/* mate-network-properties.c: network preferences capplet
 *
 * Copyright (C) 2002 Sun Microsystems Inc.
 *               2012 Stefano Karapetsas
 *
 * Written by: Mark McLoughlin <mark@skynet.ie>
 *             Stefano Karapetsas <stefano@karapetsas.com>
 *
 * 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, 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <stdlib.h>
#include <string.h>
#include <gio/gio.h>
#include <glib/gi18n.h>

#include "capplet-util.h"

/* With GSettings migration, MATE is going to share proxy settings with
 * GNOME3 (in gsettings-desktop-schemas package).
 * GSettings schemas is http://git.gnome.org/browse/gsettings-desktop-schemas/tree/
 * schemas/org.gnome.system.proxy.gschema.xml.in.in
 * Sharing the same schema, we lose the locations feature.
 */

/*
 * use enum from gsettings-desktop-schema
 * http://git.gnome.org/browse/gsettings-desktop-schemas/tree/headers/gdesktop-enums.h#n26
 */
enum GDesktopProxyMode
{
	G_DESKTOP_PROXY_MODE_NONE,
	G_DESKTOP_PROXY_MODE_MANUAL,
	G_DESKTOP_PROXY_MODE_AUTO
};

enum {
	COL_NAME,
	COL_STYLE
};

#define PROXY_SCHEMA              "org.gnome.system.proxy"
#define PROXY_MODE_KEY            "mode"
#define PROXY_AUTOCONFIG_URL_KEY  "autoconfig-url"
#define IGNORE_HOSTS_KEY          "ignore-hosts"

#define HTTP_PROXY_SCHEMA         "org.gnome.system.proxy.http"
#define HTTP_PROXY_HOST_KEY       "host"
#define HTTP_PROXY_PORT_KEY       "port"
#define HTTP_USE_AUTH_KEY         "use-authentication"
#define HTTP_AUTH_USER_KEY        "authentication-user"
#define HTTP_AUTH_PASSWD_KEY      "authentication-password"

#define HTTPS_PROXY_SCHEMA        "org.gnome.system.proxy.https"
#define SECURE_PROXY_HOST_KEY     "host"
#define SECURE_PROXY_PORT_KEY     "port"

#define FTP_PROXY_SCHEMA          "org.gnome.system.proxy.ftp"
#define FTP_PROXY_HOST_KEY        "host"
#define FTP_PROXY_PORT_KEY        "port"

#define SOCKS_PROXY_SCHEMA        "org.gnome.system.proxy.socks"
#define SOCKS_PROXY_HOST_KEY      "host"
#define SOCKS_PROXY_PORT_KEY      "port"

static GtkWidget *details_dialog = NULL;
static GSList *ignore_hosts = NULL;
static GtkTreeModel *model = NULL;

static GSettings *proxy_settings = NULL;
static GSettings *http_proxy_settings = NULL;
static GSettings *https_proxy_settings = NULL;
static GSettings *ftp_proxy_settings = NULL;
static GSettings *socks_proxy_settings = NULL;

static GtkTreeModel *
create_listmodel(void)
{
	GtkListStore *store;

	store = gtk_list_store_new(1, G_TYPE_STRING);

	return GTK_TREE_MODEL(store);
}

static GtkTreeModel *
populate_listmodel(GtkListStore *store, GSList *list)
{
	GtkTreeIter iter;
	GSList *pointer;

	gtk_list_store_clear(store);

	pointer = list;
	while(pointer)
	{
		gtk_list_store_append(store, &iter);
		gtk_list_store_set(store, &iter, 0, (char *) pointer->data, -1);
		pointer = g_slist_next(pointer);
	}

	return GTK_TREE_MODEL(store);
}

static GtkWidget *
config_treeview(GtkTreeView *tree, GtkTreeModel *model)
{
	GtkCellRenderer *renderer;

