#!/usr/bin/env bash

# This setup script should do the minimum work required to download the release package, unzip it, and kick off the
# setup script contained within.

# exit when any command fails
set -e

# Make sure only root can run our script
if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

start_dir=$(pwd)

ARCH=$(uname -m)
if [ "$ARCH" != "x86_64" ]; then
  echo "Breezy Vulkan only supports x86_64 currently"
  exit 1
fi

# create temp directory
tmp_dir=$(mktemp -d -t breezy-vulkan-XXXXXXXXXX)
pushd $tmp_dir > /dev/null
echo "Created temp directory: ${tmp_dir}"

binary_download_url="https://github.com/wheaney/breezy-desktop/releases/latest/download/breezyVulkan-$ARCH.tar.gz"
if [ "$1" = "-v" ]
then
  metrics_version="$2"
  binary_path_arg="$3"
elif [ "$1" = "--tag" ] && [ -n "$2" ]
then
  binary_download_url="https://github.com/wheaney/breezy-desktop/releases/download/$2/breezyVulkan-$ARCH.tar.gz"
else
  binary_path_arg="$1"
fi

if [ -z "$binary_path_arg" ]
then
  # download and unzip the binary
  binary_path_arg="breezyVulkan-$ARCH.tar.gz"
  echo "Downloading to: ${tmp_dir}/$binary_path_arg"

  curl -L "$binary_download_url" > "$binary_path_arg"
else
  if [[ "$binary_path_arg" = /* ]]; then
    abs_path="$binary_path_arg"
  else
    # Convert relative path to absolute path
    abs_path=$(realpath "$start_dir/$binary_path_arg")
  fi
  cp $abs_path $tmp_dir
fi

echo "Extracting to: ${tmp_dir}/breezy_vulkan"
tar -xf $(basename $binary_path_arg)

pushd breezy_vulkan > /dev/null

# run the setup script that comes with this release
bin/setup $metrics_version

echo "Deleting temp directory: ${tmp_dir}"
rm -rf $tmp_dir
cd "$(dirs -l -0)" && dirs -c