main-generateJWT.swift

func generateJWT(for userId: String) throws -> String {
    struct StreamClaims: Claims {
        let user_id: String
    }
    
    let myClaims = StreamClaims(user_id: userId)

    var myJWT = JWT(claims: myClaims)
    
    let key = "[my_secret]"
    let keyData = key.data(using: .utf8)!
    
    let signer = JWTSigner.hs256(key: keyData)
    
    return try myJWT.sign(using: signer)
}