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(tree),
												-1, "Hosts", renderer,
												"text", 0, NULL);

	gtk_tree_view_set_model(GTK_TREE_VIEW(tree), model);

	return GTK_WIDGET(tree);
}

static GtkWidget*
_gtk_builder_get_widget (GtkBuilder *builder, const gchar *name)
{
	return GTK_WIDGET (gtk_builder_get_object (builder, name));
}

static void
read_ignore_hosts_from_gsettings (void)
{
	gchar **array;
	ignore_hosts = NULL;
	gint i;
	array = g_settings_get_strv (proxy_settings, IGNORE_HOSTS_KEY);
	if (array != NULL)
	{
		for (i = 0; array[i]; i++)
		{
			ignore_hosts = g_slist_append (ignore_hosts, g_strdup (array[i]));
		}
	}
	g_strfreev (array);
}

static void
save_ignore_hosts_to_gsettings (void)
{
	GArray *array;
	GSList *l;
	array = g_array_new (TRUE, TRUE, sizeof (gchar *));
	for (l = ignore_hosts; l; l = l->next) {
		array = g_array_append_val (array, l->data);
	}
	g_settings_set_strv (proxy_settings, IGNORE_HOSTS_KEY, (const gchar **) array->data);
	g_array_free (array, TRUE);
}

static void
cb_add_url (GtkButton *button, gpointer data)
{
	GtkBuilder *builder = GTK_BUILDER (data);

	const gchar *entry_text = gtk_entry_get_text (GTK_ENTRY (gtk_builder_get_object (builder, "entry_url")));
	if (entry_text == NULL || strlen (entry_text) == 0) {
		return;
	}

	ignore_hosts = g_slist_append(ignore_hosts, g_strdup (entry_text));
	populate_listmodel(GTK_LIST_STORE(model), ignore_hosts);
	gtk_entry_set_text(GTK_ENTRY (gtk_builder_get_object (builder,
							     "entry_url")), "");

	save_ignore_hosts_to_gsettings ();
}

static void
cb_remove_url (GtkButton *button, gpointer data)
{
	GtkBuilder *builder = GTK_BUILDER (data);
	GtkTreeSelection *selection;
	GtkTreeIter       iter;

	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (gtk_builder_get_object (builder, "treeview_ignore_host")));
	if (gtk_tree_selection_get_selected(selection, &model, &iter))
	{
		gchar *url;
		GSList *pointer;

		gtk_tree_model_get (model, &iter, 0, &url, -1);

		pointer = ignore_hosts;
		while(pointer)
		{
			if(strcmp(url, (char *) pointer->data) == 0)
			{
				g_free (pointer->data);
				ignore_hosts = g_slist_delete_link(ignore_hosts, pointer);
				break;
			}
			pointer = g_slist_next(pointer);
		}

		g_free(url);
		populate_listmodel(GTK_LIST_STORE(model), ignore_hosts);

		save_ignore_hosts_to_gsettings ();
	}
}

static void
cb_dialog_response (GtkDialog *dialog, gint response_id)
{
	if (response_id == GTK_RESPONSE_HELP)
		capplet_help (GTK_WINDOW (dialog),
			"goscustdesk-50");
	else if (response_id == GTK_RESPONSE_CLOSE || response_id == GTK_RESPONSE_DELETE_EVENT)
	{
		if (ignore_hosts) {
			g_slist_foreach (ignore_hosts, (GFunc) g_free, NULL);
			g_slist_free (ignore_hosts);
		}

		gtk_main_quit ();
	}
}

static void
cb_details_dialog_response (GtkDialog *dialog, gint response_id)
{
	if (response_id == GTK_RESPONSE_HELP)
		capplet_help (GTK_WINDOW (dialog),
			      "goscustdesk-50");
	else {
		gtk_widget_destroy (GTK_WIDGET (dialog));
		details_dialog = NULL;
	}
}

static void
cb_use_auth_toggled (GtkToggleButton *toggle,
		     GtkWidget *table)
{
	gtk_widget_set_sensitive (table, gtk_toggle_button_get_active (toggle));
}

static void
cb_http_details_button_clicked (GtkWidget *button,
			        GtkWidget *parent)
{
	GtkBuilder *builder;
	gchar *builder_widgets[] = { "details_dialog", NULL };
	GError *error = NULL;
	GtkWidget *widget;

	if (details_dialog != NULL) {
		gtk_window_present (GTK_WINDOW (details_dialog));
		gtk_widget_grab_focus (details_dialog);
		return;
	}

	builder = gtk_builder_new ();
	if (gtk_builder_add_objects_from_resource (builder, "/org/mate/mcc/network/mate-network-properties.ui",
					           builder_widgets, &error) == 0) {
		g_warning ("Could not load details dialog: %s", error->message);
		g_error_free (error);
		g_object_unref (builder);
		return;
	}

