comty/packages/music_server/src/middlewares/withOptionalAuth/index.js

export default async function (req, res, next) {
    // extract authentification header
    let auth = req.headers.authorization

    if (!auth) {
        return next()
    }

    auth = auth.replace("Bearer ", "")

    // check if authentification is valid
    const validation = await comty.rest.session.validateToken(auth).catch((error) => {
        return {
            valid: false,
        }
    })

    if (!validation.valid) {
        return next()
    }

    req.sessionToken = auth
    req.session = validation.session

    return next()
}