// ini file read and write sample. support wchar_t.
// write C:\Users\(USERNAME)\AppData\Roaming\dev_ini_file_rw\dev_ini_file_rw.ini
//
// Windows10 x64 22H2 + MinGW (gcc 6.3.0)
// Last updated: <2024/01/19 00:19:02 +0900>

// use SHGetSpecialFolderPath()
#define _WIN32_IE 0x0400

#include <shlobj.h>
#include <shlwapi.h>
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
#include <tchar.h>

// target directory
#define INIDIR _T("dev_ini_file_rw")

// target ini file name
#define INIFILENAME _T("dev_ini_file_rw.ini")

// section name
#define SECNAME _T("ssstarsgl_config")

// global work
int wait = 15;
int speed = 1000;
int number = 500;
int fps_display = 0;

// write or create ini file
void writeIni(TCHAR *filepath)
{
  TCHAR buf[1024];

  wsprintf(buf, _T("%d"), wait);
  WritePrivateProfileString(SECNAME, _T("wait"), buf, filepath);

  wsprintf(buf, _T("%d"), speed);
  WritePrivateProfileString(SECNAME, _T("speed"), buf, filepath);

  wsprintf(buf, _T("%d"), number);
  WritePrivateProfileString(SECNAME, _T("number"), buf, filepath);

  wsprintf(buf, _T("%d"), fps_display);
  WritePrivateProfileString(SECNAME, _T("fps_display"), buf, filepath);
}

// read ini file
void readIni(TCHAR *filepath)
{
  wait = GetPrivateProfileInt(SECNAME, _T("wait"), -1, filepath);
  speed = GetPrivateProfileInt(SECNAME, _T("speed"), -1, filepath);
  number = GetPrivateProfileInt(SECNAME, _T("number"), -1, filepath);
  fps_display = GetPrivateProfileInt(SECNAME, _T("fps_display"), -1, filepath);
}

int main(void)
{
  TCHAR filepath[MAX_PATH];        // target ini file path
  TCHAR waFolderPath[MAX_PATH];    // APPDATA folder path
  TCHAR waTgtFolderPath[MAX_PATH]; // target folder path

  // get APPDATA folder path
  // request shlobj.h
  SHGetSpecialFolderPath(NULL, waFolderPath, CSIDL_APPDATA, FALSE);
  // wprintf(L"APPDATA folder path: [%S]\n", waFolderPath);

  if (PathCombine(waTgtFolderPath, waFolderPath, INIDIR) == NULL)
  {
    printf("ERROR: Can not make target folder path.\n");
    return -1;
  }
  // wprintf(L"Target folder path: [%S]\n", waTgtFolderPath);

  {
    BOOL create_dir = FALSE;

    if (!PathFileExists(waTgtFolderPath))
    {
      printf("Not found target folder. create.\n");
      create_dir = TRUE;
    }
    else if (!PathIsDirectory(waTgtFolderPath))
    {
      printf("Found target folder path. but, not directory. create.\n");
      create_dir = TRUE;
    }

    if (create_dir)
    {
      if (!CreateDirectory(waTgtFolderPath, NULL))
      {
        printf("ERROR: Can not create target folder.\n");
        return -1;
      }
    }
  }

  if (PathCombine(filepath, waTgtFolderPath, INIFILENAME) == NULL)
  {
    printf("ERROR: Can not make ini file path.\n");
    return -1;
  }

  // %s ... ANSI
  // %S ... UNICODE
  wprintf(L"ini file path : [%S]\n", filepath);

  if (!PathFileExists(filepath))
  {
    // Not found ini file
    printf("Not found ini file. Create.\n");
    writeIni(filepath);
  }

  if (!PathFileExists(filepath))
  {
    printf("Not found ini file.\n");
    return -1;
  }

  // read ini file
  printf("Found ini file. Read.\n");
  readIni(filepath);

  // dump results
  printf("wait=%d\n", wait);
  printf("speed=%d\n", speed);
  printf("number=%d\n", number);
  printf("fps_display=%d\n", fps_display);

  return 0;
}