/*============================================================================
  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;
    }

  if(this->GetOption("CPACK_BUNDLE_APPLE_CERT_APP"))
    {
    const std::string codesign_path = cmSystemTools::FindProgram("codesign",
       std::vector<std::string>(), false);

    if(codesign_path.empty())
      {
      cmCPackLogger(cmCPackLog::LOG_ERROR,
        "Cannot locate codesign command"
        << std::endl);
      return 0;
      }
    this->SetOptionIfNotSet("CPACK_COMMAND_CODESIGN", codesign_path.c_str());
    }

  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::ConstructBundle()
{

  // 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 ...
  std::ostringstream staging;
  staging << toplevel;

  std::ostringstream contents;
  contents << staging.str() << "/" << cpack_bundle_name
    << ".app/" << "Contents";

  std::ostringstream application;
  application << contents.str() << "/" << "MacOS";

  std::ostringstream resources;
  resources << contents.str() << "/" << "Resources";

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

  std::ostringstream 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 ...
  std::ostringstream icon_source;
  icon_source << cpack_bundle_icon;

  std::ostringstream 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())
    {
    std::ostringstream command_source;
    command_source << cpack_bundle_startup_command;

    std::ostringstream 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 1;
}

//----------------------------------------------------------------------
int cmCPackBundleGenerator::PackageFiles()
{
  if(!this->ConstructBundle())
    {
    return 0;
    }

  if(!this->SignBundle(toplevel))
    {
    return 0;
    }

  return this->CreateDMG(toplevel, packageFileNames[0]);
}

bool cmCPackBundleGenerator::SupportsComponentInstallation() const
{
  return false;
}


int cmCPackBundleGenerator::SignBundle(const std::string& src_dir)
{
  const std::string cpack_apple_cert_app =
    this->GetOption("CPACK_BUNDLE_APPLE_CERT_APP")
    ? this->GetOption("CPACK_BUNDLE_APPLE_CERT_APP") : "";

  // codesign the application.
  if(!cpack_apple_cert_app.empty())
    {
    std::string output;
    std::string bundle_path;
    bundle_path = src_dir + "/";
    bundle_path += this->GetOption("CPACK_BUNDLE_NAME");
    bundle_path += ".app";

    // A list of additional files to sign, ie. frameworks and plugins.
    const std::string sign_parameter =
      this->GetOption("CPACK_BUNDLE_APPLE_CODESIGN_PARAMETER")
      ? this->GetOption("CPACK_BUNDLE_APPLE_CODESIGN_PARAMETER")
      : "--deep -f";

    const std::string sign_files =
      this->GetOption("CPACK_BUNDLE_APPLE_CODESIGN_FILES")
      ? this->GetOption("CPACK_BUNDLE_APPLE_CODESIGN_FILES") : "";

    std::vector<std::string> relFiles;
    cmSystemTools::ExpandListArgument(sign_files, relFiles);

    // sign the files supplied by the user, ie. frameworks.
    for(std::vector<std::string>::iterator it = relFiles.begin();
      it != relFiles.end(); ++it)
      {
      std::ostringstream temp_sign_file_cmd;
      temp_sign_file_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
      temp_sign_file_cmd << " " << sign_parameter << " -s \""
                         << cpack_apple_cert_app;
      temp_sign_file_cmd << "\" -i ";
      temp_sign_file_cmd << this->GetOption("CPACK_APPLE_BUNDLE_ID");
      temp_sign_file_cmd << " \"";
      temp_sign_file_cmd << bundle_path;
      temp_sign_file_cmd << it->c_str() << "\"";

      if(!this->RunCommand(temp_sign_file_cmd, &output))
        {
        cmCPackLogger(cmCPackLog::LOG_ERROR,
          "Error signing file:"
          << bundle_path << it->c_str() << std::endl << output << std::endl);

        return 0;
        }
      }

    // sign main binary
    std::ostringstream temp_sign_binary_cmd;
    temp_sign_binary_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
    temp_sign_binary_cmd << " " << sign_parameter << " -s \""
                         << cpack_apple_cert_app;
    temp_sign_binary_cmd << "\" \"" << bundle_path << "\"";

    if(!this->RunCommand(temp_sign_binary_cmd, &output))
      {
      cmCPackLogger(cmCPackLog::LOG_ERROR,
        "Error signing the application binary."
        << std::endl << output << std::endl);

      return 0;
      }

    // sign app bundle
    std::ostringstream temp_codesign_cmd;
    temp_codesign_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
    temp_codesign_cmd << " " << sign_parameter << " -s \""
                      << cpack_apple_cert_app << "\"";
    if(this->GetOption("CPACK_BUNDLE_APPLE_ENTITLEMENTS"))
      {
      temp_codesign_cmd << " --entitlements ";
      temp_codesign_cmd << this->GetOption("CPACK_BUNDLE_APPLE_ENTITLEMENTS");
      }
    temp_codesign_cmd << " \"" << bundle_path << "\"";

    if(!this->RunCommand(temp_codesign_cmd, &output))
      {
      cmCPackLogger(cmCPackLog::LOG_ERROR,
        "Error signing the application package."
        << std::endl << output << std::endl);

      return 0;
      }

    cmCPackLogger(cmCPackLog::LOG_OUTPUT,
      "- Application has been codesigned"
      << std::endl);
    cmCPackLogger(cmCPackLog::LOG_VERBOSE,
       (this->GetOption("CPACK_BUNDLE_APPLE_ENTITLEMENTS")
         ? "with entitlement sandboxing" : "without entitlement sandboxing")
       << std::endl);
  }

  return 1;
}