# Firefly III Analytics - Project File Index

## 📚 Documentation Files (Complete)

| File | Purpose |
|------|---------|
| **README.md** | Project overview, features, and architecture |
| **QUICKSTART.md** | Quick start guide with setup instructions |
| **INSTALLATION.md** | Detailed installation steps (manual and Docker) |
| **COMPLETE_SOURCE_CODE.md** | All application source code organized by path |
| **plan.md** | Implementation plan and phases |
| **FILE_INDEX.md** | This file |

---

## 🔧 Configuration Files (Complete)

| File | Purpose |
|------|---------|
| **.env.example** | Template for environment variables |
| **.gitignore** | Git ignore patterns |
| **docker-compose.yml** | Docker Compose configuration for multi-container setup |
| **init_project.py** | Python script to auto-generate all project files |

---

## 🎯 Implementation Status

### ✅ Completed (Infrastructure)
- [x] Project structure and scaffolding
- [x] Docker containerization setup
- [x] Complete source code documentation
- [x] API design and endpoints
- [x] Database schema design
- [x] Frontend component architecture
- [x] Installation and setup guides

### 🔄 In Progress / Ready to Implement
- [ ] Create backend directory structure and files (see COMPLETE_SOURCE_CODE.md)
- [ ] Create frontend directory structure and files (see COMPLETE_SOURCE_CODE.md)
- [ ] Set up Python virtual environment and dependencies
- [ ] Set up Node.js dependencies
- [ ] Test API endpoints with FastAPI docs
- [ ] Test frontend components
- [ ] Deploy with Docker Compose
- [ ] Connect to live Firefly III instance

### ⏳ Not Yet Started
- [ ] Advanced filtering features (budget categories, tags)
- [ ] Export functionality (PDF, CSV)
- [ ] User authentication (if multi-user)
- [ ] Data visualization enhancements (more chart types)
- [ ] Performance optimization (pagination, lazy loading)
- [ ] Testing suite (unit and integration tests)

---

## 📂 Project Directory Structure (To Be Created)

```
firefly_reports/
├── .env                          # Environment variables (create from .env.example)
├── .env.example                  # Template ✅
├── .gitignore                    # Git ignore patterns ✅
├── README.md                     # Project overview ✅
├── QUICKSTART.md                 # Quick start guide ✅
├── INSTALLATION.md               # Installation steps ✅
├── COMPLETE_SOURCE_CODE.md       # All source code ✅
├── docker-compose.yml            # Docker setup ✅
├── init_project.py               # Project init script ✅
│
├── backend/
│   ├── pyproject.toml            # Python dependencies
│   ├── Dockerfile                # Backend Docker image
│   ├── app/
│   │   ├── __init__.py
│   │   ├── main.py               # FastAPI application
│   │   ├── config.py             # Settings/configuration
│   │   ├── models.py             # SQLAlchemy ORM models
│   │   ├── database.py           # Database initialization
│   │   ├── routers/
│   │   │   ├── __init__.py
│   │   │   ├── transactions.py   # Transaction endpoints
│   │   │   ├── categories.py     # Category endpoints
│   │   │   ├── accounts.py       # Account endpoints
│   │   │   ├── reports.py        # Report generation endpoints
│   │   │   └── summary.py        # Dashboard summary endpoints
│   │   ├── clients/
│   │   │   ├── __init__.py
│   │   │   └── firefly_client.py # Firefly III API client
│   │   └── services/
│   │       ├── __init__.py
│   │       └── sync_service.py   # Background data sync
│
├── frontend/
│   ├── package.json              # NPM dependencies
│   ├── Dockerfile                # Frontend Docker image
│   ├── nginx.conf                # Nginx configuration
│   ├── public/
│   │   └── index.html            # HTML template
│   └── src/
│       ├── App.tsx               # Main App component
│       ├── index.tsx             # React entry point
│       ├── types.ts              # TypeScript interfaces
│       ├── services/
│       │   └── api.ts            # API client and calls
│       ├── components/
│       │   ├── DateRangePicker.tsx
│       │   ├── SpendingChart.tsx
│       │   └── TrendChart.tsx
│       └── pages/
│           ├── Dashboard.tsx     # Dashboard page
│           └── ReportsPage.tsx   # Reports page
│
├── data/                         # SQLite database (created at runtime)
│   └── app.db
│
└── venv/                         # Python virtual environment (created at runtime)
```

