# Session 21 turn 5 — 2026-05-13 14:00 — Refactor Allow* sang PER-NV (Mig 29 drop Mig 28)

**Dev:** Claude Opus 4.7 1M Max (em main solo — Implementer REFUSE per cross-stack reasoning chain rule)
**Duration:** ~2h
**Base commit:** `eea86fd` (S21 t4 Chunk E Docs)
**Commits này turn:** `0366946` (A BE+Mig 29) → `63234b2` (B FE Admin) → `5ccb2a7` (C FE eOffice) → this (D Docs)

## Trigger

User feedback sau UAT S21 t4 deploy: "à cấu hình cho từng người nhé (chứ ko phải là cho toàn bộ quy trình duyệt), thêm table vào SQL luôn để cấu hình cho dễ."

→ Workflow-level Allow* (Mig 28 S21 t4) **chưa fit UX request** — admin muốn config quyền duyệt RIÊNG cho TỪNG NV (per-Level slot trong workflow).

## Q&A clarify (2 lượt AskUserQuestion)

### Lượt 1 — Scope per-NV + xử lý Mig 28 cũ:

| Câu | User chốt |
|---|---|
| Scope "từng người" | **Per-Level**: 5 flag (4 F1 + 1 F3) gắn slot Designer. F2 per-Drafter user. |
| Mig 28 xử lý | **Migrate bốc → per-NV bulk + drop**: copy workflow → Levels của workflow, backfill Users F2 từ PE link, drop 6 column workflow. |

→ 6 flag split scope theo role natural:
- **F1 (4 mode) + F3 (1 flag)** = Approver permission → gắn `ApprovalWorkflowLevels` (1 slot Approver = 1 row Level)
- **F2 (1 flag)** = Drafter permission → gắn `Users` (per-Drafter user global)

## Chunk A — BE schema + Service refactor (`0366946`)

### Mig 29 `RefactorAdvancedOptionsToPerLevelAndDrafterUser` (4-stage)

EF auto-generated drop-then-add order WRONG (data loss khi DROP trước BACKFILL).
Phải REORDER manual:

```csharp
public override void Up(MigrationBuilder migrationBuilder)
{
    // Stage 1: ADD 5 column ApprovalWorkflowLevels (per slot)
    AddColumn × 5 (AllowReturn*+AllowApproverEditDetails)

    // Stage 2: ADD 1 column Users (per-Drafter F2)
    AddColumn AllowDrafterSkipToFinal

    // Stage 3: BACKFILL bulk SQL
    migrationBuilder.Sql(@"
        UPDATE l SET l.AllowReturnOneLevel = w.AllowReturnOneLevel, ...
        FROM ApprovalWorkflowLevels l
        INNER JOIN ApprovalWorkflowSteps s ON s.Id = l.ApprovalWorkflowStepId
        INNER JOIN ApprovalWorkflows w ON w.Id = s.ApprovalWorkflowId;
    ");
    migrationBuilder.Sql(@"
        UPDATE u SET u.AllowDrafterSkipToFinal = 1
        FROM Users u WHERE EXISTS (
          SELECT 1 FROM PurchaseEvaluations pe
          INNER JOIN ApprovalWorkflows w ON w.Id = pe.ApprovalWorkflowId
          WHERE pe.DrafterUserId = u.Id AND w.AllowDrafterSkipToFinal = 1
        );
    ");

    // Stage 4: DROP 6 column workflow-level (Mig 28 cleanup)
    DropColumn × 6 (Mig 28 fields)
}
```

3-file rule complete. Apply LocalDB Dev + Design success.

### Domain entity

```csharp
// Mig 28 cũ ApprovalWorkflow.cs — REMOVE 6 Allow* field
// Mig 29 — entity nguyên thuỷ workflow-level cũ giảm về Code/Name/Version/Active/Selectable only.

// ApprovalWorkflowLevel.cs — ADD 5 Allow* field
public bool AllowReturnOneLevel { get; set; }
public bool AllowReturnOneStep { get; set; }
public bool AllowReturnToAssignee { get; set; }
public bool AllowReturnToDrafter { get; set; } = true;  // S17 backward compat
public bool AllowApproverEditDetails { get; set; }

// User.cs — ADD 1 Allow* field
public bool AllowDrafterSkipToFinal { get; set; }
```

