/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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 3 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, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "plLoginDialog.h"
#include "resource.h"
#include "plNetCommon/plNetCommonConstants.h"
#include "plNetMessage/plNetMessage.h"
// #include "plHttpServer/plHttpResponse.h"
#include "plSDL/plSDL.h"
#include "plFile/hsFiles.h"
#include "plNetMessage/plNetCommonMessage.h"

// 'this' : used in base member initializer list
#pragma warning(disable:4355)

#define kAuthTimedOut WM_USER+2

plLoginDialog::plLoginDialog( HWND parentWnd )
:   plDialog(IDD_DIALOG_LOGIN)
,   fParentWnd( parentWnd )
,   fLoginBtn(this, IDC_LOGIN_LOGIN, plDelegate(this,(TDelegate)ILogin))
,   fCancelBtn(this, IDC_LOGIN_CANCEL, plDelegate(this,(TDelegate)IExit))
,   fAccountName(this,IDC_LOGIN_USERNAME)
,   fPassword(this,IDC_LOGIN_PASSWORD)
,   fLobbyList(this,IDC_LOGIN_LOBBYLIST)
,   fLobbyText(this, IDC_LOGIN_STATIC_SERVER)
,   fRememberPassword(this, IDC_REMEMBER_PASSWORD, plDelegate(this, (TDelegate)IOnRememberPwdChanged))
,   fCancelled(false)
,   fAutoLogin(false)
#ifndef PLASMA_EXTERNAL_RELEASE
,   fServerQueryBtn(this, IDC_SERVER_QUERY_BTN)
#endif
{
    fLobbyList.fSelectionEndOkDelegate = plDelegate(this,(TDelegate)SelectedLobbyChanged);
    fLobbyList.fEditUpdateDelegate = plDelegate(this,(TDelegate)SelectedLobbyTextEdited);
    fLobbyList.fKillFocusDelegate = plDelegate(this,(TDelegate)OnLobbyListLostFocus);
#ifndef PLASMA_EXTERNAL_RELEASE
    fServerQueryBtn.fClickDelegate = plDelegate(this,(TDelegate)ServerQueryBtnClicked);
#endif
}

std::string plLoginDialog::MakeSafeLobbyServerName(const std::string & value)
{
    return "";
}


void plLoginDialog::SelectedLobbyChanged()
{
    fLobbyVal.SetValue(fLobbyList.GetValue().c_str());
    fLobbyList.SetEdited(false);
}

void plLoginDialog::SelectedLobbyTextEdited()
{
    fLobbyVal.SetValue(fLobbyList.GetValue().c_str());
    fLobbyList.SetEdited(true);
}

// Ugh
#ifdef PLASMA_EXTERNAL_RELEASE
#include <time.h>
#endif

bool plLoginDialog::RefreshLobbyList()
{
    fStatusBar.SetText(L"Refreshing lobby server list...");

    plStringList lobbies;
    std::vector<std::wstring> wLobbies;
    GetLobbyList(lobbies);

    // Strip off the shard name and just leave the address
    for (int i = 0; i < lobbies.size(); i++)
    {
        std::string& str = lobbies[i];

        std::string::size_type endofname = str.find('\t');
        if (endofname != std::string::npos)
            str.erase(str.begin() + endofname, str.end());

        wchar_t *wLobby = hsStringToWString(str.c_str());
        wLobbies.push_back(wLobby);
        delete [] wLobby;
    }

    fLobbyList.Empty();

#ifdef PLASMA_EXTERNAL_RELEASE
    // In release mode, put the user in a random lobby for rudimentary load balancing
    int numLobbies = lobbies.size();
    if (numLobbies > 0)
    {
        srand(time(NULL));
        int rnum = rand();
        int whichLobby = rnum % numLobbies;

        fLobbyList.AddString(wLobbies[whichLobby].c_str());
    }

    fLobbyList.SetCurrent(0);
#else
    if (AllowSinglePlayerLobby())
        fLobbyList.AddString(L"Single Player");
    fLobbyList.AddStrings(wLobbies);

    wchar_t *wLobby = hsStringToWString(fLobbyVal.GetValue().c_str());
    int index = fLobbyList.FindStringExact(wLobby);
    if (index==LB_ERR && fLobbyVal.GetValue().length()>0)
    {
        fLobbyList.AddString(wLobby);
        index = fLobbyList.FindStringExact(wLobby);
    }
    delete [] wLobby;

    fLobbyList.SetCurrent((index!=LB_ERR)?index:0);
#endif // PLASMA_EXTERNAL_RELEASE

