# Pleroma: A lightweight social networking server # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/> # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Activity.Search do alias Pleroma.Activity alias Pleroma.Object.Fetcher alias Pleroma.Pagination alias Pleroma.User alias Pleroma.Web.ActivityPub.Visibility require Pleroma.Constants import Ecto.Query def search(user, search_query, options \\ []) do index_type = if Pleroma.Config.get([:database, :rum_enabled]), do: :rum, else: :gin limit = Enum.min([Keyword.get(options, :limit), 40]) offset = Keyword.get(options, :offset, 0) author = Keyword.get(options, :author) Activity |> Activity.with_preloaded_object() |> Activity.restrict_deactivated_users() |> restrict_public() |> query_with(index_type, search_query) |> maybe_restrict_local(user) |> maybe_restrict_author(author) |> maybe_restrict_blocked(user) |> Pagination.fetch_paginated(%{"offset" => offset, "limit" => limit}, :offset) |> maybe_fetch(user, search_query) end def maybe_restrict_author(query, %User{} = author) do Activity.Queries.by_author(query, author) end def maybe_restrict_author(query, _), do: query def maybe_restrict_blocked(query, %User{} = user) do Activity.Queries.exclude_authors(query, User.blocked_users_ap_ids(user)) end def maybe_restrict_blocked(query, _), do: query defp restrict_public(q) do from([a, o] in q, where: fragment("?->>'type' = 'Create'", a.data), where: ^Pleroma.Constants.as_public() in a.recipients ) end defp query_with(q, :gin, search_query) do from([a, o] in q, where: fragment( "to_tsvector('english', ?->>'content') @@ plainto_tsquery('english', ?)", o.data, ^search_query ) ) end defp query_with(q, :rum, search_query) do from([a, o] in q, where: fragment( "? @@ plainto_tsquery('english', ?)", o.fts_content, ^search_query ), order_by: [fragment("? <=> now()::date", o.inserted_at)] ) end defp maybe_restrict_local(q, user) do limit = Pleroma.Config.get([:instance, :limit_to_local_content], :unauthenticated) case {limit, user} do {:all, _} -> restrict_local(q) {:unauthenticated, %User{}} -> q {:unauthenticated, _} -> restrict_local(q) {false, _} -> q end end defp restrict_local(q), do: where(q, local: true) defp maybe_fetch(activities, user, search_query) do with true <- Regex.match?(~r/https?:/, search_query), {:ok, object} <- Fetcher.fetch_object_from_id(search_query), %Activity{} = activity <- Activity.get_create_by_object_ap_id(object.data["id"]), true <- Visibility.visible_for_user?(activity, user) do [activity | activities] else _ -> activities end end end