using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization.Formatters;
using System.Text;
using System.Threading.Tasks;
using Windows.Storage;
using Windows.System;

namespace SmartCharging
{
    class Config
    {
        private static Config instance;
        private const string CONFIG_FILE_PATH = "ms-appx:///config.json";
        private Dictionary<string, string> configDictionary;

        private async Task loadConfig()
        {
            if (this.configDictionary == null)
            {
               // StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
                //StorageFile configFile = await storageFolder.GetFileAsync(CONFIG_FILE_PATH);

                StorageFile configFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri(CONFIG_FILE_PATH));
               
                string text = await Windows.Storage.FileIO.ReadTextAsync(configFile);
                configDictionary = JsonConvert.DeserializeObject<Dictionary<string, string>>(text);
            }
            

        }

        public async Task<string> getConfigValueByKey(string key)
        {
            await loadConfig();
            return configDictionary[key];
        }




        public static  Config Instance
        {
            get
            {
                if (instance == null)
                {
                    instance = new Config();
                }
                return instance;
            }
        }


    }
}