# WIA-EDU-010 Student Data Standard v1.1

## Phase 2: API Interface & Integration

**Status:** ✅ Complete
**Version:** 1.1.0
**Date:** 2025-01-15
**Philosophy:** 弘益人間 (Benefit All Humanity)

---

## 1. Overview

Phase 2 extends v1.0 with comprehensive API specifications, authentication mechanisms, and integration protocols. This phase enables interoperability between student information systems and third-party applications.

## 2. Changes from v1.0

- Added RESTful API specification
- Defined authentication and authorization
- Added webhook support for real-time events
- Specified rate limiting and pagination
- Added batch operations
- Defined error handling standards

## 3. RESTful API Specification

### 3.1 Base URL Structure

```
https://api.{institution}.edu/wia/v1/
```

### 3.2 Resource Endpoints

#### Student Resources

```
GET    /students                    # List students (paginated)
POST   /students                    # Create student
GET    /students/{studentId}        # Get student profile
PUT    /students/{studentId}        # Update student profile
PATCH  /students/{studentId}        # Partial update
DELETE /students/{studentId}        # Soft delete student
```

#### Academic Records

```
GET    /students/{studentId}/records              # Get all academic records
POST   /students/{studentId}/records              # Add new record
GET    /students/{studentId}/records/{recordId}   # Get specific record
PUT    /students/{studentId}/records/{recordId}   # Update record
DELETE /students/{studentId}/records/{recordId}   # Delete record

GET    /students/{studentId}/transcripts          # Generate transcript
POST   /students/{studentId}/transcripts/request  # Request official transcript
```

#### Attendance

```
GET    /students/{studentId}/attendance           # Get attendance records
POST   /students/{studentId}/attendance           # Record attendance
GET    /students/{studentId}/attendance/summary   # Get attendance summary
```

#### Privacy & Consent

```
GET    /students/{studentId}/privacy              # Get privacy settings
PUT    /students/{studentId}/privacy              # Update privacy settings
GET    /students/{studentId}/consent              # Get consent log
POST   /students/{studentId}/consent              # Record new consent
DELETE /students/{studentId}/consent/{consentId}  # Withdraw consent
```

#### Data Export (GDPR)

```
POST   /students/{studentId}/export               # Request data export
GET    /students/{studentId}/export/{exportId}    # Check export status
GET    /students/{studentId}/export/{exportId}/download  # Download export
```

## 4. Authentication

### 4.1 Supported Methods

**OAuth 2.0** (REQUIRED)
- Authorization Code Flow for user applications
- Client Credentials Flow for server-to-server
- Token expiration: 1 hour (access), 30 days (refresh)

**OpenID Connect** (RECOMMENDED)
- SSO integration
- Student/staff authentication

**API Keys** (OPTIONAL)
- For internal system integration
- Must be rotated every 90 days

### 4.2 Authorization Header

```http
Authorization: Bearer {access_token}
```

### 4.3 Scopes

```
students:read          - Read student profiles
students:write         - Create/update students
records:read           - Read academic records
records:write          - Create/update records
attendance:read        - Read attendance data
attendance:write       - Record attendance
privacy:read           - Read privacy settings
privacy:write          - Update privacy settings
export:request         - Request data exports
```

## 5. Request/Response Format

### 5.1 Content Types

**Supported:**
- `application/json` (default)
- `application/xml` (legacy support)

**Headers:**
```http
Content-Type: application/json
Accept: application/json
```

### 5.2 Standard Response Format

**Success Response:**
```json
{
  "success": true,
  "data": { },
  "metadata": {
    "requestId": "req_abc123",
    "timestamp": "2025-01-15T10:30:00Z",
    "version": "1.1.0"
  }
}
```

**Error Response:**
```json
{
  "success": false,
  "error": {
    "code": "STUDENT_NOT_FOUND",
    "message": "Student with ID '2024-CS-001' not found",
    "details": {
      "studentId": "2024-CS-001"
    }
  },
  "metadata": {
    "requestId": "req_abc123",
    "timestamp": "2025-01-15T10:30:00Z",
    "version": "1.1.0"
  }
}
```

