/*==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 "HeadSpin.h"

#include "MaxMain/MaxAPI.h"

#include "resource.h"

#include "plResponderWait.h"
#include "plResponderComponentPriv.h"
#include "plModifier/plResponderModifier.h"

#include "plResponderLink.h"

class plResponderWaitProc : public ParamMap2UserDlgProc
{
protected:
    IParamBlock2 *fStatePB;
    IParamBlock2 *fWaitPB;

    int fCurCmd;
    HWND fhDlg;
    HWND fhList;

public:
    void Init(IParamBlock2 *curStatePB, int curCmd, HWND hList) { fStatePB = curStatePB; fCurCmd = curCmd; fhList = hList; }

    INT_PTR DlgProc(TimeValue t, IParamMap2 *pm, HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam) override;
    void DeleteThis() override { }

protected:
    void LoadWho(bool setDefault=false);
    void LoadPoint(bool force=false);

    IParamBlock2 *GetCmdParams(int cmdIdx);
};
static plResponderWaitProc gResponderWaitProc;

enum
{
    kWaitWhoOld,
    kWaitPointOld,
    kWaitMe,
    kWaitWho,
    kWaitPoint,
};

ParamBlockDesc2 gResponderWaitBlock
(
    kResponderWaitBlk, _T("waitCmd"), 0, nullptr, P_AUTO_UI,

    IDD_COMP_RESPOND_WAIT, IDS_COMP_WAIT, 0, 0, &gResponderWaitProc,

    kWaitWhoOld,    _T("whoOld"),       TYPE_INT_TAB, 0,        0, 0,
        p_end,

    kWaitPointOld,  _T("pointOld"), TYPE_STRING_TAB, 0,     0, 0,
        p_end,

    kWaitMe,    _T("me"),       TYPE_BOOL,              0, 0,
        p_ui,   TYPE_SINGLECHEKBOX, IDC_WAIT_ON_ME_CHECK,
        p_end,

    kWaitWho, _T("who"),        TYPE_INT,               0, 0,
        p_default,  -1,
        p_end,

    kWaitPoint, _T("point"),    TYPE_STRING,            0, 0,
        p_end,

    p_end
);
void ResponderWait::SetDesc(ClassDesc2 *desc) { gResponderWaitBlock.SetClassDesc(desc); }

void ResponderWait::FixupWaitBlock(IParamBlock2 *waitPB)
{
    if (waitPB->Count(kWaitWhoOld) > 0)
    {
        int who = waitPB->GetInt(kWaitWhoOld, 0, 0);
        waitPB->SetValue(kWaitWho, 0, who);
        waitPB->Delete(kWaitWhoOld, 0, 1);
    }

    if (waitPB->Count(kWaitPointOld) > 0)
    {
        auto point = waitPB->GetStr(kWaitPointOld, 0, 0);
        waitPB->SetValue(kWaitPoint, 0, point);
        waitPB->Delete(kWaitPointOld, 0, 1);
    }
}

IParamBlock2 *ResponderWait::CreatePB()
{
    return CreateParameterBlock2(&gResponderWaitBlock, nullptr);
}

bool ResponderWait::GetWaitOnMe(IParamBlock2* waitPB)
{
    return (waitPB->GetInt(kWaitMe) != 0);
}

int ResponderWait::GetWaitingOn(IParamBlock2* waitPB)
{
    return waitPB->GetInt(kWaitWho);
}

ST::string ResponderWait::GetWaitPoint(IParamBlock2* waitPB)
{
    auto point = waitPB->GetStr(kWaitPoint);
    if (point && *point == '\0')
        return ST::string();
    return M2ST(point);
}

/////////////////////////////////////////////////////////////////////////////

void ResponderWait::InitDlg(IParamBlock2 *curStatePB, int curCmd, HWND hList)
{
    gResponderWaitProc.Init(curStatePB, curCmd, hList);
}