	details_dialog = widget = _gtk_builder_get_widget (builder,
							   "details_dialog");

	gtk_window_set_transient_for (GTK_WINDOW (widget), GTK_WINDOW (parent));

	g_signal_connect (gtk_builder_get_object (builder, "use_auth_checkbutton"),
			  "toggled",
			  G_CALLBACK (cb_use_auth_toggled),
			  _gtk_builder_get_widget (builder, "auth_table"));

	g_settings_bind (http_proxy_settings, HTTP_USE_AUTH_KEY,
			gtk_builder_get_object (builder, "use_auth_checkbutton"), "active",
			G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (http_proxy_settings, HTTP_AUTH_USER_KEY,
			gtk_builder_get_object (builder, "username_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (http_proxy_settings, HTTP_AUTH_PASSWD_KEY,
			gtk_builder_get_object (builder, "password_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);

	g_signal_connect (widget, "response",
			  G_CALLBACK (cb_details_dialog_response), NULL);

	capplet_set_icon (widget, "network-server");

	gtk_widget_show_all (widget);
}

static void
proxy_mode_gsettings_changed (GSettings *settings,
				   gchar *key,
				   GtkBuilder *builder)
{
	int mode;
	mode = g_settings_get_enum (settings, PROXY_MODE_KEY);
	if (mode == G_DESKTOP_PROXY_MODE_NONE)
		gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (gtk_builder_get_object(builder, "none_radiobutton")), TRUE);
	else if (mode == G_DESKTOP_PROXY_MODE_AUTO)
		gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (gtk_builder_get_object(builder, "auto_radiobutton")), TRUE);
	else if (mode == G_DESKTOP_PROXY_MODE_MANUAL)
		gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (gtk_builder_get_object(builder, "manual_radiobutton")), TRUE);
	gtk_widget_set_sensitive (_gtk_builder_get_widget (builder, "manual_box"),
				  mode == G_DESKTOP_PROXY_MODE_MANUAL);
	gtk_widget_set_sensitive (_gtk_builder_get_widget (builder, "auto_box"),
				  mode == G_DESKTOP_PROXY_MODE_AUTO);
}

static void
proxy_mode_radiobutton_clicked_cb (GtkWidget *widget,
				   GtkBuilder *builder)
{
	GSList *mode_group;
	int mode;
	int old_mode;

	if (!gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON(widget)))
		return;

	mode_group = g_slist_copy (gtk_radio_button_get_group
		(GTK_RADIO_BUTTON (gtk_builder_get_object (builder, "none_radiobutton"))));
	mode_group = g_slist_reverse (mode_group);
	mode = g_slist_index (mode_group, widget);
	g_slist_free (mode_group);

	old_mode = g_settings_get_enum (proxy_settings, PROXY_MODE_KEY);

	if (mode == old_mode)
		return;

	g_settings_set_enum (proxy_settings, PROXY_MODE_KEY, mode);
}

static void
connect_sensitivity_signals (GtkBuilder *builder, GSList *mode_group)
{
	for (; mode_group != NULL; mode_group = mode_group->next)
	{
		g_signal_connect (G_OBJECT (mode_group->data), "clicked",
				  G_CALLBACK(proxy_mode_radiobutton_clicked_cb),
				  builder);
	}
}

static void
cb_ignore_hosts_gsettings_changed (GSettings *settings, gchar *key, gpointer user_data)
{
	g_slist_foreach (ignore_hosts, (GFunc) g_free, NULL);
	g_slist_free (ignore_hosts);

	read_ignore_hosts_from_gsettings ();

	populate_listmodel (GTK_LIST_STORE (model), ignore_hosts);
}

static void
setup_dialog (GtkBuilder *builder)
{
	GSList *mode_group;

	g_signal_connect (proxy_settings, "changed::" IGNORE_HOSTS_KEY,
			G_CALLBACK (cb_ignore_hosts_gsettings_changed), NULL);

	/* Mode */
	proxy_mode_gsettings_changed (proxy_settings, PROXY_MODE_KEY, builder);
	mode_group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (gtk_builder_get_object (builder, "none_radiobutton")));
	connect_sensitivity_signals (builder, mode_group);
	g_signal_connect (proxy_settings, "changed::" PROXY_MODE_KEY,
					  G_CALLBACK (proxy_mode_gsettings_changed), builder);

