/*
 * transmission-remote-gtk - A GTK RPC client to Transmission
 * Copyright (C) 2010  Alan Fitton

 * 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 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <glib.h>
#include <glib-object.h>
#include <gtk/gtk.h>
#include <gconf/gconf-client.h>

#include "hig.h"
#include "trg-preferences-dialog.h"
#include "trg-preferences.h"

#define TRG_PREFERENCES_DIALOG_GET_PRIVATE(object) \
        (G_TYPE_INSTANCE_GET_PRIVATE ((object), TRG_TYPE_PREFERENCES_DIALOG, TrgPreferencesDialogPrivate))

G_DEFINE_TYPE(TrgPreferencesDialog, trg_preferences_dialog,
	      GTK_TYPE_DIALOG)

enum {
    PROP_0,
    PROP_GCONF_CLIENT,
    PROP_PARENT_WINDOW
};

#define GCONF_OBJECT_KEY        "gconf-key"

struct _TrgPreferencesDialogPrivate {
    GConfClient *gconf;
    GtkWindow *parent;
};

static GObject *instance = NULL;

static void
trg_preferences_dialog_set_property(GObject * object,
				    guint prop_id,
				    const GValue * value,
				    GParamSpec * pspec)
{
    TrgPreferencesDialog *pref_dlg = TRG_PREFERENCES_DIALOG(object);

    switch (prop_id) {
    case PROP_GCONF_CLIENT:
	pref_dlg->priv->gconf = g_value_get_object(value);
	break;
    case PROP_PARENT_WINDOW:
	pref_dlg->priv->parent = g_value_get_object(value);
	break;
    }
}

static void
trg_preferences_response_cb(GtkDialog * dlg, gint res_id, gpointer data)
{
    switch (res_id) {
    default:
	gtk_widget_destroy(GTK_WIDGET(dlg));
	instance = NULL;
    }
}

static void
trg_preferences_dialog_get_property(GObject * object,
				    guint prop_id,
				    GValue * value, GParamSpec * pspec)
{
    TrgPreferencesDialog *pref_dlg = TRG_PREFERENCES_DIALOG(object);

    switch (prop_id) {
    case PROP_GCONF_CLIENT:
	g_value_set_object(value, pref_dlg->priv->gconf);
	break;
    case PROP_PARENT_WINDOW:
	g_value_set_object(value, pref_dlg->priv->parent);
	break;
    }
}

static void toggled_cb(GtkToggleButton * w, gpointer gconf)
{
    const char *key;
    gboolean flag;

    key = g_object_get_data(G_OBJECT(w), GCONF_OBJECT_KEY);
    flag = gtk_toggle_button_get_active(w);

    gconf_client_set_bool(GCONF_CLIENT(gconf), key, flag, NULL);
}

static GtkWidget *new_check_button(GConfClient * gconf,
				   const char *mnemonic, const char *key)
{
    GtkWidget *w = gtk_check_button_new_with_mnemonic(mnemonic);

    g_object_set_data_full(G_OBJECT(w), GCONF_OBJECT_KEY,
			   g_strdup(key), g_free);

    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(w),
				 gconf_client_get_bool(gconf, key, NULL));
    g_signal_connect(w, "toggled", G_CALLBACK(toggled_cb), gconf);
    return w;
}

static void spun_cb_int(GtkWidget * widget, gpointer gconf)
{
    gchar *key;

    key = g_object_get_data(G_OBJECT(widget), GCONF_OBJECT_KEY);

    gconf_client_set_int(GCONF_CLIENT(gconf),
			 key,
			 gtk_spin_button_get_value_as_int
			 (GTK_SPIN_BUTTON(widget)), NULL);
}

static GtkWidget *new_spin_button(GConfClient * gconf,
				  const char *key,
				  int low, int high, int step)
{
    GtkWidget *w;
    gint currentValue;
    GError *error = NULL;

    w = gtk_spin_button_new_with_range(low, high, step);
    g_object_set_data_full(G_OBJECT(w), GCONF_OBJECT_KEY,
			   g_strdup(key), g_free);

    gtk_spin_button_set_digits(GTK_SPIN_BUTTON(w), 0);

    currentValue = gconf_client_get_int(gconf, key, &error);

    if (error != NULL) {
	g_error_free(error);
	gtk_spin_button_set_value(GTK_SPIN_BUTTON(w), 9091);
    } else {
	gtk_spin_button_set_value(GTK_SPIN_BUTTON(w), currentValue);
    }

    g_signal_connect(w, "value-changed", G_CALLBACK(spun_cb_int), gconf);

    return w;
}

static void entry_changed_cb(GtkEntry * w, gpointer gconf)
{
    const char *key, *value;

    key = g_object_get_data(G_OBJECT(w), GCONF_OBJECT_KEY);
    value = gtk_entry_get_text(w);

    gconf_client_set_string(GCONF_CLIENT(gconf), key, value, NULL);
}

static GtkWidget *new_entry(GConfClient * gconf, const char *key)
{
    GtkWidget *w;
    const char *value;

    w = gtk_entry_new();
    value = gconf_client_get_string(gconf, key, NULL);

    if (value != NULL) {
	gtk_entry_set_text(GTK_ENTRY(w), value);
	g_free((gpointer) value);
    }

