/*
 * Copyright (C) 2012 - Juan Ferrer Toribio
 *
 * 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
 * (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, see <http://www.gnu.org/licenses/>.
 */

#include "vn-batch.h"

static void vn_batch_buildable_interface_init (GtkBuildableIface * iface);

G_DEFINE_TYPE_WITH_CODE (VnBatch, vn_batch, SQL_TYPE_BATCH,
	G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
		vn_batch_buildable_interface_init)
);

/* GtkBuildable custom tag implementation:
 * <items>
 *   <item id="identifier" param="param-id"/>
 *   ...
 * </items>
 */

typedef struct
{
	GtkBuilder * builder;
	SqlBatch * batch;
	GSList * ids;
	GSList * params;
}
VnBatchData;

//+++++++++++++++++++++++++++++++++++++++++++++++++++ GtkBuildable

static void vn_batch_start_element (GMarkupParseContext * context,
	const gchar * element, const gchar ** names,
	const gchar ** values, gpointer data, GError ** err)
{
	guint i;
	VnBatchData * d = data;

	if (!g_strcmp0 (element, "item"))
	{
		for (i = 0; names[i]; i++)
		if (!g_strcmp0 (names[i], "id"))
			d->ids = g_slist_prepend (d->ids, g_strdup (values[i]));
		else if (!g_strcmp0 (names[i], "param"))
			d->params = g_slist_prepend (d->params, g_strdup (values[i]));
	}
}

static const GMarkupParser vn_batch_parser =
{
	 vn_batch_start_element
};

static gboolean vn_batch_buildable_custom_tag_start (GtkBuildable * buildable,
	GtkBuilder * builder, GObject * child, const gchar * tag,
	GMarkupParser * parser, gpointer * data)
{
	if (child)
		return FALSE;

	if (!g_strcmp0 (tag, "items"))
	{
		VnBatchData * data_ptr = g_slice_new (VnBatchData);
		data_ptr->builder = builder;
		data_ptr->batch = SQL_BATCH (buildable);
		data_ptr->ids = NULL;
		data_ptr->params = NULL;
		*data = data_ptr;
		*parser = vn_batch_parser;

		return TRUE;
	}
	else
		g_warning ("Unknown custom batch tag: %s", tag);

	return FALSE;
}

static void vn_batch_buildable_custom_finished (GtkBuildable * buildable,
	GtkBuilder * builder, GObject * child, const gchar * tagname, gpointer data)
{
	GSList * i, * p;
	VnBatchData * d = data;

	g_return_if_fail (d->builder);

	if (!g_strcmp0 (tagname, "items"))
	{
		for (i = d->ids, p = d->params;
			i && p;
			i = i->next, p = p->next)
		{
			gchar * id = i->data;
			GvnParam * param = GVN_PARAM (gtk_builder_get_object (d->builder, p->data));
			sql_batch_add_from_param (SQL_BATCH (buildable), id, param);
		}

		g_slist_free_full (d->ids, g_free);
		g_slist_free_full (d->params, g_free);
		g_slice_free (VnBatchData, d);
	}
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class

static void vn_batch_buildable_interface_init (GtkBuildableIface * iface)
{
	iface->custom_tag_start = vn_batch_buildable_custom_tag_start;
	iface->custom_finished = vn_batch_buildable_custom_finished;
}

static void vn_batch_init (VnBatch * self)
{
}

static void vn_batch_finalize (VnBatch * self)
{
	G_OBJECT_CLASS (vn_batch_parent_class)->finalize (G_OBJECT (self));
}

static void vn_batch_class_init (VnBatchClass * klass)
{
	GObjectClass * k = G_OBJECT_CLASS (klass);
	k->finalize = (GObjectFinalizeFunc) vn_batch_finalize;
}