Files
Sharepoint-Toolbox/.planning/phases/19-app-registration-removal/19-01-PLAN.md
2026-04-09 14:48:49 +02:00

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Markdown

---
phase: 19-app-registration-removal
plan: 01
type: execute
wave: 1
depends_on: []
files_modified:
- SharepointToolbox/Core/Models/AppRegistrationResult.cs
- SharepointToolbox/Core/Models/TenantProfile.cs
- SharepointToolbox/Services/IAppRegistrationService.cs
- SharepointToolbox/Services/AppRegistrationService.cs
- SharepointToolbox.Tests/Services/AppRegistrationServiceTests.cs
autonomous: true
requirements: [APPREG-02, APPREG-03, APPREG-06]
must_haves:
truths:
- "IsGlobalAdminAsync returns true when user has Global Admin directory role"
- "IsGlobalAdminAsync returns false (not throws) when user lacks role or gets 403"
- "RegisterAsync creates Application + ServicePrincipal + OAuth2PermissionGrants in sequence"
- "RegisterAsync rolls back (deletes Application) when any intermediate step fails"
- "RemoveAsync deletes the Application by appId and clears MSAL session"
- "TenantProfile.AppId is nullable and round-trips through JSON serialization"
- "AppRegistrationResult discriminates Success (with appId), Failure (with message), and Fallback"
artifacts:
- path: "SharepointToolbox/Core/Models/AppRegistrationResult.cs"
provides: "Discriminated result type for registration outcomes"
contains: "class AppRegistrationResult"
- path: "SharepointToolbox/Core/Models/TenantProfile.cs"
provides: "AppId nullable property for storing registered app ID"
contains: "AppId"
- path: "SharepointToolbox/Services/IAppRegistrationService.cs"
provides: "Service interface with IsGlobalAdminAsync, RegisterAsync, RemoveAsync, ClearMsalSessionAsync"
exports: ["IAppRegistrationService"]
- path: "SharepointToolbox/Services/AppRegistrationService.cs"
provides: "Implementation using GraphServiceClient"
contains: "class AppRegistrationService"
- path: "SharepointToolbox.Tests/Services/AppRegistrationServiceTests.cs"
provides: "Unit tests covering admin detection, registration, rollback, removal, session clear"
min_lines: 80
key_links:
- from: "SharepointToolbox/Services/AppRegistrationService.cs"
to: "GraphServiceClient"
via: "constructor injection of GraphClientFactory"
pattern: "GraphClientFactory"
- from: "SharepointToolbox/Services/AppRegistrationService.cs"
to: "MsalClientFactory"
via: "constructor injection for session eviction"
pattern: "MsalClientFactory"
---
<objective>
Create the AppRegistrationService with full Graph API registration/removal logic, the AppRegistrationResult model, and add AppId to TenantProfile. All unit-tested with mocked Graph calls.
Purpose: The service layer is the foundation for all Entra app registration operations. It must be fully testable before any UI is wired.
Output: IAppRegistrationService + implementation + AppRegistrationResult model + TenantProfile.AppId field + unit tests
</objective>
<execution_context>
@C:/Users/dev/.claude/get-shit-done/workflows/execute-plan.md
@C:/Users/dev/.claude/get-shit-done/templates/summary.md
</execution_context>
<context>
@.planning/PROJECT.md
@.planning/ROADMAP.md
@.planning/STATE.md
@.planning/phases/19-app-registration-removal/19-RESEARCH.md
<interfaces>
<!-- Existing code the executor needs -->
From SharepointToolbox/Infrastructure/Auth/GraphClientFactory.cs:
```csharp
public class GraphClientFactory
{
public GraphClientFactory(MsalClientFactory msalFactory) { }
public async Task<GraphServiceClient> CreateClientAsync(string clientId, CancellationToken ct) { }
}
```
From SharepointToolbox/Infrastructure/Auth/MsalClientFactory.cs:
```csharp
public class MsalClientFactory
{
public string CacheDirectory { get; }
public async Task<IPublicClientApplication> GetOrCreateAsync(string clientId) { }
public MsalCacheHelper GetCacheHelper(string clientId) { }
}
```
From SharepointToolbox/Services/ISessionManager.cs:
```csharp
public interface ISessionManager
{
Task<ClientContext> GetOrCreateContextAsync(TenantProfile profile, CancellationToken ct = default);
Task ClearSessionAsync(string tenantUrl);
bool IsAuthenticated(string tenantUrl);
}
```
From SharepointToolbox/Core/Models/TenantProfile.cs:
```csharp
public class TenantProfile
{
public string Name { get; set; } = string.Empty;
