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Robust user authentication solution

Security advisory: This version has known vulnerabilities. View advisories
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pow lib extensions email_confirmation ecto schema.ex
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lib/extensions/email_confirmation/ecto/schema.ex 

defmodule PowEmailConfirmation.Ecto.Schema do

  @moduledoc false

  use Pow.Extension.Ecto.Schema.Base

  alias Ecto.Changeset

  alias Pow.{Extension.Ecto.Schema, UUID}



  def validate!(_config, module) do

    Schema.require_schema_field!(module, :email, PowEmailConfirmation)

  end



  def attrs(_config) do

    [{:email_confirmation_token, :string},

     {:email_confirmed_at, :utc_datetime}]

  end



  def indexes(_config) do

    [{:email_confirmation_token, true}]

  end



  def changeset(changeset, _attrs, _config) do

    changeset

    |> put_email_confirmation_token()

    |> Changeset.validate_required([:email_confirmation_token])

    |> Changeset.unique_constraint(:email_confirmation_token)

  end



  defp put_email_confirmation_token(changeset) do

    current_email = changeset.data.email



    changeset

    |> Changeset.get_field(:email)

    |> case do

      ^current_email -> changeset

      _new_email -> Changeset.put_change(changeset, :email_confirmation_token, UUID.generate())

    end

  end

end