oliverbooth.dev/OliverBooth/Pages/Components/MarkdownEditor.razor

@using System.Text.Json
@using OliverBooth.Common.Data.Blog
@using OliverBooth.Common.Services
@implements IDisposable
@inject IBlogPostService BlogPostService
@inject IJSRuntime JsRuntime

@code {
    private DotNetObjectReference<MarkdownEditor>? _dotNetHelper;

    [JSInvokable]
    public string GetEditorObject(Guid id)
    {
        if (!BlogPostService.TryGetPost(id, out IBlogPost? post))
        {
            return JsonSerializer.Serialize(new { blocks = Array.Empty<object>() });
        }

        return BlogPostService.GetBlogPostEditorObject(post);
    }

    [JSInvokable]
    public void Save(Guid id, string content)
    {
        if (!BlogPostService.TryGetPost(id, out IBlogPost? post))
        {
            return;
        }

        post.Body = content;
        BlogPostService.UpdatePost(post);
    }

    public void Dispose()
    {
        _dotNetHelper?.Dispose();
    }

    /// <inheritdoc />
    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            _dotNetHelper = DotNetObjectReference.Create(this);
            await JsRuntime.InvokeVoidAsync("Interop.setDotNetHelper", _dotNetHelper);
        }
    }

}