    SelectedLobbyChanged();

    fStatusBar.SetText(L"");
    return true;
}

void plLoginDialog::OnLobbyListLostFocus()
{
    std::string value = fLobbyList.GetValue();
    if (value.length()==0)
    {
        fLobbyList.SetCurrent(0);
        fLobbyList.SetValue(MakeSafeLobbyServerName(fLobbyList.GetValue()).c_str());
        SelectedLobbyChanged();
    }
}

#if 0
void plLoginDialog::UpdateCtrls()
{
    bool networkEnabled = IsNetworkPlayEnabled();
    bool loggedIn = GetLoggedIn();
    bool loggingIn = GetLoggingIn();
    bool loggedOut = GetLoggedOut();
    if (!networkEnabled && (loggedIn || loggingIn))
    {
        Logout();

        // these don't do anything.  need to set the vars in fMainDIalog?
        loggedIn = false;   
        loggingIn = false;
        loggedOut = true;
    }
}
#endif

bool plLoginDialog::IsNetworkPlayDisabled()
{
#ifdef PLASMA_EXTERNAL_RELEASE
    return false;
#else
    xtl::istring tmp = fLobbyVal.GetValue().c_str();
    return (tmp.compare("single player")==0);
#endif
}

bool plLoginDialog::IsNetworkPlayEnabled()
{
    return !IsNetworkPlayDisabled();
}

void plLoginDialog::OnInitDialog()
{
    plDialog::OnInitDialog();

    if ( fParentWnd )
        SetParent( Handle(), fParentWnd );

    fStatusBar.OpenWindow(this,true);

#ifdef PLASMA_EXTERNAL_RELEASE
    fLobbyList.Show(false);
    fLobbyText.Show(false);
#endif

#ifndef PLASMA_EXTERNAL_RELEASE
    fServerQueryBtn.Show(true);
#endif

    bool rememberPwd = (fRememberPasswordVal.GetValue()=="true");
    fAccountName.SetValue(fAccountNameVal.GetValue().c_str());
    if (rememberPwd)
    {
        int len = atoi(fPasswordLen.GetValue().c_str());
        std::string fakePwd(len, '*');
        fPassword.SetValue(fakePwd.c_str());
    }

    fRememberPassword.Check(rememberPwd);

    RefreshLobbyList();

    if ( fAutoLogin )
        fLoginBtn.Click();

//  SetForegroundWindow(*this);
}

bool plLoginDialog::Login()
{
    int ret = DoModal();
    if (ret<0)
    {
        hsAssert(false, xtl::format("plLoginDialog failed to initialize, err code %d, GetLastError %d", 
            ret, GetLastError()).c_str());
    }

    return (ret != 0);
}

void plLoginDialog::ILogin()
{
    OnLoginClicked();

    fAccountNameVal.SetValue(fAccountName.GetValue().c_str());
    
    std::string pwd = fPassword.GetValue();
    int pwdSize = pwd.size();

    std::string fakePwd = "*" + std::string(pwdSize-1, '*');
    if (pwd != fakePwd) // user has entered a real pwd
    {
        fPasswordLen.SetValue(xtl::format("%d",pwd.size()).c_str());
        // MD5 HASH the pwd
        std::string hex;
        plChallengeResponse::HashPassword(pwd.c_str(), hex);
        fPasswordVal.SetValue(hex.c_str());
    }
    
    SetDataServerUserName(true, fAccountNameVal.GetValue().c_str());
    SetDataServerPassword(true, fPasswordVal.GetValue().c_str());
    SetDataServerUserName(false, fAccountNameVal.GetValue().c_str());
    SetDataServerPassword(false, fPasswordVal.GetValue().c_str());

    if (IsNetworkPlayEnabled())
        StartLogin();
    else
        CompleteLogin();
}

void plLoginDialog::IOnRememberPwdChanged()
{
    fRememberPasswordVal.SetValue(fRememberPassword.IsChecked() ? "true" : "false");
}