    g_object_set_data_full(G_OBJECT(w), GCONF_OBJECT_KEY,
			   g_strdup(key), g_free);

    g_signal_connect(w, "changed", G_CALLBACK(entry_changed_cb), gconf);
    return w;
}

static GtkWidget *trg_prefs_serverPage(GConfClient * gconf)
{
    GtkWidget *w, *t;
    gint row = 0;

    t = hig_workarea_create();

    hig_workarea_add_section_title(t, &row, "Server");

    w = new_entry(gconf, TRG_GCONF_KEY_HOSTNAME);
    hig_workarea_add_row(t, &row, "Host:", w, NULL);

    w = new_spin_button(gconf, TRG_GCONF_KEY_PORT, 1, 65535, 1);
    hig_workarea_add_row(t, &row, "Port:", w, NULL);

    w = new_check_button(gconf, "Automatically connect",
			 TRG_GCONF_KEY_AUTO_CONNECT);
    hig_workarea_add_wide_control(t, &row, w);

    hig_workarea_add_section_divider(t, &row);
    hig_workarea_add_section_title(t, &row, "Authentication");

    w = new_entry(gconf, TRG_GCONF_KEY_USERNAME);
    hig_workarea_add_row(t, &row, "Username:", w, NULL);

    w = new_entry(gconf, TRG_GCONF_KEY_PASSWORD);
    gtk_entry_set_visibility(GTK_ENTRY(w), FALSE);
    hig_workarea_add_row(t, &row, "Password:", w, NULL);

    return t;
}

static GObject *trg_preferences_dialog_constructor(GType type,
						   guint
						   n_construct_properties,
						   GObjectConstructParam *
						   construct_params)
{
    GObject *object;
    TrgPreferencesDialogPrivate *priv;
    GtkWidget *notebook;

    object =
	G_OBJECT_CLASS
	(trg_preferences_dialog_parent_class)->constructor(type,
							   n_construct_properties,
							   construct_params);
    priv = TRG_PREFERENCES_DIALOG_GET_PRIVATE(object);

    gtk_window_set_transient_for(GTK_WINDOW(object), priv->parent);
    gtk_window_set_destroy_with_parent(GTK_WINDOW(object), TRUE);
    gtk_dialog_add_button(GTK_DIALOG(object), GTK_STOCK_CLOSE,
			  GTK_RESPONSE_CLOSE);
    gtk_window_set_title(GTK_WINDOW(object), "Local Preferences");
    gtk_container_set_border_width(GTK_CONTAINER(object), GUI_PAD);

    g_signal_connect(G_OBJECT(object),
		     "response",
		     G_CALLBACK(trg_preferences_response_cb), NULL);

    notebook = gtk_notebook_new();

    gtk_notebook_append_page(GTK_NOTEBOOK(notebook),
			     trg_prefs_serverPage(priv->gconf),
			     gtk_label_new("Connection"));

    gtk_container_set_border_width(GTK_CONTAINER(notebook), GUI_PAD);

    gtk_box_pack_start(GTK_BOX(GTK_DIALOG(object)->vbox), notebook,
		       TRUE, TRUE, 0);

    gtk_widget_show_all(GTK_DIALOG(object)->vbox);

    return object;
}

static void
trg_preferences_dialog_class_init(TrgPreferencesDialogClass * class)
{
    GObjectClass *g_object_class = (GObjectClass *) class;

    g_object_class->constructor = trg_preferences_dialog_constructor;
    g_object_class->set_property = trg_preferences_dialog_set_property;
    g_object_class->get_property = trg_preferences_dialog_get_property;

    g_object_class_install_property(g_object_class,
				    PROP_GCONF_CLIENT,
				    g_param_spec_object("gconf-client",
							"GConf Client",
							"GConf Client",
							GCONF_TYPE_CLIENT,
							G_PARAM_READWRITE
							|
							G_PARAM_CONSTRUCT_ONLY
							|
							G_PARAM_STATIC_NAME
							|
							G_PARAM_STATIC_NICK
							|
							G_PARAM_STATIC_BLURB));

    g_object_class_install_property(g_object_class,
				    PROP_PARENT_WINDOW,
				    g_param_spec_object
				    ("parent-window", "Parent window",
				     "Parent window", GTK_TYPE_WINDOW,
				     G_PARAM_READWRITE |
				     G_PARAM_CONSTRUCT_ONLY |
				     G_PARAM_STATIC_NAME |
				     G_PARAM_STATIC_NICK |
				     G_PARAM_STATIC_BLURB));

    g_type_class_add_private(g_object_class,
			     sizeof(TrgPreferencesDialogPrivate));
}

static void trg_preferences_dialog_init(TrgPreferencesDialog * pref_dlg)
{
    pref_dlg->priv = TRG_PREFERENCES_DIALOG_GET_PRIVATE(pref_dlg);

    pref_dlg->priv->gconf = NULL;
}

GtkWidget *trg_preferences_dialog_get_instance(GtkWindow * parent,
					       GConfClient * client)
{
    if (instance == NULL) {
	instance = g_object_new(TRG_TYPE_PREFERENCES_DIALOG,
				"parent-window", parent,
				"gconf-client", client, NULL);
    }

    return GTK_WIDGET(instance);
}