using Microsoft.AspNetCore.Components;
using MP.MONO.Data.DTO;
using MP.MONO.UI.Data;

namespace MP.MONO.UI.Components
{
    public partial class ListFreqAlarms
    {
        #region Public Properties

        [Parameter]
        public selectChartParams selFilter { get; set; } = null!;

        [Parameter]
        public EventCallback<int> TotRecordChanged { get; set; }

        #endregion Public Properties

        #region Protected Properties

        protected int currPage
        {
            get => selFilter.CurrPage;
        }

        protected DateTime dtEnd
        {
            get => selFilter.dtMax;
        }

        protected DateTime dtStart
        {
            get => selFilter.dtMin;
        }

        protected List<AlarmFreqDTO>? ListRecordsFreq { get; set; } = null;
        protected List<AlarmFreqDTO>? SearchRecordsFreq { get; set; } = null;
        protected int totalVar { get; set; } = 0;

        #endregion Protected Properties

        #region Protected Methods

        protected override async Task OnInitializedAsync()
        {
            await Task.Delay(1);
        }

        protected override async Task OnParametersSetAsync()
        {
            await ReloadData();
        }

        #endregion Protected Methods

        #region Private Fields

        private double sogliaGreen = 0;

        private double sogliaRed = 1;

        #endregion Private Fields

        #region Private Properties

        private int _totalCount { get; set; } = 0;

        private int numRecord
        {
            get => selFilter.NumRecord;
        }

        private int totalCount
        {
            get => _totalCount;
            set
            {
                if (_totalCount != value)
                {
                    _totalCount = value;
                    TotRecordChanged.InvokeAsync(value);
                }
            }
        }

        #endregion Private Properties

        #region Private Methods

        private void calcolaSoglieFreq()
        {
            int numRecord = totalCount;
            if (SearchRecordsFreq != null)
            {
                var firstRecord = SearchRecordsFreq.Skip((int)(numRecord * 0.2)).FirstOrDefault();
                var lastRecord = SearchRecordsFreq.Skip((int)(numRecord * 0.8)).FirstOrDefault();
                if (firstRecord != null)
                {
                    sogliaGreen = (double)firstRecord.EventCount / totalVar;
                }
                if (lastRecord != null)
                {
                    sogliaRed = (double)lastRecord.EventCount / totalVar;
                }
            }
        }

        private string calcPercFreq(double numEvent)
        {
            string ans = $"{numEvent / totalVar:P2}";

            return ans;
        }

        private async Task ReloadData()
        {
            SearchRecordsFreq = CurrentDataService.dbController.AlarmRecGetParetoFreq(1, dtStart, dtEnd);
            ListRecordsFreq = SearchRecordsFreq.Skip(numRecord * (currPage - 1)).Take(numRecord).ToList();
            totalCount = SearchRecordsFreq.Count;
            totalVar = SearchRecordsFreq.Sum(x => x.EventCount);
            calcolaSoglieFreq();
            await Task.Delay(1);
        }

        private string styleColourPBarFreq(double eventFreq)
        {
            string ans = "";
            var source = ListRecordsFreq;

            calcolaSoglieFreq();

            if (eventFreq >= sogliaGreen)
            {
                ans = "bg-danger";
            }
            else if (eventFreq <= sogliaRed)
            {
                ans = "bg-success";
            }
            else
            {
                ans = "bg-warning";
            }

            return ans;
        }

        private string valFreq(double eventCount)
        {
            string ans = "";
            if (SearchRecordsFreq != null)
            {
                int max = SearchRecordsFreq.Max(a => a.EventCount);
                double divisione = eventCount / max;
                int percentage = (int)(divisione * 100);
                ans = $"width: {percentage}%";
            }
            return ans;
        }

        #endregion Private Methods
    }
}