void plLoginDialog::IExit()
{
    fAccountNameVal.SetValue(fAccountName.GetValue().c_str());
    fPasswordVal.SetValue(fPassword.GetValue().c_str());
    fLobbyVal.SetValue(fLobbyList.GetValue().c_str());
    SetDataServerUserName(true, fAccountNameVal.GetValue().c_str());
    SetDataServerPassword(true, fPasswordVal.GetValue().c_str());
    SetDataServerUserName(false, fAccountNameVal.GetValue().c_str());
    SetDataServerPassword(false, fPasswordVal.GetValue().c_str());
    SHORT state = GetKeyState(VK_SHIFT);
    if (state&0x8000)
        EndDialogTrue();
    else
        EndDialogFalse();
    fCancelled=true;
}

int plLoginDialog::ICheckNetVersion(plNetMsgAuthenticateChallenge * msg)
{
    if (msg)
    {
        if (msg->GetVersionMajor() != plNetMessage::kVerMajor ||
            msg->GetVersionMinor() != plNetMessage::kVerMinor)
        {
            std::string str = xtl::format("Login Failed, client/server version mismatch, client %d.%d, server %d.%d",
                plNetMessage::kVerMajor, plNetMessage::kVerMinor, 
                msg->GetVersionMajor(),
                msg->GetVersionMinor());
            FailLogin(str.c_str());
            return hsFail;
        }
        return hsOK;
    }
    return hsFail;  
}

void plLoginDialog::HandleAuthChallenge(plNetMsgAuthenticateChallenge * msg)
{
    int cnt = msg->PeekBuffer(msg->GetNetCoreMsg()->GetData(),msg->GetNetCoreMsg()->GetLen());

    // check protocol version first, in case msg contents are hosed
    if (ICheckNetVersion(msg) == hsFail)
        return;     // version err

    if (msg->IsContinuing())
    {
        // Respond to the Challenge
        std::string hex = plChallengeResponse::GetBufferAsHexStr(msg->GetChallenge().data(), msg->GetChallenge().size(), true);
        fChallengeResponse.SetChallenge(hex);
        fChallengeResponse.GenerateResponse(fAccountNameVal.GetValue().c_str(),fPasswordVal.GetValue().c_str());
        KillTimer(*this,kAuthTimedOut);
        SendAuthenticateResponse();
    }
    else
    {
        FailLogin(msg->GetHelloResult());
    }
}

void plLoginDialog::HandleAccountAuthenticated(plNetMsgAccountAuthenticated * msg)
{
    int cnt = msg->PeekBuffer(msg->GetNetCoreMsg()->GetData(),msg->GetNetCoreMsg()->GetLen());
    if (msg->IsAuthenticated())
    {
        CompleteLogin();
    }
    else
    {
        FailLogin(msg->GetAuthResult());
    }
}


void plLoginDialog::StartLogin()
{
    fLoginBtn.SetEnabled(false);
    std::string value = fLobbyList.GetValue();
    if (value.length()==0)
    {
        fLobbyList.SetCurrent(0);
        fLobbyList.SetValue(MakeSafeLobbyServerName(fLobbyList.GetValue()).c_str());
        SelectedLobbyChanged();
    }
    fStatusBar.SetText(L"Authenticating...");
//  fMainDialog->InitNetCore();
//  fMainDialog->fLoginState = kLoggingIn;
//  fAccountTab.UpdateCtrls();
//  fPlayerTab.SetPlayerVault(nil);
    SendAuthenticateHello();
}

void plLoginDialog::CompleteLogin()
{
    if ( Handle() )
        fLoginBtn.SetEnabled(true);

    KillTimer(*this,kAuthTimedOut);

    fStatusBar.SetText(L"");
    if (IsNetworkPlayEnabled())
        NotifyConnected();
    else
        NotifyDisconnected();

    EndDialogTrue();
    
    GetClientManifests();
    UpdateAllCtrls();
}

void plLoginDialog::FailLogin(const char* str)
{
    fLoginBtn.SetEnabled(true);
    KillTimer(*this, kAuthTimedOut);
    fStatusBar.SetText(L"");
    hsMessageBoxWithOwner((void*)*this,str,"Error",hsMessageBoxNormal);
    Logout();
}

void plLoginDialog::FailLogin(int reasonCode)
{
    std::string str = xtl::format("Failed to login to lobby server %s: %s", 
        fLobbyVal.GetValue().c_str(), plNetMsgAccountAuthenticated::GetAuthResultString(reasonCode));
    FailLogin(str.c_str());
}

void plLoginDialog::TimeoutLogin()
{
    fLoginBtn.SetEnabled(true);

    wchar_t *wStr = hsStringToWString(xtl::format("Timed out logging into lobby server %s.", fLobbyVal.GetValue().c_str()).c_str());
    fStatusBar.SetText(wStr);
    delete [] wStr;

