Zonit.Extensions.Organizations 10.0.0-preview.15

Zonit.Extensions.Organizations

Workspace (organization / tenant) context for Zonit applications: which organization the current user is working in, and which ones they can switch into. Framework-agnostic — no HttpContext, no middleware, no Blazor types. The ASP.NET Core middleware and the prerender → circuit bridge ship in Zonit.Extensions.Website.

dotnet add package Zonit.Extensions.Organizations

What you get

• IOrganizationSource — the one contract you implement: load the current workspace, list switchable organizations, perform a switch. Everything else is built on it.
• IWorkspaceManager — per-scope state machine: Initialize(StateModel), InitializeAsync(ct), SwitchOrganizationAsync(id, ct), plus Workspace / Organizations / State and OnChange.
• IWorkspaceProvider — read surface for UI and domain code: the active organization as the Organization value object, Organization.Empty when none is selected.

AddOrganizationsExtension() registers exactly three scoped services — IWorkspaceManager, IWorkspaceProvider and a NullOrganizationSource safety net — and nothing else.

Setup

In a Website host, register only your source: AddWebsite() already calls AddOrganizationsExtension() and UseWebsite<TApp>() installs the middleware.

builder.Services.AddScoped<IOrganizationSource, AcmeOrganizationSource>();
builder.Services.AddWebsite();

Anywhere else (console, worker, tests) wire it yourself and drive the manager once per scope:

services.AddScoped<IOrganizationSource, AcmeOrganizationSource>();
services.AddOrganizationsExtension();

await using var scope = provider.CreateAsyncScope();
var manager = scope.ServiceProvider.GetRequiredService<IWorkspaceManager>();
await manager.InitializeAsync(cancellationToken);

Use AddScoped, not TryAddScoped. The null source is registered with TryAddScoped; a TryAddScoped of your own after it is a silent no-op and you keep an empty workspace forever.

Implementing the source

public interface IOrganizationSource
{
    Task<WorkspaceModel> InitializeAsync(CancellationToken cancellationToken = default);
    Task<IReadOnlyCollection<OrganizationModel>?> GetOrganizationsAsync(CancellationToken cancellationToken = default);
    Task<WorkspaceModel?> SwitchOrganizationAsync(Guid organizationId, CancellationToken cancellationToken = default);
}

Three things the compiler will not tell you:

1. InitializeAsync and GetOrganizationsAsync are started concurrently on the same scoped instance (Task.WhenAll). Inject IDbContextFactory<T>, not a shared DbContext — EF Core forbids overlapping operations on one context.
2. null from SwitchOrganizationAsync means denied — this method is the authorization check. GetOrganizationsAsync returning null means "unknown"; return [] for "member of nothing".
3. OrganizationModel.Id must be non-empty and Name non-blank and ≤ 60 graphemes, or the projection to the Organization value object degrades silently (empty organization / empty or truncated title). It never throws.

In a Website host the whole snapshot — the active workspace and every organization you return — is serialized into the prerendered HTML, so do not fill invoice fields (Email, TaxIdentification, address) unless the page needs them.

Reading the workspace

@inject IWorkspaceProvider Workspace

@if (Workspace.Organization.HasValue)
{
    <p>@Workspace.Organization.Name — @Workspace.Organization.Id</p>
}

Organization is a readonly struct: test HasValue, never != null. Pages deriving from PageBase / PageViewBase<T> already expose Workspace as a protected property.

Switching organization

if (!await manager.SwitchOrganizationAsync(organizationId, cancellationToken))
{
    // Denied — the previously selected organization is untouched and no OnChange fired.
}

A granted switch replaces the workspace, back-fills the organization list if the scope had none, and raises OnChange, which IWorkspaceProvider and ExtensionsBase-derived components observe.

Authorization is elsewhere

WorkspaceModel.Permissions / Roles are transported but never read by the framework. Authorization runs off the Identity produced by Zonit.Extensions.Auth ([RequirePermission], IAuthorizationService, <AuthorizeView>). Pure tenancy lives here.

Migration to 10.0.0-preview.10

Removed public types — there is no drop-in replacement; the framework only ever needs IOrganizationSource:

Behaviour changes:

• IWorkspaceManager.SwitchOrganizationAsync returns Task<bool> instead of Task. Source-compatible for a plain await, binary-breaking (recompile), source-breaking for anyone implementing the interface.
• A denied switch is now a no-op. It used to clear the workspace, logging the user out of an organization they did have access to; it now returns false and leaves the selection alone.
• A switch on a scope that was never initialized is no longer ignored — the source is called, so SwitchOrganizationAsync may arrive without a preceding InitializeAsync on the same scope.
• Malformed source data no longer throws ArgumentException from IWorkspaceProvider.Organization: Guid.Empty → Organization.Empty, blank name → Title.Empty, over-long name → truncated at 60 graphemes. Read IWorkspaceManager.Workspace?.Organization for the verbatim values.

Earlier versions also exposed IsPermission(string) / IsRole(string) with hard-coded "Developer" / "All" bypasses. That is gone; see Zonit.Extensions.Auth.

License

MIT.