/*
 Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
 
 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
 */
#include "all_tests.h"

int do_incr(int v, QueryPlan *plan, Ndb *db, 
            const char *akey, bool, bool, Uint64 *val);

int run_incr_test(QueryPlan *plan, Ndb *db, int v) {
  int r = 0;
  Uint64 val = 33;
  
  delete_row(plan, db, "incr_unit_test_1", v);
  delete_row(plan, db, "incr_unit_test_2", v);
  
  detail(v, "Test 1: INCR non-existing row, create=false\n");
  r = do_incr(v, plan, db, "incr_unit_test_1", false, true, &val);
  detail(v, "Result - NDB=%d Val=%llu \n\n", r, (long long unsigned) val);
  require(r == 626);
  require(val == 33);

  detail(v, "Test 2: INCR non-existing row, create=true, update = false\n");
  r = do_incr(v, plan, db, "incr_unit_test_1", true, false, &val);
  detail(v, "Result - NDB=%d Val=%llu \n\n", r, val);
  require(r == 626); // the transaction gets a 626 even if the insert succeeds
  require(val == -1ULL);

  detail(v, "test 3: READ row created in test 2\n");
  r = do_incr(v, plan, db, "incr_unit_test_1", false, false, &val);
  detail(v, "Result - NDB=%d Val=%llu \n\n", r, (long long unsigned) val);
  require(r == 0);
  require(val == -1ULL);

  detail(v, "Test 4: INCR non-existing row, create=true\n");
  r = do_incr(v, plan, db, "incr_unit_test_2", true, true, &val);
  detail(v, "Result - NDB=%d Val=%llu \n\n", r, (long long unsigned) val);
  require(r == 626);
  require(val == 0);
  
  detail(v, "Test 5: INCR existing row, create=false\n");
  r = do_incr(v, plan, db, "incr_unit_test_2", false, true, &val);
  detail(v, "Result - NDB=%d Val=%llu \n\n", r, (long long unsigned) val);
  require(r == 0);
  require(val == 1);  

  detail(v, "Test 6: INCR existing row, create=true\n");
  r = do_incr(v, plan, db, "incr_unit_test_2", true, true, &val);
  detail(v, "Result - NDB=%d Val=%llu \n\n", r, (long long unsigned) val);
  require(r == 630);   // the insert failed but the update succeeded
  require(val == 2);
   
  pass;
}


int do_incr(int v, QueryPlan *plan, Ndb *db, const char *akey, 
            bool create, bool update, Uint64 *val) {
  int r;
  char key[50];
  char ndbkeybuffer[300];
  char ndbrowbuffer1[16384];
  char ndbrowbuffer2[16384];
  
  strcpy(key, akey);
  
  Operation op1(plan, OP_READ, ndbkeybuffer); 
  Operation op(plan); 

  op.key_buffer = ndbkeybuffer; 
  op.buffer = ndbrowbuffer1;
  const NdbOperation *ndbop1 = 0;
  const NdbOperation *ndbop2 = 0;
  const NdbOperation *ndbop3 = 0;
  
  /* Set the Key */
  op.clearKeyNullBits();
  op.setKeyPart(COL_STORE_KEY, key, strlen(key));
  
  /* Set the Row */
  op.clearNullBits();
  op.setColumn(COL_STORE_KEY, key, strlen(key));
  op.setColumnBigUnsigned(COL_STORE_CAS, 0ULL);

  NdbTransaction *tx = op.startTransaction(db);
  if(! tx) {
    int r =  db->RESULT;
    detail(v, " get tx: %d \n", r);
    return r;
  }
  
  // NdbOperation #1: read
  {
    op1.buffer = ndbrowbuffer2;
    NdbOperation::LockMode lmod = NdbOperation::LM_Exclusive;
    
    ndbop1 = op1.readTuple(tx, lmod);
    if(! ndbop1) {
      detail(v, "  op 1 error: %d \n", tx->getNdbError().code);
      tx->close();
      return -1;
    }
  }
  
  
  // NdbOperation #2:   insert
  // If the create flag is set, create a record with "initial - delta", i.e. -1
  if(create) {    
    NdbOperation::OperationOptions options;
    op.setColumnBigUnsigned(COL_STORE_MATH, -1ULL);
    options.optionsPresent = NdbOperation::OperationOptions::OO_ABORTOPTION;  
    options.abortOption = NdbOperation::AO_IgnoreError;
    ndbop2 = op.insertTuple(tx, & options); 
    if(! ndbop2) {
      detail(v, "  op 2 error: %d \n", tx->RESULT);
      tx->close();
      return(-2);
    }
  }
  
  // NdbOperation #3:  update (interpreted)
  if (update) {
    NdbOperation::OperationOptions options;
    const Uint32 program_size = 10;
    Uint32 program[program_size];
    NdbInterpretedCode incr_code(plan->table, program, program_size);
    
    if(incr_code.add_val(plan->math_column_id, (Uint32) 1)) return -4;
    if(incr_code.interpret_exit_ok())                       return -5;
    if(incr_code.finalise())                                return -6;
    
    options.optionsPresent = NdbOperation::OperationOptions::OO_INTERPRETED;
    options.interpretedCode = & incr_code;

    ndbop3 = op.updateTuple(tx,  & options);
    if(! ndbop3) {
      detail(v,"  op 3 error: %d \n", tx->getNdbError().code);
      tx->close();
      return(-3);
    }
    
  }
  
  tx->execute(NdbTransaction::Commit);
  r = tx->getNdbError().code;
  detail(v, "    transaction: %d", r);
  if(ndbop1) detail(v, "    read: %d", ndbop1->RESULT);
  if(ndbop2) detail(v, "    insert: %d", ndbop2->RESULT);
  if(ndbop3) detail(v, "    update: %d", ndbop3->RESULT);
  detail(v, "\n");
  
  if(ndbop1->RESULT == 0) 
    *val = op1.getBigUnsignedValue(COL_STORE_MATH) + (update ? 1 : 0);
  else if(create)
    *val = -1ULL + (update ? 1 : 0);
  
  tx->close();
  return r;
}