Jira Ticket Extraction For branches like /ABCD-1234/<BRANCH_NAME> It'll prepopulate commit msg like this: ABCD-1234

prepare-commit-msg

#!/bin/bash

COMMIT_MSG_FILE=$1
COMMIT_SOURCE=$2
COMMIT_SHA=$3

# Get the current branch name
branchName=$(git rev-parse --abbrev-ref HEAD)

# Use a regex to extract the Jira issue ID (e.g., PROJ-123, including alphanumeric project keys)
# The pattern matches "PROJ-123" within common branch naming conventions
jiraId=$(echo "$branchName" | sed -nr 's/.*\/([A-Z0-9]+-[0-9]+)\/.*/\1/p')

if [ "$COMMIT_SOURCE" = "commit" ]; then
  # If the commit is an amend, do not modify the commit message unless the author wants to
  exit 0
else
  # For new commits, proceed to modify the commit message

    # If a Jira ID was found, prepend it to the commit message file ($1)
    if [[ ! -z "$jiraId" ]]; then
        # $1 is the name of the file containing the commit message
        echo "$jiraId | latest changes. $(cat "$1") " > "$1"
    else
        echo "WARNING:NO JIRA ID FOUND IN BRANCH NAME. IT CAN BLOCK YOUR PULL REQUESTS! $(cat "$1") " > "$1"
    fi
fi