@page "/hub"

<h3>Hub</h3>

@using System.Collections
@using Microsoft.AspNetCore.SignalR.Client
@using Squirrowse.Core.Models
@using Squirrowse.Core.Services
@inject IConnectionManager _connection;

@*<button id="LoadData"class="btn btn-success btn-sm" @onclick="@(() => loadData())">dupa123 </button>*@

<div class="card border-primary mb-3" style="max-width: 20rem;">
    @if (agents != null && agents.Any())
{
        @foreach (var agent in agents)
        {
            <div class="card-body">
                <div>
                    <h3 class="badge-primary">
                        @agent.AgentName ->  @agent.UserType.ToString()
                    </h3>
                    <div style="padding-top:10px">
                        <button id="ViewCast" disabled="@(IsViewingCastOf(agent.AgentName))" class="btn btn-success btn-sm" @onclick="@(() => OnViewCastClicked(agent.ConnectionId))">
                            View cast
                        </button>

                        <button id="StopViewCast" disabled="@(!IsViewingCastOf(agent.AgentName))" class="btn btn-warning btn-sm" @onclick="@(() => OnStopViewCastClicked(agent.ConnectionId))">
                            Stop cast
                        </button>
                    </div>
                </div>
            </div>
        }
    }
    else
    {
    <div class="card-body">
        <h3 class="card-header badge-warning">No Cams</h3>
    </div>
    }
</div>

<div class="border">
    <img id='screenImage' src="@imageSource" />
</div>
@code{

    private List<User> agents=new List<User>();

    HubConnection connection;
    string imageSource = null;
    string CurrentViewCastAgent = null;

    protected override async Task OnInitializedAsync()
    {
        await _connection.InitConnection(ConnectionType.Server);
        connection = await _connection.GetConnection();

        connection.On<IAsyncEnumerable<byte[]>>("RecData", OnStreamDataReceived);

        await foreach (var user in connection.StreamAsync<User>("GetListOfTypeUserAsync", ConnectionType.Client).ConfigureAwait(false))
        {
            agents.Add(user);
            this.StateHasChanged();
        }
     
    }
 

    bool IsViewingCastOf(string agentName)
    {
        return agentName == CurrentViewCastAgent;
    }

    async Task OnStreamDataReceived(IAsyncEnumerable<byte[]> streamData)
    {
        await foreach (var t in streamData)
        {
            var base64 = Convert.ToBase64String(t);
            imageSource = String.Format("data:image/jpg;base64,{0}", base64);
            StateHasChanged();
        }

    }

    private async Task OnViewCastClicked(string agentName)
    {
        CurrentViewCastAgent = agentName;
        await connection.InvokeAsync("Startstream", agentName);
        StateHasChanged();
    }

    private async Task OnStopViewCastClicked(string agentName)
    {
        CurrentViewCastAgent = null;
        await connection.InvokeAsync("Stopstream", agentName);
        imageSource = null;
        StateHasChanged();
    }

}