/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Insight Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#include "cmaketest.h"
#include "cmSystemTools.h"
#include "cmRegularExpression.h"
#include "cmake.h"
#include "cmListFileCache.h"
#include "cmMakefileGenerator.h"
#include "cmCacheManager.h"
#if defined(_WIN32) && !defined(__CYGWIN__) 
#include "windows.h"
#endif


// Create a class to clean up all the registered generators in case of return
struct CleanUp
{
  ~CleanUp()
    {
      cmMakefileGenerator::UnRegisterGenerators();
      cmCacheManager::DeleteInstance();

    }
  void UseIt() 
    {
    }
};


// this is a test driver program for cmake.
int main (int argc, char **argv)
{
  CleanUp cleanup;
  cleanup.UseIt();
  if (argc < 4)
    {
    std::cerr << "Usage: " << argv[0] << " test-src-dir test-bin-dir test-executable\n";
    return 1;
    }

  // does the directory exist ?
  if (!cmSystemTools::FileIsDirectory(argv[2]))
    {
    cmSystemTools::MakeDirectory(argv[2]);
    }

  const char* sourceDirectory = argv[1];
  const char* binaryDirectory = argv[2];
  const char* executableName = argv[3];
  const char* executableDirectory = "";

  if(argc > 4)
    {
    executableDirectory = argv[4];
    }

  const char* projectName = executableName;
  if(argc > 5)
    {
    projectName = argv[5];
    }

  // WARNING: the rest of the args is passed to cmake

  /**
   * Run an executable command and put the stdout in output.
   */
  std::string output;
  
  // change to the tests directory and run cmake
  // use the cmake object instead of calling cmake
  std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
  std::cout << "Changing into directory: " << binaryDirectory << "\n";
  cmSystemTools::ChangeDirectory(binaryDirectory);

  std::vector<std::string> args;
  std::string intdir = ".";
#ifdef  CMAKE_INTDIR
  intdir = CMAKE_INTDIR;
#endif

  // make sure the same generator is used
  // use this program as the cmake to be run, it should not
  // be run that way but the cmake object requires a vailid path
  std::string cmakeCommand = CMAKE_BINARY_DIR;
  cmakeCommand += "/Source";
  cmakeCommand += "/";
  cmakeCommand += intdir;
  cmakeCommand += "/cmake";
  cmakeCommand += cmSystemTools::GetExecutableExtension();

  std::cout << "*** " << cmakeCommand << "\n";
  args.push_back(cmakeCommand.c_str());
  args.push_back(sourceDirectory);
  std::string generator = "-G";
  generator += CMAKE_GENERATOR;
  args.push_back(generator);
  
  std::vector<std::string> progArgs;
  if(argc > 6)
    {
    if(strcmp(argv[6] , "CMAKE_ARGS") == 0)
      {
      for (int j = 7; j < argc ; j++) 
        {
        args.push_back(argv[j]);
        }
      }
    else
      {
      for(int j = 6; j < argc; j++)
        {
        progArgs.push_back(argv[j]);
        }
      }
    }
  
  std::cout << "Generating build files...\n";

  cmake cm;
  if (cm.Generate(args) != 0)
    {
    std::cerr << "Error: cmake execution failed\n";
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd.c_str());
    return 1;
    }
  std::cout << "Done Generating build files.\n";

  cmake cm2;
  std::cout << "Generating build files (again)...\n";
  if (cm2.Generate(args) != 0)
    {
    std::cerr << "Error: cmake execution failed\n";
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd.c_str());
    return 1;
    }
  std::cout << "Done Generating build files (again).\n";

  cmListFileCache::GetInstance()->ClearCache();

