#include "dtl_test_common.hpp"

string create_path(const string &test_name, string diff_name, enum type_diff t,
                   bool is_use_suffix) {
  string ret;
  switch (t) {
  case TYPE_DIFF_SES:
    ret = (getcwd(NULL, 0) + string("/") + string("ses") + string("/") +
           diff_name + string("/") + test_name);
    break;
  case TYPE_DIFF_UNI:
    ret = (getcwd(NULL, 0) + string("/") + string("hunks") + string("/") +
           diff_name + string("/") + test_name);
    break;
  }
  ret += is_use_suffix ? "_" : "";
  return ret;
}

size_t cal_diff_uni(const string &path_l, const string &path_r) {
  string buf;
  ifstream lifs(path_l.c_str());
  ifstream rifs(path_r.c_str());

  vector<string> llines;
  vector<string> rlines;

  while (getline(lifs, buf)) {
    llines.push_back(buf);
  }

  while (getline(rifs, buf)) {
    rlines.push_back(buf);
  }

  Diff<string, vector<string>> diff_uni(llines, rlines);
  diff_uni.compose();
  return diff_uni.getEditDistance();
}

bool is_file_exist(string &fs) {
  FILE *fp;
  if ((fp = fopen(fs.c_str(), "r")) == NULL) {
    return false;
  }
  fclose(fp);
  return true;
}

void diff_resultset_exist_check(string &fs) {
  if (!is_file_exist(fs)) {
    cerr << "======================================================Error!!!===="
            "=================================================="
         << endl;
    cerr << "diff result set:" << fs << " is not found." << endl;
    cerr << "======================================================Error!!!===="
            "=================================================="
         << endl;
    cerr << "excute dtl_test in dtl/test!" << endl;
    exit(EXIT_FAILURE);
  }
}