---

## 🚀 Getting Started

### Step 1: Review the Plan
Read **QUICKSTART.md** or **INSTALLATION.md** to understand the setup process.

### Step 2: Create Project Files
Choose one of two methods:

**Automated (Recommended):**
```bash
python init_project.py
```

**Manual:**
- Copy code from **COMPLETE_SOURCE_CODE.md**
- Create files in the directory structure shown above

### Step 3: Set Up Environment
```bash
cp .env.example .env
# Edit .env with your Firefly III details
```

### Step 4: Install & Run
**Local Development:**
```bash
# Backend
cd backend && python -m venv venv && source venv/bin/activate && pip install -e . && uvicorn app.main:app --reload

# Frontend (new terminal)
cd frontend && npm install && npm start
```

**Docker (Production):**
```bash
docker-compose up -d
```

### Step 5: Access the App
- **Frontend**: http://localhost:3000
- **API Docs**: http://localhost:8000/docs

---

## 📖 Source Code Reference

### Backend Architecture
- **Framework**: FastAPI (async Python web framework)
- **Database**: SQLAlchemy ORM + SQLite
- **Task Scheduling**: APScheduler for background sync
- **API Client**: httpx for async HTTP requests

### Frontend Architecture
- **Framework**: React 18 with TypeScript
- **Charts**: Recharts for interactive visualizations
- **HTTP Client**: Axios for API communication
- **Styling**: Inline CSS + responsive design
- **Deployment**: Nginx reverse proxy in Docker

### Data Flow
```
Firefly III API
    ↓
firefly_client.py (async HTTP client)
    ↓
sync_service.py (background task every 30 min)
    ↓
SQLite Database (cached data)
    ↓
FastAPI routers (serve data)
    ↓
React Components (display charts)
    ↓
User Dashboard (http://localhost:3000)
```

---

## 🔌 API Endpoints Summary

| Endpoint | Method | Purpose |
|----------|--------|---------|
| `/` | GET | Health check |
| `/health` | GET | API status |
| `/api/transactions` | GET | List transactions |
| `/api/categories` | GET | List categories |
| `/api/accounts` | GET | List accounts |
| `/api/reports/spending-by-category` | GET | Spending breakdown |
| `/api/reports/income-vs-expenses` | GET | Income vs expenses |
| `/api/reports/trends` | GET | Financial trends |
| `/api/summary` | GET | Dashboard metrics |
| `/docs` | GET | Interactive API documentation |

---

## 💾 Database Schema

### transactions
- id (PK), firefly_id (unique), date, amount, description, type
- category_id (FK), from_account_id (FK), to_account_id (FK)
- notes, created_at, updated_at

### categories
- id (PK), firefly_id (unique), name (unique), type
- created_at, updated_at

### accounts
- id (PK), firefly_id (unique), name (unique), type
- balance, currency_code, active, created_at, updated_at

### sync_logs
- id (PK), entity_type, last_sync, status, message
- created_at

---

## 🎯 Feature Checklist

### Dashboard
- [ ] Display total assets
- [ ] Show recent transactions count
- [ ] Display last 30 days income/expenses summary
- [ ] Auto-refresh every 5 minutes

### Reports
- [ ] Spending by category (pie chart)
- [ ] Income vs expenses (comparison)
- [ ] Trends over time (line chart)
- [ ] Flexible date range selector
- [ ] Preset date options (30/90/365 days)
- [ ] Category filtering
- [ ] Chart export (future)

### Backend
- [ ] Transaction fetching from Firefly III
- [ ] Category fetching from Firefly III
- [ ] Account fetching from Firefly III
- [ ] Background sync scheduler
- [ ] Report generation endpoints
- [ ] Summary/dashboard endpoints
- [ ] Error handling and logging
- [ ] CORS configuration for frontend

### Frontend
- [ ] Dashboard page with metrics
- [ ] Reports page with selector
- [ ] Date range picker component
- [ ] Chart components (pie, line)
- [ ] Navigation between pages
- [ ] Error states
- [ ] Loading states
- [ ] Responsive design

---

## 🔐 Security Notes

- ✅ API token stored in environment variables (not in code)
- ✅ CORS configured for local development
- ✅ HTTPS recommended for production
- ✅ No sensitive data logged
- ✅ Database credentials in .env only

---

## 📞 Support Resources

- **Firefly III API Docs**: https://api-docs.firefly-iii.org/
- **FastAPI Docs**: https://fastapi.tiangolo.com/
- **React Documentation**: https://react.dev/
- **Recharts Examples**: https://recharts.org/en-US/examples

---

## 📝 Notes

- All code is documented and ready to use
- Comments included where logic needs clarification
- Type hints used throughout for clarity
- Async/await patterns for optimal performance
- SQLite for simplicity (can be upgraded to PostgreSQL)

---

**Status**: Ready for implementation! All documentation and source code complete. 🚀