commit-msg-with-jira

#!/bin/bash
# The script below adds the branch name automatically to
# every one of your commit messages. The regular expression
# below searches for JIRA issue key's. The issue key will
# be extracted out of your branch name

COMMIT_MSG_FILE=$1
COMMIT_MSG=$(cat $COMMIT_MSG_FILE)
REGEX_ISSUE_ID="[A-Z]+\-[0-9]+"
REGEX_ISSUE_BRANCH="[a-zA-Z]+\/[A-Z]+\-[0-9]+"

# Find current branch name
if git rev-parse --git-dir >/dev/null 2>&1; then
    BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)
else
    echo "Not in a git repository..."
    exit 1
fi

# Check if commit message contains 'no-ticket' and remove it
if [[ $COMMIT_MSG == 'no-ticket'* ]]; then
    TRIMMED_COMMIT_MSG=${COMMIT_MSG/#'no-ticket '/}
    echo "Commit message contains 'no-ticket'"
    echo "$TRIMMED_COMMIT_MSG" >"$1"
    exit 0
fi

# Check if commit message already contains issue key
if [[ $COMMIT_MSG =~ $REGEX_ISSUE_ID ]]; then
    echo "Commit message already contains issue key. Skipping prepare-commit-msg hook..."
    exit 0
fi

# Check if branch name contains issue key
if [[ $BRANCH_NAME =~ $REGEX_ISSUE_BRANCH ]]; then
    ISSUE_ID=$(echo "$BRANCH_NAME" | grep -o -E "$REGEX_ISSUE_ID")
    if [[ $(cat "$1") == $ISSUE_ID* ]]; then
        echo "Commit message already contains issue key. Skipping prepare-commit-msg hook..."
        exit 0
    fi
    echo "Branch name is $BRANCH_NAME. Adding $ISSUE_ID to commit message..."
    echo "$ISSUE_ID $(cat "$1")" >"$1"
    exit 0
else
    echo "Branch name does not contain issue key."
    exit 0
fi