#!/usr/bin/env bash
# Prints the name of the primary branch, e.g. main or live

set -o errexit
set -o nounset

GIT_ROOT=$(git rev-parse --absolute-git-dir)

if [[ -f "$GIT_ROOT/refs/remotes/origin/HEAD" ]]
then
  PRIMARY_BRANCH=$(cat "$GIT_ROOT/refs/remotes/origin/HEAD" \
    | tr '/' ' ' \
    | awk '{print $5}')
elif [[ -f "$GIT_ROOT/refs/remotes/origin/live" ]]
then
  PRIMARY_BRANCH="live"
else
  PRIMARY_BRANCH="main"
fi

echo -e "$PRIMARY_BRANCH"