/*

 * pep_activity.c       -- Pep activity events

 *

 * Copyright (C) 2009-2012 Myhailo Danylenko <isbear@ukrpost.net>

 *

 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307

 * USA

 */

#include <glib.h>

#include <loudmouth/loudmouth.h>

#include <string.h>

#include <mcabber/utils.h>

#include <mcabber/logprint.h>

#include <mcabber/hooks.h>

#include <mcabber/modules.h>

#include <mcabber/xmpp.h>

#include <mcabber/xmpp_helper.h>

#include "pep.h"

#include "pep_activity.h"

#include "config.h"

//

//  module description

//

void pep_activity_init   (void);

void pep_activity_uninit (void);

#define DESCRIPTION ( PEP_ACTIVITY_DESCRIPTION )

static const gchar *deps[] = { "pep", NULL };

module_info_t info_pep_activity = {

	.branch       = MCABBER_BRANCH,

	.api          = MCABBER_API_VERSION,

	.version      = PROJECT_VERSION,

	.description  = DESCRIPTION,

	.requires     = deps,

	.init         = pep_activity_init,

	.uninit       = pep_activity_uninit,

	.next         = NULL,

};

//

//  globals

//

static GQuark            activity_gerror_quark    = 0;

static gboolean          activity_delayed         = FALSE;

static guint             activity_hid_connect     = 0;

static guint             activity_hid_disconnect  = 0;

static guint             activity_hid_activityout = 0;

static gchar            *activity_major           = NULL;

static gchar            *activity_minor           = NULL;

static gchar            *activity_text            = NULL;

static LmMessageHandler *activity_reply_handler   = NULL;

//

//  code

//

static LmHandlerResult activity_publish_reply_handler (LmMessageHandler *handler, LmConnection *connection, LmMessage *message, gpointer userdata)

{

	switch (lm_message_get_sub_type (message)) {

	case LM_MESSAGE_SUB_TYPE_RESULT:

		break;

	case LM_MESSAGE_SUB_TYPE_ERROR:

		{

			LmMessageNode *node   = lm_message_get_node (message);

			const gchar   *type;

			const gchar   *reason;

			node = lm_message_node_get_child (node, "error");

			type = lm_message_node_get_attribute (node, "type");

			if (node->children)

				reason = node->children->name;

			else

				reason = "undefined";

			scr_log_print (LPRINT_LOGNORM, "activity: Publish failed: %s - %s", type, reason);

		}

		break;

	default:

		return LM_HANDLER_RESULT_ALLOW_MORE_HANDLERS;

		break;

	}

	return LM_HANDLER_RESULT_REMOVE_MESSAGE;

}

static void activity_publish (const gchar *major, const gchar *minor, const gchar *text)

{

	if (!xmpp_is_online ()) {

		g_free (activity_major);

		g_free (activity_minor);

		g_free (activity_text);

		activity_major   = g_strdup (major);

		activity_minor   = g_strdup (minor);

		activity_text    = g_strdup (text);

		activity_delayed = TRUE;

		return;

	}

	LmMessage     *request = lm_message_new_with_sub_type (NULL, LM_MESSAGE_TYPE_IQ, LM_MESSAGE_SUB_TYPE_SET);

	LmMessageNode *node    = lm_message_get_node (request);

	lm_message_node_set_attribute (node, "from", lm_connection_get_jid (lconnection));

	node = lm_message_node_add_child (node, "pubsub", NULL);

	lm_message_node_set_attribute (node, "xmlns", NS_PUBSUB);

	node = lm_message_node_add_child (node, "publish", NULL);

	lm_message_node_set_attribute (node, "node", NS_ACTIVITY);

	node = lm_message_node_add_child (node, "item", NULL);

	node = lm_message_node_add_child (node, "activity", NULL);

	lm_message_node_set_attribute (node, "xmlns", NS_ACTIVITY);

	if (major) {

		LmMessageNode *mnode = lm_message_node_add_child (node, major, NULL);

		if (minor)

			lm_message_node_add_child (mnode, minor, NULL);

	}

	if (text)

		lm_message_node_add_child (node, "text", text);

	{ // send

		GError *error = NULL;

		lm_connection_send_with_reply (lconnection, request, activity_reply_handler, &error);

		if (error) {

			scr_log_print (LPRINT_DEBUG, "activity: Publish failed: %s.", error -> message);

			g_error_free (error);

		}

	}

	lm_message_unref (request);

}

gboolean pep_activity_request ( const gchar *to, GError **err )

{

	LmMessage     *request;

	LmMessageNode *node;

	if ( ! xmpp_is_online () ) {

		g_set_error ( err, activity_gerror_quark, ACTIVITY_ERROR_NOTCONNECTED, "You are not connected" );

		return FALSE;

	}

	request = lm_message_new_with_sub_type (to, LM_MESSAGE_TYPE_IQ, LM_MESSAGE_SUB_TYPE_GET);

	node = lm_message_get_node (request);

	lm_message_node_set_attribute (node, "from", lm_connection_get_jid (lconnection));

	node = lm_message_node_add_child (node, "pubsub", NULL);

	lm_message_node_set_attribute (node, "xmlns", NS_PUBSUB);

	node = lm_message_node_add_child (node, "items", NULL);

	lm_message_node_set_attribute (node, "node", NS_ACTIVITY);

