#!/bin/sh

branch_name=$1

# See if it already exists
git rev-parse --verify --quiet $branch_name >/dev/null
if [[ $? -eq 0 ]] ; then
	# Just checkout what they asked
	git checkout "$branch_name"
else
	# Make sure we have the latest origin/$branch_name to branch
	git fetch
	exists_remote=$(git branch -r | grep -x "  origin/$branch_name" | wc -l)
	if [[ $exists_remote -eq 0 ]] ; then
		# Specifying stable to get the last released code
		git checkout -b "$branch_name" origin/stable
		# Go ahead and put the branch out on the server
		git push origin "$branch_name"
		# Setup the merge property so that pulls come from the right place (instead of stable)
		git config --replace-all "branch.$branch_name.merge" "refs/heads/$branch_name"
	else
		# Do the checkout
		git checkout -b "$branch_name" "origin/$branch_name"
	fi
fi