	/* Http */
	g_settings_bind (http_proxy_settings, HTTP_PROXY_PORT_KEY,
			gtk_builder_get_object (builder, "http_port_spinbutton"), "value",
			G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (http_proxy_settings, HTTP_PROXY_HOST_KEY,
			gtk_builder_get_object (builder, "http_host_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);
	g_signal_connect (gtk_builder_get_object (builder, "details_button"),
			  "clicked",
			  G_CALLBACK (cb_http_details_button_clicked),
			  _gtk_builder_get_widget (builder, "network_dialog"));

	/* Secure */
	g_settings_bind (https_proxy_settings, SECURE_PROXY_PORT_KEY,
			gtk_builder_get_object (builder, "secure_port_spinbutton"), "value",
			G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (https_proxy_settings, SECURE_PROXY_HOST_KEY,
			gtk_builder_get_object (builder, "secure_host_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);

	/* Ftp */
	g_settings_bind (ftp_proxy_settings, FTP_PROXY_PORT_KEY,
			gtk_builder_get_object (builder, "ftp_port_spinbutton"), "value",
			G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (ftp_proxy_settings, FTP_PROXY_HOST_KEY,
			gtk_builder_get_object (builder, "ftp_host_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);

	/* Socks */
	g_settings_bind (socks_proxy_settings, SOCKS_PROXY_PORT_KEY,
			gtk_builder_get_object (builder, "socks_port_spinbutton"), "value",
			G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (socks_proxy_settings, SOCKS_PROXY_HOST_KEY,
			gtk_builder_get_object (builder, "socks_host_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);

	/* Autoconfiguration */
	g_settings_bind (proxy_settings, PROXY_AUTOCONFIG_URL_KEY,
			gtk_builder_get_object (builder, "autoconfig_entry"), "text",
			G_SETTINGS_BIND_DEFAULT);

	g_signal_connect (gtk_builder_get_object (builder, "network_dialog"),
			"response", G_CALLBACK (cb_dialog_response), NULL);

	read_ignore_hosts_from_gsettings ();

	model = create_listmodel();
	populate_listmodel(GTK_LIST_STORE(model), ignore_hosts);
	config_treeview(GTK_TREE_VIEW(gtk_builder_get_object (builder, "treeview_ignore_host")), model);

	g_signal_connect (gtk_builder_get_object (builder, "button_add_url"),
			  "clicked", G_CALLBACK (cb_add_url), builder);
	g_signal_connect (gtk_builder_get_object (builder, "entry_url"),
			  "activate", G_CALLBACK (cb_add_url), builder);
	g_signal_connect (gtk_builder_get_object (builder, "button_remove_url"),
			  "clicked", G_CALLBACK (cb_remove_url), builder);
}

int
main (int argc, char **argv)
{
	GtkBuilder  *builder;
	GError *error = NULL;
	gchar *builder_widgets[] = {"network_dialog", "adjustment1",
				    "adjustment2", "adjustment3", "adjustment4",
				    "delete_button_img", NULL};
	GtkWidget   *widget;

	capplet_init (NULL, &argc, &argv);

	builder = gtk_builder_new ();
	if (gtk_builder_add_objects_from_resource (builder, "/org/mate/mcc/network/mate-network-properties.ui",
					           builder_widgets, &error) == 0) {
		g_warning ("Could not load main dialog: %s",
			   error->message);
		g_error_free (error);
		g_object_unref (builder);
		return (EXIT_FAILURE);
	}

	proxy_settings = g_settings_new (PROXY_SCHEMA);
	http_proxy_settings = g_settings_new (HTTP_PROXY_SCHEMA);
	https_proxy_settings = g_settings_new (HTTPS_PROXY_SCHEMA);
	ftp_proxy_settings = g_settings_new (FTP_PROXY_SCHEMA);
	socks_proxy_settings = g_settings_new (SOCKS_PROXY_SCHEMA);

	setup_dialog (builder);
	widget = _gtk_builder_get_widget (builder, "network_dialog");
	capplet_set_icon (widget, "network-server");
	gtk_widget_show_all (widget);
	gtk_main ();

	g_object_unref (builder);
	g_object_unref (proxy_settings);
	g_object_unref (http_proxy_settings);
	g_object_unref (https_proxy_settings);
	g_object_unref (ftp_proxy_settings);
	g_object_unref (socks_proxy_settings);

	return 0;
}