using System.Text.Json;

namespace WorkCameraExport.Models
{
    /// <summary>
    /// 应用程序设置
    /// </summary>
    public class AppSettings
    {
        private static readonly string SettingsPath = Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
            "WorkCameraExport",
            "settings.json");

        /// <summary>
        /// 服务器地址
        /// </summary>
        public string ServerUrl { get; set; } = "";

        /// <summary>
        /// 用户名
        /// </summary>
        public string Username { get; set; } = "";

        /// <summary>
        /// 记住登录状态
        /// </summary>
        public bool RememberMe { get; set; }

        /// <summary>
        /// 保存的Token
        /// </summary>
        public string SavedToken { get; set; } = "";

        /// <summary>
        /// Token过期时间
        /// </summary>
        public DateTime? TokenExpireTime { get; set; }

        /// <summary>
        /// 默认导出路径
        /// </summary>
        public string DefaultExportPath { get; set; } = "";

        /// <summary>
        /// 加载设置
        /// </summary>
        public static AppSettings Load()
        {
            try
            {
                if (File.Exists(SettingsPath))
                {
                    var json = File.ReadAllText(SettingsPath);
                    return JsonSerializer.Deserialize<AppSettings>(json) ?? new AppSettings();
                }
            }
            catch
            {
                // 忽略加载错误，返回默认设置
            }
            return new AppSettings();
        }

        /// <summary>
        /// 保存设置
        /// </summary>
        public void Save()
        {
            try
            {
                var directory = Path.GetDirectoryName(SettingsPath);
                if (!string.IsNullOrEmpty(directory) && !Directory.Exists(directory))
                {
                    Directory.CreateDirectory(directory);
                }

                var json = JsonSerializer.Serialize(this, new JsonSerializerOptions
                {
                    WriteIndented = true
                });
                File.WriteAllText(SettingsPath, json);
            }
            catch
            {
                // 忽略保存错误
            }
        }

        /// <summary>
        /// 清除登录信息
        /// </summary>
        public void ClearLoginInfo()
        {
            SavedToken = "";
            TokenExpireTime = null;
            Save();
        }
    }
}