#!/bin/sh

cleanup () {
  unset -f make gmake nvm_download nvm_get_os nvm_get_arch nvm_extract_tarball nvm_version_path nvm_get_make_jobs
  rm -rf "${FAKE_TMPDIR-}"
}
die () { echo "$@" ; cleanup ; exit 1; }

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

# Create a fake directory structure for the build
FAKE_TMPDIR="$(mktemp -d)"
mkdir -p "${FAKE_TMPDIR}/files"
touch "${FAKE_TMPDIR}/node-old.tar.gz"
touch "${FAKE_TMPDIR}/node-new.tar.gz"

# Track make invocations
MAKE_CALLS=""

make() {
  MAKE_CALLS="${MAKE_CALLS}make $*
"
  return 1  # Fail to prevent actual build
}

gmake() {
  MAKE_CALLS="${MAKE_CALLS}gmake $*
"
  return 1  # Fail to prevent actual build
}

nvm_download() {
  return 0
}

nvm_get_arch() {
  echo "x64"
}

nvm_extract_tarball() {
  return 0
}

nvm_version_path() {
  echo "${FAKE_TMPDIR}/versions/${1}"
}

nvm_get_make_jobs() {
  NVM_MAKE_JOBS=1
}

# Test 1: Old version (0.6.21) should have SHELL=/bin/sh
MAKE_CALLS=""
NVM_DIR="${FAKE_TMPDIR}"
export NVM_DIR

# Manually test the version check logic
if nvm_version_greater "0.12.0" "0.6.21"; then
  OLD_VERSION_DETECTED="yes"
else
  OLD_VERSION_DETECTED="no"
fi
[ "${OLD_VERSION_DETECTED}" = "yes" ] || die "Expected 0.6.21 to be detected as old version"

# Test 2: New version (0.12.0) should NOT have SHELL=/bin/sh
if nvm_version_greater "0.12.0" "0.12.0"; then
  NEW_VERSION_DETECTED="yes"
else
  NEW_VERSION_DETECTED="no"
fi
[ "${NEW_VERSION_DETECTED}" = "no" ] || die "Expected 0.12.0 to NOT be detected as old version"

# Test 3: Newer version (14.0.0) should NOT have SHELL=/bin/sh
if nvm_version_greater "0.12.0" "14.0.0"; then
  NEWER_VERSION_DETECTED="yes"
else
  NEWER_VERSION_DETECTED="no"
fi
[ "${NEWER_VERSION_DETECTED}" = "no" ] || die "Expected 14.0.0 to NOT be detected as old version"

# Test 4: Edge case version (0.11.99) should have SHELL=/bin/sh
if nvm_version_greater "0.12.0" "0.11.99"; then
  EDGE_VERSION_DETECTED="yes"
else
  EDGE_VERSION_DETECTED="no"
fi
[ "${EDGE_VERSION_DETECTED}" = "yes" ] || die "Expected 0.11.99 to be detected as old version"

echo "All nvm_install_source SHELL override tests passed"

cleanup