Automatically setup Stripe webhooks with signing secrets in dev

application.rb

# …
Dotenv::Rails.files.unshift(".env.stripe-webhooks.local") if Rails.env.development? # Dotenv technically optional… You'd just need to parse this yourself without it.
# …

setup-stripe-webhooks

#!/usr/bin/env bash

set -euo pipefail

# Help flag check
if [[ "${1:-}" == "--help" || "${1:-}" == "-h" ]]; then
    echo "Usage: $0 [host] [--skip-memory] [--skip-restart]"
    echo
    echo "Options:"
    echo "  host           The development host (default: localhost:3000)"
    echo "  --skip-memory  Don't prompt to remember the host"
    echo "  --skip-restart Skip restarting Rails server"
    echo "  --help, -h     Show this help message"
    exit 0
fi

WEBHOOK_PATH="/pay/webhooks/stripe"
MEMORY_FILE="tmp/.stripe-webhook-host"
ENV_FILE=".env.stripe-webhooks.local"
SKIP_MEMORY=false
SKIP_RESTART=false

# Check for flags
if [[ "${@:-}" =~ "--skip-memory" ]]; then
    SKIP_MEMORY=true
    # Remove --skip-memory from arguments
    set -- "${@/--skip-memory/}"
fi

if [[ "${@:-}" =~ "--skip-restart" ]]; then
    SKIP_RESTART=true
    # Remove --skip-restart from arguments
    set -- "${@/--skip-restart/}"
fi

# Try to load remembered host
if [[ -f "$MEMORY_FILE" && -z "${1:-}" ]]; then
    REMEMBERED_HOST=$(cat "$MEMORY_FILE")
    DEV_HOST="${REMEMBERED_HOST}"
else
    DEV_HOST="${1:-localhost:3000}"
    
    # Ask to remember the host if it was provided and we're not skipping memory
    if [[ -n "${1:-}" && "$SKIP_MEMORY" == false ]]; then
        read -p "Remember this host for next time? (y/N) " -n 1 -r
        echo
        if [[ $REPLY =~ ^[Yy]$ ]]; then
            mkdir -p tmp
            echo "$DEV_HOST" > "$MEMORY_FILE"
            echo "Saved host preference to $MEMORY_FILE"
        fi
    fi
fi

WEBHOOK_TARGET="http://${DEV_HOST}${WEBHOOK_PATH}"

# Check if stripe CLI is installed
if ! command -v stripe &> /dev/null; then
    echo "stripe CLI is not installed. Please install it first:"
    echo "brew install stripe/stripe-cli/stripe"
    exit 1
fi

# Check if Rails server is running
if ! curl -s "http://${DEV_HOST}" > /dev/null; then
    echo "Rails server not running at ${DEV_HOST}"
    echo "Please start the Rails server first with: bin/rails server"
    exit 1
fi

# Get the webhook signing secret from stripe CLI
echo "Starting stripe listener to get webhook signing secret..."
SIGNING_SECRET=$(stripe listen --print-secret)

if [ -z "$SIGNING_SECRET" ]; then
    echo "Failed to get webhook signing secret"
    exit 1
fi

# Update the env file
echo "STRIPE_SIGNING_SECRET=$SIGNING_SECRET" > "$ENV_FILE"
echo "Updated ${ENV_FILE} with new signing secret"

# Restart Rails to pick up the new environment variables
if [[ "$SKIP_RESTART" == false ]]; then
    echo "Restarting Rails server..."
    bin/rails restart
fi

# Start the stripe listener
echo "Starting stripe webhook listener..."
echo "Forwarding webhooks to: $WEBHOOK_TARGET"
stripe listen --forward-to "$WEBHOOK_TARGET"