using GPW.CORE.Data;
using GPW.CORE.Data.DbModels;
using Microsoft.AspNetCore.Identity.UI.Services;
using Newtonsoft.Json;
using NLog;
using StackExchange.Redis;
using System.Diagnostics;

namespace GPW.CORE.Api.Data
{
    public class ApiDataService : IDisposable
    {
        #region Public Fields

        /// <summary>
        /// Classe Accesso metodi DB
        /// </summary>
        public static CORE.Data.Controllers.GPWController dbController = null!;

        #endregion Public Fields

        #region Public Constructors

        /// <summary>
        /// Init classe
        /// </summary>
        /// <param name="configuration"></param>
        /// <param name="logger"></param>
        /// <param name="emailSender"></param>
        /// <param name="redisCacheClient"></param>
        public ApiDataService(IConfiguration configuration, ILogger<ApiDataService> logger, IEmailSender emailSender, IConnectionMultiplexer redisConn)
        {
            _logger = logger;
            _configuration = configuration;
            _emailSender = emailSender;
            // setup compoenti REDIS
            var redConnString = _configuration.GetConnectionString("Redis");
            if (redConnString == null)
            {
                _logger.LogError("REDIS ConnString empty!");
            }
            else
            {
                this.redisConn = ConnectionMultiplexer.Connect(redConnString);
                this.redisDb = this.redisConn.GetDatabase();
            }

            // Conf DB
            var connStrDB = _configuration.GetConnectionString("GPW.DB");
            if (string.IsNullOrEmpty(connStrDB))
            {
                _logger.LogError("ConnString empty!");
            }
            else
            {
                dbController = new CORE.Data.Controllers.GPWController(configuration);
                _logger.LogInformation("DbController OK");
            }
        }

        #endregion Public Constructors

        #region Public Methods

        /// <summary>
        /// Recupera l'elenco fasi (ATTIVE)
        /// </summary>
        /// <returns></returns>
        public async Task<List<AnagFasiModel>> AnagFasiActiv()
        {
            List<AnagFasiModel>? dbResult = new List<AnagFasiModel>();
            string cacheKey = $"{rKeyFasiAct}";
            trackCache(cacheKey);
            string rawData = await getRSV(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<AnagFasiModel>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.AnagFasiAll(true);
                rawData = JsonConvert.SerializeObject(dbResult, Formatting.None, new JsonSerializerSettings() { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
                await setRSV(cacheKey, rawData, shortTTL);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                Log.Trace($"Effettuata lettura da DB per AnagFasiActiv: {ts.TotalMilliseconds} ms");
            }
            if (dbResult == null)
            {
                dbResult = new List<AnagFasiModel>();
            }
            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Recupera l'elenco progetti (ATTIVI)
        /// </summary>
        /// <returns></returns>
        public async Task<List<AnagProgettiModel>> AnagProjActiv()
        {
            List<AnagProgettiModel>? dbResult = new List<AnagProgettiModel>();
            string cacheKey = $"{rKeyProjAct}";
            trackCache(cacheKey);
            string rawData = await getRSV(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<List<AnagProgettiModel>>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.AnagProjAll(true);
                rawData = JsonConvert.SerializeObject(dbResult, Formatting.None, new JsonSerializerSettings() { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
                await setRSV(cacheKey, rawData, shortTTL);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                Log.Trace($"Effettuata lettura da DB per AnagProjActiv: {ts.TotalMilliseconds} ms");
            }
            if (dbResult == null)
            {
                dbResult = new List<AnagProgettiModel>();
            }
            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Vista dati per FASE (tipicamente master...) con totalizzaizone ore budget/real e stato fase
        /// </summary>
        /// <param name="idxFase"></param>
        /// <returns></returns>
        public async Task<CalcOreFasiModel> CalcOreFase(int idxFase, bool doLog)
        {
            CalcOreFasiModel? dbResult = new CalcOreFasiModel();
            string cacheKey = $"{rKeyCalcOreFase}:{idxFase}";
            trackCache(cacheKey);
            string rawData = await getRSV(cacheKey);
            if (!string.IsNullOrEmpty(rawData))
            {
                dbResult = JsonConvert.DeserializeObject<CalcOreFasiModel>(rawData);
            }
            else
            {
                Stopwatch stopWatch = new Stopwatch();
                stopWatch.Start();
                dbResult = dbController.CalcOreFase(idxFase);
                rawData = JsonConvert.SerializeObject(dbResult, Formatting.None, new JsonSerializerSettings() { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
                await setRSV(cacheKey, rawData, shortTTL);
                stopWatch.Stop();
                TimeSpan ts = stopWatch.Elapsed;
                if (doLog)
                {
                    Log.Trace($"Effettuata lettura da DB per CalcOreFase: {ts.TotalMilliseconds} ms");
                }
            }
            if (dbResult == null)
            {
                dbResult = new CalcOreFasiModel();
            }
            return await Task.FromResult(dbResult);
        }