public string TenantUrl { get; set; } = string.Empty;
public string ClientId { get; set; } = string.Empty;
public LogoData? ClientLogo { get; set; }
}
```
</interfaces>
</context>
<tasks>
<task type="auto" tdd="true">
<name>Task 1: Models + Interface + Service implementation</name>
<files>
SharepointToolbox/Core/Models/AppRegistrationResult.cs,
SharepointToolbox/Core/Models/TenantProfile.cs,
SharepointToolbox/Services/IAppRegistrationService.cs,
SharepointToolbox/Services/AppRegistrationService.cs
</files>
<behavior>
- AppRegistrationResult.Success("appId123") carries appId, IsSuccess=true
- AppRegistrationResult.Failure("msg") carries message, IsSuccess=false
- AppRegistrationResult.FallbackRequired() signals fallback path, IsSuccess=false, IsFallback=true
- TenantProfile.AppId is nullable string, defaults to null, serializes/deserializes via System.Text.Json
</behavior>
<action>
1. Create `AppRegistrationResult.cs` in `Core/Models/`:
- Static factory methods: `Success(string appId)`, `Failure(string errorMessage)`, `FallbackRequired()`
- Properties: `bool IsSuccess`, `bool IsFallback`, `string? AppId`, `string? ErrorMessage`
- Use a private constructor pattern (not record, for consistency with other models in the project)
2. Update `TenantProfile.cs`:
- Add `public string? AppId { get; set; }` property (nullable, defaults to null)
- Existing properties unchanged
3. Create `IAppRegistrationService.cs` in `Services/`:
```csharp
public interface IAppRegistrationService
{
Task<bool> IsGlobalAdminAsync(string clientId, CancellationToken ct);
Task<AppRegistrationResult> RegisterAsync(string clientId, string tenantDisplayName, CancellationToken ct);
Task RemoveAsync(string clientId, string appId, CancellationToken ct);
Task ClearMsalSessionAsync(string clientId, string tenantUrl);
}
```
4. Create `AppRegistrationService.cs` in `Services/`:
- Constructor takes `GraphClientFactory`, `MsalClientFactory`, `ISessionManager`, `ILogger<AppRegistrationService>`
- `IsGlobalAdminAsync`: calls `graphClient.Me.TransitiveMemberOf.GetAsync()` filtered on `microsoft.graph.directoryRole`, checks for roleTemplateId `62e90394-69f5-4237-9190-012177145e10`. On any exception (including 403), return false and log warning.
- `RegisterAsync`:
a. Create Application object with `DisplayName = "SharePoint Toolbox - {tenantDisplayName}"`, `SignInAudience = "AzureADMyOrg"`, `IsFallbackPublicClient = true`, `PublicClient.RedirectUris = ["https://login.microsoftonline.com/common/oauth2/nativeclient"]`, `RequiredResourceAccess` for Graph (User.Read, User.Read.All, Group.Read.All, Directory.Read.All) and SharePoint (AllSites.FullControl) using the GUIDs from research.
b. Create ServicePrincipal with `AppId = createdApp.AppId`
c. Look up Microsoft Graph resource SP via filter `appId eq '00000003-0000-0000-c000-000000000000'`, get its `Id`
d. Look up SharePoint Online resource SP via filter `appId eq '00000003-0000-0ff1-ce00-000000000000'`, get its `Id`
e. Post `OAuth2PermissionGrant` for Graph scopes (`User.Read User.Read.All Group.Read.All Directory.Read.All`) with `ConsentType = "AllPrincipals"`, `ClientId = sp.Id`, `ResourceId = graphResourceSp.Id`
f. Post `OAuth2PermissionGrant` for SharePoint scopes (`AllSites.FullControl`) same pattern
g. On any exception after Application creation: try `DELETE /applications/{createdApp.Id}` (best-effort rollback, log warning on rollback failure), return `AppRegistrationResult.Failure(ex.Message)`
h. On success: return `AppRegistrationResult.Success(createdApp.AppId!)`
- `RemoveAsync`: calls `graphClient.Applications[$"(appId='{appId}')"].DeleteAsync(cancellationToken: ct)`. Log warning on failure but don't throw.
- `ClearMsalSessionAsync`:
a. Call `_sessionManager.ClearSessionAsync(tenantUrl)`
b. Get PCA via `_msalFactory.GetOrCreateAsync(clientId)`, loop `RemoveAsync` on all accounts
c. Call `_msalFactory.GetCacheHelper(clientId).UnregisterCache(pca.UserTokenCache)`
Use `private static List<RequiredResourceAccess> BuildRequiredResourceAccess()` as a helper. Use GUIDs from research doc (Graph permissions are HIGH confidence). For SharePoint AllSites.FullControl, use GUID `56680e0d-d2a3-4ae1-80d8-3c4a5c70c4a6` from research (LOW confidence — add a comment noting it should be verified against live tenant).
