debianize-mobilizon/lib/mobilizon/users/push_subscription.ex

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defmodule Mobilizon.Users.PushSubscription do
@moduledoc """
Represents informations about a push subscription for a specific user
"""
use Ecto.Schema
alias Mobilizon.Users.User
import Ecto.Changeset
@primary_key {:id, :binary_id, autogenerate: true}
schema "user_push_subscriptions" do
field(:digest, :string)
belongs_to(:user, User)
field(:endpoint, :string)
field(:auth, :string)
field(:p256dh, :string)
timestamps()
end
@doc false
def changeset(push_subscription, attrs) do
push_subscription
|> cast(attrs, [:user_id, :endpoint, :auth, :p256dh])
|> put_change(:digest, compute_digest(attrs))
|> validate_required([:digest, :user_id, :endpoint, :auth, :p256dh])
|> unique_constraint([:digest, :user_id], name: :user_push_subscriptions_user_id_digest_index)
end
defp compute_digest(attrs) do
data =
Jason.encode!(%{endpoint: attrs.endpoint, keys: %{auth: attrs.auth, p256dh: attrs.p256dh}})
:sha256
|> :crypto.hash(data)
|> Base.encode16()
end
end