# Set up temp Git identity if none is set
setup_temp_git_identity() {
  export GIT_AUTHOR_NAME="Test User"
  export GIT_AUTHOR_EMAIL="tests@example.com"
  export GIT_COMMITTER_NAME="Test User"
  export GIT_COMMITTER_EMAIL="tests@example.com"
}

# Get temporary directory where test data will be generated.
# The function echo's the directory.
get_tmp_dir() {
  local SCRIPT=$(readlink -f "$0")
  local SCRIPT_PATH=$(dirname "$SCRIPT")

  echo "$(dirname ${0})/tmp/$(basename "${SCRIPT%.*}")"
}

# Setup bare repository which could be used as a server-side upstream.
# The function echo's the path to the repository.
setup_bare_origin_repository() {
  local TMP_DIR=`get_tmp_dir`
  local REPO_DIR="${TMP_DIR}/origin/test-repo.git"
  rm -rf "${REPO_DIR}"
  mkdir -p "${REPO_DIR}"
  git -C "${REPO_DIR}" init --bare --initial-branch=main > /dev/null 2>&1
  echo "${REPO_DIR}"
}

# Install hook to the given bare repository.
# The bare git repository is provided as $1, hook script is provided as $2,
# and the hook name is provided as $3.
install_hook() {
  local GIT_DIR="${1}"
  local HOOK_SCRIPT="${2}"
  local HOOK_NAME="${3}"
  cp "${HOOK_SCRIPT}" "${GIT_DIR}/hooks/${HOOK_NAME}"
}

# Clone repository provided via $1. The path to the working directory is
# echo'd.
clone_repository() {
  local TMP_DIR=`get_tmp_dir`
  local WORK_GIT_DIR="${TMP_DIR}/checkout/test-repo"
  rm -rf "${WORK_GIT_DIR}"
  git clone "${1}" "${WORK_GIT_DIR}" > /dev/null 2>&1
  echo "${WORK_GIT_DIR}"
}