# Phase 2.5: Access Control - COMPLETE! ✅

**Completion Date**: 2026-02-15 21:14:00 UTC

## What Was Accomplished

### Four Major Components Implemented

1. ✅ **Permission System**
   - Permission model with resource-based access control
   - Three permission levels: Read, Write, Admin
   - Support for multiple resource types (profiles, health data, lab results, medications)
   - Audit trail (granted_by tracking)

2. ✅ **Share Management**
   - Share model for resource sharing between users
   - Expiration support for temporary shares
   - Active/inactive status tracking
   - Full CRUD API endpoints

3. ✅ **Permission Middleware**
   - has_permission() middleware for route protection
   - Automatic permission checking based on JWT claims
   - Resource ID extraction from URL paths
   - Support for both direct permissions and shares

4. ✅ **Permission Check API**
   - Check permissions programmatically
   - Support for all permission levels
   - Consolidated permission checking (direct + shared)

## API Endpoints

### Share Management (5)
- POST /api/shares - Create share
- GET /api/shares - List shares
- GET /api/shares/:id - Get share details
- PUT /api/shares/:id - Update share
- DELETE /api/shares/:id - Revoke share

### Permission Check (1)
- GET /api/permissions/check - Check if user has permission

## Security Features

- JWT-based authentication required for all endpoints
- Only resource owners can create/update/delete shares
- Share recipients can view their shares
- Permission middleware enforces access control
- Audit trail for all permission grants

## Project Status

Phase 2.1: ✅ Backend Initialization
Phase 2.2: ✅ MongoDB & Models
Phase 2.3: ✅ JWT Authentication
Phase 2.4: ✅ User Management Enhancement
Phase 2.5: ✅ Access Control ← COMPLETE

Overall Phase 2 Progress: 75% Complete