Send message to Google Chat with bash script.

send_notification_to_google_chat.sh

#/bin/bash
set -e

# set your BOT's API KEY and TOKEN
API_KEY=******************************
API_TOKEN=****************************

## send notification to google chat with card format.
#
# sample:
#    _send_card "<b>Roses</b> are <font color=\\\"#ff0000\\\">red</font>,<br><i>Violets</i> are <font color=\\\"#0000ff\\\">blue</font>"
#
_send_card() {
    jd='{"cards":[{"sections":[{"widgets":[{"textParagraph":{"text":"'$1'"}}]}]}]}'
    curl -X POST -H "Content-Type:application/json" -d "$jd" "https://chat.googleapis.com/v1/spaces/AAAAsBfQRug/messages?key=$API_KEY&token=$API_TOKEN"
}


_send_card "<b>Roses</b> are <font color=\\\"#ff0000\\\">red</font>,<br><i>Violets</i> are <font color=\\\"#0000ff\\\">blue</font>"