[atomato] [Engine] Add basic engine API

[Rodrigo Moya <rodrigo src gnome org>]

commit f6861c95928edf926bddceaf240fb1981b6b069d
Author: Rodrigo Moya <rodrigo gnome org>
Date:   Sat Feb 13 19:59:51 2016 +0100

    [Engine] Add basic engine API

 src/engine/action.vala             |   91 ++++++++++++++++++++++++++++++++++++
 src/engine/aggregate-action.vala   |   60 +++++++++++++++++++++++
 src/engine/conditional-action.vala |   51 ++++++++++++++++++++
 src/engine/loop-action.vala        |   54 +++++++++++++++++++++
 src/main.vala                      |    2 +-
 5 files changed, 257 insertions(+), 1 deletions(-)
---
diff --git a/src/engine/action.vala b/src/engine/action.vala
new file mode 100644
index 0000000..3ff7087
--- /dev/null
+++ b/src/engine/action.vala
@@ -0,0 +1,91 @@
+/* GNOME Automation Engine
+ * Copyright (C) 2006-2016 The GNOME Foundation
+ *
+ * Authors:
+ *      Rodrigo Moya (rodrigo gnome org)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this Library; see the file COPYING.  If not,
+ * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+namespace Atomato.Engine
+{
+    public delegate ActionResult ActionFunc (ActionArguments args);
+
+    public class ActionArguments : Object
+    {
+        public ActionArguments.from_result (ActionResult result)
+        {
+        }
+    }
+
+    public class ActionResult : Object
+    {
+        private bool _success;
+        private string _error_message;
+
+        public ActionResult.with_success ()
+        {
+            _success = true;
+            _error_message = null;
+        }
+
+        public ActionResult.with_error (string error)
+        {
+            _success = false;
+            _error_message = error;
+        }
+
+        public bool was_successful {
+            get {
+                return _success;
+            }
+        }
+
+        public string error_message {
+            get {
+                return _error_message;
+            }
+            set {
+                _error_message = value;
+            }
+        }
+    }
+
+    public class Action : Object
+    {
+        string _name;
+        ActionFunc _action_func;
+
+        public Action (string name, ActionFunc action_func)
+        {
+            _name = name;
+            _action_func = action_func;
+        }
+
+        public virtual ActionResult run (ActionArguments args)
+        {
+            if (_action_func != null) {
+                return _action_func (args);
+            }
+        }
+
+        public string name {
+            get {
+                return _name;
+            }
+        }
+    }
+}
diff --git a/src/engine/aggregate-action.vala b/src/engine/aggregate-action.vala
new file mode 100644
index 0000000..9fed729
--- /dev/null
+++ b/src/engine/aggregate-action.vala
@@ -0,0 +1,60 @@
+/* GNOME Automation Engine
+ * Copyright (C) 2006-2016 The GNOME Foundation
+ *
+ * Authors:
+ *      Rodrigo Moya (rodrigo gnome org)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this Library; see the file COPYING.  If not,
+ * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+namespace Atomato.Engine
+{
+    public class AggregateAction : Action
+    {
+        List<Action> _actions = new List<Action> ();
+
+        public AggregateAction ()
+        {
+            base ("AggregateAction");
+        }
+
+        public void add_action (Action action)
+        {
+            _actions.append (action);
+        }
+
+        public override ActionResult run (ActionArguments args)
+        {
+            ActionResult result = null;
+            ActionArguments action_args = args;
+
+            // Execute all actions in order
+            foreach (var action in _actions) {
+                stdout.printf ("Running action %s\n", action.name);
+                result = action.run (action_args);
+                if (result == null || !result.was_successful) {
+                    // If one action fails, stop
+                    stdout.printf ("Action %s failed\n", action.name);
+                    break;
+                }
+
+                action_args = new ActionArguments.from_result (result);
+            }
+
+            return result;
+        }
+    }
+}
diff --git a/src/engine/conditional-action.vala b/src/engine/conditional-action.vala
new file mode 100644
index 0000000..f375591
--- /dev/null
+++ b/src/engine/conditional-action.vala
@@ -0,0 +1,51 @@
+/* GNOME Automation Engine
+ * Copyright (C) 2006-2016 The GNOME Foundation
+ *
+ * Authors:
+ *      Rodrigo Moya (rodrigo gnome org)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this Library; see the file COPYING.  If not,
+ * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+namespace Atomato.Engine
+{
+    public delegate bool ActionConditionFunc (ActionArguments args);
+    
+    public class ConditionalAction : Action
+    {
+        ActionConditionFunc _condition_func;
+        Action _action_to_invoke;
+
+        public ConditionalAction (ActionConditionFunc condition, Action action)
+        {
+            base ("Condition");
+
+            _condition_func = condition;
+            _action_to_invoke = action;
+        }
+
+        public override ActionResult run (ActionArguments args)
+        {
+            if (_condition_func != null) {
+                if (!_condition_func (args)) {
+                    return new ActionResult ();
+                }
+            }
+
+            return _action_to_invoke.run (args);
+        }
+    }
+}
diff --git a/src/engine/loop-action.vala b/src/engine/loop-action.vala
new file mode 100644
index 0000000..8c3a5bb
--- /dev/null
+++ b/src/engine/loop-action.vala
@@ -0,0 +1,54 @@
+/* GNOME Automation Engine
+ * Copyright (C) 2006-2016 The GNOME Foundation
+ *
+ * Authors:
+ *      Rodrigo Moya (rodrigo gnome org)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this Library; see the file COPYING.  If not,
+ * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+namespace Atomato.Engine
+{
+    public class LoopAction : Action
+    {
+        ActionConditionFunc _condition_func;
+        Action _action_to_invoke;
+
+        public LoopAction (ActionConditionFunc condition, Action action)
+        {
+            base ("Loop");
+
+            _condition_func = condition;
+            _action_to_invoke = action;
+        }
+
+        public override ActionResult run (ActionArguments args)
+        {
+            ActionResult result = null;
+
+            if (_condition_func != null) {
+                while (_condition_func (args)) {
+                    result = _action_to_invoke.run (args);
+                    if (result == null) {
+                        break;
+                    }
+                }
+            }
+
+            return result;
+        }
+    }
+}
diff --git a/src/main.vala b/src/main.vala
index 04b7f0d..787fa10 100644
--- a/src/main.vala
+++ b/src/main.vala
@@ -52,7 +52,7 @@ namespace Atomato
 
                protected override int handle_local_options (GLib.VariantDict options)
                {
-                       if (options.contains("version")) {
+                       if (options.contains ("version")) {
                                print ("%s %s\n", Environment.get_application_name (), Config.VERSION);
                                return 0;
                        }