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/*
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 vm.h
 * @author Christoph Jentzsch <jentzsch.simulationsoftware@gmail.com>
 * @author Gav Wood <i@gavwood.com>
 * @date 2014
 * vm test functions.
 */

#pragma once

#include <fstream>
#include <cstdint>
#include <boost/test/unit_test.hpp>
#include <json_spirit/json_spirit.h>
#include <libdevcore/Log.h>
#include <libdevcore/CommonIO.h>
#include <libevmcore/Instruction.h>
#include <libevm/ExtVMFace.h>
#include <libevm/VM.h>
#include <liblll/Compiler.h>
#include <libethereum/Transaction.h>
#include <libethereum/ExtVM.h>
#include <libethereum/State.h>
#include "TestHelper.h"

namespace dev { namespace test {

struct FakeExtVMFailure : virtual Exception {};

class FakeExtVM: public eth::ExtVMFace
{
public:
    FakeExtVM() = default;
    FakeExtVM(eth::BlockInfo const& _previousBlock, eth::BlockInfo const& _currentBlock, unsigned _depth = 0);

    virtual u256 store(u256 _n) override { return std::get<2>(addresses[myAddress])[_n]; }
    virtual void setStore(u256 _n, u256 _v) override { std::get<2>(addresses[myAddress])[_n] = _v; }
    virtual u256 balance(Address _a) override { return std::get<0>(addresses[_a]); }
    virtual void subBalance(u256 _a) override { std::get<0>(addresses[myAddress]) -= _a; }
    virtual u256 txCount(Address _a) override { return std::get<1>(addresses[_a]); }
    virtual void suicide(Address _a) override { std::get<0>(addresses[_a]) += std::get<0>(addresses[myAddress]); addresses.erase(myAddress); }
    virtual bytes const& codeAt(Address _a) override { return std::get<3>(addresses[_a]); }
    virtual h160 create(u256 _endowment, u256& io_gas, bytesConstRef _init, eth::OnOpFunc const&) override;
    virtual bool call(Address _receiveAddress, u256 _value, bytesConstRef _data, u256& io_gas, bytesRef _out, eth::OnOpFunc const&, Address, Address) override;
    void setTransaction(Address _caller, u256 _value, u256 _gasPrice, bytes const& _data);
    void setContract(Address _myAddress, u256 _myBalance, u256 _myNonce, std::map<u256, u256> const& _storage, bytes const& _code);
    void set(Address _a, u256 _myBalance, u256 _myNonce, std::map<u256, u256> const& _storage, bytes const& _code);
    void reset(u256 _myBalance, u256 _myNonce, std::map<u256, u256> const& _storage);
    void push(json_spirit::mObject& o, std::string const& _n, u256 _v);
    void push(json_spirit::mArray& a, u256 _v);
    u256 doPosts();
    json_spirit::mObject exportEnv();
    void importEnv(json_spirit::mObject& _o);
    json_spirit::mObject exportState();
    void importState(json_spirit::mObject& _object);
    json_spirit::mObject exportExec();
    void importExec(json_spirit::mObject& _o);
    json_spirit::mArray exportCallCreates();
    void importCallCreates(json_spirit::mArray& _callcreates);

    eth::OnOpFunc simpleTrace();

    std::map<Address, std::tuple<u256, u256, std::map<u256, u256>, bytes>> addresses;
    eth::Transactions callcreates;
    bytes thisTxData;
    bytes thisTxCode;
    u256 gas;
};


} } // Namespace Close