#!/bin/bash

    # "Jenkins" {
    #     "to_check": "Yes",
    #     "protocol": "http",
    #     "host": "cvtt-build.cvtt.vpn",
    #     "port": 8080
    # },

RootDir="${HOME}/prod"
# RootDir=/home/oleg/develop/cvtt2  ###### D E B U G

AlertChannel=Alerts-CVTT
Sender=${RootDir}/ops/utils/send_mmost.sh
ConfigUrl=http://cloud16.cvtt.vpn:6789/admin/cvtt_services

SERVICES_CONFIG=$(curl -s ${ConfigUrl} | ${HOME}/bin/hjson -j)

echo $Sender
echo $AlertChannel


function service_alert() {
    alert="${1}"
    if [ "${alert}" != "" ]
    then
        #it may contain quotes
        alert=$(echo "${alert}" | sed 's/"/\\"/g')
        echo -e "### :boom: SERVICE ALERT\n${alert}" | ${Sender} ${AlertChannel}
    fi

}

User=oleg
Hosts=()
DEFAULT_TO_CHECK=Yes

mapfile -t SvcNames < <(echo ${SERVICES_CONFIG} | jq -r '. | keys[]')

DEFAULT_TO_CHECK=Yes
for SvcName in "${SvcNames[@]}" ; do
    ToCheck=$(echo "$SERVICES_CONFIG" | jq -r --arg svcname "$SvcName" '.[$svcname].to_check // "Yes"')
    if [ "${ToCheck^^}" == "NO" ]; then
        continue
    fi
    Host=$(echo "$SERVICES_CONFIG" | jq -r --arg svcname "$SvcName"  '.[$svcname].host ')
    Port=$(echo "$SERVICES_CONFIG" | jq -r --arg svcname "$SvcName"  '.[$svcname].port ')
    echo "Checking \"$SvcName\" (${Host}:${Port})"


    # Use nc to check if the specified port is open
    if ! nc -z -w5 "$Host" "$Port"; then
        msg="Service \"${SvcName}\" (${Host}:${Port}) is not available"
        echo ${msg}
        service_alert "${msg}"
    fi
done