using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace HMI.Simple.Util
{
    public class ParameterUtil
    {
        private static string Company = "JingCe";
        private static string Program = "HMI";
        public static string GetCommonParameterValue(string path, string name)
        {
            if (!File.Exists(path)) return null;
            List<ParameterData> datas = XmlHelper.DeserializeFromXml<List<ParameterData>>(path);
            ParameterData data = datas.FirstOrDefault(d => d.Name == name);
            if (data == null) return null;
            return data.Value;
        }

        /// <summary>
        /// 获取HMI里配置的参数
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static string GetCommonParameterValue(string name, out string errMsg)
        {
            errMsg = string.Empty;
            try
            {
                string registryPath = $@"SOFTWARE\{Company}\{Program}";
                // 尝试打开注册表键
                using (RegistryKey key = Registry.LocalMachine.OpenSubKey(registryPath))
                {
                    if (key == null)
                    {
                        errMsg = "注册表不存在，请先运行一次HMI";
                        return null;
                    }

                    string value = key.GetValue("Location")?.ToString();
                    if (string.IsNullOrEmpty(value))
                    {
                        errMsg = "注册表不存在，请先运行一次HMI";
                        return null;
                    }
                    string path = Path.Combine(value, "Config", "Parameter", "CommonParameter.data");
                    if (!File.Exists(path))
                    {
                        errMsg = "未找到配置文件";
                        return null;
                    }
                    List<ParameterData> datas = XmlHelper.DeserializeFromXml<List<ParameterData>>(path);
                    ParameterData data = datas.FirstOrDefault(d => d.Name == name);
                    if (data == null)
                    {
                        errMsg = "未找到参数，请检查配置";
                        return null;
                    }
                    ;
                    return data.Value;
                }
            }
            catch (Exception ex)
            {
                errMsg = ex.Message;
                return null;
            }
        }
    }
}