Hangouts Chat notify from command line

## Setup
# * Create a room with yourself
# * Add a Webhook. Click 'Configure Webhook' in dropdown of your room name. Add a webhook and copy the URL.
# * Put the webhook URL into <Chat Webhook URL> in the code. Copy the code to
# .bashrc
## Usage:
# ```
# sleep 3; hc
# ```
# In case you forgot to add `; hc` at the end, you can still:
# 1. ctrl + z to suspend the running command
# 2. run `fg ; hc` which will bring it back to foreground and add `; hc`
function hc {
  STATUS="$([[ $? = 0 ]] && echo 'Succeeded' || echo 'Failed')"
 
  HANGOUTS_CHAT_WEBHOOK_URL='Chat Webhook URL'
  COMMAND="$(history|tail -n1|sed -e 's/^\s*[0-9]\+\s*//;s/[;&|]\s*xm$//')"
  curl -s -d "{'text':'$STATUS: $COMMAND'}" -H 'Content-Type: application/json;charset=UTF-8' -X POST "$HANGOUTS_CHAT_WEBHOOK_URL" > /dev/null 2>&1
}