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

namespace Construction.BatchCreateMap
{
    /// <summary>
    /// ini类型文件操作类
    /// </summary>
    public class INIHelper
    {
        ///// <summary>
        ///// 删除键的值
        ///// </summary>
        ///// <param name="section">节点名</param>
        ///// <param name="key">键名</param>
        ///// <param name="filePath">INI文件完整路径</param>
        ///// <returns>非零表示成功，零表示失败</returns>
        //public static int DeleteKey(string section, string key, string filePath)
        //{
        //    return Write(section, key, null, filePath);
        //}

        ///// <summary>
        ///// 删除节
        ///// </summary>
        ///// <param name="section">节点名</param>
        ///// <param name="filePath">INI文件完整路径</param>
        ///// <returns>非零表示成功，零表示失败</returns>
        //public static int DeleteSection(string section, string filePath)
        //{
        //    return Write(section, null, null, filePath);
        //}

        /// <summary>
        /// 读取INI文件值
        /// </summary>
        /// <param name="section">节点名</param>
        /// <param name="key">键</param>
        /// <param name="defaultValue">The default value.</param>
        /// <param name="filePath">INI文件完整路径</param>
        /// <returns>读取的值</returns>
        //public static string Read(string section, string key, string defaultValue, string filePath)
        //{
        //    StringBuilder sb = new StringBuilder(1024);
        //    GetPrivateProfileString(section, key, defaultValue, sb, 1024, filePath);
        //    return sb.ToString();
        //}

        /// <summary>
        /// 写INI文件值
        /// </summary>
        /// <param name="section">欲在其中写入的节点名称</param>
        /// <param name="key">欲设置的项名</param>
        /// <param name="value">要写入的新字符串</param>
        /// <param name="filePath">INI文件完整路径</param>
        /// <returns>非零表示成功，零表示失败</returns>
        //public static int Write(string section, string key, string value, string filePath)
        //{
        //    if (!File.Exists(filePath))
        //    {
        //        File.Create(filePath);
        //    }

        //    return WritePrivateProfileString(section, key, value, filePath);
        //}

        /// <summary>
        /// 为INI文件中指定的节点取得字符串
        /// </summary>
        /// <param name="lpAppName">欲在其中查找关键字的节点名称</param>
        /// <param name="lpKeyName">欲获取的项名</param>
        /// <param name="lpDefault">指定的项没有找到时返回的默认值</param>
        /// <param name="lpReturnedString">指定一个字串缓冲区，长度至少为nSize</param>
        /// <param name="nSize">指定装载到lpReturnedString缓冲区的最大字符数量</param>
        /// <param name="lpFileName">INI文件完整路径</param>
        /// <returns>复制到lpReturnedString缓冲区的字节数量，其中不包括那些NULL中止字符</returns>
        //[DllImport("kernel32")]
        //private static extern int GetPrivateProfileString(
        //    string lpAppName,
        //    string lpKeyName,
        //    string lpDefault,
        //    StringBuilder lpReturnedString,
        //    int nSize,
        //    string lpFileName);

        /// <summary>
        /// 修改INI文件中内容
        /// </summary>
        /// <param name="lpApplicationName">欲在其中写入的节点名称</param>
        /// <param name="lpKeyName">欲设置的项名</param>
        /// <param name="lpString">要写入的新字符串</param>
        /// <param name="lpFileName">INI文件完整路径</param>
        /// <returns>非零表示成功，零表示失败</returns>
        [DllImport("kernel32")]
        private static extern int WritePrivateProfileString(
            string lpApplicationName,
            string lpKeyName,
            string lpString,
            string lpFileName);
    }
}