# Utility functions/macros

if [ -z "$BASE_TEST_DIR" ]; then
  log ERROR "Please define BASE_TEST_DIR variable"
  exit 1
fi

TEST_NAME=$(basename $0 | cut -d_ -f2- | cut -d'.' -f 1)
TEST_DIR="$BASE_TEST_DIR/test-dir_$TEST_NAME"

function _clean_up() {
  if [ -z "$LEAVE_DIR" ]; then
    log DEBUG "Removing test directory"
    rm -rf $TEST_DIR
  fi
}

VERBOSITY=${VERBOSITY:-INFO}
set_verbority $VERBOSITY

mkdir -p "$TEST_DIR"
# Define an handler for clean_up
trap "_clean_up; exit 0" EXIT

function prepare_for_git_upstream() {
  local TEST_DIR="$1"
  local REPO_NAME="$2"
  local UPSTREAM_REPO="$3"
  local TEST_BASE_REF="$4"
  local TEST_NAME="$5"

  log DEBUG "Creating bare repo '$REPO_NAME.bare'"
  rm -rf $TEST_DIR/$REPO_NAME.bare >/dev/null 2>&1
  mkdir $TEST_DIR/$REPO_NAME.bare
  pushd $TEST_DIR/$REPO_NAME.bare >/dev/null
  git init --bare --quiet || return 1
  popd >/dev/null

  log DEBUG "Cloning repo $REPO_NAME"
  rm -rf $TEST_DIR/$REPO_NAME >/dev/null 2>&1
  mkdir $TEST_DIR/$REPO_NAME

  pushd $TEST_DIR/$REPO_NAME >/dev/null
  git init --quiet || return 1
  git config push.default simple --quiet || return 1
  git remote add origin $TEST_DIR/$REPO_NAME.bare || return 1

  log DEBUG "Fetching upstream testing version"
  git remote add upstream $UPSTREAM_REPO || return 1
  git fetch --all --quiet >/dev/null || return 1
  git for-each-ref refs/remotes/upstream --format "%(refname:short)" | \
    sed -e 's:\(upstream/\(.*\)\)$:\1\:refs/heads/upstream/\2:' | \
      xargs git push --quiet --tags origin || return 1

  log DEBUG "Creating a new branch from version $TEST_BASE_REF"
  git checkout -b import/$TEST_NAME $TEST_BASE_REF --quiet || return 1

  git checkout -b master --quiet || return 1
  popd >/dev/null
}