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

namespace MP.Stats.Data
{
    public class MpStatsService : IDisposable
    {
        #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;

        /// <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 della cache (chAbsExp)
        /// </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;
            // 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 Private Properties

        private DistributedCacheEntryOptions cacheOpt
        {
            get
            {
                return new DistributedCacheEntryOptions().SetAbsoluteExpiration(DateTime.Now.AddMinutes(chAbsExp)).SetSlidingExpiration(TimeSpan.FromMinutes(chSliExp));
            }
        }

        private DistributedCacheEntryOptions cacheOptLong
        {
            get
            {
                return new DistributedCacheEntryOptions().SetAbsoluteExpiration(DateTime.Now.AddMinutes(chAbsExp * 10)).SetSlidingExpiration(TimeSpan.FromMinutes(chSliExp));
            }
        }

        #endregion Private Properties

        #region Protected Methods

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

        protected string getCacheKeyPaged(string TableName, SelectData CurrFilter)
        {
            string answ = $"{TableName}:M_{CurrFilter.IdxMacchina}:A_{CurrFilter.CodArticolo}:K_{CurrFilter.KeyRichiesta}:O_{CurrFilter.IdxOdl}:D_{CurrFilter.DateStart:yyMMddHHmm}_{CurrFilter.DateEnd:yyMMddHHmm}:R_{CurrFilter.FirstRecord}_{CurrFilter.FirstRecord + CurrFilter.NumRecord}";
            return answ;
        }

        #endregion Protected Methods

        #region Public Methods

        public async Task<List<MP.Data.DatabaseModels.AzioniUL>> ActionsGetAll()
        {
            //return Task.FromResult(dbController.ActionsGetAll());
            List<MP.Data.DatabaseModels.AzioniUL> dbResult = new List<MP.Data.DatabaseModels.AzioniUL>();
            string cacheKey = "MP:STATS:AZIONI_ALL";
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.AzioniUL>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.ActionsGetAll();
                rawData = JsonConvert.SerializeObject(dbResult);
                redisDataList = Encoding.UTF8.GetBytes(rawData);
                await distributedCache.SetAsync(cacheKey, redisDataList, cacheOpt);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per AzioniUL: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        public Task<List<AutocompleteModel>> ArticoliGetSearch(int numRecord, string searchVal = "")
        {
            List<AutocompleteModel> answ = new List<AutocompleteModel>();
            answ.Add(new AutocompleteModel { LabelField = "--- TUTTE ---", ValueField = "*" });
            if (numRecord > -1)
            {
                answ.AddRange(dbController.ArticoliGetSearch(numRecord, searchVal).Select(x => new AutocompleteModel { LabelField = $"{x.CodArticolo} {x.DescArticolo} {x.Disegno}", ValueField = x.CodArticolo }).ToList());
            }
            return Task.FromResult(answ);
        }

        public async Task<List<AutocompleteModel>> ArticoliList(string searchVal)
        {
            List<AutocompleteModel> answ = new List<AutocompleteModel>();
            answ.Add(new AutocompleteModel { LabelField = "--- TUTTE ---", ValueField = "*" });
            var listMacchine = dbController.MacchineGetAll();
            answ.AddRange(listMacchine.Select(x => new AutocompleteModel { LabelField = x.IdxMacchina, ValueField = x.IdxMacchina }).ToList());
            return await Task.FromResult(answ);
        }

        public Task<List<AutocompleteModel>> AzioniList()
        {
            List<AutocompleteModel> answ = new List<AutocompleteModel>();
            answ.Add(new AutocompleteModel { LabelField = "--- TUTTE ---", ValueField = "*" });
            answ.AddRange(dbController.ActionsGetAll().Select(x => new AutocompleteModel { LabelField = $"{x.Descrizione}", ValueField = x.Azione}).ToList());
            return Task.FromResult(answ);
        }

        public Task<List<AutocompleteModel>> CommesseGetSearch(int numRecord, string searchVal = "")
        {
            List<AutocompleteModel> answ = new List<AutocompleteModel>();
            answ.Add(new AutocompleteModel { LabelField = "--- TUTTE ---", ValueField = "*" });
            if (numRecord > -1)
            {
                answ.AddRange(dbController.CommesseGetSearch(numRecord, searchVal).GroupBy(x => x.KeyRichiesta).Select(x => new AutocompleteModel { LabelField = $"{x.First().CodArticolo} | {x.First().KeyRichiesta}", ValueField = x.First().KeyRichiesta }).ToList());
            }
            return Task.FromResult(answ);
        }

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

        public Task<List<MP.Data.DatabaseModels.Macchine>> MacchineGetAll()
        {
            return Task.FromResult(dbController.MacchineGetAll().ToList());
        }

        public Task<List<AutocompleteModel>> MachineList()
        {
            List<AutocompleteModel> answ = new List<AutocompleteModel>();
            answ.Add(new AutocompleteModel { LabelField = "--- TUTTE ---", ValueField = "*" });
            answ.AddRange(dbController.MacchineGetAll().Select(x => new AutocompleteModel { LabelField = $"{x.IdxMacchina} | {x.Nome} {x.Descrizione} ", ValueField = x.IdxMacchina }).ToList());
            return Task.FromResult(answ);
        }

