Post to slack when issue created

// Specify the key of the issue to get the fields from
def issueKey = issue.key

// Get the issue summary, and description
def issueObj = Issues.getByKey(issueKey)
def summary = issueObj.getSummary()
def description = issueObj.getDescription()

// Specify the name of the slack room to post to
def channelName = '<ChannelNameHere>'

// Specify the name of the user who will make the post
def username = '<UsernameHere>'

// Specify the message metadata
Map msg_meta = [ channel: channelName, username: username ,icon_emoji: ':rocket:']

// Specify the message body which is a simple string
Map msg_dets = [text: "A new issue was created with the details below: \n Issue key = ${issueKey} \n Issue Summary = ${summary} \n Issue Description = ${description}"]

// Post the constructed message to slack
def postToSlack = post('https://slack.com/api/chat.postMessage')
    .header('Content-Type', 'application/json')
    .header('Authorization', "Bearer ${SLACK_API_TOKEN}") // Store the API token as a script variable named SLACK_API_TOKEN
    .body(msg_meta + msg_dets)
    .asObject(Map)
    .body

assert postToSlack : "Failed to create Slack message check the logs tab for more details"