CEN - Camera Event Notifier (CLI)

MVP: Detect motion via Razer webcam and email a notification with snapshot using Gmail OAuth.

Features

• CLI-based: cen login, cen monitor, cen test-email
• Google OAuth via browser (Continue with Google) and token persistence
• Motion detection using OpenCV; threshold + area filtering
• Dockerized; logs to stdout

Quickstart

1. Python 3.10+
2. pip install -e .
3. cen login to open browser and authenticate Gmail
4. cen test-email --to you@example.com
5. cen monitor --device-index 0 --sensitivity 500 --min-interval-seconds 60 --to you@example.com

Environment

• Set required env vars before running:
  • GOOGLE_CLIENT_ID
  • GOOGLE_CLIENT_SECRET
• Optional:
  • GMAIL_SENDER (defaults to authenticated account)
  • CEN_TOKEN_STORAGE (keyring or file) default: keyring

No additional config files are created by default. Tokens are stored in OS keyring unless CEN_TOKEN_STORAGE=file.

Docker

Build and run:

# build
docker build -t cen:latest .

# Option A: Host login (recommended for Windows) – opens your browser automatically
cen login --login-hint "$env:GMAIL_LOGIN_HINT"  # set to your Gmail address

# Optionally export token JSON to feed into Compose env (avoids keyring in container)
cen export-token > token.json
setx CEN_GMAIL_TOKEN_JSON "$(Get-Content token.json -Raw)"

# Option B: In-container login (headless) – copies a URL, paste the code back
# docker compose run --rm cen-cli cen login --console --no-open-browser

# Linux camera via Compose (maps /dev/video0) – requires CEN_GMAIL_TOKEN_JSON or keyring in container
setx CEN_TO you@example.com
setx GOOGLE_CLIENT_ID your_client_id
setx GOOGLE_CLIENT_SECRET your_client_secret
# For Windows, monitor is best run on host due to camera limitations in Docker Desktop

docker compose run --rm cen-cli cen test-email --to %CEN_TO%
# Linux only (camera mapping):
docker compose run --rm --profile linuxCamera cen-monitor

Notes:

• On Windows with Razer Kiyo, Docker Desktop cannot access the webcam directly. Run cen monitor on the host:

  .\.venv\Scripts\cen monitor --to you@example.com --snapshot

• For containers, prefer providing CEN_GMAIL_TOKEN_JSON to avoid keyring dependencies.