#!/bin/bash

set -eu

APPS_DIR="${HOME}/apps"

VERSION="22.05"
INSTALL_DIR="${APPS_DIR}/helix"
INSTALLED_VERSION=""

if [[ -x "$(command -v hx)" ]] ; then
  INSTALLED_VERSION="$(hx --version | grep -o '[0-9]\+\.[0-9]\+')"
fi

if [[ "$VERSION" != "$INSTALLED_VERSION" ]] ; then
  echo "Helix editor version ${VERSION} already installed."
  exit 0
fi

echo "Installing helix editor version ${VERSION}..."

URL="https://github.com/helix-editor/helix/releases/download/${VERSION}/helix-${VERSION}-x86_64-linux.tar.xz"

echo "Downloading from ${URL}..."
TARGET="$(download "$URL")"

if [[ -d "${INSTALL_DIR}" ]] ; then
  echo "Removing old helix editor installation..."
  rm -rf "${INSTALL_DIR}"
fi

echo "Unpacking file ${TARGET}..."
mkdir -p "${APPS_DIR}"
tar --directory="${APPS_DIR}" -xf "${TARGET}"

echo "Moving unpacked directory to ${INSTALL_DIR}"
mv "${APPS_DIR}/helix-${VERSION}-x86_64-linux" "${INSTALL_DIR}"

echo "Creating link to helix editor executable..."
mkdir -p "${HOME}/.local/bin"
ln -s --force "${INSTALL_DIR}/hx" "${HOME}/.local/bin/"