using global::Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;
using MP.Core.DTO;
using MP.Core.Objects;
using MP.SPEC.Data;
using NLog;
using System.Diagnostics;
using static EgwCoreLib.Utils.DtUtils;

namespace MP.SPEC.Pages
{
    public partial class FluxLogStatus
    {
        #region Protected Fields

        protected double currVal = 0;
        protected Enums.DataInterval IntReq = Enums.DataInterval.hour;
        protected double nextVal = 0;
        protected int numRecPage = 10;
        protected int pageNum = 1;
        protected int totalCount = 0;
        protected int totRecords = 0;

        protected Enums.ValSelection ValMode = Enums.ValSelection.First;

        #endregion Protected Fields

        #region Protected Properties

        protected Dictionary<DateTime, double> actDbMaintStats { get; set; } = new Dictionary<DateTime, double>();
        protected List<StatDedupDTO> actProcDedupStats { get; set; } = new List<StatDedupDTO>();
        protected List<string> fluxList { get; set; } = new List<string>();

        [Inject]
        protected IJSRuntime JSRuntime { get; set; } = null!;

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

        protected int MaxVal
        {
            get => fluxList.Count;
        }

        [Inject]
        protected MpDataService MDataServ { get; set; } = null!;

        protected int NumItem
        {
            get => numItem;
            set
            {
                if (numItem != value)
                {
                    // controllo valori ammissibili
                    numItem = value >= 1 ? value : 1;
                    // aggiorno tempi
                    updateExpTime();
                }
            }
        }

        protected string strDbMaintTimeExp { get; set; } = "-";
        protected string strPrTimeExp { get; set; } = "-";

        #endregion Protected Properties

        #region Protected Methods

        /// <summary>
        /// Esegue cleanup dati
        /// </summary>
        /// <returns></returns>
        protected async Task DoCleanup()
        {
            if (!await JSRuntime.InvokeAsync<bool>("confirm", "Attenzione! il task di Data Cleanup eliminerà in modo definitivo i dati in eccesso secondo lo schema impostato, sei sicuro di voler procedere?"))
                return;

            isProcessing = true;
            lastDedupExecTime = "...";
            Stopwatch sw = Stopwatch.StartNew();
            int currStep = 1;
            int stepVal = 1;
            foreach (var item in fluxList)
            {
                // aggiorno valori
                currVal = (currStep - 1) * stepVal;
                nextVal = currStep * stepVal;
                await InvokeAsync(StateHasChanged);
                // periodo: fix per imporre fine alla mezzanotte di oggi (= processo tutto ieri)
                if (CurrPeriodo.Fine > DateTime.Today)
                {
                    CurrPeriodo.Fine = DateTime.Today;
                }
                // processo i flussi 1:1 x mandare DoUpdate ad avanzamento
                await MDataServ.FluxLogDataRedux(idxMaccSel, new List<string> { item }, CurrPeriodo, ValMode, IntReq, NumItem);
                currStep++;
            }
            //await MDataServ.FluxLogDataRedux(idxMaccSel, fluxList, CurrPeriodo, ValMode, IntReq, maxItem);
            sw.Stop();
            lastDedupExecTime = $"{sw.Elapsed.Minutes}m {sw.Elapsed.Seconds}s";
            isProcessing = false;
        }

        /// <summary>
        /// Esegue cleanup dati
        /// </summary>
        /// <returns></returns>
        protected async Task IdxRebuild()
        {
            if (!await JSRuntime.InvokeAsync<bool>("confirm", "Manutenzione Database: si tratta di un operazione che può richiedere un tempo levato sei sicuro di voler procedere?"))
                return;

            isReindexing = true;
            Stopwatch sw = Stopwatch.StartNew();
            lastDbMaintTime = "...";
            await InvokeAsync(StateHasChanged);
            await MDataServ.ForceDbMaint(true, true, true, 1000, 10, 50);
            sw.Stop();
            lastDbMaintTime = $"{sw.Elapsed.Minutes}m {sw.Elapsed.Seconds}s";
            isReindexing = false;
        }

        protected override void OnInitialized()
        {
            ReloadStats();
            ReloadData();
        }

        protected void ReloadMacchine()
        {
            if (ListMacchineAll == null || ListMacchineAll.Count == 0)
            {
                var rawData = MDataServ.MacchineGetFilt("*");
                // trasformo!
                if (rawData != null)
                {
                    ListMacchineAll = rawData.ToDictionary(x => x.IdxMacchina, x => $"{x.IdxMacchina} | {x.Nome}");
                }
            }
        }

