@using Sandbox;
@using Sandbox.UI;
@inherits PanelComponent

<root class=@(Visible ? "visible" : "")>
    <label class="message">@OutputText</label>
    <label class="name">@NPCName</label>
    <label class="background"></label>
</root>

@code {
    public string Message { get; set; } = "";

    private bool Visible => TimeSinceDisplayed < 4;
    private RealTimeSince TimeSinceDisplayed = 999;

    public string OutputText { get; set; }
    public float Delay { get; set; } = .1f;
    public string NPCName { get; set; } = "Ben";
    public string Voice { get; set; } = "beep1";

    protected override void OnEnabled()
    {
        base.OnEnabled();
        TimeSinceDisplayed = 999;
    }

    public static bool IsTalking()
    {
        return true;
    }

    private async Task RevealTextAsync(string message)
    {
        Random rand = new Random();
        foreach (char c in message)
        {
            IsTalking();
            OutputText += c;
            TimeSinceDisplayed = 0f;
            await Task.DelaySeconds((float)GetRandomNumber(0.05f, 0.2f));
            var snd = Sound.Play(Voice);
            snd.Pitch = (float)GetRandomNumber(0.9f, 1.1f);
            snd.Volume = 0.25f;
        }
    }

    static Random random = new Random();
    public double GetRandomNumber(double minimum, double maximum)
    {
        return random.NextDouble() * (maximum - minimum) + minimum;
    }

    public void DisplayMessage(string message)
    {
        Message = message;
        OutputText = null;
    }

    protected override void OnUpdate()
    {
        base.OnUpdate();
        if (OutputText == Message)
        {
            return;
        }

        if (OutputText == null)
        {
            RevealTextAsync(Message);
        }
        Message = OutputText;
    }

    protected override int BuildHash()
    {
        return HashCode.Combine(OutputText, Visible ? 1 : 0);
    }

}