// copy_file.cxx

#include "dataset_util/copy_file.h"
#include "dataset_util/FileStatus.h"
#include "dataset_util/Text.h"
#include <iostream>
#include <cassert>

using std::string;
using std::cout;
using std::endl;

void msg(string msg) {
  cout << "----- ";
  cout << msg;
  cout << " -----" << endl;
}

bool check(int val, int expect=0) {
  cout << "Value is " << val << endl;
  return val == expect;
}

int copy_file_t() {

  msg("Clean up");
  system("rm -f newfile");
  assert( ! FileStatus("newfile").exists() );

  msg("Nonexistent input");
  assert( ! check(copy_file("oldfile1", "newfile")) );
  assert( ! FileStatus("newfile").exists() );

  msg("Create file 1");
  system("echo myfile1 > oldfile1");
  assert( FileStatus("oldfile1").exists() );
  Text text1("oldfile1");

  msg("Create file 2");
  system("echo myfile_two > oldfile2");
  assert( FileStatus("oldfile2").exists() );
  Text text2("oldfile2");

  msg("Successful copy without overwrite");
  assert( check(copy_file("oldfile1", "newfile")) );
  assert( FileStatus("newfile").exists() );
  assert( Text("newfile") == text1 );
  assert( Text("newfile") != text2 );

  msg("Fail overwrite");
  assert( ! check(copy_file("oldfile2", "newfile")) );
  assert( FileStatus("newfile").exists() );
  assert( Text("newfile") == text1 );
  assert( Text("newfile") != text2 );

  msg("Successful copy with overwrite");
  assert( check(copy_file("oldfile2", "newfile", true)) );
  assert( FileStatus("newfile").exists() );
  assert( Text("newfile") != text1 );
  assert( Text("newfile") == text2 );

  msg("All tests passed.");
  return 0;
}

#ifdef CTEST_MAIN
int main() {
  return copy_file_t();
}
#endif