using System.IO;
using Newtonsoft.Json;

namespace SHH.CameraDashboard.Services
{
    public static class StorageService
    {
        // 基础目录：C:\Users\Name\AppData\Local\SHH_Dashboard\
        private static readonly string BaseDir = Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
            "SHH_CameraDashboard");

        /// <summary>
        /// 泛型保存：将数据 T 序列化为指定文件名的 JSON
        /// </summary>
        public static void Save<T>(T data, string fileName) where T : class
        {
            try
            {
                if (!Directory.Exists(BaseDir)) Directory.CreateDirectory(BaseDir);

                string filePath = Path.Combine(BaseDir, fileName);
                string json = JsonConvert.SerializeObject(data, Formatting.Indented);
                File.WriteAllText(filePath, json);
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine($"存储失败 [{fileName}]: {ex.Message}");
            }
        }

        /// <summary>
        /// 泛型读取：从指定 JSON 文件反序列化为数据 T
        /// </summary>
        public static T Load<T>(string fileName) where T : class, new()
        {
            try
            {
                string filePath = Path.Combine(BaseDir, fileName);
                if (!File.Exists(filePath)) return new T();

                string json = File.ReadAllText(filePath);
                return JsonConvert.DeserializeObject<T>(json) ?? new T();
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine($"读取失败 [{fileName}]: {ex.Message}");
                return new T();
            }
        }
    }
}