    KillTimer(*this, kAuthTimedOut);
    Logout();
}

void plLoginDialog::Logout()
{
    KillTimer(*this, kAuthTimedOut);
    SendLobbyLeave();
    //fMainDialog->ShutdownNetCore();
    NotifyDisconnected();
}

void plLoginDialog::SendLobbyLeave()
{
    plNetMsgLeave msg;
    msg.SetReason( plPlayerUpdateConstants::kPlayerQuitting );
    SendMsg(&msg,plNetAddress(fLobbyVal.GetValue().c_str(),plNetLobbyServerConstants::GetPort()));
    RemoveLobbyPeer();
}

#define MSG_TIMEOUT 8000
#include "../pnNetCommon/plNetAddress.h"

void plLoginDialog::SendAuthenticateHello()
{
    SetTimer(*this,kAuthTimedOut,MSG_TIMEOUT,nil);
    plNetMsgAuthenticateHello msg;
    msg.SetAccountName(fAccountNameVal.GetValue().c_str());
    msg.SetMaxPacketSize(GetPacketSize());
    SendMsg(&msg,plNetAddress(fLobbyVal.GetValue().c_str(),plNetLobbyServerConstants::GetPort()));
}

void plLoginDialog::SendAuthenticateResponse()
{
    SetTimer(*this,kAuthTimedOut,MSG_TIMEOUT,nil);
    plNetMsgAuthenticateResponse msg;
    msg.SetResponse(fChallengeResponse.GetResponse());
    SendMsg(&msg,plNetAddress(fLobbyVal.GetValue().c_str(),plNetLobbyServerConstants::GetPort()));
}

int plLoginDialog::CallDefaultProc( unsigned int message, unsigned int wParam, LONG lParam )
{
    switch (message)
    {
    case WM_TIMER:
        switch (wParam)
        {
        case kAuthTimedOut:
            TimeoutLogin();
            break;
        }
    }

    return 0;
}




/////////////////////////////////////////////////////////////////////////////
#ifndef PLASMA_EXTERNAL_RELEASE
#define kServerInfoFilename "server_info.html"

static void StringToLines(std::string str, plStringList & lines, bool includeBlankLines=true)
{
    xtl::trim(str);
    if (str.length()==0)
        return;
    str.append("\n");
    int pos;
    while ((pos=str.find("\n"))!=std::string::npos)
    {
        std::string line = xtl::trim(str.substr(0,pos).c_str());
        str.erase(0,pos+1);
        if (includeBlankLines || (!includeBlankLines && line.length()>0))
            lines.push_back(line);
    }
}

static void GetPathElements(std::string filename, plStringList & lst)
{
    int pos;
    while ((pos=filename.find_first_of("\\/"))!=std::string::npos)
    {
        std::string element = filename.substr(0,pos);
        filename.erase(0,pos+1);
        if (element.length())
            lst.push_back(element);
    }
}

struct SDLInfoParser
{
    std::string fFilename;
    std::string fDescriptorName;
    int         fVersion;
    void ParseString( const char * s )
    {
        std::string str = s;
        int p = str.find(",");
        fFilename = str.substr(0,p);
        str.erase(0,p+1);
        p = str.find(",");
        fDescriptorName = str.substr(0,p);
        str.erase(0,p+1);
        fVersion = atoi(str.c_str());

        p = fFilename.find_last_of("\\");
        if( p!=std::string::npos )
            fFilename.erase(0,p+1);
        p = fFilename.find_last_of("/");
        if( p!=std::string::npos )
            fFilename.erase(0,p+1);
    }
};


struct DescriptorReport
{
    int         fServerVersion;     // 0 means the descriptor is missing
    int         fClientVersion;
    DescriptorReport(): fServerVersion(0),fClientVersion(0){}
};

