#!/bin/bash

function usage {
        programName=$0
        echo "description: use this program to post messages to Rocket.chat channel"
        echo "usage: $programName [-b \"message body\"] [-u \"rocket.chat url\"]"
        echo "      -b    The message body"
        echo "      -u    The rocket.chat hook url to post to"
        exit 1
    }
    while getopts ":b:u:h" opt; do
      case ${opt} in
        u) rocketUrl="$OPTARG"
        ;;
        b) msgBody="$OPTARG"
        ;;
        h) usage
        ;;
        \?) echo "Invalid option -$OPTARG" >&2
        ;;
      esac
    done
    if [[ ! "${rocketUrl}" || ! "${msgBody}" ]]; then
        echo "all arguments are required"
        usage
    fi
read -d '' payLoad << EOF
{"text": "${msgBody}"}
EOF
echo $payLoad
statusCode=$(curl \
	    --insecure \
            --write-out %{http_code} \
            --silent \
            --output /dev/null \
            -X POST \
            -H 'Content-type: application/json' \
            --data "${payLoad}" ${rocketUrl})
echo ${statusCode}