module.exports = (req, res, next) => {
    const start = performance.now();

    res.on("finish", () => {
        const duration = performance.now() - start;

        fetch("http://metrics:4005/push", {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({
                type: "rest",
                path: req.originalUrl,
                method: req.method,
                status: res.statusCode,
                time: duration,
                timestamp: Date.now()
            })
        }).catch(err => console.error(err));
    });

    next();
};