mirror of
https://akkoma.dev/AkkomaGang/akkoma.git
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234 lines
6.2 KiB
Elixir
234 lines
6.2 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Object do
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use Ecto.Schema
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alias Pleroma.Activity
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alias Pleroma.Object
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alias Pleroma.Object.Fetcher
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alias Pleroma.ObjectTombstone
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alias Pleroma.Repo
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alias Pleroma.User
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import Ecto.Query
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import Ecto.Changeset
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require Logger
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schema "objects" do
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field(:data, :map)
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timestamps()
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end
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def create(data) do
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Object.change(%Object{}, %{data: data})
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|> Repo.insert()
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end
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def change(struct, params \\ %{}) do
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struct
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|> cast(params, [:data])
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|> validate_required([:data])
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|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
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end
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def get_by_id(nil), do: nil
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def get_by_id(id), do: Repo.get(Object, id)
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def get_by_ap_id(nil), do: nil
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def get_by_ap_id(ap_id) do
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Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
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end
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defp warn_on_no_object_preloaded(ap_id) do
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"Object.normalize() called without preloaded object (#{ap_id}). Consider preloading the object"
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|> Logger.debug()
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Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
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end
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def normalize(_, fetch_remote \\ true, options \\ [])
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# If we pass an Activity to Object.normalize(), we can try to use the preloaded object.
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# Use this whenever possible, especially when walking graphs in an O(N) loop!
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def normalize(%Object{} = object, _, _), do: object
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def normalize(%Activity{object: %Object{} = object}, _, _), do: object
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# A hack for fake activities
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def normalize(%Activity{data: %{"object" => %{"fake" => true} = data}}, _, _) do
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%Object{id: "pleroma:fake_object_id", data: data}
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end
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# No preloaded object
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def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, fetch_remote, _) do
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warn_on_no_object_preloaded(ap_id)
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normalize(ap_id, fetch_remote)
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end
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# No preloaded object
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def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote, _) do
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warn_on_no_object_preloaded(ap_id)
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normalize(ap_id, fetch_remote)
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end
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# Old way, try fetching the object through cache.
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def normalize(%{"id" => ap_id}, fetch_remote, _), do: normalize(ap_id, fetch_remote)
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def normalize(ap_id, false, _) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
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def normalize(ap_id, true, options) when is_binary(ap_id) do
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Fetcher.fetch_object_from_id!(ap_id, options)
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end
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def normalize(_, _, _), do: nil
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# Owned objects can only be mutated by their owner
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def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),
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do: actor == ap_id
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# Legacy objects can be mutated by anybody
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def authorize_mutation(%Object{}, %User{}), do: true
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def get_cached_by_ap_id(ap_id) do
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key = "object:#{ap_id}"
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Cachex.fetch!(:object_cache, key, fn _ ->
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object = get_by_ap_id(ap_id)
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if object do
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{:commit, object}
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else
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{:ignore, object}
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end
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end)
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end
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def context_mapping(context) do
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Object.change(%Object{}, %{data: %{"id" => context}})
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end
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def make_tombstone(%Object{data: %{"id" => id, "type" => type}}, deleted \\ DateTime.utc_now()) do
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%ObjectTombstone{
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id: id,
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formerType: type,
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deleted: deleted
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}
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|> Map.from_struct()
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end
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def swap_object_with_tombstone(object) do
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tombstone = make_tombstone(object)
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object
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|> Object.change(%{data: tombstone})
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|> Repo.update()
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end
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def delete(%Object{data: %{"id" => id}} = object) do
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with {:ok, _obj} = swap_object_with_tombstone(object),
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deleted_activity = Activity.delete_by_ap_id(id),
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{:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
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{:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path) do
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{:ok, object, deleted_activity}
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end
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end
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def prune(%Object{data: %{"id" => id}} = object) do
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with {:ok, object} <- Repo.delete(object),
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{:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
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{:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path) do
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{:ok, object}
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end
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end
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def set_cache(%Object{data: %{"id" => ap_id}} = object) do
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Cachex.put(:object_cache, "object:#{ap_id}", object)
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{:ok, object}
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end
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def update_and_set_cache(changeset) do
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with {:ok, object} <- Repo.update(changeset) do
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set_cache(object)
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end
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end
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def increase_replies_count(ap_id) do
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Object
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|> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
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|> update([o],
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set: [
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data:
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fragment(
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"""
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jsonb_set(?, '{repliesCount}',
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(coalesce((?->>'repliesCount')::int, 0) + 1)::varchar::jsonb, true)
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""",
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o.data,
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o.data
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)
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]
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)
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|> Repo.update_all([])
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|> case do
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{1, [object]} -> set_cache(object)
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_ -> {:error, "Not found"}
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end
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end
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def decrease_replies_count(ap_id) do
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Object
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|> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
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|> update([o],
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set: [
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data:
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fragment(
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"""
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jsonb_set(?, '{repliesCount}',
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(greatest(0, (?->>'repliesCount')::int - 1))::varchar::jsonb, true)
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""",
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o.data,
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o.data
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)
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]
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)
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|> Repo.update_all([])
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|> case do
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{1, [object]} -> set_cache(object)
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_ -> {:error, "Not found"}
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end
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end
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def increase_vote_count(ap_id, name) do
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with %Object{} = object <- Object.normalize(ap_id),
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"Question" <- object.data["type"] do
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multiple = Map.has_key?(object.data, "anyOf")
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options =
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(object.data["anyOf"] || object.data["oneOf"] || [])
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|> Enum.map(fn
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%{"name" => ^name} = option ->
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Kernel.update_in(option["replies"]["totalItems"], &(&1 + 1))
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option ->
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option
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end)
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data =
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if multiple do
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Map.put(object.data, "anyOf", options)
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else
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Map.put(object.data, "oneOf", options)
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end
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object
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|> Object.change(%{data: data})
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|> update_and_set_cache()
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else
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_ -> :noop
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end
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end
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end
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