#!/bin/sh
set -eu

if [ "$#" -ne 1 ] || [ -z "$1" ]; then
    echo "usage: $0 GIT_COMMIT" >&2
    exit 2
fi

commit=$1
root=/opt/ces-controller
release="$root/releases/$commit"
temporary_link="$root/.current.$$"

install -d -m 700 "$root" "$root/releases" "$release"
install -m 700 controller.py "$release/controller.py"
install -m 600 README.md "$release/README.md"
printf '%s\n' "$commit" > "$release/VERSION"
chmod 600 "$release/VERSION"

ln -s "$release" "$temporary_link"
mv -Tf "$temporary_link" "$root/current"
install -m 755 scripts/ces-controller /usr/local/bin/ces-controller

echo "deployed_controller=$commit"