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

namespace Helper
{
    /// <summary>
    /// INI文件操作辅助类
    /// </summary>
    public class INIHelper
    {
        public string path;
        /// <summary>
        /// 传入INI文件路径构造对象
        /// </summary>
        /// <param name="iniPath">INI文件路径</param>
        public INIHelper(string iniPath)
        {
            path = iniPath;
        }

        [DllImport("kernel32")]
        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal,
        int size, string filePath);


        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string defVal, Byte[] retVal,
        int size, string filePath);


        /// <summary>
        /// 写INI文件
        /// </summary>
        /// <param name="section">分组节点</param>
        /// <param name="key">关键字</param>
        /// <param name="value">值</param>
        public void IniWriteValue(string section, string key, string value)
        {
            WritePrivateProfileString(section, key, value, path);
        }

        /// <summary>
        /// 读取INI文件
        /// </summary>
        /// <param name="section">分组节点</param>
        /// <param name="key">关键字</param>
        /// <returns></returns>
        public string IniReadValue(string section, string key)
        {
            var temp = new StringBuilder(255);
            int i = GetPrivateProfileString(section, key, "", temp, 255, path);
            return temp.ToString();
        }

        public byte[] IniReadValues(string section, string key)
        {
            var temp = new byte[255];
            int i = GetPrivateProfileString(section, key, "", temp, 255, path);
            return temp;
        }

        /// <summary>
        /// 删除ini文件下所有段落
        /// </summary>
        public void ClearAllSection()
        {
            IniWriteValue(null, null, null);
        }

        /// <summary>
        /// 删除ini文件下指定段落下的所有键
        /// </summary>
        /// <param name="section"></param>
        public void ClearSection(string section)
        {
            IniWriteValue(section, null, null);
        }
    }
}