### Service refactor `ApplyReturnModeAsync`

```csharp
// Resolve currentLevel slot từ pointer
ApprovalWorkflowLevel? currentLevel = null;
if (evaluation.CurrentWorkflowStepIndex is int csi && csi < stepsOrdered.Count) {
    var step = stepsOrdered[csi];
    currentLevel = step.Levels.FirstOrDefault(l => l.Order == evaluation.CurrentApprovalLevelOrder);
}

// Validate Allow* từ Level slot (Admin bypass)
if (!isAdmin && currentLevel is not null) {
    var allowed = mode switch {
        WorkflowReturnMode.OneLevel => currentLevel.AllowReturnOneLevel,
        WorkflowReturnMode.OneStep => currentLevel.AllowReturnOneStep,
        WorkflowReturnMode.Assignee => currentLevel.AllowReturnToAssignee,
        WorkflowReturnMode.Drafter => currentLevel.AllowReturnToDrafter,
        _ => false,
    };
    if (!allowed) throw new ConflictException($"Cấp Approver hiện tại không bật mode '{mode}'.");
}
```

V1 legacy phiếu (no ApprovalWorkflowId) → fallback Drafter behavior tự động.

### DRAFTER trình refactor

```csharp
if (skipToFinal && evaluation.ApprovalWorkflowId is Guid skipAwId) {
    if (!isAdmin) {
        var drafterUser = await userManager.FindByIdAsync(actorUserId.Value.ToString());
        if (!drafterUser.AllowDrafterSkipToFinal)
            throw new ConflictException($"User '{drafterUser.FullName}' không được phép gửi thẳng Cấp cuối.");
    }
    // ... set pointer = max Step + max Level
}
```

### Helper `EnsureEditableForDetailsAsync` refactor

```csharp
// Read level.AllowApproverEditDetails thay vì workflow
if (!level.AllowApproverEditDetails)
    throw new ConflictException($"Cấp Approver hiện tại (Bước {step.Order} / Cấp {levelOrder}) " +
        "không được cấp quyền chỉnh sửa Section 2.");
```

### DTO refactor

- `AwLevelDto +5 Allow*`, `AwDefinitionDto -6 Allow*`
- `CreateAwLevelInput +5 Allow*`, `CreateAwDefinitionCommand -6 Allow*`
- `ApprovalWorkflowOptionsDto`: 5 flag (F2 separate field)
- `PurchaseEvaluationDetailBundleDto`:
  - RENAME `WorkflowOptions → CurrentLevelOptions`
  - ADD `DrafterAllowSkipToFinal bool`

GetPe handler populate:
- `currentLevelOptions` = 5 Allow* của Cấp hiện tại
- `drafterAllowSkipToFinal` = lookup User.AllowDrafterSkipToFinal từ DrafterUserId

## Chunk B — FE Admin Designer (`63234b2`)

`ApprovalWorkflowsV2Page.tsx`:

- Types: `LevelDto +5 Allow*`, `DefinitionDto -6 Allow*`, `EditLevelEntry +5 Allow*`
- Factory `makeDefaultLevelEntry(order, userId)` — 4 false + AllowReturnToDrafter=true
- `copyFromDefinition` propagate 5 Allow* từ Levels

UI refactor:
- **REMOVE** entire section "Cấu hình nâng cao" workflow-level (amber bg 6 checkbox)
- **REPLACE** với info banner violet ngắn:
  > ⓘ Cấu hình quyền duyệt (Trả lại modes + Edit Section 2) đặt RIÊNG cho từng NV ở mỗi Cấp dưới đây. F2 "Gửi thẳng Cấp cuối" (Drafter) cấu hình ở User Management (mỗi NV global).
- **ADD** inline panel mỗi Level entry (NV row) — 5 checkbox grid-cols-2:
  - Trả về 1 Cấp trước
  - Trả về 1 Bước trước
  - Trả về Người chỉ định
  - Trả về Drafter (mặc định checked)
  - Cho phép chỉnh sửa Section 2 (col-span-2)
- Header "Quyền duyệt NV #N" [10px] uppercase amber-700

POST body propagate 5 Allow* per slot trong `steps[].levels[].*`.

F2 UI defer — User Management page sẽ thêm 1 toggle khi admin UAT request.