IParamBlock2 *plResponderWaitProc::GetCmdParams(int cmdIdx)
{
    return (IParamBlock2*)fStatePB->GetReferenceTarget(kStateCmdParams, 0, cmdIdx);
}

INT_PTR plResponderWaitProc::DlgProc(TimeValue t, IParamMap2 *pm, HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
        case WM_INITDIALOG:
        {
            fhDlg = hDlg;

            fWaitPB = pm->GetParamBlock();

            ResponderWait::FixupWaitBlock(fWaitPB);

            IParamBlock2 *pb = GetCmdParams(fCurCmd);
            plResponderCmd *cmd = plResponderCmd::Find(pb);
            pm->Enable(kWaitMe, cmd->IsWaitable(pb));

            LoadWho();
            LoadPoint();
            return TRUE;
        }

        case WM_CUSTEDIT_ENTER:
            if (wParam == IDC_MARKER_EDIT)
            {
                ICustEdit *edit = GetICustEdit((HWND)lParam);
                MCHAR buf[256];
                edit->GetText(buf, std::size(buf));
                fWaitPB->SetValue(kWaitPoint, 0, buf);

                return TRUE;
            }
            break;

        case WM_COMMAND:
        {
            int code = HIWORD(wParam);
            int id = LOWORD(wParam);

            if (id == IDC_CHECK_WAIT && code == BN_CLICKED)
            {
                BOOL checked = (IsDlgButtonChecked(hDlg, IDC_CHECK_WAIT) == BST_CHECKED);
                if (!checked)
                {
                    fWaitPB->SetValue(kWaitWho, 0, -1);
                    fWaitPB->SetValue(kWaitPoint, 0, _M(""));

                    LoadPoint();

                    HWND hWho = GetDlgItem(hDlg, IDC_WAIT_WHO);
                    EnableWindow(hWho, FALSE);
                    ComboBox_ResetContent(hWho);
                }
                else
                {
                    LoadWho(true);
                    LoadPoint();
                }

                return TRUE;
            }
            else if (id == IDC_WAIT_WHO && code == CBN_SELCHANGE)
            {
                HWND hWho = (HWND)lParam;
                int who = ComboBox_GetCurSel(hWho);
                int idx = (int)ComboBox_GetItemData(hWho, who);
                fWaitPB->SetValue(kWaitWho, 0, idx);

                LoadPoint();
                return TRUE;
            }
            else if (id == IDC_RADIO_FINISH && code == BN_CLICKED)
            {
                fWaitPB->SetValue(kWaitPoint, 0, _M(""));
                LoadPoint();
                return TRUE;
            }
            else if (id == IDC_RADIO_POINT && code == BN_CLICKED)
            {
                LoadPoint(true);
                return TRUE;
            }
            else if (id == IDC_WAIT_POINT && code == CBN_SELCHANGE)
            {
                HWND hPoint = (HWND)lParam;
                if (ComboBox_GetCurSel(hPoint) != CB_ERR)
                {
                    TCHAR buf[256];
                    ComboBox_GetText(hPoint, buf, std::size(buf));
                    fWaitPB->SetValue(kWaitPoint, 0, buf);
                }
                return TRUE;
            }
            break;
        }
    }

    return FALSE;
}

void plResponderWaitProc::LoadWho(bool setDefault)
{
    HWND hWho = GetDlgItem(fhDlg, IDC_WAIT_WHO);
    int who = fWaitPB->GetInt(kWaitWho);

    ComboBox_ResetContent(hWho);

    int numFound = 0;

    // Copy all the commands before this one to the 'who' combo box
    for (int i = 0; i < fCurCmd; i++)
    {
        IParamBlock2 *pb = GetCmdParams(i);
        plResponderCmd *cmd = plResponderCmd::Find(pb);

        if (cmd->IsWaitable(pb))
        {
            int idx = ComboBox_AddString(hWho, cmd->GetInstanceName(pb));
            ComboBox_SetItemData(hWho, idx, i);

