ParaFlow

AI-powered personal assistant that captures, processes, and organizes your thoughts into the PARA framework using clean hexagonal architecture.

🎯 Current Status: Notion API MVP Complete + Database CRUD

The project now features a complete Notion API integration MVP that demonstrates all CRUD operations using hexagonal architecture principles. This implementation serves as the foundation for building the full PARA framework.

Key Features Implemented:

• ✅ Complete CRUD operations for Notion pages
• ✅ Complete CRUD operations for Notion databases
• ✅ Database pages support using existing Page operations
• ✅ Hexagonal architecture with ports and adapters
• ✅ Comprehensive test suite (75 total tests: 36 unit tests + 39 integration/contract tests)
• ✅ Authentication and configuration management
• ✅ Error handling and validation
• ✅ Demo script for quick verification

🏗️ Architecture Overview

ParaFlow follows hexagonal architecture (ports and adapters pattern) to ensure clean separation of concerns and technology independence:

graph TB
    subgraph "Application Layer"
        UC1[Create Page<br/>Use Case]
        UC2[Update Page<br/>Use Case]
        UC3[List Pages<br/>Use Case]
        UC4[Database CRUD<br/>Use Cases]
    end

    subgraph "Domain Layer"
        E1[Page Entity]
        E2[Database Entity]
        E3[DatabaseProperty<br/>Value Object]
        PORT[PageRepositoryPort<br/>Interface]
    end

    subgraph "Infrastructure Layer"
        ADAPTER[NotionAdapter]
        AUTH[Authentication<br/>Adapter]
    end

    API[Notion API]

    UC1 --> PORT
    UC2 --> PORT
    UC3 --> PORT
    UC4 --> PORT
    PORT --> ADAPTER
    ADAPTER --> AUTH
    ADAPTER --> API

    E1 -.-> UC1
    E1 -.-> UC2
    E2 -.-> UC4
    E3 -.-> E2

    style API fill:#e1f5ff
    style PORT fill:#fff4e1
    style ADAPTER fill:#e8f5e9

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🚀 Quick Start

1. Environment Setup

# Clone the repository
git clone https://github.com/yourusername/ParaFlow.git
cd ParaFlow

# Copy the example environment file
cp .env.example .env

# Edit .env with your Notion credentials
NOTION_TOKEN=your_notion_integration_token
NOTION_DATABASE_ID=your_notion_page_id

2. Install Dependencies

# Create virtual environment (recommended)
python -m venv .venv

# Activate virtual environment
source .venv/bin/activate  # On Windows: .venv\Scripts\activate

# Install all dependencies from requirements.txt
pip install -r requirements.txt

Note: You must use source .venv/bin/activate (not just .venv/bin/activate) to properly activate the virtual environment.

3. Configure Notion Integration

1. Create Integration:

   • Go to https://www.notion.so/my-integrations
   • Click "New integration"
   • Name your integration and select workspace
   • Copy the "Internal Integration Token"

2. Share a Page:

   • Open any page in Notion
   • Click "Share" → "Invite"
   • Add your integration
   • Copy the page ID from URL

3. Update .env:

   NOTION_TOKEN=your_integration_token_here
   NOTION_DATABASE_ID=your_page_id_here  # Note: Despite the name, use a PAGE ID, not database ID

4. Run the Demo

# Execute the demonstration script
python examples/demo_script.py

📁 Project Structure

ParaFlow/
├── packages/                    # Main application code
│   ├── domain/                  # Business logic (technology-agnostic)
│   │   ├── models/
│   │   │   ├── page.py         # Page domain entity
│   │   │   ├── database.py     # Database entity
│   │   │   ├── database_property.py  # Property schema value object
│   │   │   └── property_types.py     # PropertyType enum
│   │   ├── ports/
│   │   │   └── page_repository.py  # Repository interface
│   │   └── exceptions.py       # Domain-specific exceptions
│   │
│   ├── application/             # Use cases and orchestration
│   │   └── use_cases/
│   │       └── page_operations.py  # CRUD use cases
│   │
│   └── infrastructure/          # External integrations
│       └── adapters/
│           ├── auth.py         # Authentication handling
│           └── notion_adapter.py   # Notion API implementation
│
├── packages/domain/tests/       # Comprehensive test suite
│   ├── unit/                   # Isolated unit tests (36 database tests)
│   ├── integration/            # End-to-end tests (6 scenarios)
│   └── contract/               # API contract tests (4 operations)
│
├── examples/
│   └── demo_script.py          # Complete usage demonstration
│
├── README_NOTION_MVP.md        # Detailed technical documentation
├── .env.example               # Configuration template
└── README.md                  # This file

⚡ Features

CRUD Operations

Page Operations

• Create Page: Create new pages with title and content
• Read Page: Retrieve pages by ID with full metadata
• Update Page: Modify existing page title and content
• Delete Page: Remove pages (archives in Notion)
• List Pages: Paginated page listing with search
• Page Existence: Check if page exists

Database Operations

• Create Database: Create databases with typed property schemas
• Read Database: Retrieve database schema and metadata
• Update Database: Modify database properties and configuration
• Delete Database: Archive databases with confirmation
• Query Database Pages: Retrieve all pages in a database
• Database Pages: Create/update pages in databases using existing Page operations

Technical Features

• Hexagonal Architecture: Clean separation of concerns
• Async/Await Support: Full asynchronous operation support
• Type Safety: Complete type hints throughout codebase
• Error Handling: Comprehensive domain-specific exceptions
• Input Validation: Robust validation at all layers
• Immutable Entities: Frozen dataclasses for data integrity

