/*
 Copyright (c) 2014, 2016 , 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
 as published by the Free Software Foundation; version 2 of
 the License.
 
 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 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 <NdbApi.hpp>

#include "adapter_global.h"
#include "js_wrapper_macros.h"
#include "Record.h"
#include "NativeMethodCall.h"
#include "NdbWrapperErrors.h"
#include "ScanOperation.h"

using namespace v8;

V8WrapperFn newScanOperation;
V8WrapperFn prepareAndExecute;
V8WrapperFn getOperationError;
V8WrapperFn scanNextResult;
V8WrapperFn scanFetchResults;
V8WrapperFn ScanOperation_close;
V8WrapperFn getNdbError;
V8WrapperFn ScanOp_readBlobResults;

class ScanOperationEnvelopeClass : public Envelope {
public: 
  ScanOperationEnvelopeClass() : Envelope("ScanOperation") {
    addMethod("getNdbError", getNdbError<ScanOperation>);
    addMethod("prepareAndExecute", prepareAndExecute);
    addMethod("fetchResults", scanFetchResults);
    addMethod("nextResult", scanNextResult);
    addMethod("close", ScanOperation_close);
    addMethod("readBlobResults", ScanOp_readBlobResults);
  }
};

ScanOperationEnvelopeClass ScanOperationEnvelope;

Envelope * getScanOperationEnvelope() {
  return & ScanOperationEnvelope;
}


// Constructor wrapper
void newScanOperation(const Arguments &args) {
  EscapableHandleScope scope(args.GetIsolate());
  ScanOperation * s = new ScanOperation(args);
  Local<Value> wrapper = ScanOperationEnvelope.wrap(s);
  // freeFromGC: Disabled as it leads to segfaults during garbage collection
  // ScanOperationEnvelope.freeFromGC(helper, wrapper);
  args.GetReturnValue().Set(scope.Escape(wrapper));
}

// void prepareAndExecute() 
// ASYNC
void prepareAndExecute(const Arguments &args) {
  EscapableHandleScope scope(args.GetIsolate());
  DEBUG_MARKER(UDEB_DEBUG);
  REQUIRE_ARGS_LENGTH(1);
  typedef NativeMethodCall_0_<int, ScanOperation> MCALL;
  MCALL * mcallptr = new MCALL(& ScanOperation::prepareAndExecute, args);
  mcallptr->errorHandler = getNdbErrorIfLessThanZero;
  mcallptr->runAsync();
  
  args.GetReturnValue().SetUndefined();
}

// void close()
// ASYNC
void ScanOperation_close(const Arguments & args) {
  typedef NativeVoidMethodCall_0_<ScanOperation> NCALL;
  NCALL * ncallptr = new NCALL(& ScanOperation::close, args);
  ncallptr->runAsync();
  args.GetReturnValue().SetUndefined();
}

// int nextResult(buffer) 
// IMMEDIATE
void scanNextResult(const Arguments & args) {
  DEBUG_MARKER(UDEB_DETAIL);
  EscapableHandleScope scope(args.GetIsolate());
  typedef NativeMethodCall_1_<int, ScanOperation, char *> MCALL;
  MCALL mcall(& ScanOperation::nextResult, args);
  mcall.run();
  args.GetReturnValue().Set(scope.Escape(mcall.jsReturnVal()));
}


// int fetchResults(buffer, forceSend, callback) 
// ASYNC; CALLBACK GETS (Null-Or-Error, Int) 
void scanFetchResults(const Arguments & args) {
  DEBUG_MARKER(UDEB_DETAIL);
  REQUIRE_ARGS_LENGTH(3);
  typedef NativeMethodCall_2_<int, ScanOperation, char *, bool> MCALL;
  MCALL * ncallptr = new MCALL(& ScanOperation::fetchResults, args);
  ncallptr->errorHandler = getNdbErrorIfLessThanZero;
  ncallptr->runAsync();
  args.GetReturnValue().SetUndefined();
}

void ScanOp_readBlobResults(const Arguments & args) {
  ScanOperation * op = unwrapPointer<ScanOperation *>(args.Holder());
  op->readBlobResults(args);
}

#define WRAP_CONSTANT(TARGET, X) DEFINE_JS_INT(TARGET, #X, NdbScanOperation::X)

void ScanHelper_initOnLoad(Handle<Object> target) {
  Local<Object> scanObj = Object::New(Isolate::GetCurrent());
  Local<String> scanKey = NEW_SYMBOL("Scan");
  target->Set(scanKey, scanObj);

  DEFINE_JS_FUNCTION(scanObj, "create", newScanOperation);

  Local<Object> ScanHelper = Object::New(Isolate::GetCurrent());
  Local<Object> ScanFlags =  Object::New(Isolate::GetCurrent());

  scanObj->Set(NEW_SYMBOL("helper"), ScanHelper);
  scanObj->Set(NEW_SYMBOL("flags"), ScanFlags);

  WRAP_CONSTANT(ScanFlags, SF_TupScan);
  WRAP_CONSTANT(ScanFlags, SF_DiskScan);
  WRAP_CONSTANT(ScanFlags, SF_OrderBy);
  WRAP_CONSTANT(ScanFlags, SF_OrderByFull);
  WRAP_CONSTANT(ScanFlags, SF_Descending);
  WRAP_CONSTANT(ScanFlags, SF_ReadRangeNo);
  WRAP_CONSTANT(ScanFlags, SF_MultiRange);
  WRAP_CONSTANT(ScanFlags, SF_KeyInfo);
  
  DEFINE_JS_INT(ScanHelper, "table_record", SCAN_TABLE_RECORD);
  DEFINE_JS_INT(ScanHelper, "index_record", SCAN_INDEX_RECORD);
  DEFINE_JS_INT(ScanHelper, "lock_mode", SCAN_LOCK_MODE);
  DEFINE_JS_INT(ScanHelper, "bounds", SCAN_BOUNDS);
  DEFINE_JS_INT(ScanHelper, "flags", SCAN_OPTION_FLAGS);
  DEFINE_JS_INT(ScanHelper, "batch_size", SCAN_OPTION_BATCH_SIZE);
  DEFINE_JS_INT(ScanHelper, "parallel", SCAN_OPTION_PARALLELISM);
  DEFINE_JS_INT(ScanHelper, "filter_code", SCAN_FILTER_CODE);
}