using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Configuration;
using System.Text;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using MP.Data;
using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.Caching.Memory;
using Newtonsoft.Json;

namespace MP.Stats.Data
{
    public class MpStatsService
    {
        #region Private Fields

        private static IConfiguration _configuration;
        private static ILogger<MpStatsService> _logger;

        private static List<MP.Data.DatabaseModels.AzioniUL> ActionsList = new List<MP.Data.DatabaseModels.AzioniUL>();
        private readonly IDistributedCache distributedCache;
        private readonly IMemoryCache memoryCache;

        private DistributedCacheEntryOptions cacheOpt;

        /// <summary>
        /// Durata assoluta massima della cache
        /// </summary>
        private int chAbsExp = 15;

        /// <summary>
        /// Durata della cache in modalità inattiva (non acceduta) prima di venire rimossa
        /// NON estende oltre il tempo massimo di validità Abs della cache
        /// </summary>
        private int chSliExp = 5;

        #endregion Private Fields

        #region Protected Fields

        protected static string connStringBBM = "";
        protected static string connStringFatt = "";

        #endregion Protected Fields

        #region Public Fields

        public static MP.Data.Controllers.MpStatsController dbController;

        #endregion Public Fields

        #region Public Constructors

        public MpStatsService(IConfiguration configuration, ILogger<MpStatsService> logger, IMemoryCache memoryCache, IDistributedCache distributedCache)
        {
            _logger = logger;
            _configuration = configuration;
            // conf cache
            this.memoryCache = memoryCache;
            this.distributedCache = distributedCache;
            cacheOpt = new DistributedCacheEntryOptions().SetAbsoluteExpiration(DateTime.Now.AddMinutes(chAbsExp)).SetSlidingExpiration(TimeSpan.FromMinutes(chSliExp));
            // conf DB
            string connStr = _configuration.GetConnectionString("Mp.Stats");
            if (string.IsNullOrEmpty(connStr))
            {
                _logger.LogError("ConnString empty!");
            }
            else
            {
                dbController = new MP.Data.Controllers.MpStatsController(configuration);
                StringBuilder sb = new StringBuilder();
                sb.AppendLine($"DbController OK");
                //sb.AppendLine($"CST: {dbController.CustomersCount()} | CNT: {dbController.CountersCount()} | BSK: {dbController.BasketsCount()} | NGT: {dbController.NegotiationsCount()} | DOC: {dbController.DocsCount()} | ITM: {dbController.ItemsCount()} | RES: {dbController.ResourcesCount()}");
                _logger.LogInformation(sb.ToString());
            }
        }

        #endregion Public Constructors

        #region Protected Methods

        protected string getCacheKey(string TableName, SelectData CurrFilter)
        {
            string answ = $"{TableName}:M_{CurrFilter.IdxMacchina}:A_{CurrFilter.CodArticolo}:K_{CurrFilter.KeyRichiesta}:O_{CurrFilter.IdxOdl}:D_{CurrFilter.DateStart:yyyyMMddHHmm}_{CurrFilter.DateEnd:yyyyMMddHHmm}";
            return answ;
        }

        #endregion Protected Methods

        #region Public Methods

        public Task<MP.Data.DatabaseModels.AzioniUL[]> ActionsGetAll()
        {
            return Task.FromResult(dbController.ActionsGetAll().ToArray());
        }

        public void rollBackEdit(object item)
        {
            dbController.RollBackEntity(item);
        }

        public Task<MP.Data.DatabaseModels.AnagArticoli[]> StatArticoliGetSearch(int numRecord, string searchVal = "")
        {
            return Task.FromResult(dbController.StatArticoliGetSearch(numRecord, searchVal).ToArray());
        }

        public Task<MP.Data.DatabaseModels.ResControlli[]> StatControlliGetAll(DateTime DataStart, DateTime DataEnd, string IdxMacchina, int IdxODL, string KeyRichiesta, string CodArticolo, string searchVal = "")
        {
            return Task.FromResult(dbController.StatControlliGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
        }

        public Task<MP.Data.DatabaseModels.DdbTurni[]> StatDdbGetAll(int numRecord, string searchVal = "")
        {
            return Task.FromResult(dbController.StatDdbGetAll(numRecord, searchVal).ToArray());
        }

        public Task<MP.Data.DatabaseModels.Macchine[]> StatMacchineGetAll()
        {
            return Task.FromResult(dbController.StatMacchineGetAll().ToArray());
        }

        public Task<MP.Data.DatabaseModels.ODL[]> StatOdlGetAll(int numRecord, string searchVal = "")
        {
            return Task.FromResult(dbController.StatOdlGetAll(numRecord, searchVal).ToArray());
        }

        public Task<MP.Data.DatabaseModels.ResScarti[]> StatScartiGetAll(DateTime DataStart, DateTime DataEnd, string IdxMacchina, int IdxODL, string KeyRichiesta, string CodArticolo, string searchVal = "")
        {
            // filtra e restituisce SOLO i primi record...
            return Task.FromResult(dbController.StatScartiGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
        }

        public async Task<List<MP.Data.DatabaseModels.TurniOee>> StatTurniOeeGetAllAsync(DateTime DataStart, DateTime DataEnd, string IdxMacchina, int IdxODL, string KeyRichiesta, string CodArticolo, string searchVal = "")
        {
            return await Task.FromResult(dbController.StatTurniOeeGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo));
        }

        public async Task<List<MP.Data.DatabaseModels.TurniOee>> StatTurniOeeGetAllCached(SelectData CurrFilter, string searchVal = "")
        {
            List<MP.Data.DatabaseModels.TurniOee> dbResult = new List<MP.Data.DatabaseModels.TurniOee>();
            string cacheKey = getCacheKey("MP:STATS:OEE", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.TurniOee>>(rawData);
            }
            else
            {
                dbResult = dbController.StatTurniOeeGetAll(CurrFilter.DateStart, CurrFilter.DateEnd, CurrFilter.IdxMacchina, CurrFilter.IdxOdl, CurrFilter.KeyRichiesta, CurrFilter.CodArticolo);
                rawData = JsonConvert.SerializeObject(dbResult);
                redisDataList = Encoding.UTF8.GetBytes(rawData);
                await distributedCache.SetAsync(cacheKey, redisDataList, cacheOpt);
            }
            return await Task.FromResult(dbResult);
        }

        public Task<MP.Data.DatabaseModels.TurniPareto[]> StatTurniParetoGetAll(DateTime DataStart, DateTime DataEnd, string IdxMacchina, int IdxODL, string KeyRichiesta, string CodArticolo, string searchVal = "")
        {
            return Task.FromResult(dbController.StatTurniParetoGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
        }

        public Task<MP.Data.DatabaseModels.TurniParetoOdl[]> StatTurniParetoOdlGetAll(DateTime DataStart, DateTime DataEnd, string IdxMacchina, int IdxODL, string KeyRichiesta, string CodArticolo, string searchVal = "")
        {
            return Task.FromResult(dbController.StatTurniParetoOdlGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
        }

        public Task<MP.Data.DatabaseModels.UserActionLog[]> StatUserLogGetAll(DateTime DataStart, DateTime DataEnd, string IdxMacchina, int IdxODL, string KeyRichiesta, string CodArticolo, string searchVal = "")
        {
            return Task.FromResult(dbController.StatUserLogGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
        }

        #endregion Public Methods
    }
}