/*
   Copyright (C) 2005, 2006 MySQL AB, 2008, 2009 Sun Microsystems, Inc.
    All rights reserved. Use is subject to license terms.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

/***************************************************************
* I N C L U D E D   F I L E S                                  *
***************************************************************/

#include <ndb_global.h>

#include "userInterface.h"

#include "dbPopulate.h"
#include <NdbOut.hpp>
#include <random.h>

/***************************************************************
* L O C A L   C O N S T A N T S                                *
***************************************************************/

/***************************************************************
* L O C A L   D A T A   S T R U C T U R E S                    *
***************************************************************/

/***************************************************************
* L O C A L   F U N C T I O N S                                *
***************************************************************/

static void getRandomSubscriberData(int              subscriberNo, 
		                    SubscriberNumber number,
		                    SubscriberName   name);

static void populate(const char *title,
                     int   count,
                     void (*func)(UserHandle*,int),
                     UserHandle *uh);

static void populateServers(UserHandle *uh, int count);
static void populateSubscribers(UserHandle *uh, int count);
static void populateGroups(UserHandle *uh, int count);

/***************************************************************
* L O C A L   D A T A                                          *
***************************************************************/

static SequenceValues permissionsDefinition[] = {
   {90, 1},
   {10, 0},
   {0,  0}
};

/***************************************************************
* P U B L I C   D A T A                                        *
***************************************************************/


/***************************************************************
****************************************************************
* L O C A L   F U N C T I O N S   C O D E   S E C T I O N      *
****************************************************************
***************************************************************/

static void getRandomSubscriberData(int              subscriberNo, 
		                    SubscriberNumber number,
		                    SubscriberName   name)
{
   char sbuf[SUBSCRIBER_NUMBER_LENGTH + 1];
   sprintf(sbuf, "%.*d", SUBSCRIBER_NUMBER_LENGTH, subscriberNo);
   memcpy(number, sbuf, SUBSCRIBER_NUMBER_LENGTH);

   memset(name, myRandom48(26)+'A', SUBSCRIBER_NAME_LENGTH);
}

static void populate(const char *title,
                     int   count,
                     void (*func)(UserHandle*, int),
                     UserHandle *uh)
{
   ndbout_c("Populating %d '%s' ... ",count, title);
   /* fflush(stdout); */
   func(uh,count);
   ndbout_c("done");
}

static void populateServers(UserHandle *uh, int count)
{
   int  i, j;
   int len;
   char tmp[80];
   int suffix_length = 1;
   ServerName serverName;
   SubscriberSuffix suffix;

   int commitCount = 0;

   for(i = 0; i < SUBSCRIBER_NUMBER_SUFFIX_LENGTH; i++)
     suffix_length *= 10;

   for(i = 0; i < count; i++) {
      sprintf(tmp, "-Server %d-", i);

      len = strlen(tmp);
      for(j = 0; j < SERVER_NAME_LENGTH; j++){
         serverName[j] = tmp[j % len];
      }
      /* serverName[j] = 0;	not null-terminated */

      for(j = 0; j < suffix_length; j++){
	 char sbuf[SUBSCRIBER_NUMBER_SUFFIX_LENGTH + 1];
         sprintf(sbuf, "%.*d", SUBSCRIBER_NUMBER_SUFFIX_LENGTH, j);
	 memcpy(suffix, sbuf, SUBSCRIBER_NUMBER_SUFFIX_LENGTH);
         userDbInsertServer(uh, i, suffix, serverName);
	 commitCount ++;
	 if((commitCount % OP_PER_TRANS) == 0)
	   userDbCommit(uh);
      }
   }
   if((commitCount % OP_PER_TRANS) != 0)
     userDbCommit(uh);
}

static void populateSubscribers(UserHandle *uh, int count)
{
   SubscriberNumber number;
   SubscriberName   name;
   int i, j, k;
   int res;

   SequenceValues values[NO_OF_GROUPS+1];
   RandomSequence seq;

   for(i = 0; i < NO_OF_GROUPS; i++) {
      values[i].length = 1;
      values[i].value  = i;
   }

   values[i].length = 0;
   values[i].value  = 0;

   if( initSequence(&seq, values) != 0 ) {
      ndbout_c("could not set the sequence of random groups");
      exit(0);
   }

#define RETRIES 25

   for(i = 0; i < count; i+= OP_PER_TRANS) {
     for(j = 0; j<RETRIES; j++){
       for(k = 0; k<OP_PER_TRANS && i+k < count; k++){
	 getRandomSubscriberData(i+k, number, name);
	 userDbInsertSubscriber(uh, number, getNextRandom(&seq), name);
       }
       res = userDbCommit(uh);
       if(res == 0)
	 break;
       if(res != 1){
	 ndbout_c("Terminating");
	 exit(0);
       }
     }
     if(j == RETRIES){
       ndbout_c("Terminating");
       exit(0);
     }
   }
}

static void populateGroups(UserHandle *uh, int count)
{
   int i;
   int j;
   int len;
   RandomSequence seq;
   Permission     allow[NO_OF_GROUPS];
   ServerBit      serverBit;
   GroupName      groupName;
   char           tmp[80];
   int commitCount = 0;

   if( initSequence(&seq, permissionsDefinition) != 0 ) {
      ndbout_c("could not set the sequence of random permissions");
      exit(0);
   }

   for(i = 0; i < NO_OF_GROUPS; i++)
      allow[i] = 0;

   for(i = 0; i < NO_OF_SERVERS; i++) {
      serverBit = 1 << i;

      for(j = 0; j < NO_OF_GROUPS; j++ ) {
         if( getNextRandom(&seq) )
            allow[j] |= serverBit;
      }
   }

   for(i = 0; i < NO_OF_GROUPS; i++) {
      sprintf(tmp, "-Group %d-", i);

      len = strlen(tmp);

      for(j = 0; j < GROUP_NAME_LENGTH; j++) {
        groupName[j] = tmp[j % len];
      }
      /* groupName[j] = 0;	not null-terminated */

      userDbInsertGroup(uh,
		        i,
		        groupName,
		        allow[i],
		        allow[i],
		        allow[i]);
      commitCount ++;
      if((commitCount % OP_PER_TRANS) == 0)
	userDbCommit(uh);
   }
   if((commitCount % OP_PER_TRANS) != 0)
     userDbCommit(uh);
}

/***************************************************************
****************************************************************
* P U B L I C   F U N C T I O N S   C O D E   S E C T I O N    *
****************************************************************
***************************************************************/

void dbPopulate(UserHandle *uh)
{
   populate("servers", NO_OF_SERVERS, populateServers, uh);
   populate("subscribers", NO_OF_SUBSCRIBERS, populateSubscribers, uh);
   populate("groups", NO_OF_GROUPS, populateGroups, uh);
}