            // If the saved 'who' is valid, select it and check the wait checkbox
            if (who == i)
            {
                ComboBox_SetCurSel(hWho, idx);
                CheckDlgButton(fhDlg, IDC_CHECK_WAIT, BST_CHECKED);
                EnableWindow(hWho, TRUE);
            }

            numFound++;
        }
    }

    // Pick the last item in the who combo as the default
    if (setDefault && numFound > 0)
    {
        HWND hWho = GetDlgItem(fhDlg, IDC_WAIT_WHO);
        int idx = (int)ComboBox_GetItemData(hWho, numFound-1);
        fWaitPB->SetValue(kWaitWho, 0, idx);

        ComboBox_SetCurSel(hWho, numFound-1);
        CheckDlgButton(fhDlg, IDC_CHECK_WAIT, BST_CHECKED);
        EnableWindow(hWho, TRUE);
    }

    // Disable the wait checkbox if there are no waitable commands behind this one
    EnableWindow(GetDlgItem(fhDlg, IDC_CHECK_WAIT), (numFound > 0));
}

void plResponderWaitProc::LoadPoint(bool force)
{
    int who = fWaitPB->GetInt(kWaitWho);
    const MCHAR* point = fWaitPB->GetStr(kWaitPoint);
    if (point && *point == _M('\0'))
        point = nullptr;

    CheckRadioButton(fhDlg, IDC_RADIO_FINISH, IDC_RADIO_POINT, point || force ? IDC_RADIO_POINT : IDC_RADIO_FINISH);

    BOOL enableAll = (who != -1);
    EnableWindow(GetDlgItem(fhDlg, IDC_RADIO_FINISH), enableAll);
    EnableWindow(GetDlgItem(fhDlg, IDC_RADIO_POINT), enableAll);

    BOOL enablePoint = ((point != nullptr) || force) && enableAll;
    EnableWindow(GetDlgItem(fhDlg, IDC_WAIT_POINT), enablePoint);
    ComboBox_ResetContent(GetDlgItem(fhDlg, IDC_WAIT_POINT));

    if (enableAll)
    {
        IParamBlock2 *pb = (IParamBlock2*)fStatePB->GetReferenceTarget(kStateCmdParams, 0, who);
        plResponderCmd *cmd = plResponderCmd::Find(pb);

        // KLUDGE - stupid one-shot needs editable box
        if (cmd == &(plResponderCmdOneShot::Instance()))
        {
            ShowWindow(GetDlgItem(fhDlg, IDC_WAIT_POINT), SW_HIDE);

            HWND hEdit = GetDlgItem(fhDlg, IDC_MARKER_EDIT);
            ShowWindow(hEdit, SW_SHOW);
            ICustEdit *custEdit = GetICustEdit(hEdit);
            custEdit->SetText(point ? point : _M(""));
        }
        else
        {
            ShowWindow(GetDlgItem(fhDlg, IDC_WAIT_POINT), SW_SHOW);

            HWND hEdit = GetDlgItem(fhDlg, IDC_MARKER_EDIT);
            ShowWindow(hEdit, SW_HIDE);

            plResponderCmd::WaitPoints waitPoints;
            cmd->GetWaitPoints(pb, waitPoints);

            HWND hCombo = GetDlgItem(fhDlg, IDC_WAIT_POINT);
            ComboBox_ResetContent(hCombo);

            if (waitPoints.size() == 0)
            {
                EnableWindow(GetDlgItem(fhDlg, IDC_RADIO_POINT), FALSE);
                EnableWindow(GetDlgItem(fhDlg, IDC_WAIT_POINT), FALSE);
            }
            else
            {
                for (int i = 0; i < waitPoints.size(); i++)
                {
                    const ST::string& marker = waitPoints[i];
                    int idx = ComboBox_AddString(hCombo, ST2T(marker));
                    if (point && marker == point)
                        ComboBox_SetCurSel(hCombo, idx);
                }
            }
        }
    }
}