        protected async Task SaveFluxList(List<string> newList)
        {
            fluxList = newList;
            await Task.Delay(1);
        }

        protected void SaveNumRec(int newNum)
        {
            if (numRecPage != newNum)
            {
                numRecPage = newNum;
            }
        }

        protected void SavePage(int newNum)
        {
            if (pageNum != newNum)
            {
                pageNum = newNum;
            }
        }

        protected async Task SetPeriodo(Periodo newPeriodo)
        {
            if (!CurrPeriodo.Equals(newPeriodo))
            {
                CurrPeriodo = newPeriodo;
            }
            await Task.Delay(1);
        }

        protected async Task SetTotCount(int numRec)
        {
            totalCount = numRec;
            await Task.Delay(1);
        }

        protected async Task SetTotRec(int numRec)
        {
            totRecords = numRec;
            await Task.Delay(1);
            updateExpTime();
        }

        #endregion Protected Methods

        #region Private Fields

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

        /// <summary>
        /// Tempo atteso processing
        /// - da calcolare in base al num eventi e alla tab logProcessing...
        /// </summary>
        private int expTimeMsec = 3000;

        private string lastDbMaintTime = "";
        private string lastDedupExecTime = "";

        #endregion Private Fields

        #region Private Properties

        private Periodo CurrPeriodo { get; set; } = new Periodo();

        private string idxMaccSel { get; set; } = "";

        private bool isProcessing { get; set; } = false;

        private bool isReindexing { get; set; } = false;

        private double msProcEst { get; set; } = 0.2;

        private int numItem { get; set; } = 1;

        #endregion Private Properties

        #region Private Methods

        private void ReloadData()
        {
            ReloadMacchine();
            DateTime dtEnd = DateTime.Today.AddDays(1);
            DateTime dtStart = dtEnd.AddMonths(-1);
            CurrPeriodo = new Periodo(dtStart, dtEnd);
        }

        private void ReloadStats()
        {
            actProcDedupStats = MDataServ.ProcFLStats();
            actDbMaintStats = MDataServ.DbDedupStats();
        }

        private void updateExpTime()
        {
            // calcolo tempo stimato e mostro...
            double msProcEst = 0.15 * numItem;
            // recupero statistiche x tipoInt e num eventi...
            var calcStats = actProcDedupStats.Where(x => x.Interval == IntReq && x.Num4Int == numItem);
            //var calcStats = actStats.Where(x => x.IdxMacchina == idxMaccSel && x.Interval == IntReq && x.Num4Int == numItem);
            if (calcStats != null && calcStats.Count() > 0)
            {
                var totSec = calcStats.Sum(x => x.ProcTime);
                var totalRec = calcStats.Sum(x => x.NumRec);
                msProcEst = totSec * 1000 / (totalRec > 1 ? totalRec : 1);
            }
            int numFlux = fluxList.Count > 1 ? fluxList.Count : 1;
            expTimeMsec = (int)Math.Ceiling(msProcEst * totRecords / numFlux);
            strPrTimeExp = "-";
            if (totRecords > 0)
            {
                var TotalTime = TimeSpan.FromMilliseconds(msProcEst * totRecords);
                if (TotalTime.TotalMinutes > 60)
                {
                    strPrTimeExp = $"{TotalTime.Hours}h {TotalTime.Minutes}m";
                }
                else
                {
                    strPrTimeExp = $"{TotalTime.Minutes}m {TotalTime.Seconds}s";
                }
            }
            // ora sistemo le statistiche DB maintenance
            double estimDbMaintSec = 150;
            var dbTotSec = actDbMaintStats.Sum(x => x.Value);
            var dbNumItem = actDbMaintStats.Count();
            if (dbNumItem > 0)
            {
                estimDbMaintSec = dbTotSec / dbNumItem;
            }
            var TotalTimeDb = TimeSpan.FromSeconds(estimDbMaintSec);
            if (TotalTimeDb.TotalMinutes > 60)
            {
                strDbMaintTimeExp = $"{TotalTimeDb.Hours}h {TotalTimeDb.Minutes}m";
            }
            else
            {
                strDbMaintTimeExp = $"{TotalTimeDb.Minutes}m {TotalTimeDb.Seconds}s";
            }
        }

        #endregion Private Methods
    }
}