/*
	This file is part of cpp-ethereum.

	cpp-ethereum 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, either version 3 of the License, or
	(at your option) any later version.

	cpp-ethereum 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 cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file state.cpp
 * @author Christoph Jentzsch <cj@ethdev.com>
 * @date 2014
 * State test functions.
 */

#include <boost/filesystem/operations.hpp>
#include <boost/test/unit_test.hpp>
#include "JsonSpiritHeaders.h"
#include <libdevcore/CommonIO.h>
#include <libethereum/BlockChain.h>
#include <libethereum/State.h>
#include <libethereum/ExtVM.h>
#include <libethereum/Defaults.h>
#include <libevm/VM.h>
#include "TestHelper.h"

using namespace std;
using namespace json_spirit;
using namespace dev;
using namespace dev::eth;
using namespace dev::eth;

namespace dev {  namespace test {

LastHashes lastHashes(u256 _currentBlockNumber)
{
	LastHashes ret;
	for (u256 i = 1; i <= 256 && i <= _currentBlockNumber; ++i)
		ret.push_back(sha3(toString(_currentBlockNumber - i)));
	return ret;
}



void doStateTests(json_spirit::mValue& v, bool _fillin)
{
	processCommandLineOptions();

	for (auto& i: v.get_obj())
	{
		cerr << i.first << endl;
		mObject& o = i.second.get_obj();

		BOOST_REQUIRE(o.count("env") > 0);
		BOOST_REQUIRE(o.count("pre") > 0);
		BOOST_REQUIRE(o.count("transaction") > 0);

		ImportTest importer(o, _fillin);

		State theState = importer.m_statePre;
		bytes tx = importer.m_transaction.rlp();
		bytes output;

		try
		{
			theState.execute(lastHashes(importer.m_environment.currentBlock.number), tx, &output);
		}
		catch (Exception const& _e)
		{
			cnote << "state execution did throw an exception: " << diagnostic_information(_e);
		}
		catch (std::exception const& _e)
		{
			cnote << "state execution did throw an exception: " << _e.what();
		}

		if (_fillin)
			importer.exportTest(output, theState);
		else
		{
			BOOST_REQUIRE(o.count("post") > 0);
			BOOST_REQUIRE(o.count("out") > 0);

			// check output
			checkOutput(output, o);

			// check logs
			checkLog(theState.pending().size() ? theState.log(0) : LogEntries(), importer.m_environment.sub.logs);

			// check addresses
			auto expectedAddrs = importer.m_statePost.addresses();
			auto resultAddrs = theState.addresses();
			for (auto& expectedPair : expectedAddrs)
			{
				auto& expectedAddr = expectedPair.first;
				auto resultAddrIt = resultAddrs.find(expectedAddr);
				if (resultAddrIt == resultAddrs.end())
					BOOST_ERROR("Missing expected address " << expectedAddr);
				else
				{
					BOOST_CHECK_MESSAGE(importer.m_statePost.balance(expectedAddr) ==  theState.balance(expectedAddr), expectedAddr << ": incorrect balance " << theState.balance(expectedAddr) << ", expected " << importer.m_statePost.balance(expectedAddr));
					BOOST_CHECK_MESSAGE(importer.m_statePost.transactionsFrom(expectedAddr) ==  theState.transactionsFrom(expectedAddr), expectedAddr << ": incorrect txCount " << theState.transactionsFrom(expectedAddr) << ", expected " << importer.m_statePost.transactionsFrom(expectedAddr));
					BOOST_CHECK_MESSAGE(importer.m_statePost.code(expectedAddr) == theState.code(expectedAddr), expectedAddr << ": incorrect code");

					checkStorage(importer.m_statePost.storage(expectedAddr), theState.storage(expectedAddr), expectedAddr);
				}
			}
			checkAddresses<map<Address, u256> >(expectedAddrs, resultAddrs);
		}
	}
}
} }// Namespace Close

BOOST_AUTO_TEST_SUITE(StateTests)

BOOST_AUTO_TEST_CASE(stExample)
{
	dev::test::executeTests("stExample", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stSystemOperationsTest)
{
	dev::test::executeTests("stSystemOperationsTest", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stPreCompiledContracts)
{
	dev::test::executeTests("stPreCompiledContracts", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stLogTests)
{
	dev::test::executeTests("stLogTests", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stRecursiveCreate)
{
	dev::test::executeTests("stRecursiveCreate", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stInitCodeTest)
{
	dev::test::executeTests("stInitCodeTest", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stTransactionTest)
{
	dev::test::executeTests("stTransactionTest", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stSpecialTest)
{
	dev::test::executeTests("stSpecialTest", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stRefundTest)
{
	dev::test::executeTests("stRefundTest", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stBlockHashTest)
{
	dev::test::executeTests("stBlockHashTest", "/StateTests", dev::test::doStateTests);
}

BOOST_AUTO_TEST_CASE(stCreateTest)
{
	for (int i = 1; i < boost::unit_test::framework::master_test_suite().argc; ++i)
	{
		string arg = boost::unit_test::framework::master_test_suite().argv[i];
		if (arg == "--createtest")
		{
			if (boost::unit_test::framework::master_test_suite().argc <= i + 2)
			{
				cnote << "usage: ./testeth --createtest <PathToConstructor> <PathToDestiny>\n";
				return;
			}
			try
			{
				cnote << "Populating tests...";
				json_spirit::mValue v;
				string s = asString(dev::contents(boost::unit_test::framework::master_test_suite().argv[i + 1]));
				BOOST_REQUIRE_MESSAGE(s.length() > 0, "Content of " + (string)boost::unit_test::framework::master_test_suite().argv[i + 1] + " is empty.");
				json_spirit::read_string(s, v);
				dev::test::doStateTests(v, true);
				writeFile(boost::unit_test::framework::master_test_suite().argv[i + 2], asBytes(json_spirit::write_string(v, true)));
			}
			catch (Exception const& _e)
			{
				BOOST_ERROR("Failed state test with Exception: " << diagnostic_information(_e));
			}
			catch (std::exception const& _e)
			{
				BOOST_ERROR("Failed state test with Exception: " << _e.what());
			}
		}
	}
}

BOOST_AUTO_TEST_CASE(userDefinedFileState)
{
	dev::test::userDefinedTest("--statetest", dev::test::doStateTests);
}

BOOST_AUTO_TEST_SUITE_END()