#!/bin/bash

set -euo pipefail

dir=$1
test_tmpdir=$(pwd)

cd ${dir}
env PYTHONUNBUFFERED=1 setsid python -m SimpleHTTPServer 0 >${test_tmpdir}/httpd-output &
child_pid=$!

for x in $(seq 50); do
    sed -e 's,Serving HTTP on 0.0.0.0 port \([0-9]*\) \.\.\.,\1,' < ${test_tmpdir}/httpd-output > ${test_tmpdir}/httpd-port
    if ! cmp ${test_tmpdir}/httpd-output ${test_tmpdir}/httpd-port 1>/dev/null; then
        break
    fi
    sleep 0.1
done
port=$(cat ${test_tmpdir}/httpd-port)
echo "http://127.0.0.1:${port}" > ${test_tmpdir}/httpd-address
echo "$child_pid" > ${test_tmpdir}/httpd-pid