custhook

GitHub Marketplace webhook handler for reviewGOOSE. Receives marketplace_purchase events and sends email notifications.

Requirements

• Go 1.21+
• ko for deployment

Environment Variables

Variable	Required	Description
WEBHOOK_SECRET	Yes	GitHub webhook secret for HMAC-SHA256 verification
BREVO_API_KEY	No	Brevo API key (uses mock logger if unset)
PORT	No	Server port (default: 8080)
MAIL_FROM	No	Sender email (default: noreply@reviewGOOSE.dev)
MAIL_NAME	No	Sender name (default: reviewGOOSE)

Endpoints

• GET / - Health check
• POST /webhook - GitHub webhook receiver

Development

make test    # Run tests with race detection
make lint    # Run linters
make build   # Build binary

Deployment

make deploy  # Deploy to Cloud Run via ko

Requires gcloud CLI configured with appropriate project permissions.