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/*

 *

 *  Copyright (C) 2010  Mattias Runge

 *

 *  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; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  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 Street, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

#include "Console.h"

#include <boost/lexical_cast.hpp>

#include <boost/algorithm/string/trim.hpp>

#include <boost/algorithm/string/split.hpp>

#include "net/Manager.h"

#include "vm/Manager.h"

#include "common/common.h"

namespace atom {

namespace vm {

namespace plugin {

logging::Logger Console::LOG("vm::plugin::Console");

net::ClientId Console::current_client_id_;

Console::Console(boost::asio::io_service& io_service, unsigned int port) : Plugin(io_service)

{

    this->name_ = "console";

    Console::current_client_id_ = 0;

    net::Manager::Instance()->ConnectSlots(net::Manager::SignalOnNewState::slot_type(&Console::SlotOnNewState, this, _1, _2, _3).track(this->tracker_),

                                           net::Manager::SignalOnNewData::slot_type(&Console::SlotOnNewData, this, _1, _2, _3).track(this->tracker_));

    this->ExportFunction("ConsoleExport_PromptRequest",        Console::Export_PromptRequest);

    this->ExportFunction("ConsoleExport_AutoCompleteResponse", Console::Export_AutoCompleteResponse);

    this->ExportFunction("ConsoleExport_LogToClient",          Console::Export_LogToClient);

    this->ExportFunction("ConsoleExport_DisconnectClient",     Console::Export_DisconnectClient);

    try

    {

        this->server_id_ = net::Manager::Instance()->StartServer(net::PROTOCOL_TCP, port);

        LOG.Info("Started TCP server on port " + boost::lexical_cast<std::string>(port) + ".");

        LOG.Debug("Server id is " + boost::lexical_cast<std::string>(this->server_id_) + ".");

    }

    catch (std::runtime_error& e)

    {

        LOG.Error(e.what());

    }

}

Console::~Console()

{

    net::Manager::Instance()->StopServer(this->server_id_);

    this->server_id_ = 0;

}

void Console::InitializeDone()

{

    Plugin::InitializeDone();

    this->ImportFunction("Console_AutocompleteRequest");

    this->ImportFunction("Console_PromptResponse");

    this->ImportFunction("Console_NewConnection");

}

void Console::CallOutput(unsigned int request_id, std::string output)

{

    std::string packet = "TEXT";

    packet += common::PadNumber(output.length() + 1, 4);

    packet += output;

    net::Manager::Instance()->SendTo(request_id, packet);

}

void Console::SlotOnNewData(net::ClientId client_id, net::ServerId server_id, common::Byteset data)

{

    if (server_id != this->server_id_)

    {

        return;

    }

    this->io_service_.post(boost::bind(&Console::SlotOnNewDataHandler, this, client_id, server_id, data));

}

void Console::SlotOnNewState(net::ClientId client_id, net::ServerId server_id, net::ClientState client_state)

{

    if (server_id != this->server_id_)

    {

        return;

    }

    this->io_service_.post(boost::bind(&Console::SlotOnNewStateHandler, this, client_id, server_id, client_state));

}

void Console::SlotOnNewDataHandler(net::ClientId client_id, net::ServerId server_id, common::Byteset data)

{

    v8::Context::Scope context_scope(vm::Manager::Instance()->GetContext());

    //LOG.Debug(std::string(__FUNCTION__) + " called!");

    std::string s(data.ToCharString());

    std::string command = s.substr(0, 4);

    unsigned int payload_length = boost::lexical_cast<unsigned int>(s.substr(4, 4));

    Console::current_client_id_ = client_id;

    if (command == "COMP")

    {

        ArgumentListPointer call_arguments = ArgumentListPointer(new ArgumentList);

        call_arguments->push_back(v8::Integer::New(boost::lexical_cast<unsigned int>(client_id)));

        call_arguments->push_back(v8::Integer::New(boost::lexical_cast<unsigned int>(s.substr(8, 4))));

        call_arguments->push_back(v8::String::New(s.substr(12).data()));

        if (!this->Call(client_id, "Console_AutocompleteRequest", call_arguments))

        {

            LOG.Error("Console_AutocompleteRequest failed, we are now in an undefined state!");

        }

    }

    else if (command == "RESP")

