#!/bin/sh

cleanup() {
    unset nvm_get_os
    rm -rf "${NVM_DIR}/alias/lts"
    mv "${NVM_DIR}/alias/lts-backup" "${NVM_DIR}/alias/lts"
}

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

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

MOCKS_DIR="../Unit tests/mocks"

LTS_NAMES_PATH="${MOCKS_DIR}/LTS_names.txt"
LTS_LIST="$(cat "${LTS_NAMES_PATH}" | tail -n +2)"

mv "${NVM_DIR}/alias/lts" "${NVM_DIR}/alias/lts-backup" ||:
mkdir -p "${NVM_DIR}/alias/lts"

for LTS in $LTS_LIST; do
  cp "${NVM_DIR}/alias/lts-backup/${LTS}" "${NVM_DIR}/alias/lts/"
done

ACTUAL="$(nvm_normalize_lts "foo")"
EXPECTED='foo'
[ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"

ACTUAL="$(nvm_normalize_lts "lts/*")"
EXPECTED='lts/*'
[ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"

if ACTUAL="$(nvm_normalize_lts lts/ARGON)"; then
  die "expected failure, got >${ACTUAL}<"
fi

STAR="$(cat "${MOCKS_DIR}/lts-star.txt")"

ACTUAL="$(nvm_normalize_lts "${STAR}")"
EXPECTED="${STAR}"
[ "${ACTUAL}" = "${EXPECTED}" ] || die "expected >${EXPECTED}<, got >${ACTUAL}<"

# or, back up LTS aliases, copy backups that are in LTS names
#

INDEX=1
printf '%s\n' "${LTS_LIST}" | while IFS= read -r LTS; do
    ACTUAL="$(nvm_normalize_lts "lts/-${INDEX}")"
    MESSAGE="for lts/-${INDEX} (${LTS})"
    EXPECTED="lts/$(echo "${LTS_LIST}" | tail -n +${INDEX} | head -n1)"
    [ "${ACTUAL}" = "${EXPECTED}" ] || die "${MESSAGE}: expected >${EXPECTED}<, got >${ACTUAL}<"

    INDEX=$(($INDEX + 1))
done