# Session 2026-04-21 14:30 — Phase 4 Report MVP + Docs Consolidation

**Dev:** Claude (Opus 4.7)
**Duration:** ~1h
**Base commit:** `7e957a7`

## Làm được

### Chunk K — BE Dashboard + Excel export

- `Application/Reports/Dtos/DashboardStatsDto.cs`: DashboardStats + PhaseCount + SupplierCount + ProjectCount + MonthlyValue
- `Application/Reports/Queries/GetDashboardStats` Handler:
  - Counts: Total / Active (not final) / Overdue (SlaDeadline < now) / PublishedThisMonth
  - TotalValueActive: SUM GiaTri của active contracts
  - ByPhase: group theo phase
  - TopSuppliers, TopProjects: top 5 theo count + sum value
  - MonthlyValue: fill 12 tháng liên tục (kể cả tháng rỗng)
- `Application/Reports/Services/IContractExcelExporter`
- `Infrastructure/Reports/ContractExcelExporter`:
  - ClosedXML workbook 10 cột (STT, Mã HĐ, Tên, Loại, Phase, NCC, Dự án, Giá trị, SLA, Ngày tạo)
  - Header style (bold + background blue)
  - Number format `#,##0` cho cột giá trị
  - Formula SUM tổng cuối bảng
  - Auto-fit columns + freeze header row
- `Application/Reports/Commands/ExportContractsToExcelCommand` (filter phase/supplier/project/date range)
- `Api/Controllers/ReportsController`: GET `/api/reports/dashboard`, GET `/api/reports/contracts/export`
- DI register IContractExcelExporter (Scoped)

### Chunk L — FE admin Dashboard + Reports

- `types/reports.ts`: DashboardStats type
- `components/BarChart.tsx`: generic horizontal bar chart — chỉ Tailwind, không thư viện ngoài (tránh bloat bundle)
- `pages/DashboardPage.tsx` rewrite:
  - 5 StatCard KPI: Tổng HĐ, Đang xử lý, Quá hạn SLA, Phát hành tháng, Tổng giá trị
  - Section By Phase (bar với PhaseBadge)
  - Section Monthly Value 12 tháng (BarChart)
  - Section Top 5 NCC + Top 5 dự án
  - Skeleton loader khi loading
  - Money formatter (tỷ / tr / số thường)
- `pages/ReportsPage.tsx` MỚI: form filter (phase / from / to) → export Excel button
- Route `/reports` added vào App.tsx

### Docs Consolidation (theo yêu cầu user)

- `docs/rules.md` MỚI: 9 section coding conventions (ngôn ngữ, BE Clean Arch, CQRS, validation, error, async, entity, DI, packages, FE React/TS, database, git, docs)
- `docs/architecture.md` MỚI: layered diagram, request lifecycle, workflow state machine, permission model, data flow sequence, deployment, non-functional
- `docs/database/schema-diagram.md` MỚI: ERD full 19 tables với mermaid, data flow diagram, lifecycle 1 HĐ, index strategy, relationship cardinality, soft delete behavior, SQL queries điển hình, migration history
- `docs/gotchas.md` UPDATE: thêm 7 pitfalls mới (20-26: Claude Code harness, DI register, Contract workflow, Permission)
- Session log này

## E2E verified

```bash
GET /api/reports/dashboard → 200
  totalContracts: 1, activeContracts: 0, overdueContracts: 0,
  publishedThisMonth: 1, totalValueActive: 0,
  byPhase: [{phase:9, count:1}],
  topSuppliers: [{supplierName:"Cong ty PVL Test", count:1, totalValue:150M}],
  topProjects: [...],
  monthlyValue: [12 rows, fill 0 if empty month]

GET /api/reports/contracts/export → HTTP 200, file xlsx 7229 bytes
  Microsoft Excel 2007+ OK

TS check fe-admin: pass
```

## Bug gặp + fix

| Bug | Fix |
|---|---|
| Edit tool "File not read" sau system-reminder | Read lại + Write full |
| TS unused import ContractPhaseLabel | Remove unused import |
| DI thiếu register IContractExcelExporter | Add `services.AddScoped<IContractExcelExporter, ContractExcelExporter>()` |

## Handoff session sau

### Phase 4 iteration 2 (polish)

- [ ] SLA overdue report (by role / phase, export Excel)
- [ ] Contract audit log export (từng HĐ ra PDF)
- [ ] Dashboard user-specific (HĐ tôi / role tôi)
- [ ] Chart library đơn giản (recharts hoặc tiếp tục Tailwind)

### Phase 5 — Production (T12-13)

- [ ] CI/CD Gitea Actions `.gitea/workflows/deploy.yml`
- [ ] IIS setup script + runbook
- [ ] HTTPS cert (win-acme)
- [ ] Rate limit middleware
- [ ] Security audit OWASP top 10
- [ ] Backup SQL runbook

### Phase 3 iteration 2 (vẫn còn thiếu)

- [ ] SlaExpiryJob BackgroundService auto-approve
- [ ] Email + in-app notification
- [ ] Upload attachment endpoint + FE
- [ ] RowVersion concurrency
- [ ] Render HĐ docx khi tạo

### Phase 2 iteration 2 (vẫn còn)

- [ ] Convert 3 file .doc
- [ ] Field spec JSON + form builder
- [ ] {{#loop}} block
- [ ] PDF convert

### Blocker

- ⏳ Gitea remote URL (vẫn chờ — sẽ quyết Phase 5)

## Thông số cumulative

| | Phase 2 | Phase 3 | **Phase 4 MVP** |
|---|---:|---:|---:|
| BE LOC | ~1900 | ~2700 | **~3100** |
| DB tables | 14 | 19 | 19 (không thêm table mới) |
| API endpoints | ~23 | ~31 | **~33** |
| FE pages | 9+5 | 14 | **16** (+Reports, +Dashboard rewrite) |
| Docs files | 24 | 26 | **30** (+rules, architecture, schema-diagram) |
| Commits | 5 | 6 | **7** (sắp) |