  // now build the test
  std::string makeCommand = MAKEPROGRAM;
  if(makeCommand.size() == 0)
    {
    std::cerr << "Error: cmaketest does not have a valid MAKEPROGRAM\n";
    }
  makeCommand = cmSystemTools::ConvertToOutputPath(makeCommand.c_str());
  std::string lowerCaseCommand = makeCommand;
  cmSystemTools::LowerCase(lowerCaseCommand);
  std::string dartMakeCommand = DART_MAKECOMMAND;
  // if msdev is the make program then do the following
  // MSDEV 6.0
  if(lowerCaseCommand.find("msdev") != std::string::npos)
    {
    // if there are spaces in the makeCommand, assume a full path
    // and convert it to a path with no spaces in it as the
    // RunCommand does not like spaces
#if defined(_WIN32) && !defined(__CYGWIN__)      
    if(makeCommand.find(' ') != std::string::npos)
      {
      cmSystemTools::GetShortPath(makeCommand.c_str(), makeCommand);
      }
#endif
    makeCommand += " ";
    makeCommand += projectName;
    makeCommand += ".dsw /MAKE \"ALL_BUILD - ";
    makeCommand += intdir + "\" /REBUILD";
    }
  // MSDEV 7.0 .NET
  else if (lowerCaseCommand.find("devenv") != std::string::npos)
    {
#if defined(_WIN32) && !defined(__CYGWIN__)      
    if(makeCommand.find(' ') != std::string::npos)
      {
      cmSystemTools::GetShortPath(makeCommand.c_str(), makeCommand);
      }
#endif
    makeCommand += " ";
    makeCommand += projectName;
    makeCommand += ".sln /rebuild ";
    makeCommand += intdir + " /project ALL_BUILD";
    }
  // command line make program
  else
    {
    // assume a make sytle program
    // clean first
    std::string cleanCommand = makeCommand;
    cleanCommand += " clean";
    std::cout << "Running make clean command: " << cleanCommand.c_str() << " ...\n";
    if (!cmSystemTools::RunCommand(cleanCommand.c_str(), output))
      {
      std::cerr << "Error: " << cleanCommand.c_str() << "  execution failed\n";
      std::cerr << output.c_str() << "\n";
      // return to the original directory
      cmSystemTools::ChangeDirectory(cwd.c_str());
      return 1;
      }
    
    // now build
    makeCommand += " all";
    }

  std::cout << "Running make command: " << makeCommand.c_str() << " ...\n";
  if (!cmSystemTools::RunCommand(makeCommand.c_str(), output))
    {
    std::cerr << "Error: " << makeCommand.c_str() <<  "  execution failed\n";
    std::cerr << output.c_str() << "\n";
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd.c_str());
    return 1;
    }

  // now run the compiled test if we can find it
  // See if the executable exists as written.
  std::string fullPath;
  if(cmSystemTools::FileExists(executableName))
    {
    fullPath = cmSystemTools::CollapseFullPath(executableName);
    }
  std::string tryPath = executableName;
  tryPath += cmSystemTools::GetExecutableExtension();
  if(cmSystemTools::FileExists(tryPath.c_str()))
    {
    fullPath = cmSystemTools::CollapseFullPath(tryPath.c_str());
    }
  // try the Debug extension
  tryPath = intdir + "/";
  tryPath += cmSystemTools::GetFilenameName(executableName);
  if(cmSystemTools::FileExists(tryPath.c_str()))
    {
    fullPath = cmSystemTools::CollapseFullPath(tryPath.c_str());
    }
  tryPath += cmSystemTools::GetExecutableExtension();
  if(cmSystemTools::FileExists(tryPath.c_str()))
    {
    fullPath = cmSystemTools::CollapseFullPath(tryPath.c_str());
    }
  tryPath = executableDirectory;
  tryPath += "/";
  tryPath += executableName;
  tryPath += cmSystemTools::GetExecutableExtension();
  if(cmSystemTools::FileExists(tryPath.c_str()))
    {
    fullPath = cmSystemTools::CollapseFullPath(tryPath.c_str());
    }
  tryPath = executableDirectory;
  tryPath += "/";
  tryPath += intdir + "/";
  tryPath += executableName;
  tryPath += cmSystemTools::GetExecutableExtension();
  if(cmSystemTools::FileExists(tryPath.c_str()))
    {
    fullPath = cmSystemTools::CollapseFullPath(tryPath.c_str());
    }
  if(!cmSystemTools::FileExists(fullPath.c_str()))
    {
    std::cerr << "Could not find path to executable, perhaps it was not built: " <<
      executableName << "\n";
    std::cerr << "Error: " << fullPath.c_str() << "  execution failed\n";
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd.c_str());
    return 1;
    }
  fullPath = cmSystemTools::ConvertToOutputPath(fullPath.c_str());
  for(std::vector<std::string>::iterator p = progArgs.begin();
      p != progArgs.end(); ++p)
    {
    fullPath += " ";
    fullPath += *p;
    }
  std::cout << "Running test executable: " << fullPath.c_str() << "\n";
  int ret = 0;
  if (!cmSystemTools::RunCommand(fullPath.c_str(), output, ret, 0, true))
    {
    std::cerr << "Error: " << fullPath.c_str() << "  execution failed\n";
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd.c_str());
    return 1;
    }  
  std::cout << output << "\n";
  // return to the original directory
  cmSystemTools::ChangeDirectory(cwd.c_str());
  if(ret)
    {
    cmSystemTools::Error("test executable ", fullPath.c_str(), 
                         "returned a non-zero value");
    }
  return ret;
}