Files
solution-erp/.claude/skills/form-engine/SKILL.md
pqhuy1987 5113e4c771 [CLAUDE] Phase2: Form Engine MVP + docs (gotchas, skill, handoff)
Backend Forms:
- Domain/Forms: ContractTemplate (FormCode, Name, ContractType, FileName, StoragePath, Format, FieldSpec JSON, IsActive) + ContractClause
- EF config voi unique FormCode + query filter IsDeleted
- DbSets + IApplicationDbContext update
- Migration AddForms (bang 14 total)
- Packages: DocumentFormat.OpenXml 3.x + ClosedXML 0.105+
- Application/Forms:
  - IFormRenderer interface + RenderResult record
  - FormFeatures.cs: List/Get/Render CQRS
  - IWebHostEnvironmentLocator (abstract IWebHostEnvironment)
- Infrastructure/Forms:
  - DocxRenderer: OpenXml-based placeholder {{field}} replace, handle split runs (gom text tat ca <w:t> trong paragraph, replace, gan lai text dau + clear rest)
  - XlsxRenderer: ClosedXML cell value replace
  - FormRenderer router theo format docx/xlsx
- Api:
  - FormsController: GET /templates (filter type, onlyActive), GET /templates/{id}, POST /templates/{id}/render (return file)
  - WebHostEnvironmentLocator impl
- DbInitializer SeedContractTemplatesAsync: seed 8 template metadata, IsActive=true chi khi file ton tai

Templates vat ly:
- Copy 5 .docx/.xlsx tu FORM/ sang wwwroot/templates/
- 3 .doc (FO-002.02/03/06) chua convert: IsActive=false (Word COM bi stuck luc test, can retry voi DisplayAlerts=0 hoac LibreOffice)
- scripts/convert-doc-to-docx.ps1 (Word COM automation)

Frontend fe-admin:
- types/forms.ts: ContractTemplate + ContractTypeLabel
- pages/forms/FormsPage.tsx: list templates + Render dialog (paste JSON data → download .docx/.xlsx)
- Route /forms them vao App.tsx

Bug fix:
- SpaceProcessingModeValues namespace: wrap EnumValue<> full path
- SaveAs2($path, 16) thay vi SaveAs([ref], [ref]) — PowerShell type issue
- Word COM stuck: kill process, skip .doc cho MVP

Docs (theo yeu cau user):
- docs/gotchas.md MOI: 17 pitfalls nhom theo tech stack / EF Core / OpenXml / JSON / dev workflow
- .claude/skills/form-engine/SKILL.md: placeholder → full spec (algorithm + code pointers + API + limitations)
- .claude/skills/permission-matrix/SKILL.md: placeholder → full spec (BE policy + FE guard + seed + pitfalls)
- docs/HANDOFF.md MOI: brief 5 phut cho session sau (run quickstart + where we are + next steps + file tree + gotchas ref)
- docs/STATUS.md: update cumulative stats + next up Phase 3
- docs/changelog/migration-todos.md: tick Phase 2 iteration 1 items + add iteration 2 list
- docs/changelog/sessions/2026-04-21-1200-phase2-form-engine.md: session log
- CLAUDE.md root: them reference den gotchas + HANDOFF

E2E verified:
- GET /api/forms/templates (onlyActive=false) → 8 templates
- POST /api/forms/templates/{FO-002.05}/render voi data dict → HTTP 200 + file .docx 482KB (Microsoft Word 2007+ OK)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-21 12:01:11 +07:00

5.4 KiB

name, description, when-to-use
name description when-to-use
form-engine Template engine render 8 form hợp đồng ra .docx/.xlsx giống 100% mẫu gốc. Placeholder syntax {{field}}. Dùng khi export HĐ, upload template mới, debug render lỗi format, gen mã HĐ theo RG-001.
export contract to word
render template docx
xuất đơn đặt hàng excel
placeholder không replace
upload template mới
gen mã hợp đồng

Form Engine Skill

Status: Phase 2 implemented (MVP — placeholder replace cơ bản). Missing: loop {{#loop}}...{{/loop}} cho table lặp, field spec JSON, PDF convert, form builder FE.

Tech stack

Layer Tech Purpose
.docx render DocumentFormat.OpenXml 3.x Free, maintained by MS
.xlsx render ClosedXML 0.105+ Free LGPL, dễ dùng, support formula/style
PDF convert LibreOffice headless (chưa implement) soffice --headless --convert-to pdf — Phase 4
.doc.docx Word COM (PowerShell) Chạy offline 1 lần trên dev machine

Placeholder syntax

Template (.docx hoặc .xlsx) chứa {{fieldName}} — regex \{\{([a-zA-Z0-9_\.]+)\}\}:

Hợp đồng số: {{maHopDong}}
Bên A: {{benA_tenCongTy}}
Giá trị: {{giaTri}}

Data dictionary:

{
  "maHopDong": "FLOCK 01/HĐGK/SOL&PVL/03",
  "benA_tenCongTy": "Công ty TNHH Xây dựng Solutions",
  "giaTri": "150,000,000 VND"
}

Null value → replace bằng rỗng. Key không có trong data → giữ nguyên placeholder.