        public async Task<List<CheckVc19Model>> ChecksGetByDip(int idxDip)
        {
            DateTime dtFine = DateTime.Today.AddDays(1);
            List<CheckVc19Model> dbResult = new List<CheckVc19Model>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.GetChecksVC19Filt(idxDip, dtFine.AddMonths(-1), dtFine);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per ChecksGetByDip: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(dbResult);
        }

        public async Task<List<CheckVc19Model>> ChecksGetLast(int numRecord)
        {
            List<CheckVc19Model> dbResult = new List<CheckVc19Model>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.GetChecksVC19(numRecord);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per ChecksGetLast: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Recupera record anomalie dipendenti
        /// </summary>
        /// <param name="inizio"></param>
        /// <param name="fine"></param>
        /// <param name="notOkApp"></param>
        /// <param name="notOkTim"></param>
        /// <param name="notOkLav"></param>
        public async Task<List<DipendendiAndAnomalie>> DipAndAnomGetAll(DateTime inizio, DateTime fine, bool notOkApp, bool notOkTim, bool notOkLav)
        {
            List<DipendendiAndAnomalie> dbResult = new List<DipendendiAndAnomalie>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.DipAndAnomGetAll(inizio, fine, notOkApp, notOkTim, notOkLav);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per DipAndAnomGetAll: {ts.TotalMilliseconds} ms");
            return await Task.FromResult(dbResult);
        }

        public async Task<List<DipendentiModel>> DipendentiGetAll()
        {
            List<DipendentiModel> dbResult = new List<DipendentiModel>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.DipendentiGetAll();
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per DipendentiGetAll: {ts.TotalMilliseconds} ms");
            return await Task.FromResult(dbResult);
        }

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

        /// <summary>
        /// Imposta stato di una fase
        /// </summary>
        /// <param name="idxFase">ID</param>
        /// <param name="isActive">
        /// Stato attivo true/false (se è amster -_&gt; aggiorna sottofasi x trigger su DB
        /// </param>
        /// <returns></returns>
        public async Task<bool> FasiSetActive(int idxFase, bool isActive)
        {
            return await dbController.FasiSetActive(idxFase, isActive);
        }

        public async Task<bool> InsertCheck(DCCDecode updItem, string clientIp)
        {
            bool done = false;
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            done = dbController.InsertCheck(updItem, clientIp);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata operazione InsertCheck: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(done);
        }

        public async Task<bool> InsertManual(int idxDip, string clientIp)
        {
            bool done = false;
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            done = dbController.InsertManual(idxDip, clientIp);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata operazione InsertManual: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(done);
        }

        /// <summary>
        /// invalida tutta la cache in caso di update
        /// </summary>
        /// <returns></returns>
        public async Task InvalidateAllCache()
        {
            foreach (var item in cachedDataList)
            {
                await redisDb.StringSetAsync(item, "", TimeSpan.FromMilliseconds(5));
            }
            cachedDataList = new List<string>();
        }

        /// <summary>
        /// Recupera eventi dato criteri filtro
        /// </summary>
        /// <param name="inizio"></param>
        /// <param name="fine"></param>
        /// <param name="evento"></param>
        /// <returns></returns>
        public async Task<List<RegistroEventiModel>> RegEventiGetFilt(DateTime inizio, DateTime fine, string evento)
        {
            List<RegistroEventiModel> dbResult = new List<RegistroEventiModel>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.RegEventiGetFilt(inizio, fine, evento);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per RegEventiGetFilt: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Insert/Update di un record in Registro Eventi
        /// </summary>
        /// <param name="currItem"></param>
        /// <returns></returns>
        public async Task<bool> RegEventiUpdate(RegistroEventiModel currItem)
        {
            bool done = false;
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            done = dbController.RegEventiUpdate(currItem);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata operazione RegEventiUpdate: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(done);
        }

