#!/bin/sh

cleanup() {
  [ -n "${NVM_DIR}" ] && [ -d "${NVM_DIR}" ] && rm -rf "${NVM_DIR}"
  unset -f die cleanup
  unset NVM_DIR NVM_INSTALL_LOCK version lock
}

die() { echo "$@" ; cleanup ; exit 1; }

: nvm.sh
\. ../../../nvm.sh

type nvm_release_install_lock > /dev/null 2>&1 || die 'nvm_release_install_lock is not available'

NVM_DIR="$(mktemp -d)"
[ -n "${NVM_DIR}" ] || die 'unable to create temp NVM_DIR'
version='v20.0.0'
lock="$(nvm_cache_dir)/locks/$(nvm_install_lock_name "${version}")"

# Releasing when nothing is held is a no-op that succeeds.
unset NVM_INSTALL_LOCK
nvm_release_install_lock || die 'releasing with no lock held should succeed'

# After acquiring, releasing removes the lock directory and clears the marker.
nvm_acquire_install_lock "${version}" || die 'setup: acquire failed'
[ -d "${lock}" ] || die 'setup: lock dir should exist after acquire'
nvm_release_install_lock || die 'release should succeed'
[ ! -d "${lock}" ] || die 'release should remove the lock directory'
[ -z "${NVM_INSTALL_LOCK-}" ] || die 'release should clear NVM_INSTALL_LOCK'

# Releasing again is a harmless no-op.
nvm_release_install_lock || die 'a second release should be a no-op'

cleanup