using Newtonsoft.Json;
using System.IO;
using System.Security.Permissions;
using System.Web;

namespace WebApp
{
    public class TableConfigRoot
    {
        public System.Collections.Generic.List<TableConfig> Tables { get; set; }
    }

    public class TableConfig
    {
        public string Key { get; set; }
        public string DisplayName { get; set; }
        public string SqlList { get; set; }
        public string SqlById { get; set; }
        public string IdField { get; set; }
        public string DisplayField { get; set; }
        public string JsonField { get; set; }
        public string Buttons { get; set; }
        public string AnzeigeDokument { get; set; }
        public string FilterColumns { get; set; }
    }

    public static class TableConfigProvider
    {
        private static TableConfigRoot _cache;

        public static TableConfigRoot LoadConfig()
        {
            if (_cache != null)
                return _cache;

            // ✅ HttpContext.Current verwenden statt Context
            string path = HttpContext.Current.Server.MapPath("~/App_Data/TableConfig.json");

            if (!File.Exists(path))
                throw new FileNotFoundException("TableConfig.json nicht gefunden", path);

            string json = File.ReadAllText(path);
            _cache = JsonConvert.DeserializeObject<TableConfigRoot>(json);
            if (_cache.Tables == null) _cache.Tables = new System.Collections.Generic.List<TableConfig>();
            return _cache;
        }

        public static void ResetCache() => _cache = null;
    }
}