</action>
<verify>
<automated>dotnet build SharepointToolbox/SharepointToolbox.csproj --no-restore 2>&1 | tail -5</automated>
</verify>
<done>All 4 files exist, solution builds clean, AppRegistrationResult has 3 factory methods, TenantProfile has AppId, IAppRegistrationService has 4 methods, AppRegistrationService implements all 4 with rollback pattern</done>
</task>
<task type="auto" tdd="true">
<name>Task 2: Unit tests for AppRegistrationService</name>
<files>SharepointToolbox.Tests/Services/AppRegistrationServiceTests.cs</files>
<behavior>
- IsGlobalAdminAsync returns true when transitiveMemberOf contains DirectoryRole with Global Admin templateId
- IsGlobalAdminAsync returns false when no matching role
- IsGlobalAdminAsync returns false (not throws) on ServiceException/403
- RegisterAsync returns Success with appId on full happy path
- RegisterAsync calls DELETE on Application when ServicePrincipal creation fails (rollback)
- RegisterAsync calls DELETE on Application when OAuth2PermissionGrant fails (rollback)
- RemoveAsync calls DELETE on Application by appId
- ClearMsalSessionAsync calls ClearSessionAsync + removes all MSAL accounts
- AppRegistrationResult.Success carries appId, .Failure carries message, .FallbackRequired sets IsFallback
- TenantProfile.AppId round-trips through JSON (null and non-null)
</behavior>
<action>
Create `SharepointToolbox.Tests/Services/AppRegistrationServiceTests.cs` with xUnit tests. Since `GraphServiceClient` is hard to mock directly (sealed/extension methods), test strategy:
1. **AppRegistrationResult model tests** (pure logic, no mocks):
- `Success_CarriesAppId`: verify IsSuccess=true, AppId set
- `Failure_CarriesMessage`: verify IsSuccess=false, ErrorMessage set
- `FallbackRequired_SetsFallback`: verify IsFallback=true
2. **TenantProfile.AppId tests**:
- `AppId_DefaultsToNull`
- `AppId_RoundTrips_ViaJson`: serialize+deserialize with System.Text.Json, verify AppId preserved
- `AppId_Null_RoundTrips_ViaJson`: verify null survives serialization
3. **AppRegistrationService tests** — For methods that call GraphServiceClient, use the project's existing pattern: if the project uses Moq or NSubstitute (check test csproj), mock `GraphClientFactory` to return a mock `GraphServiceClient`. If mocking Graph SDK is too complex, test the logic by:
- Extracting `BuildRequiredResourceAccess()` as internal and testing the scope GUIDs/structure directly
- Testing that the service constructor accepts the right dependencies
- For integration-like behavior, mark tests with `[Trait("Category","Integration")]` and skip in CI
Check the test project's existing packages first (`dotnet list SharepointToolbox.Tests package`) to see if Moq/NSubstitute is available. Use whichever mocking library the project already uses.
All tests decorated with `[Trait("Category", "Unit")]`.
</action>
<verify>
<automated>dotnet test SharepointToolbox.Tests --filter "FullyQualifiedName~AppRegistrationServiceTests" --no-restore --verbosity normal 2>&1 | tail -20</automated>
</verify>
<done>All unit tests pass. Coverage: AppRegistrationResult 3 factory methods tested, TenantProfile.AppId serialization tested, service constructor/dependency tests pass, BuildRequiredResourceAccess structure verified</done>
</task>
</tasks>
<verification>
1. `dotnet build` — full solution compiles
2. `dotnet test SharepointToolbox.Tests --filter "FullyQualifiedName~AppRegistrationServiceTests"` — all tests green
3. TenantProfile.AppId exists as nullable string
4. IAppRegistrationService has 4 methods: IsGlobalAdminAsync, RegisterAsync, RemoveAsync, ClearMsalSessionAsync
</verification>
<success_criteria>
- AppRegistrationService implements atomic registration with rollback
- IsGlobalAdminAsync uses transitiveMemberOf (not memberOf) for nested role coverage
- All unit tests pass
- Solution builds clean with no warnings in new files
</success_criteria>
<output>
After completion, create `.planning/phases/19-app-registration-removal/19-01-SUMMARY.md`
</output>