---
phase: 11-html-export-branding
plan: 02
subsystem: export
tags: [html-export, branding, csharp, tdd, dotnet]

# Dependency graph
requires:
  - phase: 11-01
    provides: ReportBranding record and BrandingHtmlHelper.BuildBrandingHeader static method
provides:
  - HtmlExportService with optional ReportBranding? branding parameter on BuildHtml and WriteAsync
  - SearchHtmlExportService with optional ReportBranding? branding parameter
  - StorageHtmlExportService with optional ReportBranding? branding parameter (both overloads)
  - DuplicatesHtmlExportService with optional ReportBranding? branding parameter
  - UserAccessHtmlExportService with optional ReportBranding? branding parameter
  - 7 new branding tests across all 5 export test files
affects:
  - 11-03 (ViewModels assemble ReportBranding and pass to export services)

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "Optional nullable parameter after CancellationToken ct in WriteAsync for backward compat"
    - "Raw string literal split at body/h1 boundary to inject branding header between them"
    - "sb.Append (not AppendLine) for branding header — BrandingHtmlHelper already appends newlines"

key-files:
  created: []
  modified:
    - SharepointToolbox/Services/Export/HtmlExportService.cs
    - SharepointToolbox/Services/Export/SearchHtmlExportService.cs
    - SharepointToolbox/Services/Export/StorageHtmlExportService.cs
    - SharepointToolbox/Services/Export/DuplicatesHtmlExportService.cs
    - SharepointToolbox/Services/Export/UserAccessHtmlExportService.cs
    - SharepointToolbox.Tests/Services/Export/HtmlExportServiceTests.cs
    - SharepointToolbox.Tests/Services/Export/SearchExportServiceTests.cs
    - SharepointToolbox.Tests/Services/Export/StorageHtmlExportServiceTests.cs
    - SharepointToolbox.Tests/Services/Export/DuplicatesHtmlExportServiceTests.cs
    - SharepointToolbox.Tests/Services/Export/UserAccessHtmlExportServiceTests.cs

key-decisions:
  - "branding parameter placed AFTER CancellationToken ct in WriteAsync signatures — existing positional callers unaffected"
  - "Raw string literals in SearchHtmlExportService, StorageHtmlExportService, DuplicatesHtmlExportService split at body/h1 boundary for injection"
  - "MakeBranding helper added locally to each test class rather than a shared base class — test files stay self-contained"

# Metrics
duration: 4min
completed: 2026-04-08
---

# Phase 11 Plan 02: HTML Export Branding Injection Summary

**Optional ReportBranding parameter wired into all 5 HTML export services; branding header injected between body and h1 via BrandingHtmlHelper; 7 new tests confirm injection and null-safety**

## Performance

- **Duration:** ~4 min
- **Started:** 2026-04-08T12:41:44Z
- **Completed:** 2026-04-08T12:46:00Z
- **Tasks:** 2 (Task 1: implementation, Task 2: TDD tests)
- **Files modified:** 10

## Accomplishments

- Added `ReportBranding? branding = null` as last parameter to `BuildHtml` on all 5 export services
- Added `ReportBranding? branding = null` after `CancellationToken ct` on all `WriteAsync` overloads (9 overloads total)
- Inserted `sb.Append(BrandingHtmlHelper.BuildBrandingHeader(branding));` between `<body>` and `<h1>` in every exporter
- Split raw string literals in 3 services (SearchHtml, StorageHtml, Duplicates) at the body/h1 boundary to enable injection
- StorageHtmlExportService `_togIdx` reset logic left untouched (per plan pitfall guidance)
- HtmlExportService both overloads updated (PermissionEntry and SimplifiedPermissionEntry)
- StorageHtmlExportService both overloads updated (nodes-only and nodes+fileTypeMetrics)
- Added `MakeBranding` helper to all 5 test classes; wrote 7 new tests (3 in HtmlExportServiceTests, 1 each in the other 4)
- All 45 export tests pass; full suite: 247 passed / 0 failed / 26 skipped (skips are pre-existing integration tests)

## Task Commits

Each task was committed atomically:

1. **Task 1: Add branding parameter to all 5 HTML export services** - `2233fb8` (feat)
2. **Task 2: Extend export tests to verify branding injection** - `d8b6616` (feat)

## Files Created/Modified

- `SharepointToolbox/Services/Export/HtmlExportService.cs` - branding param + injection (2 BuildHtml, 2 WriteAsync)
- `SharepointToolbox/Services/Export/SearchHtmlExportService.cs` - branding param + injection via raw string split
- `SharepointToolbox/Services/Export/StorageHtmlExportService.cs` - branding param + injection (2 BuildHtml, 2 WriteAsync)
- `SharepointToolbox/Services/Export/DuplicatesHtmlExportService.cs` - branding param + injection via raw string split
- `SharepointToolbox/Services/Export/UserAccessHtmlExportService.cs` - branding param + injection
- `SharepointToolbox.Tests/Services/Export/HtmlExportServiceTests.cs` - 3 new branding tests
- `SharepointToolbox.Tests/Services/Export/SearchExportServiceTests.cs` - 1 new branding test
- `SharepointToolbox.Tests/Services/Export/StorageHtmlExportServiceTests.cs` - 1 new branding test
- `SharepointToolbox.Tests/Services/Export/DuplicatesHtmlExportServiceTests.cs` - 1 new branding test
- `SharepointToolbox.Tests/Services/Export/UserAccessHtmlExportServiceTests.cs` - 1 new branding test

## Decisions Made

- Placed `branding` AFTER `CancellationToken ct` in WriteAsync — avoids breaking any existing positional callers that pass ct by position
- Used `sb.Append` (not `sb.AppendLine`) when inserting branding header — BrandingHtmlHelper already ends its output with a newline, so no double blank line
- Raw string literals split at body/h1 boundary by closing the first literal after `<body>` then re-opening for `<h1>` — avoids string concatenation or interpolation awkwardness inside raw string blocks

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None.

## User Setup Required

None.

## Next Phase Readiness

- All 5 HTML export services now accept `ReportBranding? branding = null` — Plan 11-03 ViewModels can assemble `ReportBranding` from `IBrandingService` and `TenantProfile` and pass it to any of these services
- All existing callers compile unchanged (zero-regression confirmed by full test suite)
- Build passes with 0 warnings

---
*Phase: 11-html-export-branding*
*Completed: 2026-04-08*
