using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace KssSmaPlaLib.Ini
{
    public static class IniHelper
    {
        private const string INI_PATH = @".\Settings.ini";

        // Win32 API宣言
        [DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
        private static extern int GetPrivateProfileString(
            string lpAppName,
            string lpKeyName,
            string lpDefault,
            StringBuilder lpReturnedString,
            int nSize,
            string lpFileName);

        [DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
        private static extern bool WritePrivateProfileString(
            string lpAppName,
            string lpKeyName,
            string lpString,
            string lpFileName);

        /// <summary>
        /// INIファイルから値を読み込み（セクション＋キー指定）
        /// </summary>
        public static string ReadValue(string? iniPath, string section, string key, string defaultValue = "")
        {
            if (string.IsNullOrEmpty(iniPath)) iniPath = INI_PATH;
            var sb = new StringBuilder(1024);
            GetPrivateProfileString(section, key, defaultValue, sb, sb.Capacity, iniPath);
            var str = sb.ToString();
            str = string.IsNullOrEmpty(str) ? defaultValue : str;
            return str;
        }

        /// <summary>
        /// INIファイルに値を書き込み（セクション＋キー＋値指定）
        /// </summary>
        public static bool WriteValue(string iniPath, string section, string key, string value)
        {
            if (string.IsNullOrEmpty(iniPath)) iniPath = INI_PATH;
            return WritePrivateProfileString(section, key, value, iniPath);
        }
    }
}