/**
 * 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/>.
 */

using Gtk;

namespace Yggtk {

    [GtkTemplate (ui = "/org/yggtk/yggtk/ui/app-window.ui")]
    public class AppWindow : ApplicationWindow {

        [GtkChild]
        private Gtk.Switch service_state_switch;

        [GtkChild]
        private Gtk.Entry peer_ip_entry;

        [GtkChild]
        private Gtk.Button save_config_button;

        [GtkCallback]
        private bool on_service_state_switch_state_set (bool state) {
            application.activate_action ("set-service-state", new Variant.boolean (state));
            return true;
        }

        [GtkCallback]
        private void on_peer_ip_entry_changed () {
            save_config_button.visible = peer_ip_entry.text.length > 0;
        }

        public void set_service_state (bool state) {
            service_state_switch.set_state (state);
        }

        public AppWindow (Gtk.Application application) {
            Object(application: application);
            var Parser = new Parser ();

            Parser.from_json (peer_ip_entry);
            string yggconfout = peer_ip_entry.text;
            save_config_button.clicked.connect (() => {
                
                if (peer_ip_entry.text != yggconfout) {
                    if (yggconfout == "") {
                        string yggconf;
                        Process.spawn_command_line_sync ("yggdrasil -genconf -json", out yggconf);
                        Parser.to_json (peer_ip_entry, yggconf);
                        
                    } else {
                        FileUtils.get_contents ("/etc/yggdrasil.conf", out yggconfout);
                        Parser.to_json (peer_ip_entry, yggconfout);
                    }
                }
            });
        }

        public class Parser : Object {
            public void to_json (Entry ip, string yggconf) {
                var node = Json.from_string (yggconf);
                var obj = node.get_object ();
                obj.set_string_member ("Peers", ip.text);
                string ptext = Json.to_string (node, true);

                FileUtils.set_contents ("/tmp/yggdrasil.conf", ptext);

                Process.spawn_command_line_sync ("pkexec cp /tmp/yggdrasil.conf /etc");
            }

            public void from_json (Entry ip) {
                string yggconfout;
                FileUtils.get_contents ("/etc/yggdrasil.conf", out yggconfout);
                var node = Json.from_string (yggconfout);
                var obj = node.get_object ();
                string ptext = obj.get_string_member ("Peers");

                if (yggconfout != null) {
                    ip.text = ptext;
                }
            }
        }
    }
}