        /// <summary>
        /// Recupera record anomalie dipendenti
        /// </summary>
        /// <param name="idxDipendente">singolo idx oppure 0 = tutti</param>
        /// <param name="dataFrom"></param>
        /// <param name="dataTo"></param>
        /// <param name="inatt"></param>
        /// <param name="showWE"></param>
        /// <param name="maxErrMin"></param>
        /// <param name="maxErrPlus"></param>
        /// <returns></returns>
        public async Task<List<TeRaExplModel>> TeRaExplGetAll(int idxDipendente, DateTime dataFrom, DateTime dataTo, bool inatt, bool showWE, int maxErrMin, int maxErrPlus)
        {
            List<TeRaExplModel> dbResult = new List<TeRaExplModel>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.TeRaExplGetAll(idxDipendente, dataFrom, dataTo, inatt, showWE, maxErrMin, maxErrPlus);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per TeRaExplGetAll: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Recupera record anomalie dipendenti
        /// </summary>
        /// <param name="idxDipendente">singolo idx oppure 0 = tutti</param>
        /// <param name="inizio"></param>
        /// <param name="fine"></param>
        /// <param name="notOkApp"></param>
        /// <param name="notOkTim"></param>
        /// <param name="notOkLav"></param>
        /// <returns></returns>
        public async Task<List<TimbratureExplModel>> TimbExplGetAnomalie(int idxDipendente, DateTime inizio, DateTime fine, bool notOkApp, bool notOkTim, bool notOkLav)
        {
            List<TimbratureExplModel> dbResult = new List<TimbratureExplModel>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.TimbExplGetAnomalie(idxDipendente, inizio, fine, notOkApp, notOkTim, notOkLav);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per TimbExplGetAnomalie: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Recupera record anomalie dipendenti
        /// </summary>
        /// <param name="idxDipendente">singolo idx oppure 0 = tutti</param>
        /// <param name="inizio"></param>
        /// <param name="fine"></param>
        /// <returns></returns>
        public async Task<List<TimbratureExplModel>> TimbExplGetContinuato(int idxDipendente, DateTime inizio, DateTime fine)
        {
            List<TimbratureExplModel> dbResult = new List<TimbratureExplModel>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.TimbExplGetContinuato(idxDipendente, inizio, fine);
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per TimbExplGetContinuato: {ts.TotalMilliseconds} ms");

            return await Task.FromResult(dbResult);
        }

        /// <summary>
        /// Recupera elenco anomalie x timbrature future
        /// </summary>
        /// <returns></returns>
        public async Task<List<TimbratureModel>> TimbratureAnomalieFuture()
        {
            List<TimbratureModel> dbResult = new List<TimbratureModel>();
            Stopwatch stopWatch = new Stopwatch();
            stopWatch.Start();
            dbResult = dbController.TimbratureAnomalieFuture();
            stopWatch.Stop();
            TimeSpan ts = stopWatch.Elapsed;
            Log.Trace($"Effettuata lettura da DB per TimbratureAnomalieFuture: {ts.TotalMilliseconds} ms");
            return await Task.FromResult(dbResult);
        }

        #endregion Public Methods

        #region Protected Fields

        protected const string rKeyCalcOreFase = "Check:OreFasi";
        protected const string rKeyFasiAct = "Check:FasiAct";
        protected const string rKeyProjAct = "Check:ProjAct";

        /// <summary>
        /// TTL da 1 min x cache Redis
        /// </summary>
        protected const int shortTTL = 60 * 5;

        #endregion Protected Fields

        #region Protected Methods

        /// <summary>
        /// Recupero chiave da redis
        /// </summary>
        /// <param name="rKey"></param>
        /// <returns></returns>
        protected async Task<string> getRSV(string rKey)
        {
            string answ = "";
            var rawData = await redisDb.StringGetAsync(rKey);
            if (rawData.HasValue)
            {
                answ = $"{rawData}";
            }
            return answ;
        }

        /// <summary>
        /// Salvataggio chiave in redis
        /// </summary>
        /// <param name="rKey"></param>
        /// <param name="rVal"></param>
        /// <param name="ttlSec"></param>
        /// <returns></returns>
        protected async Task<bool> setRSV(string rKey, string rVal, int ttlSec)
        {
            bool fatto = false;
            await redisDb.StringSetAsync(rKey, rVal, TimeSpan.FromSeconds(ttlSec));
            fatto = true;
            return fatto;
        }

        /// <summary>
        /// Salvataggio chiave in redis
        /// </summary>
        /// <param name="rKey"></param>
        /// <param name="rValInt"></param>
        /// <param name="ttlSec"></param>
        /// <returns></returns>
        protected async Task<bool> setRSV(string rKey, int rValInt, int ttlSec)
        {
            bool fatto = false;
            await redisDb.StringSetAsync(rKey, rValInt, TimeSpan.FromSeconds(ttlSec));
            fatto = true;
            return fatto;
        }

        /// <summary>
        /// Registra in cache chiave se non fosse già in elenco
        /// </summary>
        /// <param name="newKey"></param>
        protected void trackCache(string newKey)
        {
            if (!cachedDataList.Contains(newKey))
            {
                cachedDataList.Add(newKey);
            }
        }

        #endregion Protected Methods

        #region Private Fields

        private static IConfiguration _configuration = null!;

        private static ILogger<ApiDataService> _logger = null!;

        private static NLog.Logger Log = LogManager.GetCurrentClassLogger();

        private readonly IEmailSender _emailSender;

        //private readonly IDistributedCache distributedCache;
        //private readonly IRedisCacheClient _redisCacheClient;

        /// <summary>
        /// Elenco obj in cache
        /// </summary>
        private List<string> cachedDataList = new List<string>();

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

        /// <summary>
        /// Oggetto DB redis da impiegare x chiamate R/W
        /// </summary>
        private IDatabase redisDb = null!;

        #endregion Private Fields
    }
}