/*
Copyright (C) 1999-2006 Id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant 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.

GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/*
The following source code is licensed by Id Software and subject to the terms of 
its LIMITED USE SOFTWARE LICENSE AGREEMENT, a copy of which is included with 
GtkRadiant. If you did not receive a LIMITED USE SOFTWARE LICENSE AGREEMENT, 
please contact Id Software immediately at info@idsoftware.com.
*/

//
// Linux stuff
//
// Leonardo Zide (leo@lokigames.com)
//

#include "qe3.h"

#include "debugging/debugging.h"

#include "ifilesystem.h"
//#include "imap.h"

#include <map>

#include <gtk/gtktearoffmenuitem.h>

#include "stream/textfilestream.h"
#include "cmdlib.h"
#include "stream/stringstream.h"
#include "os/path.h"
#include "scenelib.h"

#include "gtkutil/messagebox.h"
#include "error.h"
#include "map.h"
#include "build.h"
#include "points.h"
#include "camwindow.h"
#include "mainframe.h"
#include "preferences.h"
#include "watchbsp.h"
#include "autosave.h"
#include "convert.h"

QEGlobals_t  g_qeglobals;


#if defined(WIN32)
#define PATH_MAX 260
#endif


void QE_InitVFS()
{
  // VFS initialization -----------------------
  // we will call GlobalFileSystem().initDirectory, giving the directories to look in (for files in pk3's and for standalone files)
  // we need to call in order, the mod ones first, then the base ones .. they will be searched in this order
  // *nix systems have a dual filesystem in ~/.q3a, which is searched first .. so we need to add that too

  const char* gamename = gamename_get();
  const char* basegame = basegame_get();
#if defined(POSIX)
  const char* userRoot = g_qeglobals.m_userEnginePath.c_str();
#endif
  const char* globalRoot = EnginePath_get();

  // if we have a mod dir
  if(!string_equal(gamename, basegame))
  {
#if defined(POSIX)
    // ~/.<gameprefix>/<fs_game>
    {
      StringOutputStream userGamePath(256);
      userGamePath << userRoot << gamename << '/';
      GlobalFileSystem().initDirectory(userGamePath.c_str());
    }
#endif

    // <fs_basepath>/<fs_game>
    {
      StringOutputStream globalGamePath(256);
      globalGamePath << globalRoot << gamename << '/';
      GlobalFileSystem().initDirectory(globalGamePath.c_str());
    }
  }

#if defined(POSIX)
  // ~/.<gameprefix>/<fs_main>
  {
    StringOutputStream userBasePath(256);
    userBasePath << userRoot << basegame << '/';
    GlobalFileSystem().initDirectory(userBasePath.c_str());
  }
#endif

  // <fs_basepath>/<fs_main>
  {
    StringOutputStream globalBasePath(256);
    globalBasePath << globalRoot << basegame << '/';
    GlobalFileSystem().initDirectory(globalBasePath.c_str());
  }
}

int g_numbrushes = 0;
int g_numentities = 0;

void QE_UpdateStatusBar()
{
  char buffer[128];
  sprintf(buffer, "Brushes: %d Entities: %d", g_numbrushes, g_numentities);
  g_pParentWnd->SetStatusText(g_pParentWnd->m_brushcount_status, buffer);
}

SimpleCounter g_brushCount;

void QE_brushCountChanged()
{
  g_numbrushes = int(g_brushCount.get());
  QE_UpdateStatusBar();
}

SimpleCounter g_entityCount;

void QE_entityCountChanged()
{
  g_numentities = int(g_entityCount.get());
  QE_UpdateStatusBar();
}

bool ConfirmModified(const char* title)
{
  if (!Map_Modified(g_map))
    return true;

  EMessageBoxReturn result = gtk_MessageBox(GTK_WIDGET(MainFrame_getWindow()), "The current map has changed since it was last saved.\nDo you want to save the current map before continuing?", title, eMB_YESNOCANCEL, eMB_ICONQUESTION);
  if(result == eIDCANCEL)
  {
    return false;
  }
  if(result == eIDYES)
  {
    if(Map_Unnamed(g_map))
    {
      return Map_SaveAs();
    }
    else
    {
      return Map_Save();
    }
  }
  return true;
}


const char* const EXECUTABLE_TYPE = 
#if defined(__linux__) || defined (__FreeBSD__)
"x86"
#elif defined(__APPLE__)
"ppc"
#elif defined(WIN32)
"exe"
#else
#error "unknown platform"
#endif
;

void bsp_init()
{
  build_set_variable("RadiantPath", AppPath_get());
  build_set_variable("ExecutableType", EXECUTABLE_TYPE);
  build_set_variable("EnginePath", EnginePath_get());
  build_set_variable("MonitorAddress", (g_WatchBSP_Enabled) ? "127.0.0.1:39000" : "");
  build_set_variable("GameName", gamename_get());

  build_set_variable("MapFile", Map_Name(g_map));
}

void bsp_shutdown()
{
  build_clear_variables();
}

class ArrayCommandListener : public CommandListener
{
  GPtrArray* m_array;
public:
  ArrayCommandListener()
  {
    m_array = g_ptr_array_new();
  }
  ~ArrayCommandListener()
  {
    g_ptr_array_free(m_array, TRUE);
  }

  void execute(const char* command)
  {
    g_ptr_array_add(m_array, g_strdup(command));
  }