	{ // send, result will be handled by pep

		GError *error = NULL;

		lm_connection_send (lconnection, request, &error);

		if (error) {

			g_propagate_error ( err, error );

			return FALSE;

		}

	}

	lm_message_unref (request);

	return TRUE;

}

static void activity_handler ( const gchar *from, const gchar *enode, LmMessageNode *n, const gchar *id, gpointer ignore )

{

	LmMessageNode *node;

	hk_arg_t args[] = {

		{ "major", NULL },

		{ "minor", NULL },

		{ "text",  NULL },

		{ "from",  from },

		{ NULL,    NULL },

	};

	for ( node = n -> children; node; node = node -> next ) {

		const gchar *name = node -> name;

		if ( ! strcmp ( name, "text" ) )

			args[2].value = lm_message_node_get_value ( node );

		else {

			LmMessageNode *mnode = node -> children;

			if ( mnode ) // XXX check for xmlns presence?

				args[1].value = mnode -> name;

			args[0].value = name;

		}

	}

	hk_run_handlers ( HOOK_ACTIVITY_IN, args );

}

static guint activity_hch ( const gchar *hid, hk_arg_t *args, gpointer userdata )

{

	if (activity_delayed) {

		gchar *tmp_major = activity_major;

		gchar *tmp_minor = activity_minor;

		gchar *tmp_text  = activity_text;

		activity_delayed = FALSE;

		activity_major = activity_minor = activity_text = NULL;

		activity_publish (tmp_major, tmp_minor, tmp_text);

		g_free (tmp_major);

		g_free (tmp_minor);

		g_free (tmp_text);

	}

	return HOOK_HANDLER_RESULT_ALLOW_MORE_HANDLERS;

}

static guint activity_hdh ( const gchar *hid, hk_arg_t *args, gpointer userdata )

{

#ifdef HAVE_LM_CONNECTION_UNREGISTER_REPLY_HANDLER

	if ( lconnection && activity_reply_handler )

		lm_connection_unregister_reply_handler ( lconnection, activity_reply_handler );

#endif

	return HOOK_HANDLER_RESULT_ALLOW_MORE_HANDLERS;

}

static guint activity_haoh ( const gchar *hid, hk_arg_t *args, gpointer userdata )

{

	const gchar *minor = NULL;

	const gchar *major = NULL;

	const gchar *text  = NULL;

	{

		hk_arg_t *arg;

		for ( arg = args; arg -> name; arg ++ ) {

			const gchar *value = arg -> value;

			if ( value ) {

				const gchar *name = arg -> name;

				if ( ! strcmp ( name, "major" ) )

					major = value;

				else if ( ! strcmp ( name, "minor" ) )

					minor = value;

				else if ( !strcmp ( name, "text" ) )

					text = value;

			}

		}

	}

	activity_publish ( major, minor, text );

	return HOOK_HANDLER_RESULT_ALLOW_MORE_HANDLERS;

}

void pep_activity_init (void)

{

	activity_gerror_quark = g_quark_from_string ( "pep-activity-gerror-quark" );

	activity_reply_handler = lm_message_handler_new (activity_publish_reply_handler, NULL, NULL);

	pep_register_xmlns_handler (NS_ACTIVITY, activity_handler, NULL, NULL);

	activity_hid_connect     = hk_add_handler (activity_hch,  HOOK_POST_CONNECT, G_PRIORITY_DEFAULT, NULL);

	activity_hid_disconnect  = hk_add_handler (activity_hdh,  HOOK_PRE_DISCONNECT, G_PRIORITY_DEFAULT, NULL);

	activity_hid_activityout = hk_add_handler (activity_haoh, HOOK_ACTIVITY_OUT, G_PRIORITY_DEFAULT, NULL);

	xmpp_add_feature ( NS_ACTIVITY        );

	xmpp_add_feature ( NS_ACTIVITY_NOTIFY );

}

void pep_activity_uninit (void)

{

	xmpp_del_feature ( NS_ACTIVITY        );

	xmpp_del_feature ( NS_ACTIVITY_NOTIFY );

	hk_del_handler ( HOOK_POST_CONNECT,   activity_hid_connect );

	hk_del_handler ( HOOK_PRE_DISCONNECT, activity_hid_disconnect );

	hk_del_handler ( HOOK_ACTIVITY_OUT,   activity_hid_activityout );

	pep_unregister_xmlns_handler ( NS_ACTIVITY );

#ifdef HAVE_LM_CONNECTION_UNREGISTER_REPLY_HANDLER

	if (lconnection)

		lm_connection_unregister_reply_handler (lconnection, activity_reply_handler);

#endif

	lm_message_handler_invalidate (activity_reply_handler);

	lm_message_handler_unref (activity_reply_handler);

	g_free (activity_major);

	g_free (activity_minor);

	g_free (activity_text);

}

/* vim: se ts=4 sw=4: */