@inject ISnackbar snackbar

<MudDialog>
    <DialogContent>
        <MudPaper Class="m-2 p-2">
            <MudForm @bind-Errors="@errors">
                <MudTextField T="string"
                    Label="Comments"
                    Required="true"
                    RequiredError="You must provide a comment"
                    @bind-Value="@comments"
                    @bind-Text="@comments"
                    Immediate="true"
                    AutoGrow
                    AutoFocus/>
            </MudForm>
        </MudPaper>
    </DialogContent>
    <DialogActions>
        <MudButton Variant="Variant.Filled"
                   Color="Color.Tertiary"
                   Class="m1-auto"
                   OnClick=SubmitComments>
            @if (processing) {
                <MudProgressCircular Class="m-1" Size="Size.Small" Indeterminate="true" />
                <MudText>Processing</MudText>
            } else {
                <MudText>Ok</MudText>
            }
        </MudButton>
        <MudButton Variant="Variant.Filled"
                   Class="grey text-black m1-auto"
                   OnClick=Cancel>
            Cancel
        </MudButton>
    </DialogActions>
</MudDialog>

@code {
    [CascadingParameter] MudDialogInstance MudDialog { get; set; }

    [Parameter]
    public string comments { get; set; } = "";

    private string[] errors = { };

    private bool processing = false;

    protected override void OnParametersSet() {
        comments = string.Empty;
    }

    private void SubmitComments() {
        processing = true;
        try {
            if (string.IsNullOrWhiteSpace(comments) || comments.Length < 5)
                throw new Exception("Comments must be at least five characters long");

            MudDialog.Close(DialogResult.Ok(comments));
        } catch (Exception ex) {
            snackbar.Add(ex.Message, Severity.Error);
        }
        processing = false;
    }

    private void Cancel() {
        MudDialog.Close(DialogResult.Cancel());
    }
}