Create git branch for JIRA issue and mark in progress

git_branch_jira_in_progress.sh

export JIRA_USERNAME="JIRA_EMAIL";
export JIRA_API_KEY="API_KEY";  # Get key at https://id.atlassian.com/manage-profile/security
export JIRA_DOMAIN="example.atlassian.net"
export JIRA_PROJECT="PROJECT"

function j() {
    git add .;
    git stash;
    local ticket_id="$JIRA_PROJECT-$1"
    if ! git checkout -b $ticket_id 2>/dev/null; then
        echo "branch $ticket_id exists. checking out";
        git checkout "$ticket_id";
    else
        echo "branch $ticket_id does not exist. creating"
        
        # Find transition ID for in progress at:
        # https://$JIRA_DOMAIN/rest/api/2/issue/$TICKET_ID/transitions
        local transition_id="21"  # This may vary in your JIRA instance

        echo "marking JIRA $ticket_id in progress"

        curl -s -w "%{http_code}" \
             -u "${JIRA_USERNAME}:${JIRA_API_KEY}" \
             -X POST \
             -H "Content-Type: application/json" \
             -d "{\"transition\": {\"id\": \"${transition_id}\"}}" \
             "https://${JIRA_DOMAIN}/rest/api/2/issue/${ticket_id}/transitions"
    fi;
}