/* -*- fill-column: 77; c-basic-offset: 4; compile-command: "make TARGET_OS=wince DEBUG=TRUE" -*- */
/* 
 * Copyright 2004-2008 by Eric House (xwords@eehouse.org).  All rights reserved.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <windowsx.h>
#include "stdafx.h" 
#include <commdlg.h>
#ifdef _win32_wce
#include <aygshell.h>
#endif

#include "cemain.h" 
#include "cesvdgms.h" 
#include "ceutil.h" 
#include "cedebug.h" 
#include "debhacks.h"

typedef struct CeSaveGameNameState {
    CeDlgHdr dlgHdr;
    wchar_t* buf; 
    XP_U16 buflen;
    XP_U16 lableTextId;
    XP_Bool cancelled;
    XP_Bool inited;
} CeSaveGameNameState;

static XP_Bool
ceFileExists( const wchar_t* name )
{
    wchar_t buf[128];
    DWORD attributes;
    swprintf( buf, DEFAULT_DIR_NAME L"\\%s.xwg", name );

    attributes = GetFileAttributes( buf );
    return attributes != 0xFFFFFFFF;
}

static void
makeUniqueName( wchar_t* buf, XP_U16 bufLen )
{
    XP_U16 ii;
    for ( ii = 1; ii < 100; ++ii ) {
        int len = swprintf( buf, L"Untitled%d", ii );
        XP_ASSERT( len < bufLen );
        if ( !ceFileExists( buf ) ) {
            break;
        }
    }
    /* If we fall out of the loop, the user will be asked to confirm delete
       of Untitled99 or somesuch.  That's ok.... */
} /* makeUniqueName */

static LRESULT CALLBACK
SaveNameDlg( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam )
{
    CeSaveGameNameState* state;
    XP_U16 wid;
    BOOL result = FALSE;

    if ( message == WM_INITDIALOG ) {
        SetWindowLong( hDlg, GWL_USERDATA, lParam );

        state = (CeSaveGameNameState*)lParam;
        state->cancelled = XP_TRUE;
        state->inited = XP_FALSE;

        wchar_t buf[128];
        LoadString( state->dlgHdr.globals->hInst, state->lableTextId, 
                    buf, VSIZE(buf) );
        (void)SetDlgItemText( hDlg, IDC_SVGN_SELLAB, buf );

        ceDlgSetup( &state->dlgHdr, hDlg, DLG_STATE_TRAPBACK );

        result = TRUE;
    } else {
        state = (CeSaveGameNameState*)GetWindowLong( hDlg, GWL_USERDATA );
        if ( !!state ) {
            if ( !state->inited ) {
                state->inited = XP_TRUE;
                (void)SetDlgItemText( hDlg, IDC_SVGN_EDIT, state->buf );
            }

            if ( ceDoDlgHandle( &state->dlgHdr, message, wParam, lParam) ) {
                result = TRUE;
            } else {

                switch (message) {
                case WM_COMMAND:
                    wid = LOWORD(wParam);
                    switch( wid ) {
                    case IDOK: {
                        wchar_t buf[128];
                        (void)GetDlgItemText( hDlg, IDC_SVGN_EDIT, buf, 
                                              VSIZE(buf) );
                        if ( ceFileExists( buf ) ) {
                            messageBoxChar( state->dlgHdr.globals, "File exists", 
                                            L"Oops!", MB_OK );
                            break;
                        }
                        swprintf( state->buf, DEFAULT_DIR_NAME L"\\%s.xwg", buf );
                        XP_LOGW( __func__, state->buf );
                        /* fallthru */
                        state->cancelled = XP_FALSE;
                    }
                    case IDCANCEL:
                        EndDialog(hDlg, wid);
                        result = TRUE;
                        break;
                    }
                }
            }
        }
    }
    return result;
} /* SaveNameDlg */

XP_Bool
ceConfirmUniqueName( CEAppGlobals* globals, XP_U16 strId, wchar_t* buf, XP_U16 buflen )
{
    CeSaveGameNameState state;

    LOG_FUNC();

    makeUniqueName( buf, buflen );

    XP_MEMSET( &state, 0, sizeof(state) );
    state.dlgHdr.globals = globals;
    state.buf = buf;
    state.buflen = buflen;
    state.lableTextId = strId;
    (void)DialogBoxParam( globals->hInst, (LPCTSTR)IDD_SAVENAMEDLG, 
                          globals->hWnd, 
                          (DLGPROC)SaveNameDlg, (long)&state );
    XP_LOGW( __func__, buf );
    return !state.cancelled;
} /* ceConfirmUniqueName */

typedef struct CeSavedGamesState {
    CeDlgHdr dlgHdr;
    wchar_t* buf; 
    XP_U16 buflen;
    XP_S16 sel;
    XP_U16 openGameIndex;
    wchar_t curName[128];
    XP_U16 nItems;

