using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.Caching.Memory;
using MP.MONO.Data.Controllers;
using NLog;

namespace MP.MONO.UI.Data
{
    public class CurrentDataService : IDisposable
    {

        private static IConfiguration _configuration;
        private static ILogger<CurrentDataService> _logger;
        private static NLog.Logger Log = LogManager.GetCurrentClassLogger();
        private readonly IEmailSender _emailSender;
        private readonly IDistributedCache distributedCache;
        private readonly IMemoryCache memoryCache;

        public static MpDbController dbController;

        /// <summary>
        /// Durata assoluta massima della cache IN SECONDI
        /// </summary>
        private int chAbsExp = 60 * 5;

        /// <summary>
        /// Durata della cache IN SECONDI in modalità inattiva (non acceduta) prima di venire rimossa
        /// NON estende oltre il tempo massimo di validità della cache (chAbsExp)
        /// </summary>
        private int chSliExp = 60 * 1;

        public CurrentDataService(IConfiguration configuration, ILogger<CurrentDataService> logger, IMemoryCache memoryCache, IDistributedCache distributedCache, IEmailSender emailSender)
        {
            _logger = logger;
            _configuration = configuration;
            _emailSender = emailSender;
            // conf cache
            this.memoryCache = memoryCache;
            this.distributedCache = distributedCache;
            // conf DB
            string connStr = _configuration.GetConnectionString("MP.MONO.Data");
            if (string.IsNullOrEmpty(connStr))
            {
                _logger.LogError("ConnString empty!");
            }
            else
            {
                dbController = new MpDbController(configuration);
                _logger.LogInformation("DbController OK");
            }
        }

        private DistributedCacheEntryOptions cacheOpt(bool fastCache)
        {
            var numSecAbsExp = fastCache ? chAbsExp : chAbsExp * 10;
            var numSecSliExp = fastCache ? chSliExp : chSliExp * 10;
            return new DistributedCacheEntryOptions().SetAbsoluteExpiration(DateTime.Now.AddSeconds(numSecAbsExp)).SetSlidingExpiration(TimeSpan.FromSeconds(numSecSliExp));
        }
        public void Dispose()
        {
            // Clear database controller
            dbController.Dispose();
        }


        /// <summary>
        /// Hash Redis contenente i dati MP di una specifico TYPE (es StatusMacchina, StateMachineIngressi, ...)
        /// </summary>
        /// <param name="dataType"></param>
        /// <returns></returns>
        private static string mHash(string dataType)
        {
            return $"DATA:{dataType}";
        }

        protected Dictionary<string, string> ParametersList { get; set; } = new Dictionary<string, string>();

        public async Task<Dictionary<string, string>> GetCurrentParameters()
        {
            //ParametersList = new Dictionary<string, string>();
            //ParametersList.Add("Speed", $"{Random.Shared.Next(0, 5000)}");
            //ParametersList.Add("Feed", $"{Random.Shared.Next(0, 10000)}");
            //ParametersList.Add("Load", $"{Random.Shared.Next(0, 100)}");
            //return ParametersList;
            ParametersList = Enumerable.Range(1, 20)
                .ToDictionary(x => $"Par{x:00}", x => $"{Random.Shared.Next(0, 1000)}");
            await Task.Delay(1);
            return ParametersList;
        }
    }
}