#include "libnazgul.h"

// l'id de l'element enlevé vas dans oldElemId

int msgQueueElemRem(msgQueue * queue, msgQueueElemId oldElemId){
  msgQueueElem * queueOldHeadElem;

	
	if (strcmp(queue->headId,queue->tailId)==0){
	NZG_ERROR("msgQueueElemRem : Empty queue",queue->id);
	goto ERROR;
  }
  strcpy(oldElemId,queue->headId);

  queueOldHeadElem=msgQueueElemOpen(oldElemId);
  if (queueOldHeadElem == NULL){
	NZG_ERROR("msgQueueElemOpen",oldElemId);
	goto ERROR;
  }
  strcpy(queue->headId,queueOldHeadElem->next);
  if (msgQueueElemClose(queueOldHeadElem)<0 ){
	NZG_ERROR("msgQueueElemClose",oldElemId);
	goto ERROR;

  }
	
	return 0;
ERROR:
  return -1;
}