## 6. Error Handling

### 6.1 HTTP Status Codes

```
200 OK                  - Successful GET, PUT, PATCH
201 Created             - Successful POST
204 No Content          - Successful DELETE
400 Bad Request         - Invalid request data
401 Unauthorized        - Missing/invalid authentication
403 Forbidden           - Insufficient permissions
404 Not Found           - Resource not found
409 Conflict            - Duplicate/conflicting data
422 Unprocessable       - Validation error
429 Too Many Requests   - Rate limit exceeded
500 Internal Error      - Server error
503 Service Unavailable - Maintenance mode
```

### 6.2 Error Codes

```
INVALID_REQUEST         - Malformed request
AUTHENTICATION_REQUIRED - No auth token provided
INVALID_TOKEN           - Token expired or invalid
INSUFFICIENT_SCOPE      - Missing required scope
STUDENT_NOT_FOUND       - Student ID not found
RECORD_NOT_FOUND        - Academic record not found
VALIDATION_ERROR        - Data validation failed
DUPLICATE_STUDENT       - Student already exists
RATE_LIMIT_EXCEEDED     - Too many requests
FERPA_VIOLATION         - Privacy rule violation
GDPR_VIOLATION          - GDPR compliance issue
```

## 7. Pagination

### 7.1 Request Parameters

```
?page=1              # Page number (1-based)
&limit=50            # Items per page (max 100)
&sort=lastName       # Sort field
&order=asc           # Sort order (asc/desc)
```

### 7.2 Response Format

```json
{
  "success": true,
  "data": [ ],
  "pagination": {
    "page": 1,
    "limit": 50,
    "total": 10000,
    "totalPages": 200,
    "hasNext": true,
    "hasPrevious": false,
    "links": {
      "self": "/students?page=1&limit=50",
      "next": "/students?page=2&limit=50",
      "first": "/students?page=1&limit=50",
      "last": "/students?page=200&limit=50"
    }
  }
}
```

## 8. Rate Limiting

### 8.1 Limits

- **Standard:** 1000 requests per hour
- **Authenticated:** 5000 requests per hour
- **Premium:** 10000 requests per hour

### 8.2 Headers

```http
X-RateLimit-Limit: 5000
X-RateLimit-Remaining: 4999
X-RateLimit-Reset: 1642780800
```

## 9. Webhooks

### 9.1 Supported Events

```
student.created         - New student enrolled
student.updated         - Student profile updated
student.deleted         - Student withdrawn/deleted
record.added            - New academic record
record.updated          - Grade/record modified
attendance.recorded     - Attendance recorded
privacy.updated         - Privacy settings changed
consent.granted         - New consent given
consent.withdrawn       - Consent withdrawn
export.completed        - Data export ready
```

### 9.2 Webhook Payload

```json
{
  "event": "student.created",
  "timestamp": "2025-01-15T10:30:00Z",
  "data": {
    "studentId": "2024-CS-001",
    "changes": { }
  },
  "metadata": {
    "webhookId": "wh_abc123",
    "deliveryId": "del_xyz789"
  }
}
```

### 9.3 Webhook Security

- HMAC-SHA256 signature verification
- TLS 1.3 required
- Retry policy: 3 attempts with exponential backoff

## 10. Batch Operations

### 10.1 Batch Create

```http
POST /students/batch

{
  "students": [
    { },
    { }
  ]
}
```

### 10.2 Batch Response

```json
{
  "success": true,
  "results": [
    {"success": true, "studentId": "2024-CS-001"},
    {"success": false, "error": "VALIDATION_ERROR"}
  ],
  "summary": {
    "total": 100,
    "successful": 98,
    "failed": 2
  }
}
```

## 11. Filtering and Search

### 11.1 Query Parameters

```
?firstName=John
&lastName=Smith
&enrollmentStatus=active
&program=Computer Science
&enrollmentDate[gte]=2024-01-01
&enrollmentDate[lte]=2024-12-31
```

### 11.2 Full-Text Search

```
?q=John Smith Computer Science
```

## 12. Versioning

### 12.1 API Version

Include in URL path: `/wia/v1/`

### 12.2 Schema Version

Include in headers:
```http
X-WIA-Schema-Version: 1.1.0
```

---

**Philosophy:** 弘益人間 (Benefit All Humanity)

*Enabling seamless integration while protecting student privacy and data rights.*

© 2025 MIT License
