112 lines
3.8 KiB
Elixir
112 lines
3.8 KiB
Elixir
defmodule Mobilizon.Federation.ActivityPub.Actor do
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@moduledoc """
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Module to handle ActivityPub Actor interactions
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"""
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alias Mobilizon.Actors
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Federation.ActivityPub.{Fetcher, Relay}
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alias Mobilizon.Federation.WebFinger
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alias Mobilizon.Web.Endpoint
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require Logger
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import Mobilizon.Federation.ActivityPub.Utils, only: [are_same_origin?: 2]
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@doc """
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Getting an actor from url, eventually creating it if we don't have it locally or if it needs an update
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"""
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@spec get_or_fetch_actor_by_url(String.t(), boolean) :: {:ok, Actor.t()} | {:error, String.t()}
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def get_or_fetch_actor_by_url(url, preload \\ false)
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def get_or_fetch_actor_by_url(nil, _preload), do: {:error, "Can't fetch a nil url"}
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def get_or_fetch_actor_by_url("https://www.w3.org/ns/activitystreams#Public", _preload) do
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with %Actor{url: url} <- Relay.get_actor() do
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get_or_fetch_actor_by_url(url)
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end
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end
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@spec get_or_fetch_actor_by_url(String.t(), boolean()) :: {:ok, Actor.t()} | {:error, any()}
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def get_or_fetch_actor_by_url(url, preload) do
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with {:ok, %Actor{} = cached_actor} <- Actors.get_actor_by_url(url, preload),
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false <- Actors.needs_update?(cached_actor) do
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{:ok, cached_actor}
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else
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_ ->
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# For tests, see https://github.com/jjh42/mock#not-supported---mocking-internal-function-calls and Mobilizon.Federation.ActivityPubTest
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case __MODULE__.make_actor_from_url(url, preload) do
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{:ok, %Actor{} = actor} ->
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{:ok, actor}
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{:error, err} ->
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Logger.debug("Could not fetch by AP id")
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Logger.debug(inspect(err))
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{:error, "Could not fetch by AP id"}
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end
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end
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end
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@doc """
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Create an actor locally by its URL (AP ID)
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"""
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@spec make_actor_from_url(String.t(), boolean()) ::
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{:ok, %Actor{}} | {:error, :actor_deleted} | {:error, :http_error} | {:error, any()}
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def make_actor_from_url(url, preload \\ false) do
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if are_same_origin?(url, Endpoint.url()) do
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{:error, "Can't make a local actor from URL"}
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else
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case Fetcher.fetch_and_prepare_actor_from_url(url) do
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{:ok, data} ->
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Actors.upsert_actor(data, preload)
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# Request returned 410
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{:error, :actor_deleted} ->
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Logger.info("Actor was deleted")
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{:error, :actor_deleted}
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{:error, :http_error} ->
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{:error, :http_error}
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{:error, e} ->
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Logger.warn("Failed to make actor from url")
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{:error, e}
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end
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end
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end
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@doc """
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Find an actor in our local database or call WebFinger to find what's its AP ID is and then fetch it
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"""
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@spec find_or_make_actor_from_nickname(String.t(), atom() | nil) ::
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{:ok, Actor.t()} | {:error, any()}
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def find_or_make_actor_from_nickname(nickname, type \\ nil) do
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case Actors.get_actor_by_name_with_preload(nickname, type) do
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%Actor{url: actor_url} = actor ->
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if Actors.needs_update?(actor) do
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make_actor_from_url(actor_url, true)
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else
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{:ok, actor}
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end
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nil ->
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make_actor_from_nickname(nickname, true)
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end
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end
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@spec find_or_make_group_from_nickname(String.t()) :: tuple()
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def find_or_make_group_from_nickname(nick), do: find_or_make_actor_from_nickname(nick, :Group)
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@doc """
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Create an actor inside our database from username, using WebFinger to find out its AP ID and then fetch it
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"""
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@spec make_actor_from_nickname(String.t()) :: {:ok, %Actor{}} | {:error, any()}
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def make_actor_from_nickname(nickname, preload \\ false) do
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case WebFinger.finger(nickname) do
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{:ok, url} when is_binary(url) ->
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make_actor_from_url(url, preload)
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_e ->
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{:error, "No ActivityPub URL found in WebFinger"}
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end
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end
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end
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