ConfigHelper.cs

using Newtonsoft.Json.Linq;

namespace HexoArticleEditor
{
    /// <summary>
    /// 配置读取帮助类
    /// </summary>
    public static class ConfigHelper
    {
        /// <summary>
        /// 配置文件路径
        /// </summary>
        public static string ConfigFileName { get; set; } = @"Config.json";

        private static object ReadLock { get; set; } = new object();

        private static object WriteLock { get; set; } = new object();

        /// <summary>
        /// 读取配置
        /// </summary>
        /// <param name="sectionName">需要读取的配置键名</param>
        /// <typeparam name="T">类型</typeparam>
        /// <returns>目标类型的配置</returns>
        public static T GetConfig<T>(string sectionName, T defaultValue = default)
        {
            lock (ReadLock)
            {
                if (File.Exists(ConfigFileName) is false)
                {
                    File.WriteAllText(ConfigFileName, "{}");
                }

                var o = JObject.Parse(File.ReadAllText(ConfigFileName));
                if (o.ContainsKey(sectionName))
                {
                    return o[sectionName].ToObject<T>();
                }

                if (defaultValue != null)
                {
                    SetConfig<T>(sectionName, defaultValue);
                    return defaultValue;
                }

                if (typeof(T) == typeof(string))
                {
                    return (T)(object)"";
                }

                if (typeof(T) == typeof(int))
                {
                    return (T)(object)0;
                }

                if (typeof(T) == typeof(long))
                {
                    return default;
                }

                return typeof(T) == typeof(bool)
                    ? (T)(object)false
                    : typeof(T) == typeof(List<>) ? defaultValue : typeof(T) == typeof(object) ? (T)(object)new { } : throw new Exception("无法默认返回");
            }
        }

        public static void SetConfig<T>(string sectionName, T value)
        {
            lock (WriteLock)
            {
                if (File.Exists(ConfigFileName) is false)
                {
                    File.WriteAllText(ConfigFileName, "{}");
                }

                var o = JObject.Parse(File.ReadAllText(ConfigFileName));
                if (o.ContainsKey(sectionName))
                {
                    o[sectionName] = JToken.FromObject(value);
                }
                else
                {
                    o.Add(sectionName, JToken.FromObject(value));
                }

                File.WriteAllText(ConfigFileName, o.ToString(Newtonsoft.Json.Formatting.Indented));
            }
        }
    }
}