mapo-mono/MP.MONO.UI/Components/ParamPlot.razor.cs

using Microsoft.AspNetCore.Components;
using MP.MONO.Core.DTO;
using MP.MONO.Data;
using Newtonsoft.Json;


namespace MP.MONO.UI.Components
{
    public partial class ParamPlot
    {

        protected List<chartJsData.chartJsTSerie> LevelVal = new List<chartJsData.chartJsTSerie>();

        protected DateTime lastRec = DateTime.Now.AddMinutes(-1);

        protected int sampleSecMin = 1;

        //protected string cssSel(string ParamName)
        //{
        //    string answ = ParamName == SelVal ? "fa-solid fa-chevron-right" : "";
        //    return answ;

        //}

        protected string _selParam { get; set; } = "";

        protected List<string> getLineColors(string alpha)
        {
            List<string> answ = new List<string>();
            answ.Add($"rgba(54, 82, 254, {alpha})");
            return answ;
        }

        protected List<string> getFillColors(string alpha)
        {
            List<string> answ = new List<string>();
            answ.Add($"rgba(108, 164, 254, {alpha})");
            return answ;
        }

        protected List<string> getPointColors(string alpha)
        {
            List<string> answ = new List<string>();
            answ.Add($"rgba(108, 118, 158, {alpha})");
            return answ;
        }

        [Parameter]
        public string SelectedParam
        {
            get
            {
                return _selParam;
            }
            set
            {
                // controllo se è variato
                if (_selParam != value)
                {
                    // salvo
                    _selParam = value;
                    // resetto TimeSerie
                    LevelVal = new List<chartJsData.chartJsTSerie>();
                }
            }
        }

        protected override async Task OnInitializedAsync()
        {
            //await ReloadData();
            await Task.Delay(1);
            MMDataService.parametersPipe.EA_NewMessage += ParametersPipe_EA_NewMessage;
        }
        private int maxRecord = 10;

        private bool showParam = false;
        private void toggleParam()
        {
            showParam = !showParam;
        }

        //private int inputValue = 123;
        private void ParametersPipe_EA_NewMessage(object? sender, EventArgs e)
        {
            DateTime adesso = DateTime.Now;
            if (lastRec.AddSeconds(sampleSecMin) < adesso)
            {
                PubSubEventArgs currArgs = (PubSubEventArgs)e;
                if (!string.IsNullOrEmpty(currArgs.newMessage))
                {
                    try
                    {
                        var ListRecords = JsonConvert.DeserializeObject<List<DisplayDataDTO>>(currArgs.newMessage);
                        // prendo SOLO il dato della TS richiesta
                        if (ListRecords != null)
                        {
                            var newData = ListRecords.Where(x => x.Title == SelectedParam).FirstOrDefault();
                            // lo accodo
                            if (newData != null)
                            {
                                LevelVal.Add(new chartJsData.chartJsTSerie() { x = adesso, y = newData.ValueNum });
                                if (LevelVal.Count > maxRecord)
                                {
                                    LevelVal.RemoveRange(0, LevelVal.Count - maxRecord);
                                }
                            }
                        }
                    }
                    catch
                    { }
                }
                lastRec = adesso;
            }
            InvokeAsync(() =>
            {
                StateHasChanged();
            });
        }
    }
}