Code pointers

  • src/Backend/SolutionErp.Application/Forms/Services/IFormRenderer.cs — interface
  • src/Backend/SolutionErp.Infrastructure/Forms/DocxRenderer.cs — OpenXml-based
  • src/Backend/SolutionErp.Infrastructure/Forms/XlsxRenderer.cs — ClosedXML-based
  • src/Backend/SolutionErp.Infrastructure/Forms/FormRenderer.cs — router theo format
  • src/Backend/SolutionErp.Application/Forms/FormFeatures.cs — CQRS list/get/render
  • src/Backend/SolutionErp.Api/Controllers/FormsController.cs — REST endpoints
  • src/Backend/SolutionErp.Infrastructure/Persistence/DbInitializer.csSeedContractTemplatesAsync
  • fe-admin/src/pages/forms/FormsPage.tsx — UI list + render test
  • src/Backend/SolutionErp.Api/wwwroot/templates/ — file templates vật lý

API endpoints

Method Path Purpose
GET /api/forms/templates?type=&onlyActive= List templates
GET /api/forms/templates/{id} Get single
POST /api/forms/templates/{id}/render Render với data dictionary → return file

Key algorithm — Placeholder split fix

Word thường split placeholder thành nhiều <w:t> runs (vì style, typo check…). DocxRenderer xử lý bằng:

foreach (var para in root.Descendants<Paragraph>()) {
    var textElements = para.Descendants<Text>().ToList();
    var combined = string.Concat(textElements.Select(t => t.Text));
    if (!combined.Contains("{{")) continue;

    var replaced = Regex.Replace(combined, @"\{\{([a-zA-Z0-9_\.]+)\}\}", match =>
        data.TryGetValue(match.Groups[1].Value, out var v) ? (v ?? "") : match.Value);

    if (replaced != combined) {
        textElements[0].Text = replaced;         // gán vào text đầu
        textElements[0].Space = ...Preserve;     // giữ space
        for (var i = 1; i < textElements.Count; i++)
            textElements[i].Text = "";            // clear phần còn lại
    }
}

Workflow thêm template mới

  1. Upload file .docx / .xlsxwwwroot/templates/{formCode}.{ext}
  2. Insert row vào ContractTemplates:
    INSERT INTO ContractTemplates (FormCode, Name, ContractType, FileName, StoragePath, Format, IsActive, CreatedAt)
    VALUES ('SOL-CCM-FO-002.XX', 'Tên', 1, 'file.docx', 'templates/file.docx', 'docx', 1, GETUTCDATE());
    
  3. Template tự động xuất hiện ở /forms FE

Known limitations

# Limitation Phase fix
1 Không support {{#loop}}...{{/loop}} cho table lặp Phase 2 iteration 2
2 Không có field spec JSON — form builder FE phải điền JSON thủ công Phase 2 iteration 2
3 3 file .doc (FO-002.02/03/06) chưa convert → IsActive=false Convert offline qua Word COM
4 Không có PDF convert → preview chỉ download .docx Phase 4
5 Không handle .docm (macro) — chỉ accept .docx / .xlsx By design
6 Không convert format trong template (vd number → 150,000,000 VND) — BE phải format trước khi pass data Phase 3 khi gen mã HĐ

Common pitfalls (xem gotchas.md)

  • Placeholder bị split runs → đã handle trong DocxRenderer
  • SpaceProcessingModeValues namespace — xem gotcha #9
  • Word COM stuck — gotcha #12
  • SaveAs type conversion — gotcha #11
  • Template file không tồn tại → throw NotFoundException ở RenderCommandHandler

Gen mã HĐ (RG-001) — chưa implement (Phase 3)

Xem docs/forms-spec.md §RG-001. Tóm tắt format:

Loại HĐ Format
HĐ Thầu phụ {Project}/HĐTP/SOL&{Partner}/{Seq}
HĐ Giao khoán {Project}/HĐGK/SOL&{Partner}/{Seq}
HĐ NCC {Project}/NCC/SOL&{Partner}/{Seq}
HĐ Nguyên tắc {Year}/NCC/SOL&{Partner}/{Seq}

Planned implementation: IContractCodeGenerator.GenerateAsync() với transaction SERIALIZABLE + ContractCodeSequences table để tránh race.