using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Components;
using MP.Stats.Data;

namespace MP.Stats.Components
{
    public partial class ChartControlli
    {
        #region Protected Fields

        protected const string EsitoKO = "Esito: Non Passato";

        protected const string EsitoOK = "Esito: OK";

        protected object lineChartOptions = new
        {
            Scales = new
            {
                XAxes = new object[]
                {
                    new {
                            Display = true
                        }
                },
                YAxes = new object[]
                {
                    new {
                            Display = true,
                            ticks= new {
                                suggestedMin = 0
                            }
                    }
                }
            },
            Tooltips = new
            {
                Mode = "nearest",
                Intersect = false
            },
            Hover = new
            {
                Mode = "nearest",
                Intersect = false
            },
            Animation = false,
            AspectRatio = 4.9
        };

        protected object pieChartOptions = new
        {
            Scales = new
            {
                XAxes = new object[]
                {
                    new {
                            Display = false
                        }
                },
                YAxes = new object[]
                {
                    new {
                            Display = false
                    }
                }
            },
            Legend = new
            {
                Display = false
            },
            Tooltips = new
            {
                Mode = "nearest",
                Intersect = false
            },
            Hover = new
            {
                Mode = "nearest",
                Intersect = false
            },
            Animation = false,
            AspectRatio = 1
        };

#if false
        protected PieChart<double> PieVC = new PieChart<double>();
        protected LineChart<double> TimeSerieVC = new LineChart<double>(); 
#endif

        #endregion Protected Fields

        #region Protected Properties

        protected SelectData _currFilter { get; set; } = new SelectData();

        protected List<MP.Data.DatabaseModels.ResControlli> _rawData { get; set; } = new List<MP.Data.DatabaseModels.ResControlli>();

        [Inject]
        protected MessageService MessageService { get; set; }

        protected List<ChartKV> ParetoData { get; set; } = new List<ChartKV>();

        [Inject]
        protected MpStatsService StatService { get; set; }

        protected List<ChartTS> TSData { get; set; } = new List<ChartTS>();

        #endregion Protected Properties

        #region Public Properties

        [Parameter]
        public List<MP.Data.DatabaseModels.ResControlli> RawData
        {
            get => _rawData;
            set
            {
                // salvo valori
                _rawData = value;
                if (value != null)
                {
                    // ricalcolo charting data
                    recalcData();
                    var dataReload = Task.Run(async () =>
                    {
                        await HandleRedraw();
                    });
                }
            }
        }

        #endregion Public Properties

        #region Private Methods

#if false
        private PieChartDataset<double> GetBarChartDataset()
        {
            var answ = new PieChartDataset<double>
            {
                Label = "Numero Controlli",
                Data = ParetoData.Select(x => x.value).ToList(),
                BackgroundColor = getPieColors(0.4f),
                BorderColor = getPieColors(1f),
                HoverBorderWidth = 3
            };
            return answ;
        } 
#endif

        private List<string> GetBarChartLabels()
        {
            var answ = ParetoData.Select(x => x.label).ToList();
            return answ;
        }

#if false
        /// <summary>
        /// Elenco 2 linee x controli KO /KO
        /// </summary>
        /// <returns></returns>
        private LineChartDataset<double> GetLineChartDataset()
        {
            var answ = new LineChartDataset<double>
            {
                Label = "Numero controlli",
                Data = TSData.Select(x => x.Value).ToList(),
                BorderColor = getLineColors(1f),
                Fill = true,
                PointRadius = 2,
                LineTension = 0,
                BorderDash = new List<int> { }
            };
            return answ;
        } 
#endif

        private List<string> GetLineChartLabels()
        {
            var answ = TSData.Select(x => x.TLabel.ToString("ddd dd.MM")).ToList();
            return answ;
        }

        private void recalcData()
        {
            if (RawData != null)
            {
                ParetoData = RawData
                          .GroupBy(p => p.EsitoOk)
                          .Select(y => new ChartKV() { label = y.First().EsitoOk ? EsitoOK : EsitoKO, value = y.Count() })
                           .OrderByDescending(x => x.value)
                          .ToList();

                TSData = RawData
                           .GroupBy(x => x.DataOra.Date)
                           .Select(y => new ChartTS() { TLabel = y.First().DataOra.Date, Value = y.Count() })
                           .OrderBy(x => x.TLabel)
                           .ToList();
            }
        }

        #endregion Private Methods

        #region Protected Methods

        /// <summary>
        /// Genera colori sfondo 33% rosso / arancione / giallo
        /// </summary>
        /// <param name="numRecords"></param>
        /// <returns></returns>
        protected List<string> getLineColors(float alpha)
        {
            List<string> answ = new List<string>();
#if false
            answ.Add(ChartColor.FromRgba(54, 82, 254, alpha)); 
#endif
            return answ;
        }

        /// <summary>
        /// Genera colori sfondo 33% rosso / arancione / giallo
        /// </summary>
        /// <param name="numRecords"></param>
        /// <returns></returns>
        protected List<string> getPieColors(float alpha)
        {
            List<string> answ = new List<string>();
#if false
            foreach (var item in ParetoData)
            {
                if (item.label == EsitoOK)
                {
                    answ.Add(ChartColor.FromRgba(54, 254, 82, alpha));
                }
                else
                {
                    answ.Add(ChartColor.FromRgba(254, 82, 65, alpha));
                }
            } 
#endif
            return answ;
        }

        protected async Task HandleRedraw()
        {
#if false
            if (PieVC != null)
            {
                await PieVC.Clear();
                await PieVC.AddLabelsDatasetsAndUpdate(GetBarChartLabels(), GetBarChartDataset());
            }
            if (TimeSerieVC != null)
            {
                await TimeSerieVC.Clear();
                await TimeSerieVC.AddLabelsDatasetsAndUpdate(GetLineChartLabels(), GetLineChartDataset());
            } 
#endif
        }

        #endregion Protected Methods
    }
}