/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007-2008 Collabora Ltd.
 *
 * 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 St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 *
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <stdlib.h>
#include <errno.h>
#include <string.h>

#include <glib.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <unique/unique.h>

#if HAVE_LIBCHAMPLAIN
#include <clutter-gtk/gtk-clutter-embed.h>
#endif

#include <libebook/e-book.h>
#include <libnotify/notify.h>

#include <telepathy-glib/dbus.h>
#include <telepathy-glib/util.h>
#include <telepathy-glib/connection-manager.h>
#include <telepathy-glib/interfaces.h>

#include <libempathy/empathy-idle.h>
#include <libempathy/empathy-utils.h>
#include <libempathy/empathy-call-factory.h>
#include <libempathy/empathy-chatroom-manager.h>
#include <libempathy/empathy-account-settings.h>
#include <libempathy/empathy-account-manager.h>
#include <libempathy/empathy-connection-managers.h>
#include <libempathy/empathy-debugger.h>
#include <libempathy/empathy-dispatcher.h>
#include <libempathy/empathy-dispatch-operation.h>
#include <libempathy/empathy-log-manager.h>
#include <libempathy/empathy-ft-factory.h>
#include <libempathy/empathy-tp-chat.h>
#include <libempathy/empathy-tp-call.h>

#include <libempathy-gtk/empathy-conf.h>
#include <libempathy-gtk/empathy-ui-utils.h>
#include <libempathy-gtk/empathy-location-manager.h>

#include "empathy-accounts-dialog.h"
#include "empathy-main-window.h"
#include "empathy-status-icon.h"
#include "empathy-call-window.h"
#include "empathy-chat-window.h"
#include "empathy-ft-manager.h"

#include "extensions/extensions.h"

#define DEBUG_FLAG EMPATHY_DEBUG_OTHER
#include <libempathy/empathy-debug.h>

#include <gst/gst.h>

#define COMMAND_ACCOUNTS_DIALOG 1

static void
dispatch_cb (EmpathyDispatcher *dispatcher,
	     EmpathyDispatchOperation *operation,
	     gpointer           user_data)
{
	GQuark channel_type;

	channel_type = empathy_dispatch_operation_get_channel_type_id (operation);

	if (channel_type == TP_IFACE_QUARK_CHANNEL_TYPE_TEXT) {
		EmpathyTpChat *tp_chat;
		EmpathyChat   *chat = NULL;
		const gchar   *id;

		tp_chat = EMPATHY_TP_CHAT (
			empathy_dispatch_operation_get_channel_wrapper (operation));

		id = empathy_tp_chat_get_id (tp_chat);
		if (!id) {
			EmpathyContact *contact;

			contact = empathy_tp_chat_get_remote_contact (tp_chat);
			if (contact) {
				id = empathy_contact_get_id (contact);
			}
		}

		if (id) {
			EmpathyAccountManager *manager;
			TpConnection *connection;
			EmpathyAccount *account;

			manager = empathy_account_manager_dup_singleton ();
			connection = empathy_tp_chat_get_connection (tp_chat);
			account = empathy_account_manager_get_account_for_connection (manager,
								       connection);
			chat = empathy_chat_window_find_chat (account, id);
			g_object_unref (manager);
		}

		if (chat) {
			empathy_chat_set_tp_chat (chat, tp_chat);
		} else {
			chat = empathy_chat_new (tp_chat);
		}

		empathy_chat_window_present_chat (chat);

		empathy_dispatch_operation_claim (operation);
	} else if (channel_type == TP_IFACE_QUARK_CHANNEL_TYPE_STREAMED_MEDIA) {
		EmpathyCallFactory *factory;

		factory = empathy_call_factory_get ();
		empathy_call_factory_claim_channel (factory, operation);
	} else if (channel_type == TP_IFACE_QUARK_CHANNEL_TYPE_FILE_TRANSFER) {
		EmpathyFTFactory *factory;

		factory = empathy_ft_factory_dup_singleton ();

		/* if the operation is not incoming, don't claim it,
		 * as it might have been triggered by another client, and
		 * we are observing it.
		 */
		if (empathy_dispatch_operation_is_incoming (operation)) {
			empathy_ft_factory_claim_channel (factory, operation);
		}
	}
}

static void
use_nm_notify_cb (EmpathyConf *conf,
		  const gchar *key,
		  gpointer     user_data)
{
	EmpathyIdle *idle = user_data;
	gboolean     use_nm;

	if (empathy_conf_get_bool (conf, key, &use_nm)) {
		empathy_idle_set_use_nm (idle, use_nm);
	}
}

