#!/usr/bin/env bash
# Publish a built docs channel to the web root.
# Usage: publish-docs.sh <release|nightly> [-d docroot] [-w www_root] [-s site_slug]
# Env: DOCROOT (default target/doc), WWW_ROOT (default /srv/www),
#      SITE_SLUG (default coursebank).
# Flags, if given, override the corresponding env var / default.
set -euo pipefail

usage() {
  echo "Usage: $0 <release|nightly> [-d docroot] [-w www_root] [-s site_slug]" >&2
  exit 1
}

channel="${1:?usage: publish-docs.sh <release|nightly> [-d docroot] [-w www_root] [-s site_slug]}"
shift

docroot="${DOCROOT:-target/doc}"
www_root="${WWW_ROOT:-/srv/www}"
site_slug="${SITE_SLUG:-coursebank}"

while getopts "d:w:s:" opt; do
  case "$opt" in
    d) docroot="$OPTARG" ;;
    w) www_root="$OPTARG" ;;
    s) site_slug="$OPTARG" ;;
    *) usage ;;
  esac
done

dest="${www_root}/${site_slug}/${channel}"
mkdir -p "$dest"
rsync -a --delete "$docroot/" "$dest/"
echo "published $docroot -> $dest"