setup-package.sh

#!/bin/bash
# Usage: 
#   setup-package.sh -p $package_path [-t $tag]
#
# Creates a package of the unity files at the `$package_path` folder
# and will include the files form "./Assets/Samples" in the export
# under the path "Samples~" to follow unity convention.
#
# Will also preserve any git-lfs links for files to avoid
# duplicating assets in the repo.
#
# Arguments:
#
#   -p $package_path - Required, path to package folder of project,
#       Should be something like "./openkcc"
#   [-t $tag] - Optional, tag version to checkout before building
#       package. If provided, will create a new branch with
#       the name pattern "release/$tag"

current_branch=$(git rev-parse --abbrev-ref HEAD)
current_sha=$(git rev-parse --verify HEAD)
previous_githooks=$(git config core.hooksPath)

if [ $# -eq 0 ]
then
  show_help
  exit 0
fi

show_help () {
  echo "Usage:"
  echo "  setup-package.sh -p \$package_path [-t \$tag]"
  echo ""
  echo "  Creates a package of the unity files at the `\$package_path` folder"
  echo "  and will include the files form \"$sample_path\" in the export"
  echo "  under the path \"Samples~\" to follow unity convention."
  echo ""
  echo "  Will also preserve any git-lfs links for files to avoid"
  echo "  duplicating assets in the repo."
  echo "  Arguments:"
  echo ""
  echo "    -p \$package_path - Required, path to package folder of project,"
  echo "        Should be something like \"./openkcc\""
  echo "    [-t \$tag] - Optional, tag version to checkout before building"
  echo "        package. If provided, will create a new branch with"
  echo "        the name pattern \"release/\$tag\""
}

while getopts "p:t:h" opt; do
  case $opt in
    p) package_path=$OPTARG      ;;
    t) selected_tag=$OPTARG      ;;
    h) show_help;exit 0          ;;
    ?)
      echo "Invalid option: -${OPTARG}."
      echo
      show_help
      exit 1
      ;;
  esac
done

if [ -z "$package_path" ]
then
  echo "Error: Did not provide package path (-p) argument" 1>&2
  show_help
  exit 1
fi

if [ ! -d "$package_path" ]
then
  echo "Error: Did not find package at path: \"$package_path\"" 1>&2
fi

# Checkout specific tag if one is provided
if [ ! -z "$selected_tag" ]
then
  echo "Attempting to make release for tag $selected_tag"
  if git rev-parse "$selected_tag" >/dev/null 2>&1; then
  #   git config core.hooksPath .git/hooks
    echo "Found tag $selected_tag, checking out changes"
  #   git checkout "$selected_tag"
  else
    echo "Error: Tag $selected_tag does not exist, aborting changes" 1>&2
    exit 1
  fi
fi

# Check if there are changes
if [ ! -z "$(git status --porcelain)" ]; then
  echo "Found unstaged changes:"
  git status --porcelain
  echo "Will not setup package if branch has changes" 1>&2
  exit 1
fi

# Move to temporary branch
exists=`git show-ref refs/heads/temp-branch`
if [ -n "$exists" ]; then
  git branch -D temp-branch
fi
git checkout -b temp-branch

user_email=$(git config --global user.email)
user_name=$(git config --global user.name)

if [ -z "$user_email" ]
then
  git config --global user.email "github-actions[bot]@users.noreply.github.com"
fi

if [ -z "$user_name" ]
then
  git config --global user.name "github-actions[bot]"
fi

git lfs install

# Reset all other changes
git rm -rf .
git checkout HEAD -- "$package_path"

# Keep .gitattributes for lfs files
git checkout HEAD -- .gitattributes

git commit -m "Filtered for only package files"

# Move files from $package_path to root folder
git mv $package_path/* .
git commit -m "Moved files from \"$package_path/*\" to root"

# Push changes to repo if tag was provided
if [ ! -z "$selected_tag" ]
then
  # Push changes to original repo
  exists=`git show-ref refs/heads/release/$selected_tag`
  if [ -n "$exists" ]; then
    git branch -D "release/$selected_tag"
  fi
  git branch -m "release/$selected_tag"
  git push --set-upstream origin "release/$selected_tag" --force

  git config core.hooksPath "$previous_githooks"
  # Cleanup any files in the repo we don't care about
  git checkout . && git clean -xdf .
  git checkout "$current_sha" && git checkout "$current_branch"
fi