Sharepoint-Toolbox/.planning/phases/07-user-access-audit/07-03-SUMMARY.md

phase, plan, subsystem, tags, dependency_graph, tech_stack, key_files, decisions, metrics

phase	plan	subsystem	tags	dependency_graph	tech_stack	key_files	decisions	metrics
07-user-access-audit	03	graph-user-search-service	graph-api user-search people-picker services	requires provides affects 07-01 GraphUserSearchService 07-04 07-05	added patterns Microsoft Graph SDK OData filter startsWith ConsistencyLevel=eventual	created modified SharepointToolbox/Services/GraphUserSearchService.cs	Minimum 2-character query guard prevents overly broad Graph API requests Single-quote escaping in OData filter prevents injection (replace ' with '') ConsistencyLevel=eventual + Count=true both required for startsWith on directory objects	duration_minutes completed_date tasks_completed files_created files_modified 2 2026-04-07 1 1 0

Phase 7 Plan 03: GraphUserSearchService Implementation Summary

One-liner: GraphUserSearchService implements IGraphUserSearchService using GraphClientFactory, querying Graph /users with startsWith OData filter on displayName, mail, and UPN for people-picker autocomplete.

What Was Built

GraphUserSearchService.cs — Concrete implementation of IGraphUserSearchService. Queries the Microsoft Graph /users endpoint using OData startsWith filter across three fields (displayName, mail, userPrincipalName). Sets the required ConsistencyLevel: eventual header and $count=true parameter mandatory for advanced directory filters. Returns up to maxResults (default 10) GraphUserResult records ordered by displayName. Guards against queries shorter than 2 characters to prevent broad, wasteful API calls.

Tasks

#	Task	Status	Commit
1	Implement GraphUserSearchService	Done	026b829

Decisions Made

1. 2-character minimum guard — Queries of 0 or 1 character return an empty list immediately without calling Graph. This prevents overly broad results and unnecessary API calls while the user is still typing.

2. OData single-quote escaping — Query strings replace ' with '' before embedding in the OData filter. This prevents OData injection if user input contains apostrophes (e.g., "O'Brien").

3. ConsistencyLevel=eventual + Count=true — Microsoft Graph requires both headers when using startsWith on directory objects. Omitting either causes a 400 Bad Request. Both are set together in the request configuration.

Deviations from Plan

None — plan executed exactly as written.

Verification

• dotnet build SharepointToolbox/SharepointToolbox.csproj — 0 errors, 0 warnings
• GraphUserSearchService.cs implements IGraphUserSearchService confirmed
• Uses GraphClientFactory.CreateClientAsync for auth (not raw HTTP)
• Empty/short query guard (length < 2) returns Array.Empty()
• Filter covers displayName, mail, and userPrincipalName with startsWith

Self-Check: PASSED

Files confirmed present:

• FOUND: SharepointToolbox/Services/GraphUserSearchService.cs

Commits confirmed:

• FOUND: 026b829