#!/bin/sh

die () { echo "$@" ; cleanup ; exit 1; }
cleanup () {
  unset -f nvm_ls_current nvm_ls nvm_is_version_installed
}

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

\. ../../common.sh

nvm_ls_current() {
  echo "CURRENT!"
  return 7
}

try nvm_version current
EXPECTED_OUTPUT="CURRENT!"
[ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die '"nvm_version current" did not return nvm_ls_current output'
[ "_$CAPTURED_EXIT_CODE" = "_7" ] || die '"nvm_version current" did not return nvm_ls_current exit code'

try nvm_version
EXPECTED_OUTPUT="CURRENT!"
[ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die '"nvm_version" did not return nvm_ls_current output'
[ "_$CAPTURED_EXIT_CODE" = "_7" ] || die '"nvm_version" did not return nvm_ls_current exit code'

nvm_ls() {
  echo "line 1"
  echo "line 2"
  echo "pattern: $1"
}
[ "_$(nvm_version foo)" = "_pattern: foo" ] || die '"nvm_version foo" did not pass the pattern to "nvm_ls", or return the last line'
[ "_$(nvm_version node)" = "_pattern: stable" ] || die '"nvm_version node" did not pass "stable" to "nvm_ls"'
[ "_$(nvm_version node-)" = "_pattern: stable" ] || die '"nvm_version node-" did not pass "stable" to "nvm_ls"'

nvm_ls() { echo "system v20.0.0"; }
[ "_$(nvm_version system)" = "_system" ] || die '"nvm_version system" did not return "system" when "nvm_ls" returns extra columns'

nvm_ls() { echo "N/A"; }
try nvm_version foo
EXPECTED_OUTPUT="N/A"
[ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die '"nvm_version" did not return N/A when nvm_ls returns N/A'
[ "_$CAPTURED_EXIT_CODE" = "_3" ] || die '"nvm_version" returning N/A did not exit code with code 3'

nvm_ls() { echo; }
try nvm_version foo
EXPECTED_OUTPUT="N/A"
[ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die '"nvm_version" did not return N/A when nvm_ls returns nothing'
[ "_$CAPTURED_EXIT_CODE" = "_3" ] || die '"nvm_version" returning N/A did not exit code with code 3'

# an exact installed version resolves without forking "nvm_ls"
nvm_is_version_installed() { return 0; }
nvm_ls() { die '"nvm_version" must not call "nvm_ls" for an exact installed version'; }
try nvm_version v1.2.3
EXPECTED_OUTPUT="v1.2.3"
[ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die '"nvm_version v1.2.3" did not return the version itself; got '"$CAPTURED_STDOUT"
[ "_$CAPTURED_EXIT_CODE" = "_0" ] || die '"nvm_version v1.2.3" did not exit 0; got '"$CAPTURED_EXIT_CODE"

# an exact version that is not installed still falls back to "nvm_ls"
nvm_is_version_installed() { return 1; }
nvm_ls() { echo "pattern: $1"; }
try nvm_version v1.2.3
EXPECTED_OUTPUT="pattern: v1.2.3"
[ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die '"nvm_version v1.2.3" did not fall back to "nvm_ls"; got '"$CAPTURED_STDOUT"
[ "_$CAPTURED_EXIT_CODE" = "_0" ] || die '"nvm_version v1.2.3" did not exit 0; got '"$CAPTURED_EXIT_CODE"

# only exact, fully-qualified versions take the fast path
nvm_is_version_installed() { die '"nvm_version" must not call "nvm_is_version_installed" for non-exact versions'; }
nvm_ls() { echo "pattern: $1"; }
for PATTERN in v1.2 v1 1.2.3 v1.2.3-rc.1 v1.2.3.4 v1.2.3.; do
  try nvm_version "$PATTERN"
  EXPECTED_OUTPUT="pattern: $PATTERN"
  [ "_$CAPTURED_STDOUT" = "_$EXPECTED_OUTPUT" ] || die "nvm_version $PATTERN did not fall back to nvm_ls; got $CAPTURED_STDOUT"
  [ "_$CAPTURED_EXIT_CODE" = "_0" ] || die "nvm_version $PATTERN did not exit 0; got $CAPTURED_EXIT_CODE"
done
unset -f nvm_is_version_installed