# NextReceipt

**AI-Powered Receipt Saver for Warranty & Returns**

Save receipts from private purchases to track warranty coverage and return windows. Upload your receipt, get AI-extracted data, and never lose track of your guarantees again.

## Features

- **Passwordless login** via email OTP
- **AI receipt extraction** (Gemini / OpenAI-compatible)
- **Warranty tracking** — save product name, store, price, warranty months, return window
- **Receipt image storage** with UUID filenames
- **Mobile-first PWA** — camera capture, installable, works offline
- **HTMX-powered UI** — no SPA framework, server-driven
- **Pure Go, no CGO** — single static binary

## Quick Start

```bash
cp .env.example .env
# Edit .env with your credentials
go run main.go
```

Open http://localhost:8080

## Tech Stack

- **Go 1.23+** (pure Go, no CGO)
- **SQLite** via modernc.org/sqlite
- **HTMX 1.9.10** + vanilla CSS
- **chi v5** router

## Configuration

| Variable | Purpose |
|----------|---------|
| `AI_PROVIDER` | `gemini` or `openai` |
| `GEMINI_API_KEY` | Google Gemini API key |
| `OPENAI_API_KEY` | OpenAI-compatible API key |
| `AI_MODEL` | Model name (for OpenAI/Ollama) |
| `AI_BASE_URL` | API base URL |
| `SMTP_HOST/PORT/USER/PASS` | SMTP credentials (for OTP emails) |
| `PORT` | Web server port (default 8080) |

## Install (systemd)

```bash
bash install.sh
```

Updates: `bash install.sh -update`

## License

MIT