@using Sandbox;
@using Sandbox.UI;
@using HC3;

@inherits PanelComponent
@implements Component.INetworkListener

<root>
    @if (Connection.All.Count() <= 1) return;
    <div class="output">
        @foreach (var entry in Entries)
        {
            <div class="chat_entry">
                @if (entry.steamid > 0)
                {
                    <div class="avatar" style="background-image: url( avatar:@entry.steamid )"></div>
                }
                <div class="author">@entry.author</div>
                <div class="message">@entry.message</div>
            </div>
        }
    </div>

    <div class="input">
        <TextEntry @ref="InputBox" onsubmit="@ChatFinished"></TextEntry>
    </div>

</root>

@code
{
    TextEntry InputBox;

    public record Entry( ulong steamid, string author, string message, RealTimeSince timeSinceAdded );
    List<Entry> Entries = new();

    protected override int BuildHash() => System.HashCode.Combine(Connection.All.Count());

    protected override void OnUpdate()
    {
        if (InputBox is null)
            return;

        Panel.AcceptsFocus = false;

        if ( Input.Pressed( "chat" ) )
        {
            InputBox.Focus();
        }

        if ( Entries.RemoveAll( x => x.timeSinceAdded > 20.0f ) > 0 )
        {
            StateHasChanged();
        }

        SetClass( "open", InputBox.HasFocus );
    }

    void ChatFinished()
    {
        var text = InputBox.Text;
        InputBox.Text = "";

        if (string.IsNullOrWhiteSpace(text))
            return;

        AddText( text );
    }

    [ConCmd( "say" )]
    private static void Say( string msg )
    {
        var chat = Game.ActiveScene.GetAll<ChatUI>()
                                 .FirstOrDefault();

        if ( Application.IsDedicatedServer )
        {
            chat.AddSystemText( msg );
        }
        else
        {
            chat.AddText( msg );
        }
    }

    [Rpc.Broadcast]
    public void AddText( string message )
    {
        message = message.Truncate( 300 );

        if (string.IsNullOrWhiteSpace(message))
            return;

        var author = Rpc.Caller.DisplayName;
        var steamid = Rpc.Caller.SteamId;

        Log.Info($"{author}: {message}");

        Entries.Add(new Entry(steamid, author, message, 0.0f));
        StateHasChanged();
    }

    [Rpc.Broadcast] // todo: only from host/owner
    public void AddSystemText(string message)
    {
        message = message.Truncate(300);

        if (string.IsNullOrWhiteSpace(message))
            return;

        Entries.Add(new Entry(0, "ℹ️", message, 0.0f));
        StateHasChanged();
    }


    void Component.INetworkListener.OnConnected( Connection channel )
    {
        if ( Connection.All.Count < 2 )
        {
            return;
        }

        NotificationPanel.Instance.Broadcast( $"{channel.DisplayName} entered the park" );
    }

	void Component.INetworkListener.OnDisconnected( Connection channel )
	{
		if ( IsProxy ) return;

        NotificationPanel.Instance.Broadcast( $"{channel.DisplayName} left the park" );
	}
}