---
phase: 04-bulk-operations-and-provisioning
plan: 01
subsystem: bulk-operations
tags: [csvhelper, microsoft-graph, bulk-operations, models, interfaces, dotnet]

# Dependency graph
requires:
  - phase: 03-storage
    provides: "OperationProgress model and async/progress patterns used by BulkOperationRunner"
provides:
  - "CsvHelper 33.1.0 and Microsoft.Graph 5.74.0 installed in main and test projects"
  - "14 core model/enum files for Phase 4 bulk operations"
  - "6 service interfaces for bulk member, site, folder, file transfer, template, and CSV validation"
  - "BulkOperationRunner static helper with continue-on-error and cancellation semantics"
  - "BulkResultCsvExportService stub (compile-ready)"
  - "Test scaffolds: 7 passing tests + 10 skipped scaffold tests"
affects: [04-02, 04-03, 04-04, 04-05, 04-06, 04-07, 04-08, 04-09, 04-10]

# Tech tracking
tech-stack:
  added: ["CsvHelper 33.1.0", "Microsoft.Graph 5.74.0"]
  patterns:
    - "BulkOperationRunner.RunAsync — continue-on-error with per-item BulkItemResult<T> tracking"
    - "BulkItemResult<T> factory methods Success/Failed — immutable result objects"
    - "BulkOperationSummary<T> — aggregate result with SuccessCount/FailedCount/HasFailures"
    - "CsvValidationRow<T> — parse error wrapper for CSV validation pipeline"

key-files:
  created:
    - "SharepointToolbox/Services/BulkOperationRunner.cs"
    - "SharepointToolbox/Core/Models/BulkOperationResult.cs"
    - "SharepointToolbox/Core/Models/SiteTemplate.cs"
    - "SharepointToolbox/Core/Models/BulkMemberRow.cs"
    - "SharepointToolbox/Core/Models/BulkSiteRow.cs"
    - "SharepointToolbox/Core/Models/TransferJob.cs"
    - "SharepointToolbox/Core/Models/FolderStructureRow.cs"
    - "SharepointToolbox/Core/Models/CsvValidationRow.cs"
    - "SharepointToolbox/Services/ICsvValidationService.cs"
    - "SharepointToolbox/Services/ITemplateService.cs"
    - "SharepointToolbox/Services/Export/BulkResultCsvExportService.cs"
    - "SharepointToolbox.Tests/Services/BulkOperationRunnerTests.cs"
    - "SharepointToolbox.Tests/Services/BulkResultCsvExportServiceTests.cs"
  modified:
    - "SharepointToolbox/SharepointToolbox.csproj"
    - "SharepointToolbox.Tests/SharepointToolbox.Tests.csproj"

key-decisions:
  - "ITemplateService uses ModelSiteTemplate alias — SiteTemplate is ambiguous between SharepointToolbox.Core.Models and Microsoft.SharePoint.Client; resolved with using alias"
  - "ICsvValidationService and BulkResultCsvExportService require explicit System.IO using — WPF project does not include System.IO in implicit usings (established pattern)"

patterns-established:
  - "BulkOperationRunner pattern: static RunAsync with IReadOnlyList<TItem>, Func delegate, IProgress<OperationProgress>, CancellationToken"
  - "CsvHelper attribute-based mapping: [Name()] attributes on CSV row model properties"

requirements-completed: [BULK-04, BULK-05]

# Metrics
duration: 12min
completed: 2026-04-03
---

# Phase 04 Plan 01: Dependencies + Core Models + Interfaces + BulkOperationRunner + Test Scaffolds Summary

**CsvHelper 33.1.0 + Microsoft.Graph 5.74.0 installed, 14 Phase 4 models created, 6 service interfaces defined, BulkOperationRunner with continue-on-error implemented, 7 tests passing**

## Performance

- **Duration:** 12 min
- **Started:** 2026-04-03T09:47:38Z
- **Completed:** 2026-04-03T09:59:38Z
- **Tasks:** 2
- **Files modified:** 27

## Accomplishments
- Installed CsvHelper 33.1.0 and Microsoft.Graph 5.74.0 in both main and test projects
- Created all 14 core model and enum files required by Phase 4 plans (BulkMemberRow, BulkSiteRow, TransferJob, FolderStructureRow, SiteTemplate, SiteTemplateOptions, TemplateLibraryInfo, TemplateFolderInfo, TemplatePermissionGroup, ConflictPolicy, TransferMode, CsvValidationRow, BulkOperationResult)
- Defined all 6 Phase 4 service interfaces (IFileTransferService, IBulkMemberService, IBulkSiteService, ITemplateService, IFolderStructureService, ICsvValidationService) and BulkResultCsvExportService stub
- Implemented BulkOperationRunner with continue-on-error, per-item result tracking, and OperationCanceledException propagation — 5 passing unit tests
- Created 4 test scaffold files; BulkResultCsvExportService has 2 real passing tests; scaffolds for CsvValidation and TemplateRepository skip until Plans 04-02

## Task Commits

Each task was committed atomically:

1. **Task 1+2: Install packages + models + interfaces + BulkOperationRunner + test scaffolds** - `39deed9` (feat)

