Remotely/Server/Components/Devices/ChatFrame.razor.cs

using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using Remotely.Server.Hubs;
using Remotely.Server.Services;
using Remotely.Shared.Enums;
using Remotely.Shared.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Remotely.Server.Components.Devices;

public partial class ChatFrame : AuthComponentBase, IDisposable
{

    [Inject]
    private IClientAppState AppState { get; init; } = null!;

    [Inject]
    private ICircuitConnection CircuitConnection { get; init; } = null!;

    public void Dispose()
    {
        AppState.PropertyChanged -= AppState_PropertyChanged;
        CircuitConnection.MessageReceived -= CircuitConnection_MessageReceived;
        GC.SuppressFinalize(this);
    }

    protected override async Task OnInitializedAsync()
    {
        await base.OnInitializedAsync();
        AppState.PropertyChanged += AppState_PropertyChanged;
        CircuitConnection.MessageReceived += CircuitConnection_MessageReceived;
    }

    private void CircuitConnection_MessageReceived(object? sender, Models.CircuitEvent e)
    {
        if (e.EventName == Models.CircuitEventName.ChatReceived)
        {
            var deviceId = (string)e.Params[0];

            if (!AppState.DevicesFrameChatSessions.Exists(x => x.DeviceId == deviceId))
            {
                var deviceName = (string)e.Params[1];
                var message = (string)e.Params[2];
                var disconnected = (bool)e.Params[3];

                if (disconnected)
                {
                    return;
                }

                var newChat = new ChatSession()
                {
                    DeviceId = deviceId,
                    DeviceName = deviceName,
                    IsExpanded = true
                };

                newChat.ChatHistory.Add(new ChatHistoryItem()
                {
                    Message = message,
                    Origin = ChatHistoryItemOrigin.Device
                });

                AppState.DevicesFrameChatSessions.Add(newChat);

                InvokeAsync(StateHasChanged);
            }
        }
    }

    private void AppState_PropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
    {
        if (e.PropertyName == nameof(AppState.DevicesFrameChatSessions))
        {
            InvokeAsync(StateHasChanged);
        }
    }
}