# Reverse proxy template for a REAL deployment (real domain + automatic HTTPS).
# Not needed for local testing against localhost:4650 — this is the step you
# take once you're actually putting this in front of a public domain.
#
# Usage:
#   1. Point 3 DNS records at this machine: your app domain, your api
#      subdomain, and your cdn subdomain (matching FRONTEND_URL / APP_URL /
#      S3_PUBLIC_URL in apps/api/.env and VITE_APP_URL / VITE_API_URL in
#      apps/web/.env). Either edit the three domains below directly, or set
#      the FRONTEND_DOMAIN / API_DOMAIN / CDN_DOMAIN env vars before running
#      Caddy and leave the placeholders as-is.
#   2. Install Caddy (https://caddyserver.com/docs/install) directly on this
#      host — it is NOT part of docker-compose.yml, so it binds host ports
#      80/443 directly and reverse-proxies to the containers' published
#      ports below.
#   3. Copy this file to /etc/caddy/Caddyfile (or wherever your install
#      expects it).
#   4. sudo systemctl reload caddy   (or: caddy run --config Caddyfile)
#
# Caddy issues and renews Let's Encrypt certificates automatically the first
# time each domain is requested — no manual cert steps needed.

{
	servers {
		# Only matters once something else (Cloudflare, another load balancer)
		# sits in front of this Caddy instance and forwards its own
		# X-Forwarded-For — trusts that header from private/loopback ranges so
		# {http.request.header.X-Real-IP} below reflects the real visitor, not
		# whatever's immediately upstream of Caddy. Harmless no-op if Caddy is
		# the outermost edge (the common case for a single self-hosted box).
		trusted_proxies static private_ranges
		client_ip_headers X-Forwarded-For X-Real-IP
	}
}

{$FRONTEND_DOMAIN:yourdomain.com} {
	encode gzip zstd

	reverse_proxy localhost:4650 {
		header_up X-Real-IP {http.request.header.X-Real-IP}
	}

	handle_errors {
		respond "Frontend temporarily unavailable" 502
	}
}

{$API_DOMAIN:api.yourdomain.com} {
	encode gzip zstd

	# server.js already sets `app.set('trust proxy', 1)` for the rate
	# limiter — Caddy's reverse_proxy adds X-Forwarded-For automatically, so
	# real client IPs reach express-rate-limit without extra config here.
	reverse_proxy localhost:3024 {
		header_up X-Real-IP {http.request.header.X-Real-IP}
	}

	handle_errors {
		respond "API temporarily unavailable" 502
	}
}

{$CDN_DOMAIN:cdn.yourdomain.com} {
	reverse_proxy localhost:3900 {
		header_up X-Real-IP {http.request.header.X-Real-IP}
	}
}