/* Salut account creation */
static gboolean
should_create_salut_account (void)
{
	EmpathyAccountManager *manager;
	gboolean salut_created = FALSE;
	GList *accounts, *l;

	/* Check if we already created a salut account */
	empathy_conf_get_bool (empathy_conf_get (),
			       EMPATHY_PREFS_SALUT_ACCOUNT_CREATED,
			       &salut_created);

	if (salut_created)
		{
			DEBUG ("Gconf says we already created a salut account once");
			return FALSE;
		}

	manager = empathy_account_manager_dup_singleton ();
	accounts = empathy_account_manager_dup_accounts (manager);

	for (l = accounts; l != NULL;  l = g_list_next (l)) {
		EmpathyAccount *account = EMPATHY_ACCOUNT (l->data);

		if (!tp_strdiff (empathy_account_get_protocol (account), "local-xmpp"))
			salut_created = TRUE;

		g_object_unref (account);
	}

	g_object_unref (manager);

	if (salut_created)
		{
			DEBUG ("Existing salut account already exists, flagging so in gconf");
			empathy_conf_set_bool (empathy_conf_get (),
				EMPATHY_PREFS_SALUT_ACCOUNT_CREATED,
				TRUE);
		}

	return !salut_created;
}

static void
salut_account_created (GObject *source,
	GAsyncResult *result, gpointer user_data)
{
	EmpathyAccountSettings *settings = EMPATHY_ACCOUNT_SETTINGS (source);
	EmpathyAccount *account;
	GError *error = NULL;

	if (!empathy_account_settings_apply_finish (settings, result, &error))
		{
			DEBUG ("Failed to create salut account: %s", error->message);
			g_error_free (error);
			return;
		}

	account = empathy_account_settings_get_account (settings);

	empathy_account_set_enabled (account, TRUE);
	empathy_conf_set_bool (empathy_conf_get (),
			       EMPATHY_PREFS_SALUT_ACCOUNT_CREATED,
			       TRUE);
}

static void
create_salut_account_if_needed (EmpathyConnectionManagers *managers)
{
	EmpathyAccountSettings  *settings;
	TpConnectionManager *manager;
	const TpConnectionManagerProtocol *protocol;
	EBook      *book;
	EContact   *contact;
	gchar      *nickname = NULL;
	gchar      *first_name = NULL;
	gchar      *last_name = NULL;
	gchar      *email = NULL;
	gchar      *jid = NULL;
	GError     *error = NULL;


	if (!should_create_salut_account ())
		return;

	manager = empathy_connection_managers_get_cm (managers, "salut");
	if (manager == NULL)
		{
			DEBUG ("Salut not installed, not making a salut account");
			return;
		}

	protocol = tp_connection_manager_get_protocol (manager, "local-xmpp");
	if (protocol == NULL)
		{
			DEBUG ("Salut doesn't support local-xmpp!!");
			return;
		}

	DEBUG ("Trying to add a salut account...");

	/* Get self EContact from EDS */
	if (!e_book_get_self (&contact, &book, &error)) {
		DEBUG ("Failed to get self econtact: %s",
			error ? error->message : "No error given");
		g_clear_error (&error);
		return;
	}

	settings = empathy_account_settings_new ("salut", "local-xmpp",
		_("People nearby"));

	nickname = e_contact_get (contact, E_CONTACT_NICKNAME);
	first_name = e_contact_get (contact, E_CONTACT_GIVEN_NAME);
	last_name = e_contact_get (contact, E_CONTACT_FAMILY_NAME);
	email = e_contact_get (contact, E_CONTACT_EMAIL_1);
	jid = e_contact_get (contact, E_CONTACT_IM_JABBER_HOME_1);

	if (!tp_strdiff (nickname, "nickname")) {
		g_free (nickname);
		nickname = NULL;
	}

