ErsatzTV/ErsatzTV/Shared/RemoteMediaSourceEditor.razor

@implements IDisposable
@inject NavigationManager NavigationManager
@inject ISnackbar Snackbar
@inject ILogger<RemoteMediaSourceEditor> Logger

<MudContainer MaxWidth="MaxWidth.ExtraLarge" Class="pt-8">
    <MudText Typo="Typo.h4" Class="mb-4">@Name Media Source</MudText>
    <div style="max-width: 400px;">
        <EditForm EditContext="_editContext" OnSubmit="@HandleSubmitAsync">
            <FluentValidationValidator/>
            <MudCard>
                <MudCardContent>
                    <MudTextField Label="Address" @bind-Value="_model.Address" For="@(() => _model.Address)" Placeholder="http://192.168.1.100:8096"/>
                    <MudTextField Label="Api Key" @bind-Value="_model.ApiKey" For="@(() => _model.ApiKey)"/>
                </MudCardContent>
                <MudCardActions>
                    <MudButton ButtonType="ButtonType.Submit" Variant="Variant.Filled" Color="Color.Primary" Class="ml-auto">
                        Save Changes
                    </MudButton>
                </MudCardActions>
            </MudCard>
        </EditForm>
    </div>
</MudContainer>

@code {
    private CancellationTokenSource _cts;

    [Parameter]
    public string Name { get; set; }

    [Parameter]
    public Func<RemoteMediaSourceEditViewModel, CancellationToken, Task<Unit>> LoadSecrets { get; set; }

    [Parameter]
    public Func<RemoteMediaSourceEditViewModel, CancellationToken, Task<Either<BaseError, Unit>>> SaveSecrets { get; set; }

    private readonly RemoteMediaSourceEditViewModel _model = new();
    private EditContext _editContext;
    private ValidationMessageStore _messageStore;

    public void Dispose()
    {
        _cts?.Cancel();
        _cts?.Dispose();
    }

    protected override async Task OnParametersSetAsync()
    {
        _cts?.Cancel();
        _cts?.Dispose();
        _cts = new CancellationTokenSource();
        var token = _cts.Token;

        try
        {
            await LoadSecrets(_model, token);
        }
        catch (OperationCanceledException)
        {
            // do nothing
        }
    }

    protected override void OnInitialized()
    {
        _editContext = new EditContext(_model);
        _messageStore = new ValidationMessageStore(_editContext);
    }

    private async Task HandleSubmitAsync()
    {
        _messageStore.Clear();
        if (_editContext.Validate())
        {
            Either<BaseError, Unit> result = await SaveSecrets(_model, _cts.Token);
            result.Match(
                _ => NavigationManager.NavigateTo($"media/sources/{Name.ToLowerInvariant()}"),
                error =>
                {
                    Snackbar.Add(error.Value, Severity.Error);
                    Logger.LogError("Error saving {MediaSource} secrets: {Error}", Name, error.Value);
                });
        }
    }

}