#include <iostream>
#include <cpp-subprocess/subprocess.hpp>

using namespace subprocess;

void test_exename()
{
#ifdef __USING_WINDOWS__
  auto ret = call({"--version"}, executable{"cmake"}, shell{false});
#else
  auto ret = call({"-l"}, executable{"ls"}, shell{false});
#endif
  std::cout << ret << std::endl;
}

void test_input()
{
  auto p = Popen({"grep", "f"}, output{PIPE}, input{PIPE});
  const char* msg = "one\ntwo\nthree\nfour\nfive\n";
  p.send(msg, strlen(msg));
  auto res = p.communicate(nullptr, 0);
  std::cout << res.first.buf.data() << std::endl;
}

void test_piping()
{
  auto cat = Popen({"cat", "../subprocess.hpp"}, output{PIPE});
  auto grep = Popen({"grep", "template"}, input{cat.output()}, output{PIPE});
  auto cut = Popen({"cut", "-d,", "-f", "1"}, input{grep.output()}, output{PIPE});
  auto res = cut.communicate().first;
  std::cout << res.buf.data() << std::endl;
}

void test_easy_piping()
{
  auto res = pipeline("cat ../subprocess.hpp", "grep Args", "grep template");
  std::cout << res.buf.data() << std::endl;
}

void test_shell()
{
#ifdef __USING_WINDOWS__
  auto obuf = check_output({"cmake", "--version"}, shell{false});
#else
  auto obuf = check_output({"ls", "-l"}, shell{false});  
#endif
  std::cout << obuf.buf.data() << std::endl;
}

void test_sleep()
{
  auto p = Popen({"sleep", "30"}, shell{true});

  while (p.poll() == -1)
  {
    std::cout << "Waiting..." << std::endl;
#ifdef __USING_WINDOWS__
#else
    sleep(1);
#endif
  }

  std::cout << "Sleep ended: ret code = " << p.retcode() << std::endl;
}

void test_read_all()
{
  Popen p = Popen({"echo", "12345678"}, output{PIPE});

  std::vector<char> buf(6);
  int rbytes = util::read_all(p.output(), buf);

  std::string out(buf.begin(), buf.end());

  assert(out == "12345678\n" && rbytes == 9); // echo puts a new line at the end of output
  std::cout << "read_all() succeeded" << std::endl;
}

void test_simple_cmd()
{
  auto p = Popen({"ls", "-l"}, output{PIPE});
  auto obuf = p.communicate().first;
  std::cout << "Data : " << obuf.buf.data() << std::endl;
  std::cout << "Data len: " << obuf.length << std::endl;
}

int main() {
  /*
  test_exename();
  test_input();
  test_piping();
  test_easy_piping();
  test_shell();
  test_sleep();
  test_read_all();
  */
  test_simple_cmd();
  return 0;
}