    XP_Bool opened;
    XP_Bool inited;
    XP_Bool relaunch;
} CeSavedGamesState;

/* Probably belongs as a utility */
static void
getCBText( HWND hDlg, XP_U16 id, XP_U16 sel, wchar_t* buf, XP_U16* lenp )
{
    XP_U16 len = SendDlgItemMessage( hDlg, id, GETLBTEXTLEN, sel, 0L );
    if ( len < *lenp ) {
        (void)SendDlgItemMessage( hDlg, id, GETLBTEXT, sel, (LPARAM)buf );
    } else {
        XP_ASSERT( 0 );
    }
    *lenp = len;
} /* getCBText */

static void
getFullSelPath( CeSavedGamesState* state, wchar_t* buf, XP_U16 buflen )
{
    XP_U16 len;
    lstrcpy( buf, DEFAULT_DIR_NAME L"\\" );
    len = lstrlen( buf );
    buflen -= len;
    getCBText( state->dlgHdr.hDlg, IDC_SVGM_GAMELIST, state->sel, &buf[len], &buflen );
    lstrcat( buf, L".xwg" );
}

static void
setButtons( CeSavedGamesState* state ) 
{
    XP_Bool curSelected = state->openGameIndex == state->sel;
    XP_Bool haveItem = state->nItems > 0;
    HWND hDlg = state->dlgHdr.hDlg;

    ceEnOrDisable( hDlg, IDC_SVGM_OPEN, haveItem && !curSelected );
    ceEnOrDisable( hDlg, IDC_SVGM_DUP, haveItem );
    ceEnOrDisable( hDlg, IDC_SVGM_DEL, haveItem && !curSelected );
    ceEnOrDisable( hDlg, IDC_SVGM_CHANGE, haveItem && !curSelected );
}

static void
initSavedGamesData( CeSavedGamesState* state )
{
    HANDLE fileH;
    WIN32_FIND_DATA data;
    wchar_t path[256];
    XP_S16 curSel = state->sel;
    XP_U16 ii;

    XP_MEMSET( &data, 0, sizeof(data) );
    lstrcpy( path, DEFAULT_DIR_NAME L"\\" );
    lstrcat( path, L"*.xwg" );

    fileH = FindFirstFile( path, &data );
    for ( ii = 0; fileH != INVALID_HANDLE_VALUE; ++ii ) {
        XP_U16 len = wcslen( data.cFileName );
        XP_Bool isCurGame;

        isCurGame = 0 == wcscmp( state->curName, data.cFileName );
        if ( isCurGame ) {
            state->openGameIndex = ii;
            if ( curSel == -1 ) {
                curSel = ii;
            }
        }

        XP_ASSERT( data.cFileName[len-4] == '.');
        data.cFileName[len-4] = 0;
        SendDlgItemMessage( state->dlgHdr.hDlg, IDC_SVGM_GAMELIST, ADDSTRING,
                            0, (LPARAM)data.cFileName );

        ++state->nItems;

        if ( !FindNextFile( fileH, &data ) ) {
            XP_ASSERT( GetLastError() == ERROR_NO_MORE_FILES );
            break;
        }
    }

    SendDlgItemMessage( state->dlgHdr.hDlg, IDC_SVGM_GAMELIST, SETCURSEL, curSel, 0 );
    state->sel = curSel;

    setButtons( state );

    LOG_RETURN_VOID();
} /* initSavedGamesData */

static XP_Bool
renameSelected( CeSavedGamesState* state )
{
    wchar_t path[MAX_PATH];
    XP_Bool confirmed = ceConfirmUniqueName( state->dlgHdr.globals, IDS_RENAME, 
                                             path, VSIZE(path) );
    if ( confirmed ) {
        wchar_t curPath[MAX_PATH];
        getFullSelPath( state, curPath, VSIZE(curPath) );
        confirmed = MoveFile( curPath, path );
    }
    return confirmed;
} /* renameSelected */

static XP_Bool
duplicateSelected( CeSavedGamesState* state )
{
    wchar_t newPath[MAX_PATH];
    XP_Bool confirmed;

    confirmed = ceConfirmUniqueName( state->dlgHdr.globals, IDS_DUPENAME, 
                                     newPath, VSIZE(newPath) );
    if ( confirmed ) {
        wchar_t curPath[MAX_PATH];
        getFullSelPath( state, curPath, VSIZE(curPath) );
        confirmed = CopyFile( curPath, newPath, TRUE ); /* TRUE is what??? */
    }
    return confirmed;
} /* duplicateSelected */

static XP_Bool
deleteSelected( CeSavedGamesState* state )
{
    wchar_t buf[128];
    wchar_t path[128];
    XP_U16 len = VSIZE(buf);

