#!/bin/bash
# LinuxGSM alert_slack.sh function
# Author: Kenneth Lindeof
# Website: https://linuxgsm.com
# Description: Sends Slack alert.

local modulename="ALERT"
local commandaction="Alert"
local function_selfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"

if ! command -v jq > /dev/null; then
	fn_print_fail_nl "Sending Slack alert: jq is missing."
	fn_script_log_fatal "Sending Slack alert: jq is missing."
fi

json=$(cat <<EOF
{
    "attachments": [
    	{
    		"color": "#36a64f",
    		"blocks": [
    			{
                    "type": "section",
                    "text": {
                        "type": "mrkdwn",
                        "text": "*LinuxGSM Alert*"
                    }
                },
                {
                    "type": "section",
                    "text": {
                        "type": "mrkdwn",
                        "text": "*${alertemoji} ${alertsubject}* \n ${alertbody}"
                    }
                },
                {
                    "type": "divider"
                },
                {
                    "type": "section",
                    "fields": [
                        {
                            "type": "mrkdwn",
                            "text": "*Game:* \n ${gamename}"
                        },
                        {
                            "type": "mrkdwn",
                            "text": "*Server IP:* \n ${alertip}:${port}"
                        },
                        {
                            "type": "mrkdwn",
                            "text": "*Server Name:* \n ${servername}"
                        }
                    ]
                },
     			{
                    "type": "section",
                    "text": {
                            "type": "mrkdwn",
                            "text": "Hostname: ${HOSTNAME} / More info: ${alerturl}"
                    }
                }
            ]
    	}
    ]
}
EOF
)

fn_print_dots "Sending Slack alert"

slacksend=$(curl -sSL -H "Content-Type: application/json" -X POST -d "$(echo -n "$json" | jq -c .)" "${slackwebhook}")

if [ "${slacksend}" == "ok" ]; then
	fn_print_ok_nl "Sending Slack alert"
	fn_script_log_pass "Sending Slack alert"
else
    fn_print_fail_nl "Sending Slack alert: ${slacksend}"
	fn_script_log_fatal "Sending Slack alert: ${slacksend}"
fi