#define kStyleSheet \
    "<style>"   \
    "BODY {"    \
    "   font-size : 10pt;"  \
    "   font-family : Verdana, Geneva, Arial, Helvetica, sans-serif;"   \
    "}" \
    "TD {"  \
    "   font-size : 10pt;"  \
    "   font-family : Verdana, Geneva, Arial, Helvetica, sans-serif;"   \
    "}" \
    "PRE {" \
    "   margin-top : 0px;"  \
    "}" \
    ".SDLFile  { background-color : #FFFF99; }" \
    ".Title {"  \
    "   font-weight : bold;"    \
    "   text-align : center;"   \
    "   text-decoration : underline;"   \
    "}" \
    ".SectionHeader {"  \
    "   margin-bottom : 0px;"   \
    "}" \
    "</style>"

void plLoginDialog::ServerQueryBtnClicked()
{
    hsUNIXStream file;
    file.Open( kServerInfoFilename, "wt" );
    file.WriteString("<html>"kStyleSheet"<body>\n");

    try
    {
        typedef std::map< std::string, DescriptorReport > DescriptorReports;
        typedef std::map< std::string, DescriptorReports > FileReports;

        FileReports fileReports;


        /*plURL url;
        plHttpRequest request;
        plHttpResponse response;

        // read server build date etc.
        url.SetHost( fLobbyList.GetValue().c_str() );
        url.SetPort( 7676 );
        url.SetFile( "VersionInfo" );
        request.SetUrl( url );
        request.SetType( plHttpRequest::kGet );
        if ( !request.MakeRequest( response ) )
            throw 0;
        file.WriteString("<h3 class=SectionHeader>Server Info</h3>\n" );
        file.WriteString( "<pre>\n" );
        file.WriteString( response.c_str() );
        file.WriteString( "</pre>\n" );

        // get server's SDL info
        url.SetFile( "SDLInfo" );
        request.SetUrl( url );
        if ( !request.MakeRequest( response ) )
            throw 0;
        plStringList lines;
        StringToLines( response, lines, false );
        SDLInfoParser parser;
        {for ( plStringList::iterator ii=lines.begin(); ii!=lines.end(); ++ii )
        {
            parser.ParseString( (*ii).c_str() );
            fileReports[ parser.fFilename ][ parser.fDescriptorName ].fServerVersion = parser.fVersion;
        }}

        // get client's SDL info
        plSDLMgr::GetInstance()->DeInit();
        plSDLMgr::GetInstance()->SetSDLDir( "SDL" );
        plSDLMgr::GetInstance()->Init();
        const plSDL::DescriptorList * cds = plSDLMgr::GetInstance()->GetDescriptors();
        {for ( plSDL::DescriptorList::const_iterator ii=cds->begin(); ii!=cds->end(); ++ii )
        {
            plStateDescriptor * descriptor = *ii;
            std::string filename = descriptor->GetFilename();
            int p = filename.find_last_of(PATH_SEPARATOR_STR);
            if( p!=std::string::npos )
                filename.erase(0,p+1);
            fileReports[ filename ][ descriptor->GetName() ].fClientVersion = descriptor->GetVersion();
        }}

        // write SDL comparison report
        file.WriteString("<h3 class=SectionHeader>SDL File Comparison</h3>\n" );
        file.WriteString("Version=0 means descriptor doesn't exist.<br><br>\n" );
        file.WriteString( "<table><tr class=Title><td>File</td><td>Server Version</td><td>Client Version</td><td>Status</td></tr>\n" );


        { for ( FileReports::iterator ii=fileReports.begin(); ii!=fileReports.end(); ++ii )
        {
            std::string sdlFilename = ii->first;
            DescriptorReports & descrReports = ii->second;
            file.WriteFmt( "<tr><td colspan=5 class=SDLFile>%s</td></tr>\n", sdlFilename.c_str() );
            { for ( DescriptorReports::iterator jj=descrReports.begin(); jj!=descrReports.end(); ++jj )
            {
#define kSDLBad "<font color=red><b>Bad</b></font>"
#define kSDLOk  "<font color=green><b>Ok</b></font>"
                std::string descrName = jj->first;
                DescriptorReport & descrReport = jj->second;
                file.WriteFmt( "<tr><td>&nbsp;&nbsp;&nbsp;%s</td><td align=right>%d</td><td align=right>%d</td><td align=center>%s</td></tr>\n",
                    descrName.c_str(), descrReport.fServerVersion, descrReport.fClientVersion,
                    ( descrReport.fServerVersion==descrReport.fClientVersion ) ? kSDLOk:kSDLBad );
            }}
        }}

        file.WriteString("</table>\n");*/
    }
    catch (...)
    {
        file.WriteString("<p>An error occurred while querying the server.\n");
    }

    file.WriteString("</body></html>\n");
    file.Close();

    ShellExecute( nil, nil, kServerInfoFilename, nil, nil, SW_SHOWNORMAL );
}
#endif
/////////////////////////////////////////////////////////////////////////////