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

        public async Task<List<MP.Data.DatabaseModels.ResControlli>> StatControlliGetAll(SelectData CurrFilter, string searchVal = "")
        {
            //return Task.FromResult(dbController.StatControlliGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
            List<MP.Data.DatabaseModels.ResControlli> dbResult = new List<MP.Data.DatabaseModels.ResControlli>();
            string cacheKey = getCacheKey("MP:STATS:CONTROLLI", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.ResControlli>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.StatControlliGetAll(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);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per ResControlli: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<List<MP.Data.DatabaseModels.DdbTurni>> StatDdbGetAll(SelectData CurrFilter, string searchVal = "")
        {
            //return Task.FromResult(dbController.StatDdbGetAll(numRecord, searchVal).ToArray());
            List<MP.Data.DatabaseModels.DdbTurni> dbResult = new List<MP.Data.DatabaseModels.DdbTurni>();
            string cacheKey = getCacheKeyPaged("MP:STATS:DDBT", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.DdbTurni>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.StatDdbGetAll(CurrFilter.DateStart, CurrFilter.DateEnd, CurrFilter.IdxMacchina, CurrFilter.IdxOdl, CurrFilter.KeyRichiesta, CurrFilter.CodArticolo, CurrFilter.FirstRecord, CurrFilter.NumRecord);
                rawData = JsonConvert.SerializeObject(dbResult);
                redisDataList = Encoding.UTF8.GetBytes(rawData);
                await distributedCache.SetAsync(cacheKey, redisDataList, cacheOpt);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per DdbTurni: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Recupera TUTTI x export
        /// </summary>
        /// <param name="CurrFilter"></param>
        /// <param name="searchVal"></param>
        /// <returns></returns>
        public async Task<List<MP.Data.DatabaseModels.DdbTurni>> StatDdbGetAllExport(SelectData CurrFilter, string searchVal = "")
        {
            //return Task.FromResult(dbController.StatDdbGetAll(numRecord, searchVal).ToArray());
            List<MP.Data.DatabaseModels.DdbTurni> dbResult = new List<MP.Data.DatabaseModels.DdbTurni>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.StatDdbGetAll(CurrFilter.DateStart, CurrFilter.DateEnd, CurrFilter.IdxMacchina, CurrFilter.IdxOdl, CurrFilter.KeyRichiesta, CurrFilter.CodArticolo, 1, 0);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            _logger.LogTrace($"Effettuata lettura COMPLETA da DB + caching per StatDdbGetAllExport: {ts.TotalMilliseconds} ms");
            return await Task.FromResult(dbResult);
        }

        public async Task<int> StatDdbGetCount(SelectData CurrFilter, string searchVal = "")
        {
            int numRec = 0;
            string cacheKey = getCacheKey("MP:STATS:DDBT-COUNT", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                int.TryParse(rawData, out numRec);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                numRec = dbController.StatDdbGetCount(CurrFilter.DateStart, CurrFilter.DateEnd, CurrFilter.IdxMacchina, CurrFilter.IdxOdl, CurrFilter.KeyRichiesta, CurrFilter.CodArticolo);
                rawData = $"{numRec}";
                redisDataList = Encoding.UTF8.GetBytes(rawData);
                await distributedCache.SetAsync(cacheKey, redisDataList, cacheOptLong);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per DdbTurni: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(numRec);
        }

        public async Task<List<MP.Data.DatabaseModels.StatsODL>> StatOdlGetAll(SelectData CurrFilter, string searchVal = "")
        {
            //return Task.FromResult(dbController.StatOdlGetAll(numRecord, searchVal));
            List<MP.Data.DatabaseModels.StatsODL> dbResult = new List<MP.Data.DatabaseModels.StatsODL>();
            string cacheKey = getCacheKey("MP:STATS:ODL", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.StatsODL>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.StatOdlGetAll(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);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per ODL: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<List<MP.Data.DatabaseModels.ResScarti>> StatScartiGetAll(SelectData CurrFilter, string searchVal = "")
        {
            //return Task.FromResult(dbController.StatScartiGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
            List<MP.Data.DatabaseModels.ResScarti> dbResult = new List<MP.Data.DatabaseModels.ResScarti>();
            string cacheKey = getCacheKey("MP:STATS:SCARTI:RAW", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.ResScarti>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.StatScartiGetAll(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);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per ResScarti: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        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
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                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);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per TurniOee: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<List<MP.Data.DatabaseModels.UserActionLog>> StatUserLogGetAll(SelectData CurrFilter, string searchVal = "")
        {
            //return Task.FromResult(dbController.StatUserLogGetAll(DataStart, DataEnd, IdxMacchina, IdxODL, KeyRichiesta, CodArticolo).ToArray());
            List<MP.Data.DatabaseModels.UserActionLog> dbResult = new List<MP.Data.DatabaseModels.UserActionLog>();
            string cacheKey = getCacheKey("MP:STATS:USRACTLOG", CurrFilter);
            string rawData;
            var redisDataList = await distributedCache.GetAsync(cacheKey);
            if (redisDataList != null)
            {
                rawData = Encoding.UTF8.GetString(redisDataList);
                dbResult = JsonConvert.DeserializeObject<List<MP.Data.DatabaseModels.UserActionLog>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.StatUserLogGetAll(CurrFilter.DateStart, CurrFilter.DateEnd, CurrFilter.IdxMacchina, CurrFilter.IdxOdl, CurrFilter.KeyRichiesta, CurrFilter.CodArticolo);
                // se richiesto filtro azioni effettuo ora selezione...
                if (CurrFilter.Azione != "*")
                {
                    dbResult= dbResult.Where(x => x.Azione == CurrFilter.Azione).ToList();
                }
                rawData = JsonConvert.SerializeObject(dbResult);
                redisDataList = Encoding.UTF8.GetBytes(rawData);
                await distributedCache.SetAsync(cacheKey, redisDataList, cacheOpt);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                _logger.LogTrace($"Effettuata lettura da DB + caching per UserActionLog: {ts.TotalMilliseconds} ms");
            }
            return await Task.FromResult(dbResult);
        }

        #endregion Public Methods
    }
}