static IParamBlock2 *GetWaitBlk(IParamBlock2 *state, int idx)
{
    return (IParamBlock2*)state->GetReferenceTarget(kStateCmdWait, 0, idx);
}

void ResponderWait::CmdRemoved(IParamBlock2 *state, int delIdx)
{
    int numCmds = state->Count(kStateCmdParams);
    for (int i = delIdx; i < numCmds; i++)
    {
        IParamBlock2 *pb = GetWaitBlk(state, i);

        int who = pb->GetInt(kWaitWho);

        if (who == delIdx)
            pb->SetValue(kWaitWho, 0, -1);
        if (who > delIdx)
            pb->SetValue(kWaitWho, 0, who-1);
    }
}

// A command was moved from oldIdx to newIdx.  Fix all the wait commands.
void ResponderWait::CmdMoved(IParamBlock2 *state, int oldIdx, int newIdx)
{
    int numCmds = state->Count(kStateCmdParams);

    // Moved forward
    if (oldIdx < newIdx)
    {
        // Patch up the commands that were ahead of this one
        for (int i = oldIdx; i < numCmds; i++)
        {
            if (i == newIdx)
                continue;

            IParamBlock2 *pb = GetWaitBlk(state, i);

            int who = pb->GetInt(kWaitWho);

            // If the command was waiting on the moved one, and is now behind it, invalidate it
            if (who == oldIdx && i < newIdx)
                pb->SetValue(kWaitWho, 0, -1);
            //
            else if (who == oldIdx)
                pb->SetValue(kWaitWho, 0, newIdx);
            // If it was waiting on one ahead of it, correct the index
            else if (who > oldIdx && who <= newIdx)
                pb->SetValue(kWaitWho, 0, who-1);
        }
    }
    // Moved backward
    else
    {
        // If this command was waiting on any of the commands now ahead of it, invalidate it
        IParamBlock2 *movedPB = GetWaitBlk(state, newIdx);
        int who = movedPB->GetInt(kWaitWho);
        if (who >= newIdx)
            movedPB->SetValue(kWaitWho, 0, -1);

        for (int i = newIdx+1; i < numCmds; i++)
        {
            // Is this command waiting on any of the commands it is moving in back of?
            IParamBlock2 *pb = GetWaitBlk(state, i);
            int who = pb->GetInt(kWaitWho);
            if (who == oldIdx)
                pb->SetValue(kWaitWho, 0, newIdx);
            if (who >= newIdx && who < oldIdx)
                pb->SetValue(kWaitWho, 0, who+1);
        }
    }
}

// Determine if any of the wait commands will be invalidated by this move
bool ResponderWait::ValidateCmdMove(IParamBlock2 *state, int oldIdx, int newIdx)
{
    // Moving forward
    if (oldIdx < newIdx)
    {
        // Are any of the commands ahead of this one waiting on it?
        for (int i = oldIdx+1; i <= newIdx; i++)
        {
            IParamBlock2 *pb = GetWaitBlk(state, i);

            if (pb->GetInt(kWaitWho) == oldIdx)
            {
                int ret = plMaxMessageBox(
                    nullptr,
                    _T("You are moving this command ahead of another command that waits on it."
                       "\nAre you sure you want to do that?"),
                    _T("Warning"),
                    MB_YESNO | MB_ICONWARNING
                );
                return ret == IDYES;
            }
        }
    }
    // Moving backward
    else
    {
        // Is this command waiting on any of the commands it is moving in back of?
        IParamBlock2 *pb = GetWaitBlk(state, oldIdx);

        int who = pb->GetInt(kWaitWho);
        if (who >= newIdx && who < oldIdx)
        {
            int ret = plMaxMessageBox(
                nullptr,
                _T("You are moving this command behind another command that it is waiting on.\n"
                   "Are you sure you want to do that?"),
                _T("Warning"),
                MB_YESNO | MB_ICONWARNING
            );
            return ret == IDYES;
        }
    }

    return true;
}
