#!/usr/bin/env bash
# Usage: jenv version-file-write <file> <version>

set -e
[ -n "$JENV_DEBUG" ] && set -x

JENV_VERSION_FILE="$1"
JENV_VERSION="$2"

if [ -z "$JENV_VERSION" ] || [ -z "$JENV_VERSION_FILE" ]; then
  jenv-help --usage version-file-write >&2
  exit 1
fi

# Make sure the specified version is installed.
jenv-prefix "$JENV_VERSION" >/dev/null

# Write the version out to disk.
echo "$JENV_VERSION" > "$JENV_VERSION_FILE"