/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#define _DEFAULT_SOURCE
#include <arpa/inet.h>

#include "mgmt.h"
#include "tschemautil.h"

int mgmtGetAcctsNum();
SShowObj *mgmtGetNextAcct(SShowObj *pShow, SAcctObj **pAcct);

int mgmtAddDbIntoAcct(SAcctObj *pAcct, SDbObj *pDb) {
  pthread_mutex_lock(&pAcct->mutex);
  pDb->next = pAcct->pHead;
  pDb->prev = NULL;

  if (pAcct->pHead) pAcct->pHead->prev = pDb;

  pAcct->pHead = pDb;
  pAcct->acctInfo.numOfDbs++;
  pthread_mutex_unlock(&pAcct->mutex);

  return 0;
}

int mgmtRemoveDbFromAcct(SAcctObj *pAcct, SDbObj *pDb) {
  pthread_mutex_lock(&pAcct->mutex);
  if (pDb->prev) pDb->prev->next = pDb->next;

  if (pDb->next) pDb->next->prev = pDb->prev;

  if (pDb->prev == NULL) pAcct->pHead = pDb->next;

  pAcct->acctInfo.numOfDbs--;
  pthread_mutex_unlock(&pAcct->mutex);

  return 0;
}

int mgmtAddUserIntoAcct(SAcctObj *pAcct, SUserObj *pUser) {
  pthread_mutex_lock(&pAcct->mutex);
  pUser->next = pAcct->pUser;
  pUser->prev = NULL;

  if (pAcct->pUser) pAcct->pUser->prev = pUser;

  pAcct->pUser = pUser;
  pAcct->acctInfo.numOfUsers++;
  pthread_mutex_unlock(&pAcct->mutex);

  return 0;
}

int mgmtRemoveUserFromAcct(SAcctObj *pAcct, SUserObj *pUser) {
  pthread_mutex_lock(&pAcct->mutex);
  if (pUser->prev) pUser->prev->next = pUser->next;

  if (pUser->next) pUser->next->prev = pUser->prev;

  if (pUser->prev == NULL) pAcct->pUser = pUser->next;

  pAcct->acctInfo.numOfUsers--;
  pthread_mutex_unlock(&pAcct->mutex);

  return 0;
}

int mgmtAddConnIntoAcct(SConnObj *pConn) {
  SAcctObj *pAcct = pConn->pAcct;
  if (pAcct == NULL) return 0;

  pthread_mutex_lock(&pAcct->mutex);

  assert(pConn != pAcct->pConn);

  pConn->next = pAcct->pConn;
  pConn->prev = NULL;

  if (pAcct->pConn) pAcct->pConn->prev = pConn;

  pAcct->pConn = pConn;
  pAcct->acctInfo.numOfConns++;

  pthread_mutex_unlock(&pAcct->mutex);

  return 0;
}

int mgmtRemoveConnFromAcct(SConnObj *pConn) {
  SAcctObj *pAcct = pConn->pAcct;
  if (pAcct == NULL) return 0;

  pthread_mutex_lock(&pAcct->mutex);

  if (pConn->prev) pConn->prev->next = pConn->next;

  if (pConn->next) pConn->next->prev = pConn->prev;

  if (pConn->prev == NULL) pAcct->pConn = pConn->next;

  pAcct->acctInfo.numOfConns--;
  // pAcct->numOfUsers--;

  if (pConn->pQList) {
    pAcct->acctInfo.numOfQueries -= pConn->pQList->numOfQueries;
    pAcct->acctInfo.numOfStreams -= pConn->pSList->numOfStreams;
  }

  pthread_mutex_unlock(&pAcct->mutex);

  pConn->next = NULL;
  pConn->prev = NULL;

  return 0;
}