	DEBUG ("Salut account created:\nnickname=%s\nfirst-name=%s\n"
		"last-name=%s\nemail=%s\njid=%s\n",
		nickname, first_name, last_name, email, jid);

	empathy_account_settings_set_string (settings, "nickname", nickname ? nickname : "");
	empathy_account_settings_set_string (settings, "first-name", first_name ? first_name : "");
	empathy_account_settings_set_string (settings, "last-name", last_name ? last_name : "");
	empathy_account_settings_set_string (settings, "email", email ? email : "");
	empathy_account_settings_set_string (settings, "jid", jid ? jid : "");

	empathy_account_settings_apply_async (settings,
		salut_account_created, NULL);

	g_free (nickname);
	g_free (first_name);
	g_free (last_name);
	g_free (email);
	g_free (jid);
	g_object_unref (settings);
	g_object_unref (contact);
	g_object_unref (book);
}

static void
connection_managers_ready_cb (EmpathyConnectionManagers *managers,
	GParamSpec *spec, gpointer user_data)
{
	if (empathy_connection_managers_is_ready (managers))
		{
			create_salut_account_if_needed (managers);
			g_object_unref (managers);
			managers = NULL;
		}
}

static void
create_salut_account (void)
{
	EmpathyConnectionManagers *managers;

	if (!should_create_salut_account ())
		return;

	managers = empathy_connection_managers_dup_singleton ();

	if (empathy_connection_managers_is_ready (managers))
		{
			create_salut_account_if_needed (managers);
			g_object_unref (managers);
		}
	else
		{
			g_signal_connect (managers, "notify::ready",
				G_CALLBACK (connection_managers_ready_cb), NULL);
		}
}

static void
migrate_config_to_xdg_dir (void)
{
	gchar *xdg_dir, *old_dir, *xdg_filename, *old_filename;
	int i;
	GFile *xdg_file, *old_file;
	static const gchar* filenames[] = {
		"geometry.ini",
		"irc-networks.xml",
		"chatrooms.xml",
		"contact-groups.xml",
		"status-presets.xml",
		"accels.txt",
		NULL
	};

	xdg_dir = g_build_filename (g_get_user_config_dir (), PACKAGE_NAME, NULL);
	if (g_file_test (xdg_dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
		/* xdg config dir already exists */
		g_free (xdg_dir);
		return;
	}

	old_dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
	if (!g_file_test (old_dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR)) {
		/* old config dir didn't exist */
		g_free (xdg_dir);
		g_free (old_dir);
		return;
	}

	if (g_mkdir_with_parents (xdg_dir, (S_IRUSR | S_IWUSR | S_IXUSR)) == -1) {
		DEBUG ("Failed to create configuration directory; aborting migration");
		g_free (xdg_dir);
		g_free (old_dir);
		return;
	}

	for (i = 0; filenames[i]; i++) {
		old_filename = g_build_filename (old_dir, filenames[i], NULL);
		if (!g_file_test (old_filename, G_FILE_TEST_EXISTS)) {
			g_free (old_filename);
			continue;
		}
		xdg_filename = g_build_filename (xdg_dir, filenames[i], NULL);
		old_file = g_file_new_for_path (old_filename);
		xdg_file = g_file_new_for_path (xdg_filename);
		if (!g_file_move (old_file, xdg_file, G_FILE_COPY_NONE,
				  NULL, NULL, NULL, NULL)) {
			DEBUG ("Failed to migrate %s", filenames[i]);
		}
		g_free (old_filename);
		g_free (xdg_filename);
		g_object_unref (old_file);
		g_object_unref (xdg_file);
	}

	g_free (xdg_dir);
	g_free (old_dir);
}

static UniqueResponse
unique_app_message_cb (UniqueApp *unique_app,
                       gint command,
                       UniqueMessageData *data,
                       guint timestamp,
                       gpointer user_data)
{
	GtkWidget *window = user_data;

	DEBUG ("Other instance launched, presenting the main window. "
	       "Command=%d, timestamp %u", command, timestamp);

	if (command == COMMAND_ACCOUNTS_DIALOG) {
		empathy_accounts_dialog_show (GTK_WINDOW (window), NULL);
	} else {
		gtk_window_set_screen (GTK_WINDOW (window),
		                       unique_message_data_get_screen (data));
		gtk_window_set_startup_id (GTK_WINDOW (window),
		                           unique_message_data_get_startup_id (data));
		gtk_window_present_with_time (GTK_WINDOW (window), timestamp);
	}

	return UNIQUE_RESPONSE_OK;
}

static gboolean
show_version_cb (const char *option_name,
                 const char *value,
                 gpointer data,
                 GError **error)
{
	g_print ("%s\n", PACKAGE_STRING);

	exit (EXIT_SUCCESS);

	return FALSE;
}

static void
new_incoming_transfer_cb (EmpathyFTFactory *factory,
			  EmpathyFTHandler *handler,
                          GError *error,
			  gpointer user_data)
{
	if (error) {
		empathy_ft_manager_display_error (handler, error);
	} else {
		empathy_receive_file_with_file_chooser (handler);
	}
}

static void
new_ft_handler_cb (EmpathyFTFactory *factory,
		   EmpathyFTHandler *handler,
                   GError *error,
		   gpointer user_data)
{
	if (error) {
		empathy_ft_manager_display_error (handler, error);
	} else {
		empathy_ft_manager_add_handler (handler);
	}

	g_object_unref (handler);
}

static void
new_call_handler_cb (EmpathyCallFactory *factory, EmpathyCallHandler *handler,
	gboolean outgoing, gpointer user_data)
{
	EmpathyCallWindow *window;

	window = empathy_call_window_new (handler);
	gtk_widget_show (GTK_WIDGET (window));
}