    /* confirm first!!!! */
    XP_Bool confirmed = queryBoxChar( state->dlgHdr.globals, 
                                      "Are you certain you want to delete the "
                                      "selected game?  This action cannot be "
                                      "undone.");
    if ( confirmed ) {
        getCBText( state->dlgHdr.hDlg, IDC_SVGM_GAMELIST, state->sel, buf, &len );
        swprintf( path, DEFAULT_DIR_NAME L"\\%s.xwg", buf );
        confirmed = DeleteFile( path );
        if ( confirmed ) {
            state->sel = -1;
        }
    }
    return confirmed;
} /* deleteSelected */

static LRESULT CALLBACK
SavedGamesDlg( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam )
{
    CeSavedGamesState* state;
    BOOL result = FALSE;

    if ( message == WM_INITDIALOG ) {
        SetWindowLong( hDlg, GWL_USERDATA, lParam );

        state = (CeSavedGamesState*)lParam;
        state->inited = XP_FALSE;

        ceDlgSetup( &state->dlgHdr, hDlg, DLG_STATE_NONE|DLG_STATE_DONEONLY );

        result = TRUE;
    } else {
        state = (CeSavedGamesState*)GetWindowLong( hDlg, GWL_USERDATA );
        if ( !!state ) {

            if ( !state->inited ) {
                state->inited = XP_TRUE;
                initSavedGamesData( state );
            }

            if ( ceDoDlgHandle( &state->dlgHdr, message, wParam, lParam) ) {
                result = TRUE;
            } else if ( message == WM_COMMAND ) {
                XP_U16 wid = LOWORD(wParam);
                if ( (IDC_SVGM_GAMELIST == wid)
                     && (CBN_SELCHANGE == HIWORD(wParam)) ) {
                    XP_S16 sel = SendDlgItemMessage( hDlg, IDC_SVGM_GAMELIST, 
                                                     GETCURSEL, 0, 0L);
                    if ( sel >= 0 ) {
                        state->sel = sel;
                        setButtons( state );
                    }
                    result = TRUE;
                } else if ( BN_CLICKED == HIWORD(wParam) ) {
                    switch( wid ) {
                    case IDC_SVGM_DUP:
                        state->relaunch = duplicateSelected( state );
                        break;
                    case IDC_SVGM_CHANGE:
                        state->relaunch = renameSelected( state );
                        break;
                    case IDC_SVGM_DEL:
                        state->relaunch = deleteSelected( state );
                        break;

                    case IDC_SVGM_OPEN: {
                        wchar_t buf[128];
                        XP_U16 len = VSIZE(buf);
                        getCBText( hDlg, IDC_SVGM_GAMELIST, state->sel, 
                                   buf, &len );
                        swprintf( state->buf, DEFAULT_DIR_NAME L"\\%s.xwg", buf );
                        XP_LOGW( "returning", state->buf );
                        state->opened = XP_TRUE;
                    }
                        /* fallthrough */
                    case IDOK:  /* Done button */
                        EndDialog(hDlg, wid);
                        result = TRUE;
                        break;
                    }
                    
                    if ( state->relaunch ) {
                        EndDialog( hDlg, wid );
                        result = TRUE;
                    }
                }
            }
        }
    }

    return result;
} /* SavedGamesDlg */

XP_Bool
ceSavedGamesDlg( CEAppGlobals* globals, const XP_UCHAR* curPath,
                 wchar_t* buf, XP_U16 buflen )
{
    CeSavedGamesState state;

    LOG_FUNC();

    XP_MEMSET( &state, 0, sizeof(state) ); /* sets cancelled */
    state.dlgHdr.globals = globals;
    state.buf = buf;
    state.buflen = buflen;
    state.sel = -1;

    if ( !!curPath ) {
        wchar_t shortName[128];
        XP_U16 len;
        XP_LOGF( curPath );

        len = (XP_U16)XP_STRLEN( curPath );
        MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, curPath, len + 1, 
                             shortName, len + 1 );
        len = wcslen( DEFAULT_DIR_NAME L"\\" );
        lstrcpy( state.curName, shortName+len );
        XP_LOGW( "shortName", state.curName );
    }

    for ( ; ; ) {
        (void)DialogBoxParam( globals->hInst, (LPCTSTR)IDD_SAVEDGAMESDLG, 
                              globals->hWnd, 
                              (DLGPROC)SavedGamesDlg, (long)&state );

        if ( !state.relaunch ) {
            break;
        }
        state.relaunch = XP_FALSE;
    }
    XP_LOGW( __func__, buf );

    return state.opened;
} /* ceSavedGamesDlg  */