    {

        ArgumentListPointer call_arguments = ArgumentListPointer(new ArgumentList);

        call_arguments->push_back(v8::Integer::New(boost::lexical_cast<unsigned int>(client_id)));

        call_arguments->push_back(v8::String::New(s.substr(8).data()));

        if (!this->Call(client_id, "Console_PromptResponse", call_arguments))

        {

            LOG.Error("Console_PromptResponse failed, we are now in an undefined state!");

        }

    }

    else

    {

        LOG.Error("Unknown packat received, we are now in an undefined state!");

    }

    Console::current_client_id_ = 0;

}

void Console::SlotOnNewStateHandler(net::ClientId client_id, net::ServerId server_id, net::ClientState client_state)

{

    v8::Context::Scope context_scope(vm::Manager::Instance()->GetContext());

    //LOG.Debug(std::string(__FUNCTION__) + " called!");

    if (client_state == net::CLIENT_STATE_DISCONNECTED)

    {

        LOG.Info("Client " + boost::lexical_cast<std::string>(client_id) + " has disconnected.");

    }

    else if (client_state == net::CLIENT_STATE_CONNECTED)

    {

        LOG.Info("Client " + boost::lexical_cast<std::string>(client_id) + " has connected.");

        Console::current_client_id_ = client_id;

        ArgumentListPointer call_arguments = ArgumentListPointer(new ArgumentList);

        call_arguments->push_back(v8::Integer::New(boost::lexical_cast<unsigned int>(client_id)));

        if (!this->Call(client_id, "Console_NewConnection", call_arguments))

        {

            LOG.Error("Console_NewConnection failed, we are now in an undefined state!");

        }

        Console::current_client_id_ = 0;

    }

    else

    {

        LOG.Debug("Got state: " + boost::lexical_cast<std::string>((int)client_state));

    }

}

Value Console::Export_PromptRequest(const v8::Arguments& args)

{

    v8::Context::Scope context_scope(vm::Manager::Instance()->GetContext());

    //LOG.Debug(std::string(__FUNCTION__) + " called!");

    if (args.Length() < 2)

    {

        LOG.Error(std::string(__FUNCTION__) + ": To few arguments.");

        return v8::Boolean::New(false);

    }

    v8::String::AsciiValue prompt(args[1]);

    std::string packet = "PROM";

    packet += common::PadNumber(prompt.length() + 1, 4);

    packet += *prompt;

    net::Manager::Instance()->SendTo(args[0]->Uint32Value(), packet);

    return v8::Boolean::New(true);

}

Value Console::Export_AutoCompleteResponse(const v8::Arguments& args)

{

    v8::Context::Scope context_scope(vm::Manager::Instance()->GetContext());

    //LOG.Debug(std::string(__FUNCTION__) + " called!");

    if (args.Length() < 2)

    {

        LOG.Error(std::string(__FUNCTION__) + ": To few arguments.");

        return v8::Boolean::New(false);

    }

    v8::String::AsciiValue result(args[1]);

    std::string packet = "COMP";

    packet += common::PadNumber(result.length() + 1, 4);

    packet += *result;

    net::Manager::Instance()->SendTo(args[0]->Uint32Value(), packet);

    return v8::Boolean::New(true);

}

Value Console::Export_LogToClient(const v8::Arguments& args)

{

    v8::Context::Scope context_scope(vm::Manager::Instance()->GetContext());

    //LOG.Debug(std::string(__FUNCTION__) + " called!");

    if (args.Length() < 2)

    {

        LOG.Error(std::string(__FUNCTION__) + ": To few arguments.");

        return v8::Boolean::New(false);

    }

    v8::String::AsciiValue text(args[1]);

    std::string line = *text;

    std::string packet = "TEXT";

    packet += common::PadNumber(line.length() + 1, 4);

    packet += line;

    net::Manager::Instance()->SendTo(args[0]->Uint32Value(), packet);

    return v8::Boolean::New(true);

}

Value Console::Export_DisconnectClient(const v8::Arguments& args)

{

    v8::Context::Scope context_scope(vm::Manager::Instance()->GetContext());

    //LOG.Debug(std::string(__FUNCTION__) + " called!");

    if (args.Length() < 1)

    {

        LOG.Error(std::string(__FUNCTION__) + ": To few arguments.");

        return v8::Boolean::New(false);

    }

    net::Manager::Instance()->Disconnect(args[0]->Uint32Value());

    return v8::Boolean::New(true);

}

}; // namespace plugin

}; // namespace vm

}; // namespace atom