[polari/wip/raresv/blankStateWidgets: 1/2] roomManager: add a way to track the first session

[Rares Visalom <raresvisalom src gnome org>]

commit 88f7b3d6864f61bb518c8323c4d754a1bb3d0715
Author: Rares Visalom <rares visalom gmail com>
Date:   Fri Nov 25 00:04:14 2016 +0200

    roomManager: add a way to track the first session
    
    The isFirstRun property tracks whether or not this is the
    first time polari is opened, and the isRoomAdded property
    tracks whether or not rooms have been joined this session.
    The prepare-shutdown signal is tracked in order to check
    if we should delete the file or not.

 src/roomManager.js |   31 +++++++++++++++++++++++++++++++
 1 files changed, 31 insertions(+), 0 deletions(-)
---
diff --git a/src/roomManager.js b/src/roomManager.js
index f00065c..89ef2d8 100644
--- a/src/roomManager.js
+++ b/src/roomManager.js
@@ -40,6 +40,7 @@ const _RoomManager = new Lang.Class({
             else
                 this._app.lookup_action(a.name).connect('activate', a.handler);
         });
+        this._app.connect('prepare-shutdown', Lang.bind(this, this._validateInitialSetup));
 
         this._accountsMonitor.connect('account-enabled', (mon, account) => {
             this._restoreRooms(account.object_path);
@@ -52,6 +53,21 @@ const _RoomManager = new Lang.Class({
             this._removeSavedChannelsForAccount(account.object_path);
         });
         this._accountsMonitor.prepare(() => { this._restoreRooms(); });
+
+        this.isFirstRun = false;
+        let file = Gio.File.new_for_path(GLib.get_user_cache_dir() + '/polari/is-first-run');
+
+        try {
+            let stream = file.create(0, null);
+            stream.close(null);
+            this.isFirstRun = true;
+        }
+        catch (e){
+            if (e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.EXISTS))
+                this.isFirstRun = false;
+        }
+
+        this.isRoomAdded = false;
     },
 
     lookupRoom: function(id) {
@@ -186,6 +202,8 @@ const _RoomManager = new Lang.Class({
         if (present && this._app.active_window)
             this._app.active_window.active_room = room;
 
+        this.isRoomAdded = true;
+
         return room;
     },
 
@@ -201,6 +219,19 @@ const _RoomManager = new Lang.Class({
     _removeRoom: function(room) {
         if (this._rooms.delete(room.id))
             this.emit('room-removed', room);
+    },
+
+    _validateInitialSetup: function() {
+        if (this.isFirstRun && !this.isRoomAdded) {
+            let file = Gio.File.new_for_path(GLib.get_user_cache_dir() + '/polari/is-first-run');
+
+            try {
+                file.delete(null);
+            }
+            catch (e) {
+                log("Failed to remove is-first-run file: " + e.message);
+            }
+        }
     }
 });
 Signals.addSignalMethods(_RoomManager.prototype);