**Plan metadata:** (to be added in final commit)

## Files Created/Modified
- `SharepointToolbox/SharepointToolbox.csproj` — Added CsvHelper 33.1.0, Microsoft.Graph 5.74.0
- `SharepointToolbox.Tests/SharepointToolbox.Tests.csproj` — Added CsvHelper 33.1.0
- `SharepointToolbox/Core/Models/BulkOperationResult.cs` — BulkItemResult<T> + BulkOperationSummary<T>
- `SharepointToolbox/Core/Models/BulkMemberRow.cs` — CSV row for bulk member addition with CsvHelper attributes
- `SharepointToolbox/Core/Models/BulkSiteRow.cs` — CSV row for bulk site creation
- `SharepointToolbox/Core/Models/TransferJob.cs` — File/folder transfer job descriptor
- `SharepointToolbox/Core/Models/FolderStructureRow.cs` — CSV row for folder creation with BuildPath()
- `SharepointToolbox/Core/Models/SiteTemplate.cs` — Template capture/apply model with nested TemplateSettings, TemplateLogo
- `SharepointToolbox/Core/Models/SiteTemplateOptions.cs` — Template capture option flags
- `SharepointToolbox/Core/Models/TemplateLibraryInfo.cs` — Library info within a template
- `SharepointToolbox/Core/Models/TemplateFolderInfo.cs` — Folder info (recursive children)
- `SharepointToolbox/Core/Models/TemplatePermissionGroup.cs` — Permission group capture
- `SharepointToolbox/Core/Models/ConflictPolicy.cs` — Skip/Overwrite/Rename enum
- `SharepointToolbox/Core/Models/TransferMode.cs` — Copy/Move enum
- `SharepointToolbox/Core/Models/CsvValidationRow.cs` — Validation wrapper with error collection and ParseError factory
- `SharepointToolbox/Services/BulkOperationRunner.cs` — Static RunAsync with continue-on-error semantics
- `SharepointToolbox/Services/IFileTransferService.cs` — File/folder transfer interface
- `SharepointToolbox/Services/IBulkMemberService.cs` — Bulk member add interface
- `SharepointToolbox/Services/IBulkSiteService.cs` — Bulk site creation interface
- `SharepointToolbox/Services/ITemplateService.cs` — Template capture/apply interface
- `SharepointToolbox/Services/IFolderStructureService.cs` — Folder creation interface
- `SharepointToolbox/Services/ICsvValidationService.cs` — CSV parse and validate interface
- `SharepointToolbox/Services/Export/BulkResultCsvExportService.cs` — Failed items CSV export stub
- `SharepointToolbox.Tests/Services/BulkOperationRunnerTests.cs` — 5 unit tests (all passing)
- `SharepointToolbox.Tests/Services/BulkResultCsvExportServiceTests.cs` — 2 unit tests (all passing)
- `SharepointToolbox.Tests/Services/CsvValidationServiceTests.cs` — 6 scaffold tests (all skipped, Plan 04-02)
- `SharepointToolbox.Tests/Services/TemplateRepositoryTests.cs` — 4 scaffold tests (all skipped, Plan 04-02)

## Decisions Made
- `ITemplateService` uses `using ModelSiteTemplate = SharepointToolbox.Core.Models.SiteTemplate` alias — `SiteTemplate` is ambiguous between `SharepointToolbox.Core.Models` and `Microsoft.SharePoint.Client` namespaces; using alias resolves without changing model or interface design
- `ICsvValidationService` and `BulkResultCsvExportService` require explicit `using System.IO;` — WPF project does not include System.IO in implicit usings; consistent with established project pattern from Phase 2/3

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 1 - Bug] Fixed SiteTemplate name ambiguity in ITemplateService**
- **Found during:** Task 2 (build verification)
- **Issue:** `Microsoft.SharePoint.Client.SiteTemplate` and `SharepointToolbox.Core.Models.SiteTemplate` are both in scope; CS0104 ambiguous reference error
- **Fix:** Added `using ModelSiteTemplate = SharepointToolbox.Core.Models.SiteTemplate;` alias in ITemplateService.cs
- **Files modified:** `SharepointToolbox/Services/ITemplateService.cs`
- **Verification:** `dotnet build SharepointToolbox.slnx` — Build succeeded 0 errors
- **Committed in:** `39deed9` (Task 2 commit)

**2. [Rule 1 - Bug] Added missing System.IO using in ICsvValidationService and BulkResultCsvExportService**
- **Found during:** Task 2 (build verification)
- **Issue:** `Stream` and `StringWriter` not found — WPF project does not include System.IO in implicit usings
- **Fix:** Added `using System.IO;` to both files
- **Files modified:** `SharepointToolbox/Services/ICsvValidationService.cs`, `SharepointToolbox/Services/Export/BulkResultCsvExportService.cs`
- **Verification:** `dotnet build SharepointToolbox.slnx` — Build succeeded 0 errors
- **Committed in:** `39deed9` (Task 2 commit)

---

**Total deviations:** 2 auto-fixed (2 x Rule 1 - compile bugs)
**Impact on plan:** Both fixes were required for the project to compile. No scope creep. Consistent with established System.IO pattern from Phases 2 and 3.

## Issues Encountered
None beyond the auto-fixed compile errors.

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- All Phase 4 foundation models, interfaces, and BulkOperationRunner are ready for Plans 04-02 through 04-10
- CsvValidationServiceTests and TemplateRepositoryTests scaffold tests are in place — implementations due in Plan 04-02
- `dotnet build SharepointToolbox.slnx` succeeds with 0 errors, 0 warnings

## Self-Check: PASSED

- BulkOperationRunner.cs: FOUND
- BulkOperationResult.cs: FOUND
- SiteTemplate.cs: FOUND
- ITemplateService.cs: FOUND
- 04-01-SUMMARY.md: FOUND
- Commit 39deed9: FOUND

---
*Phase: 04-bulk-operations-and-provisioning*
*Completed: 2026-04-03*