////////////////////////////////////////////////////////////////////////////////
// taskwarrior - a command line task list manager.
//
// Copyright 2010 - 2011, Johannes Schlatow.
// 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.,
//     51 Franklin Street, Fifth Floor,
//     Boston, MA
//     02110-1301
//     USA
//
////////////////////////////////////////////////////////////////////////////////

#include <iostream>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "Transport.h"
#include "TransportSSH.h"
#include "TransportRSYNC.h"
#include "TransportCurl.h"

////////////////////////////////////////////////////////////////////////////////
Transport::Transport (const Uri& uri)
{
  executable = "";
  this->uri = uri;
}

////////////////////////////////////////////////////////////////////////////////
Transport::~Transport ()
{
}

////////////////////////////////////////////////////////////////////////////////
Transport* Transport::getTransport(const Uri& uri)
{
  if (uri.protocol == "ssh")
  {
    return new TransportSSH(uri);
  }
  else if (uri.protocol == "rsync")
  {
    return new TransportRSYNC(uri);
  }
  else if ( (uri.protocol == "http")
         || (uri.protocol == "https")
         || (uri.protocol == "ftp") )
  {
    return new TransportCurl(uri);
  }

  return NULL;
}

////////////////////////////////////////////////////////////////////////////////
int Transport::execute()
{
  if (executable == "")
    return -1;

  pid_t child_pid = fork();

  if (child_pid == 0)
  {
    // this is done by the child process
    char shell[] = "bash";
    char opt[]   = "-c";

    std::string cmdline = executable;

    std::vector <std::string>::iterator it;
    for (it = arguments.begin(); it != arguments.end(); ++it)
    {
      std::string tmp = *it;
      cmdline += " " + tmp;
    }

    char** argv = new char*[4];
    argv[0] = shell;                  // sh
    argv[1] = opt;                    // -c
    argv[2] = (char*)cmdline.c_str();	// e.g. scp undo.data user@host:.task/
    argv[3] = NULL;                   // required by execv

    int ret = execvp(shell, argv);
    delete[] argv;

    exit(ret);
  }
  else
  {
    // this is done by the parent process
    int child_status;

    pid_t pid = waitpid(child_pid, &child_status, 0);

    if (pid == -1)
      return -1;
    else
      return child_status;
  }
}

////////////////////////////////////////////////////////////////////////////////
bool Transport::is_directory(const std::string& path)
{
  return path[path.length()-1] == '/';
}


////////////////////////////////////////////////////////////////////////////////
bool Transport::is_filelist(const std::string& path)
{
  return (path.find ("*") != std::string::npos)
      || (path.find ("?") != std::string::npos)
      || (path.find ("{") != std::string::npos);
}

////////////////////////////////////////////////////////////////////////////////