#!/bin/bash

# --[ function
function get_sed () {
	OS=$(uname  -s)
	if [ "${OS}" == "Linux" ]; then
		SED=$(command -v sed)
	else
		SED=$(command -v gsed)
	fi
	if [ -z "${SED}" ]; then
		echo ">> GNU 'sed' was not found on the system."
		echo ">> Please install it"
		exit 1
	fi
	echo "${SED}"
}

function rebasing-branch() {
for location in rebase-merge rebase-apply; do
	path=$(git rev-parse --git-path ${location})
	if test -d ${path}; then
		revision=$(<${path}/head-name)
		echo ${revision##refs/heads/}
		return 0
	fi
done
}

function get_branch_name () {
  BRANCH_NAME="$(git branch --show-current)"
  if [ -z "${BRANCH_NAME}" ]; then
    BRANCH_NAME="$(rebasing-branch)"
  fi
  echo "${BRANCH_NAME}"
}

# Function to extract the ticket number:
# Ex: 12324-toto -> AVXSRE-1234
#     12134/titi -> AVXSRE-1234
function clean_branch_name () {
	echo "$1" | grep -E -o '[0-9][0-9]+'
}

# --[ Env
TRAILER=$1
SED="$(get_sed)"
BRANCH="$(get_branch_name)"
CLEAN_BRANCH="$(clean_branch_name $BRANCH)"

# --[ Main function
echo "${1}-${CLEAN_BRANCH}"