ConfigManager.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Text.Json;

namespace ProcessFreezer
{
    /// <summary>
    /// 配置管理器
    /// </summary>
    public class ConfigManager
    {
        private static readonly string ConfigPath = Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
            "ProcessFreezer",
            "config.json");

        /// <summary>
        /// 应用配置
        /// </summary>
        public class AppConfig
        {
            public List<string> MonitoredProcesses { get; set; } = new();
            public int ScanIntervalSeconds { get; set; } = 30;
            public int MemoryThresholdMB { get; set; } = 10;
            public bool AutoStart { get; set; } = true;
            public bool LowerPriorityForMonitored { get; set; } = false;
            public int ReTrimDeltaMB { get; set; } = 40;
        }

        /// <summary>
        /// 加载配置
        /// </summary>
        public static AppConfig Load()
        {
            try
            {
                if (File.Exists(ConfigPath))
                {
                    var json = File.ReadAllText(ConfigPath);
                    return JsonSerializer.Deserialize<AppConfig>(json) ?? new AppConfig();
                }
            }
            catch
            {
                // 配置损坏，返回默认
            }
            return new AppConfig();
        }

        /// <summary>
        /// 保存配置
        /// </summary>
        public static void Save(AppConfig config)
        {
            try
            {
                var dir = Path.GetDirectoryName(ConfigPath);
                if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }

                var options = new JsonSerializerOptions { WriteIndented = true };
                var json = JsonSerializer.Serialize(config, options);
                File.WriteAllText(ConfigPath, json);
            }
            catch
            {
                // 保存失败，忽略
            }
        }
    }
}