add YggdrasilService interface and implementors

src/application.vala

@@ -19,14 +19,30 @@ namespace Yggtk {
 
     public class Application : Gtk.Application {
 
+		private YggdrasilService yggdrasil_service = null;
+
         public Application () {
             Object (
                 application_id: "org.yggtk.yggtk",
                 flags: ApplicationFlags.FLAGS_NONE
             );
+            init_yggdrasil_service ();
             add_actions ();
         }
 
+        private void init_yggdrasil_service () {
+            if (Utils.is_command_available ("rc-service")) {
+                stdout.printf ("Found OpenRC init system\n");
+                yggdrasil_service = new YggdrasilServiceOpenRC ();
+            } else if (Utils.is_command_available ("systemctl")) {
+                stdout.printf ("Found Systemd init system\n");
+                yggdrasil_service = new YggdrasilServiceSystemd ();
+            } else {
+                stderr.printf ("Unable to determine init system");
+                Gtk.main_quit ();
+            }
+        }
+ 
         private void add_actions () {
             SimpleAction update_yggtk_action = new SimpleAction ("update-yggtk", null);
             update_yggtk_action.activate.connect (update_yggtk);

src/meson.build

@@ -2,6 +2,9 @@ yggtk_sources = [
   'application.vala',
   'app-window.vala',
   'utils.vala',
+  'yggdrasil-service.vala',
+  'yggdrasil-service-openrc.vala',
+  'yggdrasil-service-systemd.vala',
 ]
 
 yggtk = executable(

src/utils.vala

@@ -13,14 +13,26 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-namespace Utils {
+namespace Yggtk.Utils {
 
-    string mktempdir () throws Error {
+    public bool is_command_available (string command) {
+        try {
+            string cmd_stdout, cmd_stderr;
+            int cmd_status = -1;
+            Process.spawn_command_line_sync (@"which $command", out cmd_stdout, out cmd_stderr, out cmd_status);
+            if (cmd_status == 0 && cmd_stderr.length == 0 && cmd_stdout.length > 0) {
+                return true;
+            }
+        } catch (SpawnError e) {
+            return false;
+        }
+        return false;
+    }
 
+    public string mktempdir () throws SpawnError {
         string temp_dir = null;
         Process.spawn_command_line_sync ("mktemp -d", out temp_dir);
         return temp_dir.strip ();
-
     }
 
 }

src/yggdrasil-service-openrc.vala

@@ -0,0 +1,30 @@
+/**
+ * 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 3 of the License, or
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace Yggtk {
+
+	public class YggdrasilServiceOpenRC : Object, YggdrasilService {
+
+		public bool get_status () {
+			return false;
+		}
+
+		public void start () {}
+
+		public void stop () {}
+		
+	}
+	
+}

src/yggdrasil-service-systemd.vala

@@ -0,0 +1,30 @@
+/**
+ * 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 3 of the License, or
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace Yggtk {
+
+	public class YggdrasilServiceSystemd : Object, YggdrasilService {
+
+		public bool get_status () {
+			return false;
+		}
+
+		public void start () {}
+
+		public void stop () {}
+		
+	}
+	
+}

src/yggdrasil-service.vala

@@ -0,0 +1,26 @@
+/**
+ * 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 3 of the License, or
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace Yggtk {
+
+    public interface YggdrasilService : Object {
+
+        public abstract bool get_status ();
+        public abstract void start ();
+        public abstract void stop ();
+        
+    }
+
+}