# Phase 4 Implementation Progress

**Status:** 22/68 tasks completed (32.4%)

**Test Coverage:** 170 unit tests, all passing ✅

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## Completed Modules

### 1. Authentication Infrastructure
- ✅ JWT Service (access token + refresh token)
- ✅ Password Hasher (bcrypt, cost=12)
- ✅ Session Store (Redis-based)
- ✅ Email Service (SMTP with templates)

### 2. User Authentication Flow
- ✅ User Registration (with email verification)
- ✅ Email Verification
- ✅ User Login (JWT + Session)
- ✅ User Logout (single device / all devices)
- ✅ Password Reset (email-based)

### 3. Workspace Management
- ✅ Create Workspace
- ✅ Invite Members (with email invitation)
- ✅ Accept / Decline Invitation
- ✅ Remove Members
- ✅ Leave Workspace
- ✅ Update Member Role
- ✅ List Workspaces (user's all workspaces)
- ✅ Get Workspace Detail
- ✅ List Members

### 4. Permission System
- ✅ Permission Checker (role-based access control)
- ✅ Role Permissions Mapping (Owner/Admin/Member/Viewer)
- ✅ Permission Constants (workspace/member/project/asset)

### 5. Subscription Management
- ✅ Upgrade Subscription (Free→Pro→Enterprise)
- ✅ Cancel Subscription (downgrade to Free)
- ✅ Auto-configure quotas based on plan

### 6. Quota System
- ✅ Quota Checker (project count + storage usage)
- ✅ Quota Status (usage percentage)
- ✅ Warning Levels (normal/warning/critical/exceeded)
- ✅ Update Storage Usage

### 7. Repository Layer
- ✅ UserRepository (interface + InMemory)
- ✅ WorkspaceRepository (interface + InMemory)
- ✅ WorkspaceMemberRepository (interface + InMemory)
- ✅ WorkspaceInvitationRepository (interface + InMemory)
- ✅ ProjectRepository (interface only, for quota check)

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## Remaining Tasks (46/68)

### High Priority
- [ ] API Routes Integration (FastAPI)
- [ ] Database Migration Scripts (PostgreSQL)
- [ ] PostgreSQL Repository Implementation
- [ ] API Documentation (Swagger)

### Medium Priority
- [ ] Frontend Integration Preparation
- [ ] Error Handling & Validation Middleware
- [ ] Rate Limiting
- [ ] Logging & Monitoring

### Low Priority
- [ ] Payment Integration (Stripe/Alipay)
- [ ] Webhook Handlers
- [ ] Admin Dashboard
- [ ] Analytics & Metrics

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## Next Steps

1. **API Routes** - Implement FastAPI routes for all use cases
2. **Database** - PostgreSQL repositories and migration scripts
3. **Testing** - Integration tests for API endpoints
4. **Deployment** - Update deployment configuration
5. **Documentation** - API documentation and user guides

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**Last Updated:** 2026-06-17 07:27 GMT+8
