71 lines
1.7 KiB
Elixir
71 lines
1.7 KiB
Elixir
defmodule Mobilizon.Actors.Follower do
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@moduledoc """
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Represents the following of an actor to another actor.
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"""
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use Ecto.Schema
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import Ecto.Changeset
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alias Mobilizon.Actors.Actor
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@type t :: %__MODULE__{
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approved: boolean,
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url: String.t(),
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target_actor: Actor.t(),
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actor: Actor.t()
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}
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@required_attrs [:url, :approved, :target_actor_id, :actor_id]
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@attrs @required_attrs
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@timestamps_opts [type: :utc_datetime]
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@primary_key {:id, :binary_id, autogenerate: true}
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schema "followers" do
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field(:approved, :boolean, default: false)
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field(:url, :string)
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timestamps()
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belongs_to(:target_actor, Actor)
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belongs_to(:actor, Actor)
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end
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@doc false
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@spec changeset(t, map) :: Ecto.Changeset.t()
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def changeset(follower, attrs) do
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follower
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|> cast(attrs, @attrs)
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|> ensure_url()
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|> validate_required(@required_attrs)
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|> unique_constraint(:target_actor_id,
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name: :followers_actor_target_actor_unique_index
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)
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end
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# If there's a blank URL that's because we're doing the first insert
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@spec ensure_url(Ecto.Changeset.t()) :: Ecto.Changeset.t()
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defp ensure_url(%Ecto.Changeset{data: %__MODULE__{url: nil}} = changeset) do
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case fetch_change(changeset, :url) do
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{:ok, _url} ->
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changeset
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:error ->
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generate_url(changeset)
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end
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end
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# Most time just go with the given URL
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defp ensure_url(%Ecto.Changeset{} = changeset), do: changeset
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@spec generate_url(Ecto.Changeset.t()) :: Ecto.Changeset.t()
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defp generate_url(%Ecto.Changeset{} = changeset) do
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uuid = Ecto.UUID.generate()
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changeset
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|> put_change(:id, uuid)
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|> put_change(:url, "#{Mobilizon.Web.Endpoint.url()}/follow/#{uuid}")
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end
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end
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