#ifdef ENABLE_DEBUG
static void
default_log_handler (const gchar *log_domain,
    GLogLevelFlags log_level,
    const gchar *message,
    gpointer user_data)
{
	g_log_default_handler (log_domain, log_level, message, NULL);

	/* G_LOG_DOMAIN = "empathy". No need to send empathy messages to the
	 * debugger as they already have in empathy_debug. */
	if (log_level != G_LOG_LEVEL_DEBUG
	    || tp_strdiff (log_domain, G_LOG_DOMAIN)) {
		EmpathyDebugger *dbg;
		GTimeVal now;

		dbg = empathy_debugger_get_singleton ();
		g_get_current_time (&now);

		empathy_debugger_add_message (dbg, &now, log_domain,
					      log_level, message);
	}
}
#endif /* ENABLE_DEBUG */

static void
account_manager_ready_cb (EmpathyAccountManager *manager,
	GParamSpec *spec,
	gpointer user_data)
{
	if (!empathy_account_manager_is_ready (manager))
		return;

	if (empathy_account_manager_get_count (manager) == 0)
		{
			empathy_accounts_dialog_show (GTK_WINDOW (empathy_main_window_get ()),
				NULL);
		}
	create_salut_account ();
}

int
main (int argc, char *argv[])
{
#if HAVE_GEOCLUE
	EmpathyLocationManager *location_manager = NULL;
#endif
	EmpathyStatusIcon *icon;
	EmpathyDispatcher *dispatcher;
	EmpathyAccountManager *account_manager;
	EmpathyLogManager *log_manager;
	EmpathyChatroomManager *chatroom_manager;
	EmpathyCallFactory *call_factory;
	EmpathyFTFactory  *ft_factory;
	GtkWidget         *window;
	EmpathyIdle       *idle;
	gboolean           autoconnect = TRUE;
	gboolean           no_connect = FALSE;
	gboolean           hide_contact_list = FALSE;
	gboolean           accounts_dialog = FALSE;
	GError            *error = NULL;
	TpDBusDaemon      *dbus_daemon;
	UniqueApp         *unique_app;
	GOptionEntry       options[] = {
		{ "no-connect", 'n',
		  0, G_OPTION_ARG_NONE, &no_connect,
		  N_("Don't connect on startup"),
		  NULL },
		{ "hide-contact-list", 'h',
		  0, G_OPTION_ARG_NONE, &hide_contact_list,
		  N_("Don't show the contact list on startup"),
		  NULL },
		{ "accounts", 'a',
		  0, G_OPTION_ARG_NONE, &accounts_dialog,
		  N_("Show the accounts dialog"),
		  NULL },
		{ "version", 'v',
		  G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, show_version_cb, NULL, NULL },
		{ NULL }
	};

	/* Init */
	g_thread_init (NULL);
	empathy_init ();

	if (!gtk_init_with_args (&argc, &argv,
				 N_("- Empathy IM Client"),
				 options, GETTEXT_PACKAGE, &error)) {
		g_warning ("Error in empathy init: %s", error->message);
		return EXIT_FAILURE;
	}

	empathy_gtk_init ();
	g_set_application_name (_(PACKAGE_NAME));
	g_setenv ("PULSE_PROP_media.role", "phone", TRUE);

	gst_init (&argc, &argv);

#if HAVE_LIBCHAMPLAIN
	gtk_clutter_init (&argc, &argv);
#endif

	gtk_window_set_default_icon_name ("empathy");
	textdomain (GETTEXT_PACKAGE);

#ifdef ENABLE_DEBUG
	/* Set up debugger */
	g_log_set_default_handler (default_log_handler, NULL);
#endif

	unique_app = unique_app_new_with_commands ("org.gnome.Empathy",
	                                           NULL,
	                                           "accounts_dialog",
	                                           COMMAND_ACCOUNTS_DIALOG,
	                                           NULL);

	if (unique_app_is_running (unique_app)) {
		unique_app_send_message (unique_app,
		                         accounts_dialog ?
		                         COMMAND_ACCOUNTS_DIALOG :
			                         UNIQUE_ACTIVATE,
			                 NULL);
		g_object_unref (unique_app);
		return EXIT_SUCCESS;
	}

