/*
    This file is part of libcapwap.

    libcapwap 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.

    libcapwap 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.

*/

/**
 * @file
 * @brief Implementation of methods for actionlists.
 */


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

#include "action.h"

static inline int cw_action_in_cmp(const void *elem1, const void *elem2)
{
	struct cw_action_in *e1 = (struct cw_action_in *) elem1;
	struct cw_action_in *e2 = (struct cw_action_in *) elem2;
	int r;

	r = e1->capwap_state - e2->capwap_state;
	if (r != 0)
		return r;

	r = e1->msg_id - e2->msg_id;
	if (r != 0)
		return r;

	r = e1->elem_id - e2->elem_id;
	if (r != 0)
		return r;

	r = e1->vendor_id - e2->vendor_id;
	if (r != 0)
		return r;

	r = e1->proto - e2->proto;
	if (r != 0)
		return r;



	return 0;
}


cw_action_in_t *cw_actionlist_in_add(cw_actionlist_in_t t, struct cw_action_in * a)
{
	return cw_actionlist_add(t, a, sizeof(struct cw_action_in));
}


struct cw_action_in *cw_actionlist_in_get(cw_actionlist_in_t t, struct cw_action_in *a)
{
	return avltree_get(t, a);
}


cw_actionlist_in_t cw_actionlist_in_create()
{
	return avltree_create(cw_action_in_cmp, free);
}


int cw_actionlist_in_register_actions(cw_actionlist_in_t t, cw_action_in_t * actions)
{
	while (actions->capwap_state) {
		cw_action_in_t *rc = cw_actionlist_in_add(t, actions);
		if (rc == 0)
			return 0;
		actions++;
	}
	return 1;
}

int cw_actionlist_out_register_actions(cw_actionlist_out_t t, cw_action_out_t * actions)
{
	while (actions->msg_id != 0) {
		cw_action_out_t *rc = cw_actionlist_out_add(t, actions);
		if (rc == 0)
			return 0;
		actions++;
	}
	return 1;
}




/* 
 * Compare function for actionlist_out_t lists
 */
static int cw_action_out_cmp(const void *elem1, const void *elem2)
{
	struct cw_action_out *e1 = (struct cw_action_out *) elem1;
	struct cw_action_out *e2 = (struct cw_action_out *) elem2;
	int r;

	r = e1->msg_id - e2->msg_id;
	if (r != 0)
		return r;

	r = e1->item_id - e2->item_id;
	if (r != 0)
		return r;

	r = e1->vendor_id - e2->vendor_id;
	if (r != 0)
		return r;

	return 0;
}



/**
 * Add an action to an action 
 * @param t actionlist
 * @param a action to add
 * @param s size of element to add
 * @return pointer to added element or NULL if an error has opccured
 */
void *cw_actionlist_add(struct avltree *t, void *a, size_t s)
{

	void *r = avltree_replace_data(t, a, sizeof(struct cw_action_in));
	if (r)
		return r;

	void *an = malloc(s);
	if (!an)
		return NULL;

	memcpy(an, a, s);
	return avltree_add(t, an);

}


/**
 * Create an action list for outgoing message lements
 * @return the created action list or NULL if an erro has occured.
 */
cw_actionlist_out_t cw_actionlist_out_create()
{
	return avltree_create(cw_action_out_cmp, free);
}


cw_action_out_t *cw_actionlist_out_add(cw_actionlist_out_t t, struct cw_action_out * a)
{
	return cw_actionlist_add(t, a, sizeof(struct cw_action_out));
}



cw_action_in_t *cw_actionlist_in_set_msg_end_callback(cw_actionlist_in_t a, 
				      uint8_t capwap_state,
					uint32_t msg_id,
				      int (*fun) (struct conn * conn,
						  struct cw_action_in * a, uint8_t * data,
						  int len,struct sockaddr *from))
{
	cw_action_in_t as,*ar;
	as.vendor_id=0;
	as.proto=0;
	as.elem_id=-1;
	as.msg_id=msg_id;
	as.capwap_state=capwap_state;

	ar = cw_actionlist_in_get(a,&as);
	if (!ar)
		return NULL;

	ar->end=fun;		
	return ar;
}