{:endpoint "https://random-push-service.com/some-kind-of-unique-id-1234/v2/"
 :keys     {:p256dh "BNcRdreALRFXTkOOUHK1EtK2wtaz5Ry4YfYCA_0QTpQtUbVlUls0VJXg7A8u-Ts1XbjhazAkj7I99e8QcYP7DkM="
            :auth   "tBHItJI5svbpez7KI4CCXg=="}}

(require '[webpush.core :refer [subscription push-service notification send!]])

(let [;; Create a subscription
      sub (subscription <endpoint> <p256dh> <auth>)
      ;; Create a push-service instance by passing your `public-key`,
      ;; `private-key` (as strings), and the webpush `subject` (most of the time
      ;; your email)
      svc (service <public-key> <private-key> <subject>)]
  (send! svc (notification sub "Hello World!")))

;; The webpush protocol force payloads encryption using public/private keypairs.
;; On the JVM it uses some algorithms provided by BouncyCastle. If you get any
;; error relative to crypto, you can enable them by calling:
(webpush.core/add-security-provider!)

(webpush.utils/generate-keys)
;; => {:public "BEWi1tvrrkZhe_FJjhGbVvLDmXrQMhMr27aJ9UGJdCSAdRp8tVciDbNqBMLlmb2ZctcZvfY2tEvQIlSRo7QqVkw=",
;;     :private "AMbTUIvdMwwboLSxWMNoRS6XaJuXmX1reHrkNBdiJBwq"}