## Chunk C — FE eOffice (`5ccb2a7`) mirror 2 app

Types:
- `ApprovalWorkflowOptions` REMOVE allowDrafterSkipToFinal (still 5 flag)
- `PeDetailBundle`:
  - RENAME `workflowOptions → currentLevelOptions`
  - ADD `drafterAllowSkipToFinal: boolean`

PeWorkflowPanel.tsx:
- RENAME `wfOptions → levelOptions`, read `evaluation.currentLevelOptions`
- 4 mode radio render conditional theo levelOptions.allowReturnXxx

PeDetailTabs.tsx:
- F3 approverEditMode: read `currentLevelOptions?.allowApproverEditDetails`
- F2 allowSkipToFinal: read `drafterAllowSkipToFinal` (per-user)

## Chunk D — Docs (this commit)

- `docs/database/schema-diagram.md §14`: title Mig 22-29 S17-21 + add 5 column Level + 1 column User block
- `docs/STATUS.md` S21 t5 + 28→29 mig
- `docs/HANDOFF.md` TL;DR đầy đủ trên cùng
- Session log (file này)

## Stats cumulative S21 t5

| Metric | Trước (S21 t4) | Sau (S21 t5) | Δ |
|---|---|---|---|
| DB tables | 59 | 59 | 0 |
| **Migrations** | 28 | **29** | **+1** (Mig 29 refactor per-NV) |
| Endpoints | ~143 | ~143 | 0 (body unchanged, schema-source different) |
| FE pages | 34 | 34 | 0 |
| Unit tests | 84 | 84 | 0 (UAT defer test-after §7) |
| Gotchas | 45 | 45 | 0 |
| Memory | 17 | 17 | 0 |
| Skills | 6 | 6 | 0 |
| Sub-agents | 4 seeds-only | 4 seeds-only | 0 |
| **Commits S21 t5** | — | **4** | `0366946` → `63234b2` → `5ccb2a7` → this |

## Lessons learned

1. **Reorder EF migration manual khi cần BACKFILL.** EF auto-generate drop-then-add order — fail nếu cần preserve data. Pattern reusable: ADD → BACKFILL SQL → DROP. Test backfill SQL với realistic data trước commit.

2. **Per-NV permission pattern**. Khi cần config role/permission theo slot user (vd workflow approver level), gắn flag vào table chứa user FK (ApprovalWorkflowLevels có ApproverUserId), KHÔNG gắn parent table (ApprovalWorkflows). Pattern reusable cho future N-stage hoặc HĐ V2.

3. **Split per-Role vs per-User scope**. F1+F3 thuộc Approver role → per-slot (Level table). F2 thuộc Drafter role → per-User (Users table). Cấu hình natural theo role context, không hardcode 1 scope cho mọi flag.

4. **Backward compat backfill discipline**. Mig 29 bulk copy preserve admin config Mig 28 → workflow cũ chạy đúng ngay sau deploy. KHÔNG yêu cầu admin reconfig lần đầu (UAT pain point avoided).

5. **Iteration speed S21 cumulative**: t3 fix bug → t4 add feature workflow-level → t5 refactor per-NV theo UAT feedback. 3 iteration cùng day, mỗi turn dedicated session, no scope creep. Per `feedback_drastic_refactor_scope`.

## Handoff

- ✅ All 4 chunk committed local (4 commits)
- ⏭ **PENDING bro confirm push remote** — `git push origin main` 4 commits ahead `eea86fd..HEAD`
- ⏭ Sau push: CI sẽ trigger (.cs + .tsx + Mig) → 🟩 CICD Monitor spawn smoke verify Mig 29 prod apply + currentLevelOptions returned correctly + drafterAllowSkipToFinal populated cho user backfill

User next action expected: UAT verify 5 checkbox per Level slot trong Designer. UAT Drafter F2 (BE field sẵn, nhưng User Mgmt UI defer — admin có thể test qua SQL UPDATE Users.AllowDrafterSkipToFinal=1 cho test user nếu cần verify F2 immediate).

## References

- BE Mig 29: `src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/20260513130144_RefactorAdvancedOptionsToPerLevelAndDrafterUser.cs`
- Domain: `src/Backend/SolutionErp.Domain/ApprovalWorkflowsV2/ApprovalWorkflow.cs` + `Identity/User.cs`
- BE Service: `src/Backend/SolutionErp.Infrastructure/Services/PurchaseEvaluationWorkflowService.cs`
- BE handlers: `src/Backend/SolutionErp.Application/PurchaseEvaluations/PurchaseEvaluationDetailFeatures.cs`
- DTO: `src/Backend/SolutionErp.Application/PurchaseEvaluations/Dtos/PurchaseEvaluationDtos.cs`
- FE Admin: `fe-admin/src/pages/system/ApprovalWorkflowsV2Page.tsx`
- FE eOffice × 2 app: `{fe-admin,fe-user}/src/components/pe/PeWorkflowPanel.tsx` + `PeDetailTabs.tsx` + `types/purchaseEvaluation.ts`
- Spec: S21 t4 HANDOFF + user UAT feedback "cấu hình cho từng người"