Lagomare Gates

A web-based gate access management and control system. Authorized users can remotely open physical car and pedestrian gates via a mobile-friendly PWA. An admin dashboard provides full management of gates, access codes, and users.

Features

• Keypass authentication — users authenticate with an access code; each keypass can have a per-gate allowlist and an optional expiration date
• Remote gate control — integrates with AVConnect to trigger gate macros
• Role-based admin panel — two roles (admin, manager) with different permission levels
• Access audit log — every open attempt is logged with timestamp, keypass, gate, IP, and result; filterable and paginated
• Keypass QR codes — generate a scannable QR code for each keypass; scanning opens the PWA and logs in automatically
• Keypass code options — choose character set (alphanumeric, alpha, numeric, or a 4-word passphrase) and length when auto-generating codes
• Telegram notifications — optional push notifications to a Telegram group whenever a gate is opened
• Progressive Web App — installable on mobile devices with offline caching

Tech Stack

Layer	Technology
Backend	FastAPI + Uvicorn
ORM	SQLAlchemy
Database	SQLite
Auth	JWT (HS256) + bcrypt
Credential storage	Fernet symmetric encryption
Gate integration	AVConnect HTTP API
Notifications	Telegram Bot API
QR generation	qrcode + Pillow
Frontend	Vanilla JS PWA

Project Structure

src/
├── main.py               # App entry point, startup, static file serving
├── core/
│   ├── auth.py           # JWT creation/verification, password hashing
│   ├── config.py         # Settings loaded from environment variables
│   ├── database.py       # SQLAlchemy models and DB initialization
│   ├── dependencies.py   # FastAPI dependency injection (auth guards)
│   └── schemas.py        # Pydantic request/response schemas
├── routers/
│   ├── auth.py           # POST /api/auth/admin, POST /api/auth/keypass
│   ├── gates.py          # User-facing gate list and open endpoints
│   ├── keypasses.py      # Admin keypass CRUD + QR code generation
│   ├── admins.py         # Admin user management
│   ├── credentials.py    # AVConnect credential management
│   ├── stats.py          # Access log / statistics (paginated, filtered)
│   └── telegram.py       # Telegram notification configuration
├── services/
│   ├── avconnect.py      # AVConnect session management and macro execution
│   ├── gates.py          # Gate open orchestration
│   └── telegram.py       # Telegram Bot API client
└── static/               # Frontend PWA (index.html, admin.html, JS, CSS)
data/
└── gates.db              # SQLite database (auto-created on first run)

API Endpoints

Authentication

Method	Endpoint	Description
POST	/api/auth/admin	Admin login — returns JWT
POST	/api/auth/keypass	Keypass login — returns JWT

User (keypass token required)

Method	Endpoint	Description
GET	/api/gates	List gates accessible to the authenticated keypass
POST	/api/gates/{gate_id}/open	Open a gate

Admin — Gates (manager+)

Method	Endpoint	Description
GET	/api/admin/gates	List all gates
POST	/api/admin/gates	Create a gate (admin only)
PUT	/api/admin/gates/{gate_id}	Update a gate (admin only)
DELETE	/api/admin/gates/{gate_id}	Delete a gate (admin only)
POST	/api/admin/gates/{gate_id}/open	Manually open a gate

Admin — Keypasses (manager+)

Method	Endpoint	Description
GET	/api/admin/keypasses	List all keypasses
POST	/api/admin/keypasses	Create a keypass
PATCH	/api/admin/keypasses/{kp_id}	Update a keypass
DELETE	/api/admin/keypasses/{kp_id}	Revoke a keypass
GET	/api/admin/keypasses/{kp_id}/qr	Download QR code PNG for a keypass

Admin — Users (admin only)

Method	Endpoint	Description
GET	/api/admin/admins	List admin users
POST	/api/admin/admins	Create an admin user
DELETE	/api/admin/admins/{username}	Delete an admin user
PATCH	/api/admin/admins/{username}/password	Change password

Admin — AVConnect Credentials (admin only)

Method	Endpoint	Description
GET	/api/admin/credentials	View stored credentials
PUT	/api/admin/credentials	Create or update credentials
GET	/api/admin/credentials/mock	Get mock mode status
PUT	/api/admin/credentials/mock	Enable or disable mock mode

Admin — Statistics (manager+)

Method	Endpoint	Description
GET	/api/admin/stats	Paginated, filtered access log

Query parameters: gate_id, keypass_code (partial match), success (bool), date_from, date_to, page (default 1), page_size (default 50, max 200).

