/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/

#include "cmCPackBundleGenerator.h"
#include "cmCPackLog.h"
#include "cmSystemTools.h"

#include <cmsys/RegularExpression.hxx>

//----------------------------------------------------------------------
cmCPackBundleGenerator::cmCPackBundleGenerator()
{
}

//----------------------------------------------------------------------
cmCPackBundleGenerator::~cmCPackBundleGenerator()
{
}

//----------------------------------------------------------------------
int cmCPackBundleGenerator::InitializeInternal()
{
  const char* name = this->GetOption("CPACK_BUNDLE_NAME");
  if(0 == name)
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
      "CPACK_BUNDLE_NAME must be set to use the Bundle generator."
      << std::endl);

    return 0;
    }

  return this->Superclass::InitializeInternal();
}

//----------------------------------------------------------------------
const char* cmCPackBundleGenerator::GetPackagingInstallPrefix()
{
  this->InstallPrefix = "/";
  this->InstallPrefix += this->GetOption("CPACK_BUNDLE_NAME");
  this->InstallPrefix += ".app/Contents/Resources";

  return this->InstallPrefix.c_str();
}

//----------------------------------------------------------------------
int cmCPackBundleGenerator::PackageFiles()
{

  // Get required arguments ...
  const std::string cpack_bundle_name = this->GetOption("CPACK_BUNDLE_NAME")
    ? this->GetOption("CPACK_BUNDLE_NAME") : "";
  if(cpack_bundle_name.empty())
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
      "CPACK_BUNDLE_NAME must be set."
      << std::endl);

    return 0;
    }

  const std::string cpack_bundle_plist = this->GetOption("CPACK_BUNDLE_PLIST")
    ? this->GetOption("CPACK_BUNDLE_PLIST") : "";
  if(cpack_bundle_plist.empty())
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
      "CPACK_BUNDLE_PLIST must be set."
      << std::endl);

    return 0;
    }

  const std::string cpack_bundle_icon = this->GetOption("CPACK_BUNDLE_ICON")
    ? this->GetOption("CPACK_BUNDLE_ICON") : "";
  if(cpack_bundle_icon.empty())
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
      "CPACK_BUNDLE_ICON must be set."
      << std::endl);

    return 0;
    }

  // Get optional arguments ...
  const std::string cpack_bundle_startup_command = 
    this->GetOption("CPACK_BUNDLE_STARTUP_COMMAND") 
    ? this->GetOption("CPACK_BUNDLE_STARTUP_COMMAND") : "";

  // The staging directory contains everything that will end-up inside the
  // final disk image ...
  cmOStringStream staging;
  staging << toplevel;

  cmOStringStream contents;
  contents << staging.str() << "/" << cpack_bundle_name
    << ".app/" << "Contents";

  cmOStringStream application;
  application << contents.str() << "/" << "MacOS";

  cmOStringStream resources;
  resources << contents.str() << "/" << "Resources";

  // Install a required, user-provided bundle metadata file ...
  cmOStringStream plist_source;
  plist_source << cpack_bundle_plist;

  cmOStringStream plist_target;
  plist_target << contents.str() << "/" << "Info.plist";

  if(!this->CopyFile(plist_source, plist_target))
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
      "Error copying plist.  Check the value of CPACK_BUNDLE_PLIST."
      << std::endl);

    return 0;
    }

  // Install a user-provided bundle icon ...
  cmOStringStream icon_source;
  icon_source << cpack_bundle_icon;

  cmOStringStream icon_target;
  icon_target << resources.str() << "/" << cpack_bundle_name << ".icns";

  if(!this->CopyFile(icon_source, icon_target))
    {
    cmCPackLogger(cmCPackLog::LOG_ERROR,
      "Error copying bundle icon.  Check the value of CPACK_BUNDLE_ICON."
      << std::endl);

    return 0;
    }

  // Optionally a user-provided startup command (could be an
  // executable or a script) ...
  if(!cpack_bundle_startup_command.empty())
    {
    cmOStringStream command_source;
    command_source << cpack_bundle_startup_command;

    cmOStringStream command_target;
    command_target << application.str() << "/" << cpack_bundle_name;

    if(!this->CopyFile(command_source, command_target))
      {
      cmCPackLogger(cmCPackLog::LOG_ERROR,
                    "Error copying startup command. "
                    " Check the value of CPACK_BUNDLE_STARTUP_COMMAND."
        << std::endl);

      return 0;
      }

    cmSystemTools::SetPermissions(command_target.str().c_str(), 0777);
    }

  return this->CreateDMG();
}
