplete light import showing up
+                    //   after a new install.
+                    if (this.shouldRetainData) {
+                        return finish();
+                    }
+
+                    Whisper.Backup.clearDatabase().then(finish, function(error) {
+                        console.log(
+                          'confirmNumber: error clearing database',
+                          error && error.stack ? error.stack : error
+                        );
+                        finish();
+                    });
                 }.bind(this));
             }.bind(this));
         },
     });
-
-    Whisper.InstallView.Steps = Steps;
 })();