Bash script that prefixes commits with a JIRA (CO-400)

smart-commit.sh

#!/usr/bin/env bash

# based on https://github.com/sbimochan/smart-commit/blob/master/commit

# am@aleksei  feature/CO-400-some-branch-name$ ./smart-commit.sh "Foo bar."
# → [feature/CO-400-some-branch-name f70ebbf167] CO-400: Foo bar.

set -euo pipefail

if [ -z "${1:-}" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
    echo "Create a commit prefixed with the current branch name."
    echo
    echo "Usage:"
    echo "  smart-commit.sh MESSAGE"
    echo
    echo "Example:"
    echo "  smart-commit.sh \"Hello world!\""
    exit 1
fi

CURRENT_BRANCH="$(git rev-parse --abbrev-ref HEAD)"
GIT_ROOT_DIRECTORY=$(git rev-parse --show-toplevel)
IGNORED_BRANCHES=("develop" "master")
CUSTOM_IGNORED_PATH="$GIT_ROOT_DIRECTORY/.smart-commit-ignore"

if [ -f "$CUSTOM_IGNORED_PATH" ]; then
    CUSTOM_BRANCHES=$(cat "$CUSTOM_IGNORED_PATH")
    BRANCHES=($CUSTOM_BRANCHES)
    IGNORED_BRANCHES=(${IGNORED_BRANCHES[@]} ${BRANCHES[@]})
fi

IS_IGNORED=false

for branch in "${IGNORED_BRANCHES[@]}"; do
    if [ "$CURRENT_BRANCH" == $branch ]; then
        IS_IGNORED=true
        break
	fi
done

CURRENT_BRANCH_JIRA=$(echo $CURRENT_BRANCH | sed "s/.*\/\([A-Z]\+\-[0-9]\+\).*/\1/p" -n)

if [ "$IS_IGNORED" == false ] && [ ${#CURRENT_BRANCH_JIRA} -gt 0 ]; then
    git commit -S -m "$CURRENT_BRANCH_JIRA: $1"
else
    git commit -S -m "$1"
fi