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

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Components;
using System.Net.Http;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.AspNetCore.Components.Forms;
using Microsoft.AspNetCore.Components.Routing;
using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.Web.Virtualization;
using Microsoft.JSInterop;
using MP.MONO.Core.DTO;
using MP.MONO.Data;
using MP.MONO.UI;
using MP.MONO.UI.Shared;
using MP.MONO.UI.Components;
using MP.MONO.UI.Data;
using Newtonsoft.Json;

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

        [Parameter]
        public EventCallback<int> messageReceived { get; set; }
        private List<DisplayDataDTO>? ListRecords { get; set; } = new List<DisplayDataDTO>();
        protected override async Task OnInitializedAsync()
        {
            await ReloadData();
            MMDataService.alarmPipe.EA_NewMessage += AlarmPipe_EA_NewMessage;
        }

        private void AlarmPipe_EA_NewMessage(object? sender, EventArgs e)
        {
            PubSubEventArgs currArgs = (PubSubEventArgs)e;
            // conversione on-the-fly List<string> --> allarmi
            if (!string.IsNullOrEmpty(currArgs.newMessage))
            {
                try
                {
                    var alarmList = JsonConvert.DeserializeObject<List<string>>(currArgs.newMessage);
                    if (alarmList != null)
                    {
                        ListRecords = alarmList.Select(x => new DisplayDataDTO()
                        {
                            IsNumeric = false,
                            Title = $"{DateTime.Now:yyyy-MM-dd HH:mm:ss}",
                            Value = x,
                            Order = ListRecords == null ? 0 : ListRecords.Count
                        }).ToList();
                        messageReceived.InvokeAsync(alarmList.Count);
                    }
                }
                catch
                { }
            }
            InvokeAsync(() =>
            {
                StateHasChanged();
            });
        }

        protected async Task ReloadData()
        {
            var alarmList = await MMDataService.getAlarms();
            ListRecords = alarmList.Select(x => new DisplayDataDTO()
            {
                IsNumeric = false,
                Title = $"{DateTime.Now:yyyy-MM-dd HH:mm:ss}",
                Value = x,
                Order = ListRecords == null ? 0 : ListRecords.Count
            }).ToList();
        }
    }
}