	/* Take well-known name */
	dbus_daemon = tp_dbus_daemon_dup (&error);
	if (error == NULL) {
		if (!tp_dbus_daemon_request_name (dbus_daemon,
						  "org.gnome.Empathy",
						  TRUE, &error)) {
			DEBUG ("Failed to request well-known name: %s",
			       error ? error->message : "no message");
			g_clear_error (&error);
		}
		g_object_unref (dbus_daemon);
	} else {
		DEBUG ("Failed to dup dbus daemon: %s",
		       error ? error->message : "no message");
		g_clear_error (&error);
	}

	if (accounts_dialog) {
		GtkWidget *dialog;

		dialog = empathy_accounts_dialog_show (NULL, NULL);
		g_signal_connect (dialog, "destroy",
				  G_CALLBACK (gtk_main_quit),
				  NULL);

		gtk_main ();
		return 0;
	}

	/* Setting up Idle */
	idle = empathy_idle_dup_singleton ();
	empathy_idle_set_auto_away (idle, TRUE);
	use_nm_notify_cb (empathy_conf_get (), EMPATHY_PREFS_USE_NM, idle);
	empathy_conf_notify_add (empathy_conf_get (), EMPATHY_PREFS_USE_NM,
				 use_nm_notify_cb, idle);

	/* Autoconnect */
	empathy_conf_get_bool (empathy_conf_get (),
			       EMPATHY_PREFS_AUTOCONNECT,
			       &autoconnect);
	if (autoconnect && ! no_connect &&
		tp_connection_presence_type_cmp_availability (empathy_idle_get_state
			(idle), TP_CONNECTION_PRESENCE_TYPE_OFFLINE) <= 0) {
		empathy_idle_set_state (idle, TP_CONNECTION_PRESENCE_TYPE_AVAILABLE);
	}

	/* account management */
	account_manager = empathy_account_manager_dup_singleton ();
	g_signal_connect (account_manager, "notify::ready",
		G_CALLBACK (account_manager_ready_cb), NULL);

	migrate_config_to_xdg_dir ();

	/* Setting up UI */
	window = empathy_main_window_show ();
	icon = empathy_status_icon_new (GTK_WINDOW (window), hide_contact_list);

	g_signal_connect (unique_app, "message-received",
	                  G_CALLBACK (unique_app_message_cb),
	                  window);

	/* Handle channels */
	dispatcher = empathy_dispatcher_dup_singleton ();
	g_signal_connect (dispatcher, "dispatch", G_CALLBACK (dispatch_cb), NULL);

	/* Logging */
	log_manager = empathy_log_manager_dup_singleton ();
	empathy_log_manager_observe (log_manager, dispatcher);

	chatroom_manager = empathy_chatroom_manager_dup_singleton (NULL);
	empathy_chatroom_manager_observe (chatroom_manager, dispatcher);

	notify_init (_(PACKAGE_NAME));
	/* Create the call factory */
	call_factory = empathy_call_factory_initialise ();
	g_signal_connect (G_OBJECT (call_factory), "new-call-handler",
		G_CALLBACK (new_call_handler_cb), NULL);
	/* Create the FT factory */
	ft_factory = empathy_ft_factory_dup_singleton ();
	g_signal_connect (ft_factory, "new-ft-handler",
		G_CALLBACK (new_ft_handler_cb), NULL);
	g_signal_connect (ft_factory, "new-incoming-transfer",
		G_CALLBACK (new_incoming_transfer_cb), NULL);

	/* Location mananger */
#if HAVE_GEOCLUE
	location_manager = empathy_location_manager_dup_singleton ();
#endif

	gtk_main ();

	empathy_idle_set_state (idle, TP_CONNECTION_PRESENCE_TYPE_OFFLINE);

	g_object_unref (idle);
	g_object_unref (icon);
	g_object_unref (account_manager);
	g_object_unref (log_manager);
	g_object_unref (dispatcher);
	g_object_unref (chatroom_manager);
#if HAVE_GEOCLUE
	g_object_unref (location_manager);
#endif
	g_object_unref (ft_factory);
	g_object_unref (unique_app);

	notify_uninit ();

	return EXIT_SUCCESS;
}