#!/bin/sh

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

cleanup () {
  rm -rf "${TEST_DIR-}"
  unset TEST_DIR OUTPUT EXPECTED
}

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

TEST_DIR="${PWD}/nvm_print_alias_file_tmp"
mkdir -p "${TEST_DIR}" || die 'failed to create test dir'

printf 'v0.10 # inline comment\n' > "${TEST_DIR}/inline"
OUTPUT="$(nvm_print_alias_file "${TEST_DIR}/inline")"
[ "_${OUTPUT}" = '_v0.10' ] || die "inline comment not stripped; got '${OUTPUT}'"

printf '# leading comment\nv0.11\n' > "${TEST_DIR}/comment-first"
OUTPUT="$(nvm_print_alias_file "${TEST_DIR}/comment-first")"
[ "_${OUTPUT}" = '_v0.11' ] || die "comment-only line not skipped; got '${OUTPUT}'"

printf 'v0.12\t \nv0.13\n' > "${TEST_DIR}/trailing-space"
OUTPUT="$(nvm_print_alias_file "${TEST_DIR}/trailing-space")"
EXPECTED="$(printf 'v0.12\nv0.13')"
[ "_${OUTPUT}" = "_${EXPECTED}" ] || die "trailing whitespace not stripped, or a line was dropped; got '${OUTPUT}'"

printf '\n   \n\t\n# only a comment\n' > "${TEST_DIR}/nothing-usable"
OUTPUT="$(nvm_print_alias_file "${TEST_DIR}/nothing-usable")"
[ "_${OUTPUT}" = '_' ] || die "blank and comment-only lines should produce no output; got '${OUTPUT}'"

nvm_print_alias_file "${TEST_DIR}/nothing-usable" >/dev/null 2>&1 \
  || die 'a file with no usable lines should still exit zero'

printf 'v0.14' > "${TEST_DIR}/no-trailing-newline"
OUTPUT="$(nvm_print_alias_file "${TEST_DIR}/no-trailing-newline")"
[ "_${OUTPUT}" = '_v0.14' ] || die "a final line with no trailing newline should be read; got '${OUTPUT}'"

# a `#` pattern is a repetition operator under zsh's `extendedglob`, which is what
# made `nvm_alias` print nothing at all: https://github.com/nvm-sh/nvm/issues/3885
if [ -n "${ZSH_VERSION-}" ]; then
  setopt extendedglob || die 'enabling extendedglob failed'
  OUTPUT="$(nvm_print_alias_file "${TEST_DIR}/inline")"
  [ "_${OUTPUT}" = '_v0.10' ] || die "with extendedglob set, expected 'v0.10', got '${OUTPUT}'"
  [[ -o extendedglob ]] || die 'nvm_print_alias_file left extendedglob unset'

  unsetopt extendedglob
  nvm_print_alias_file "${TEST_DIR}/inline" > /dev/null
  [[ -o extendedglob ]] && die 'nvm_print_alias_file left extendedglob set'
fi

cleanup