#!/bin/bash

set -o errexit -o nounset -o pipefail
shopt -s dotglob extglob globstar

if [[ $# -eq 1 ]]; then
    fd=$1
else
    touch lock
    exec {fd}< lock
fi

if ! flock -n $fd; then
    echo deploy_static already locked >&2
    exit 1
fi

export PATH="$PWD/node_modules/.bin:$PATH"

rm -rf nginx-tmp
cp -a nginx nginx-tmp

rm -rf static-tmp
cp -a /usr/share/webapps/element static-tmp
cp --remove-destination webapps/element/config.json static-tmp/config.json

brotli_k() {
    brotli -k "$@"
}
export -f brotli_k

zopfli_preserve_time() {
    zopfli "$1"
    touch -r "$1" "$1.gz"
}
export -f zopfli_preserve_time

find static-tmp -regex '.+\.\(css\|html\|ico\|js\|json\|map\|svg\|txt\|wasm\|xml\)' |
    parallel -q ::: brotli_k zopfli_preserve_time :::: -