  GPtrArray* array() const
  {
    return m_array;
  }
};

class BatchCommandListener : public CommandListener
{
  TextOutputStream& m_file;
  std::size_t m_commandCount;
  const char* m_outputRedirect;
public:
  BatchCommandListener(TextOutputStream& file, const char* outputRedirect) : m_file(file), m_commandCount(0), m_outputRedirect(outputRedirect)
  {
  }

  void execute(const char* command)
  {
    m_file << command;
    if (m_commandCount == 0)
    {
      m_file << " > ";
    }
    else
    {
      m_file << " >> ";
    }
    m_file << "\"" << m_outputRedirect << "\"";
    m_file << "\n";
    ++m_commandCount;
  }
};

bool Region_cameraValid()
{
  Vector3 vOrig(vector3_snapped(Camera_getOrigin(*g_pParentWnd->GetCamWnd())));

  for (int i=0 ; i<3 ; i++)
  {
    if (vOrig[i] > region_maxs[i] || vOrig[i] < region_mins[i])
    {
      return false;
    }
  }
  return true;
}


void RunBSP(const char* name)
{
  // http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=503
  // make sure we don't attempt to region compile a map with the camera outside the region
  if (region_active && !Region_cameraValid())
  {
    globalErrorStream() << "The camera must be in the region to start a region compile.\n";
    return;
  }

  SaveMap();

  if(Map_Unnamed(g_map))
  {
    globalOutputStream() << "build cancelled\n";
    return;
  }

  if (g_SnapShots_Enabled && !Map_Unnamed(g_map) && Map_Modified(g_map))
  {
    Map_Snapshot();
  }

  if (region_active)
  {
    const char* mapname = Map_Name(g_map);
    StringOutputStream name(256);
    name << StringRange(mapname, path_get_filename_base_end(mapname)) << ".reg";
    Map_SaveRegion(name.c_str());
  }

  Pointfile_Delete();

  bsp_init();

  if (g_WatchBSP_Enabled)
  {
    ArrayCommandListener listener;
    build_run(name, listener);
    // grab the file name for engine running
    const char* fullname = Map_Name(g_map);
    StringOutputStream bspname(64);
    bspname << StringRange(path_get_filename_start(fullname), path_get_filename_base_end(fullname));
    BuildMonitor_Run( listener.array(), bspname.c_str() );
  }
  else
  {
    char junkpath[PATH_MAX];
    strcpy(junkpath, SettingsPath_get());
    strcat(junkpath, "junk.txt");

    char batpath[PATH_MAX];
#if defined(POSIX)
    strcpy(batpath, SettingsPath_get());
    strcat(batpath, "qe3bsp.sh");
#elif defined(WIN32)
    strcpy(batpath, SettingsPath_get());
    strcat(batpath, "qe3bsp.bat");
#else
#error "unsupported platform"
#endif
    bool written = false;
    {
      TextFileOutputStream batchFile(batpath);
      if(!batchFile.failed())
      {
#if defined (POSIX)
        batchFile << "#!/bin/sh \n\n";
#endif
        BatchCommandListener listener(batchFile, junkpath);
        build_run(name, listener);
        written = true;
      }
    }
    if(written)
    {
#if defined (POSIX)
      chmod (batpath, 0744);
#endif
      globalOutputStream() << "Writing the compile script to '" << batpath << "'\n";
      globalOutputStream() << "The build output will be saved in '" << junkpath << "'\n";
      Q_Exec(batpath, NULL, NULL, true);
    }
  }

  bsp_shutdown();
}

// =============================================================================
// Sys_ functions

void Sys_SetTitle(const char *text, bool modified)
{
  StringOutputStream title;
  title << ConvertLocaleToUTF8(text);

  if(modified)
  {
    title << " *";
  }

  gtk_window_set_title(MainFrame_getWindow(), title.c_str());
}

bool g_bWaitCursor = false;

void Sys_BeginWait (void)
{
  ScreenUpdates_Disable("Processing...", "Please Wait");
  GdkCursor *cursor = gdk_cursor_new (GDK_WATCH);
  gdk_window_set_cursor(GTK_WIDGET(MainFrame_getWindow())->window, cursor);
  gdk_cursor_unref (cursor);
  g_bWaitCursor = true;
}

void Sys_EndWait (void)
{
  ScreenUpdates_Enable();
  gdk_window_set_cursor(GTK_WIDGET(MainFrame_getWindow())->window, 0);
  g_bWaitCursor = false;
}

void Sys_Beep (void)
{
  gdk_beep();
}