# SAM API 개발 규칙

**업데이트**: 2025-11-10

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## 1. Architecture Philosophy

- **Service First**: All business logic must be written in Service classes (public functions)
- **Controller**: Only responsible for DI injection of Services and calling them. Use ApiResponse::handle() for responses
- **Exception Flow**: Errors are thrown → converted to JSON by global handler
- **Context Enforcement**: Base Service requires tenantId(), apiUserId(). Throws exception if not set

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## 2. Multi-tenancy & Models

- BelongsToTenant global scope applied
- ModelTrait for is_active, date handling
- SoftDeletes by default
- Common columns: tenant_id, created_by, updated_by, deleted_by (COMMENT required)
- FK constraints: Created during design, minimal in production

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## 3. Middleware Stack

- ApiKeyMiddleware, CheckSwaggerAuth, CorsMiddleware, CheckPermission, PermMapper
- Default route group: auth.apikey (some with auth:sanctum)

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## 4. Routing (v1)

- Auth, Common codes, Files, Tenants, Users (me/tenants/switch), Menus+Permissions, Roles/Permissions, Departments, Field settings, Options, Categories, Classifications, Products, BOM
- REST conventions: index/show/store/update/destroy + extensions (toggle, bulkUpsert, reorder)

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## 5. Controller/Service Rules

- **Controller**: FormRequest type-hint → only pass $request->validated() to Service
- **Service**: extends Service, tenantId()/apiUserId() required
- **Lists**: Pagination, explicit search parameters
- **Responses**: {success, message, data}, message must be i18n key only

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## 6. i18n & Response Messages

- Messages: lang/{locale}/message.php
- Errors: lang/{locale}/error.php
- **Rule**: No direct strings, must use __('message.xxx'), __('error.xxx')
- Common keys: message.fetched/created/updated/deleted/bulk_upsert/reordered
- Resource-specific keys allowed: message.product.created, message.bom.bulk_upsert

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## 7. Validation (FormRequest)

- **No direct validate() calls**. Separate all into FormRequest classes
- **Reuse common Requests**: PaginateRequest, BomItemsRequest, DateRangeRequest
- **Boundary validation** (effective_from ≤ effective_to) in Request

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## 8. Audit Logging

- **Table**: audit_logs (tenant_id, target_type, target_id, action, before/after(json), actor_id, ip, ua, created_at)
- **Actions**: created, updated, deleted, released, cloned, items_replaced, diff_viewed
- **Retention**: 13 months default, audit:prune scheduler cleanup
- **Failure tolerance**: Log failures don't block business operations

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## 9. Domain Rules

- **Status**: Strings (DRAFT/RELEASED/ARCHIVED)
- **Unique/Indexes**: models(code), model_versions(version_no), bom_items(parent, order)
- **BOM**: Supports summary/validate/bulkUpsert/reorder

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## 개발 시 필수 체크

```
✓ Service-First 패턴 (Controller는 단순)
✓ BelongsToTenant scope 적용
✓ ModelTrait 사용
✓ SoftDeletes 적용
✓ FormRequest 검증
✓ i18n 키 사용 (__('message.xxx'))
✓ 감사 로그 고려
✓ tenant_id 필터링 확인
```