//*****************************************************************************
// @@@ START COPYRIGHT @@@
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//
//// @@@ END COPYRIGHT @@@
//*****************************************************************************

#ifndef PRIVMGR_DEFS_H
#define PRIVMGR_DEFS_H

#include <bitset>
#include <map>
#include <iterator>
#include "NAUserId.h"
#include "ComSmallDefs.h"

// *****************************************************************************
// *
// * File:         PrivMgrDef.h
// * Description:  This file contains common definitions used by the  
// *               privilege manager component
// *
// *****************************************************************************

#define PRIVMGR_INTERNAL_ERROR(text)                                      \
   *pDiags_ << DgSqlCode(-CAT_INTERNAL_EXCEPTION_ERROR)                   \
            << DgString0(__FILE__)                                        \
            << DgInt0(__LINE__)                                           \
            << DgString1(text)                                            


// Returns the result of the operation 
enum PrivStatus { STATUS_UNKNOWN   = 20,
                  STATUS_GOOD      = 21,
                  STATUS_WARNING   = 22,
                  STATUS_NOTFOUND  = 23,
                  STATUS_ERROR     = 24
                };

inline const char * privStatusEnumToLit(PrivStatus privStatus)
{
  std::string result;
  switch (privStatus)
  {
    case STATUS_GOOD:
      result = "GOOD";
      break;
    case STATUS_WARNING:
      result = "WARNING";
      break;
    case STATUS_NOTFOUND:
      result = "NOTFOUND";
      break;
    case STATUS_ERROR:
      result = "ERROR";
      break;
    default:
      result = "UNKNOWN";
  }
  return result.c_str();
}
  

enum class PrivClass {
   ALL = 2,
   OBJECT = 3,
   COMPONENT = 4,
   SCHEMA = 5
};

// Defines the list of supported privileges
// and their order in the privilege and grantable bitmaps
// stored in the OBJECT_PRIVILEGES table
enum PrivType { SELECT_PRIV = 0, //DML PRIVS START HERE 
                INSERT_PRIV,
                DELETE_PRIV,
                UPDATE_PRIV,
                USAGE_PRIV,
                REFERENCES_PRIV,
                EXECUTE_PRIV,
                CREATE_PRIV,     //DDL PRIVS START HERE
                ALTER_PRIV,
                DROP_PRIV,
                ALL_DML,
                ALL_DDL,
                ALL_PRIVS };
                
class ColPrivSpec
{
public:
   PrivType       privType;
   int32_t        columnOrdinal;
   bool           grantorHasWGO;
};

inline bool isColumnPrivType(PrivType privType)
{

   return (privType == PrivType::SELECT_PRIV || 
           privType == PrivType::INSERT_PRIV ||
           privType == PrivType::REFERENCES_PRIV ||
           privType == PrivType::UPDATE_PRIV);
   
}
     
inline bool isLibraryPrivType(PrivType privType)
{

   return (privType == PrivType::USAGE_PRIV || 
           privType == PrivType::UPDATE_PRIV);
   
}
     
inline bool isTablePrivType(PrivType privType)
{

   return (privType == PrivType::SELECT_PRIV || 
           privType == PrivType::INSERT_PRIV ||
           privType == PrivType::DELETE_PRIV ||
           privType == PrivType::REFERENCES_PRIV ||
           privType == PrivType::UPDATE_PRIV);
   
}
     
inline bool isUDRPrivType(PrivType privType)
{

   return (privType == PrivType::EXECUTE_PRIV);
   
}

inline bool isSequenceGeneratorPrivType(PrivType privType)
{

   return (privType == PrivType::USAGE_PRIV);
   
}
     
enum class PrivDropBehavior {
   CASCADE = 2,
   RESTRICT = 3
};                

enum class PrivLevel {
   UNKNOWN = 0,
   GLOBAL = 2,
   CATALOG = 3,
   SCHEMA = 4,
   OBJECT = 5,
   COLUMN = 6
};
  
// NOTE: These values need to match the corresponding values in 
// common/ComSmallDefs.h, ComIdClass.
enum class PrivAuthClass {
   UNKNOWN = 0,
   ROLE = 1,
   USER = 2 
};                

const static int32_t FIRST_DML_PRIV = SELECT_PRIV;
const static int32_t FIRST_DML_COL_PRIV = SELECT_PRIV;
const static int32_t FIRST_PRIV = SELECT_PRIV;
const static int32_t LAST_PRIMARY_DML_PRIV = UPDATE_PRIV;
const static int32_t LAST_DML_PRIV = EXECUTE_PRIV;
const static int32_t LAST_DML_COL_PRIV = REFERENCES_PRIV;
const static int32_t FIRST_DDL_PRIV = CREATE_PRIV;
const static int32_t LAST_DDL_PRIV = DROP_PRIV;
const static int32_t LAST_PRIV = DROP_PRIV;

const static int32_t NBR_DML_PRIVS = LAST_DML_PRIV-FIRST_DML_PRIV + 1;
// This calculation includes non-column-level privileges.  There are only four
// column-level privileges, but DELETE and USAGE are include so bit indexing works.
const static int32_t NBR_DML_COL_PRIVS = LAST_DML_COL_PRIV - FIRST_DML_COL_PRIV + 1;   
const static int32_t NBR_DDL_PRIVS = LAST_DDL_PRIV-FIRST_DDL_PRIV + 1;
const static int32_t NBR_OF_PRIVS = NBR_DML_PRIVS+NBR_DDL_PRIVS;

// Defines the privileges and grantable bitmaps as PrivMgrBitmap
//using PrivMgrBitmap = std::bitset<NBR_OF_PRIVS>;
#define PrivMgrBitmap std::bitset<NBR_OF_PRIVS>
typedef std::bitset<NBR_OF_PRIVS> PrivObjectBitmap;
typedef std::bitset<NBR_OF_PRIVS> PrivColumnBitmap;
typedef std::bitset<NBR_OF_PRIVS> PrivSchemaBitmap;
typedef std::map<size_t,PrivColumnBitmap> PrivColList;
typedef std::map<size_t,std::bitset<NBR_OF_PRIVS> >::const_iterator PrivColIterator;

inline bool isDMLPrivType(PrivType privType)
{

   if ((privType >= FIRST_DML_PRIV && privType <= LAST_DML_PRIV) ||
       privType == ALL_DML)
      return true;
   
   return false;
   
}
     

// object types for grantable objects
#define BASE_TABLE_OBJECT_LIT               "BT"
#define LIBRARY_OBJECT_LIT                  "LB"
#define VIEW_OBJECT_LIT                     "VI"
#define USER_DEFINED_ROUTINE_OBJECT_LIT     "UR"
#define SEQUENCE_GENERATOR_OBJECT_LIT       "SG"

#define UNKNOWN_GRANTOR_TYPE_LIT               "  "
#define SYSTEM_GRANTOR_LIT                     "S "
#define USER_GRANTOR_LIT                       "U "

#define UNKNOWN_GRANTEE_TYPE_LIT               "  "
#define PUBLIC_GRANTEE_LIT                     "P "
#define USER_GRANTEE_LIT                       "U "

#define MAX_SQL_IDENTIFIER_NAME_LEN 256

#endif