config.js.dist

const urlWebserver = "https://myserver.com";

module.exports = {
    notifiers: {
        pushover: {
            type: 'pushover',
            token: 'xxx',
            user: 'xxx'
        }
    },
    checks: [
        {
            name: "Ping web server",
            every: { rule: "*/10 * * * * *"},
            execute: async (axios, context, notify) => {
                const lastContext = context.get();
                let online;

                try {
                    await axios.get(urlWebserver);
                    online = true;
                } catch(e) {
                    online = false;
                }

                const alert = (lastContext && lastContext.online != online) || (!lastContext && !online);
                if (alert) {
                    await notify('*', `${online ? "End alert" : "Start alert"} Web server`, `Webserver is ${online ? "online" : "offline"}`);
                }

                return { online };
            }
        }
    ]
}