@inject ServerService ServerService

<AntDesign.InputNumber Value="Value" ValueChanged="(val) => ValueChanged.InvokeAsync(val)" TValue="int" OnChange="OnPortNumberChanged" Min="0" Max="65535"/>

@code {
    [Parameter] public Guid ServerId { get; set; }
    [Parameter] public int Value { get; set; }
    [Parameter] public EventCallback<int> ValueChanged { get; set; }
    [Parameter] public bool PortInUse { get; set; }
    [Parameter] public EventCallback<bool> PortInUseChanged { get; set; }

    protected override async Task OnInitializedAsync()
    {
        await OnPortNumberChanged(Value);
    }

    async Task OnPortNumberChanged(int value)
    {
        if (value > 0)
        {
            PortInUse = await ServerService.ExistsAsync(s => s.Port == value && s.Id != ServerId);

            if (PortInUseChanged.HasDelegate)
                await PortInUseChanged.InvokeAsync(PortInUse);
        }
    }
}