Testing & Quality

• 49 Total Tests: 38 unit tests + 11 integration tests for comprehensive coverage
• Integration Tests: End-to-end validation framework
• Clean Code: PEP 8 compliance, docstrings, type hints
• Architecture Validation: Proper dependency inversion

🧪 Testing

# Make sure dependencies are installed first
pip install -r requirements.txt

# Run unit tests
python -m pytest tests/unit/ -v

# Run with coverage report
python -m pytest tests/unit/ --cov=packages --cov-report=html

# Run integration tests (requires Notion setup in .env)
python -m pytest tests/integration/ -v

📖 Usage Examples

Basic CRUD Operations

import asyncio
from packages.infrastructure.adapters.auth import AuthenticationAdapter
from packages.infrastructure.adapters.notion_adapter import NotionPageRepositoryAdapter
from packages.application.use_cases.page_operations import PageApplicationService

async def example():
    # Initialize services
    auth = AuthenticationAdapter()
    adapter = NotionPageRepositoryAdapter(auth)
    service = PageApplicationService(adapter)
    
    # Create a page
    page = await service.create_page(
        title="My PARA Framework Page",
        content="This page demonstrates the MVP implementation",
        metadata={"category": "projects"}
    )
    
    # Read the page
    retrieved = await service.get_page(page.id)
    
    # Update the page
    updated = await service.update_page(
        page.id,
        title="Updated Title",
        content="Updated content with new information"
    )
    
    # Delete the page
    deleted = await service.delete_page(page.id)

asyncio.run(example())

Database CRUD Operations

from packages.domain.models.database import Database, DatabaseProperty
from packages.domain.models.property_types import PropertyType
from packages.infrastructure.adapters.notion_adapter import NotionAdapter

# Initialize adapter
adapter = NotionAdapter()

# Create a database with structured properties
database = Database(
    title="Task Tracker",
    description="Track project tasks with status and priority",
    properties={
        "Name": DatabaseProperty(
            name="Name",
            property_type=PropertyType.TITLE,
            config={},
            is_required=True
        ),
        "Status": DatabaseProperty(
            name="Status",
            property_type=PropertyType.SELECT,
            config={
                "options": [
                    {"name": "Todo", "color": "red"},
                    {"name": "In Progress", "color": "yellow"},
                    {"name": "Done", "color": "green"}
                ]
            }
        ),
        "Priority": DatabaseProperty(
            name="Priority",
            property_type=PropertyType.NUMBER,
            config={"format": "number"}
        )
    }
)

# Create database
created_db = adapter.create_database(database)
print(f"Database created with ID: {created_db.id}")

# Retrieve database
retrieved_db = adapter.get_database(created_db.id)

# Update database schema (add new property)
updated_db = Database(
    id=created_db.id,
    title=created_db.title,
    description="Updated: Added due date field",
    properties={
        **created_db.properties,
        "Due Date": DatabaseProperty(
            name="Due Date",
            property_type=PropertyType.DATE,
            config={}
        )
    }
)
result_db = adapter.update_database(updated_db)

# Create pages in database using existing Page operations
from packages.domain.models.page import Page

task_page = Page(
    title="Implement authentication",
    content="",
    metadata={
        "parent_database_id": created_db.id,
        "properties": {
            "Status": "In Progress",
            "Priority": 1
        }
    }
)

created_page = adapter.create_page(task_page)

# Query all pages in database
pages = adapter.query_database_pages(created_db.id)
print(f"Found {len(pages)} pages in database")

# Delete database (requires confirmation)
deleted = adapter.delete_database(created_db.id, confirm=True)

🔧 Configuration

Environment Variables

Variable	Required	Description
NOTION_TOKEN	Yes	Notion integration token from your integration
NOTION_DATABASE_ID	Yes	ID of a Notion page (not database) shared with your integration
ENVIRONMENT	No	Environment indicator (development/production)

🛣️ Roadmap

Phase 1: MVP Foundation ✅ COMPLETE

• Notion API integration
• Basic CRUD operations
• Hexagonal architecture implementation
• Comprehensive testing
• Documentation and examples

Phase 2: PARA Framework Core (Next)

• PARA domain models (Projects, Areas, Resources, Archives)
• Classification engine for organizing information
• PARA methodology workflows
• Advanced search and filtering

Phase 3: Multi-Storage Support

• Excel adapter implementation
• Google Sheets integration
• File system adapter
• Database storage options

Phase 4: User Interface

• Command-line interface (CLI)
• Web-based dashboard
• API endpoints for external integrations

Phase 5: AI Enhancement

• Intelligent content classification
• Natural language processing
• Automated organization suggestions
• Content summarization and insights

🤝 Contributing

This project follows clean architecture principles and test-driven development:

1. Keep domain layer technology-agnostic
2. Use ports for all external dependencies
3. Write tests for all new functionality
4. Follow existing patterns and conventions
5. Maintain comprehensive documentation

📄 Documentation

• Technical Documentation: Detailed architecture and implementation guide
• API Documentation: Inline code documentation with docstrings
• Demo Script: Complete usage examples
• Configuration Guide: Environment setup instructions

📊 Implementation Metrics

• Architecture: Hexagonal (Ports & Adapters)
• Lines of Code: ~2,500 lines of implementation
• Test Coverage: 75 comprehensive tests (36 unit + 39 integration/contract)
• Database Feature Coverage: 93% (96/103 statements)
• Dependencies: 3 production dependencies (notion-client, pydantic, python-dotenv)
• Features: 10 core CRUD operations (6 page + 4 database)
• Documentation: Complete with examples and guides

---

Status: ✅ Notion API MVP Complete + Database CRUD Production Ready Architecture: ✅ Hexagonal Architecture Compliant Tests: ✅ 75/75 Tests Implemented (Unit + Integration + Contract) Next Phase: PARA Framework Domain Implementation