using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.Caching.Memory;
using MP.MONO.Core.DTO;
using MP.MONO.Data;
using MP.MONO.Data.Controllers;
using Newtonsoft.Json;
using NLog;
using StackExchange.Redis;

namespace MP.MONO.UI.Data
{
    public class CurrentDataService : IDisposable
    {
        #region Private Fields

        private static IConfiguration _configuration;
        private static ILogger<CurrentDataService> _logger;
        private static NLog.Logger Log = LogManager.GetCurrentClassLogger();

        /// <summary>
        /// Oggetto per connessione a REDIS
        /// </summary>
        private ConnectionMultiplexer redisConn = null!;

        //ISubscriber sub = redis.GetSubscriber();
        /// <summary>
        /// Oggetto DB redis da impiegare x chiamate R/W
        /// </summary>
        private IDatabase redisDb = null!;

        #endregion Private Fields

        #region Public Fields

        /// <summary>
        /// Controller dati da DB
        /// </summary>
        public static MpDbController dbController;

        #endregion Public Fields

        #region Public Constructors

        public CurrentDataService(IConfiguration configuration, ILogger<CurrentDataService> logger, IConnectionMultiplexer redisConn)
        {
            _logger = logger;
            _configuration = configuration;

            // setup compoenti REDIS
            this.redisConn = ConnectionMultiplexer.Connect(_configuration.GetConnectionString("Redis"));
            this.redisDb = this.redisConn.GetDatabase();
            // setup canali pub/sub
            alarmPipe = new MessagePipe(redisConn, "allarms");
            parametersPipe = new MessagePipe(redisConn, "parameters");
            statusPipe = new MessagePipe(redisConn, "status");
            productionPipe = new MessagePipe(redisConn, "production");
            machStatsPipe = new MessagePipe(redisConn, "machstats");
            maintPipe = new MessagePipe(redisConn, "maintenance");
            toolsPipe = new MessagePipe(redisConn, "tools");
            machEvPipe = new MessagePipe(redisConn, "events");
            actLogPipe = new MessagePipe(redisConn, "activitylog");

            // 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");
            }
        }

        #endregion Public Constructors

        #region Public Properties

        public MessagePipe alarmPipe { get; set; } = null!;
        public MessagePipe machStatsPipe { get; set; } = null!;
        public MessagePipe maintPipe { get; set; } = null!;
        public MessagePipe parametersPipe { get; set; } = null!;
        public MessagePipe productionPipe { get; set; } = null!;
        public MessagePipe statusPipe { get; set; } = null!;
        public MessagePipe toolsPipe { get; set; } = null!;
        public MessagePipe machEvPipe { get; set; } = null!;
        public MessagePipe actLogPipe { get; set; } = null!;

        #endregion Public Properties

        #region Private Methods

        /// <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 $"MAPO-MONO:{dataType}";
        }

        #endregion Private Methods

        #region Public Methods

        public void Dispose()
        {
            // Clear database controller
            dbController.Dispose();
        }

        public async Task<List<DisplayDataDTO>> MachineStats()
        {
            List<DisplayDataDTO>? dbResult = new List<DisplayDataDTO>();
            string cacheKey = mHash("Machine:MachStats:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new List<DisplayDataDTO>();
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<List<DisplayDataDTO>> MachineParameters()
        {
            List<DisplayDataDTO>? dbResult = new List<DisplayDataDTO>();
            string cacheKey = mHash("Machine:Parameters:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new List<DisplayDataDTO>();
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<ProductionDTO> MachineProd()
        {
            ProductionDTO? dbResult = new ProductionDTO();
            string cacheKey = mHash("Machine:Production:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<ProductionDTO>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new ProductionDTO();
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<MachineDTO> MachineStatus()
        {
            MachineDTO? dbResult = new MachineDTO();
            string cacheKey = mHash("Machine:Status:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<MachineDTO>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new MachineDTO();
            }
            return await Task.FromResult(dbResult);
        }


        public async Task<List<DisplayDataDTO>> MachineMaintenance()
        {
            List<DisplayDataDTO>? dbResult = new List<DisplayDataDTO>();
            string cacheKey = mHash("Machine:Maintenance:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new List<DisplayDataDTO>();
            }
            return await Task.FromResult(dbResult);
        }
        public async Task<List<DisplayDataDTO>> MachineTools()
        {
            List<DisplayDataDTO>? dbResult = new List<DisplayDataDTO>();
            string cacheKey = mHash("Machine:Tools:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new List<DisplayDataDTO>();
            }
            return await Task.FromResult(dbResult);
        }
        public async Task<List<DisplayDataDTO>> MachineActLog()
        {
            List<DisplayDataDTO>? dbResult = new List<DisplayDataDTO>();
            string cacheKey = mHash("Machine:ActivityLog:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new List<DisplayDataDTO>();
            }
            return await Task.FromResult(dbResult);
        }
        public async Task<List<DisplayDataDTO>> MachineEventHist()
        {
            List<DisplayDataDTO>? dbResult = new List<DisplayDataDTO>();
            string cacheKey = mHash("Machine:Events:Current");
            string rawData = await redisDb.StringGetAsync(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(rawData);
            }
            if (dbResult == null)
            {
                dbResult = new List<DisplayDataDTO>();
            }
            return await Task.FromResult(dbResult);
        }

        #endregion Public Methods
    }
}