Admin — Telegram Notifications (admin only)

Method	Endpoint	Description
GET	/api/admin/telegram	Get current Telegram configuration
PUT	/api/admin/telegram	Save bot token and chat ID
POST	/api/admin/telegram/test	Send a test message

Configuration

All settings are read from environment variables (centralised in src/core/config.py).

Security

Variable	Default	Description
SECRET_KEY	(required)	JWT signing key and Fernet encryption key. The application will refuse to start if this is not set. Use a long random string (openssl rand -hex 32).

Admin seed account

Variable	Default	Description
ADMIN_USERNAME	admin	Username for the initial admin account created on first run.
ADMIN_PASSWORD	(none)	Password for the initial admin account. If unset, no seed account is created. Minimum 12 characters.

Server

Variable	Default	Description
APP_PORT	8000	HTTP port the server listens on.

Database

Variable	Default	Description
DATABASE_URL	sqlite:///data/gates.db	SQLAlchemy database URL.

Network / reverse proxy

Variable	Default	Description
CORS_ORIGINS	(empty — no cross-origin requests)	Comma-separated list of allowed CORS origins, e.g. https://gates.example.com.
TRUSTED_PROXY_IPS	127.0.0.1	Comma-separated list of reverse-proxy IPs whose X-Forwarded-For header is trusted for client IP resolution.

Logging

Variable	Default	Description
LOG_LEVEL	INFO	Logging verbosity. One of DEBUG, INFO, WARNING, ERROR, CRITICAL.
LOG_FILE	/var/log/lagomaregates.log	Path to the rotating log file (10 MB, 5 backups). Set to an empty string to disable file logging.

Running with Docker Compose

# Copy and edit the compose file to set your SECRET_KEY
docker compose up -d

The default docker-compose.yml starts the service on port 8000. Set a strong SECRET_KEY and, optionally, ADMIN_USERNAME / ADMIN_PASSWORD before deploying.

The ./data directory is mounted into the container so the SQLite database persists across restarts.

Running Locally

python -m venv venv
source venv/bin/activate
pip install -r requirements.txt

export SECRET_KEY="$(openssl rand -hex 32)"
export ADMIN_USERNAME="admin"
export ADMIN_PASSWORD="changeme-at-least-12"

uvicorn src.main:app --port 8000

The application is then available at:

• User interface — http://localhost:8000/
• Admin dashboard — http://localhost:8000/admin

AVConnect Integration

Gates are controlled through the AVConnect platform. Each gate is mapped to an AVConnect macro ID. When a gate open request is received, the service:

1. Authenticates with AVConnect using the stored credentials (session is cached in the database)
2. Executes the configured macro for the gate

Credentials (password) are stored encrypted in the database using Fernet symmetric encryption derived from SECRET_KEY.

Mock mode — when enabled via the admin dashboard, gate open requests always succeed without contacting AVConnect. Useful for testing.

Keypass QR Codes

Each active keypass has a QR button in the admin panel. Clicking it generates a PNG QR code that encodes the URL:

https://<your-domain>/?k=<KEYPASS_CODE>

Scanning the code with a phone opens the web app and logs in automatically. If the keypass is expired or revoked, the user is shown an error on the login screen.

Telegram Notifications

Configure a Telegram bot to receive a message in a group or chat every time a gate is opened:

1. Create a bot via @BotFather and copy the token
2. Add the bot to your group and obtain the chat ID (e.g. using @userinfobot)
3. Open Admin → Notifications, enter the token and chat ID, and click Save
4. Use Send test message to verify the setup

Notifications are sent in a background thread and never block the gate open response. Failures are logged as warnings and do not affect gate operation.

Roles

Role	Permissions
admin	Full access — all endpoints including gate/user/credential/notification management
manager	Gate open, keypass management, statistics — cannot manage admin users, AVConnect credentials, gate configuration, or Telegram settings