#! /usr/bin/env nix-shell
#! nix-shell -i bash -p asciidoctor

shopt -s nullglob
set -euo pipefail

if [[ -z ${1-} ]]; then
    printf >&2 'usage: tools/build-docs <out-dir>\n'
    exit 2
fi

out=$1
shift

render() {
    asciidoctor --warnings \
        -a linkcss -a nofooter -a webfonts! -a docinfo=shared,private \
        --destination-dir="$out" "$@"
}

# ugh, relative paths
render -a docinfodir=doc/meta -a root=index.html "$@" \
  --out-file=index.html README.adoc
render -a docinfodir=doc/meta -a root=index.html "$@" COPYING-*.adoc
render -a docinfodir=meta -a root=index.html "$@" doc/*.adoc
cp doc/meta/*.{png,gif,jpg} "$out"