76 lines
2.1 KiB
Elixir
76 lines
2.1 KiB
Elixir
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# 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.Activity.Search do
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alias Pleroma.Activity
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alias Pleroma.Object.Fetcher
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alias Pleroma.Repo
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alias Pleroma.User
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alias Pleroma.Web.ActivityPub.Visibility
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import Ecto.Query
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def search(user, search_query) do
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index_type = if Pleroma.Config.get([:database, :rum_enabled]), do: :rum, else: :gin
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Activity
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|> Activity.with_preloaded_object()
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|> Activity.restrict_deactivated_users()
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|> restrict_public()
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|> query_with(index_type, search_query)
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|> maybe_restrict_local(user)
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|> Repo.all()
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|> maybe_fetch(user, search_query)
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end
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defp restrict_public(q) do
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from([a, o] in q,
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where: fragment("?->>'type' = 'Create'", a.data),
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where: "https://www.w3.org/ns/activitystreams#Public" in a.recipients,
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limit: 40
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)
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end
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defp query_with(q, :gin, search_query) do
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from([a, o] in q,
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where:
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fragment(
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"to_tsvector('english', ?->>'content') @@ plainto_tsquery('english', ?)",
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o.data,
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^search_query
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),
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order_by: [desc: :id]
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)
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end
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defp query_with(q, :rum, search_query) do
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from([a, o] in q,
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where:
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fragment(
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"? @@ plainto_tsquery('english', ?)",
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o.fts_content,
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^search_query
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),
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order_by: [fragment("? <=> now()::date", o.inserted_at)]
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)
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end
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# users can search everything
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defp maybe_restrict_local(q, %User{}), do: q
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# unauthenticated users can only search local activities
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defp maybe_restrict_local(q, _), do: where(q, local: true)
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defp maybe_fetch(activities, user, search_query) do
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with true <- Regex.match?(~r/https?:/, search_query),
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{:ok, object} <- Fetcher.fetch_object_from_id(search_query),
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%Activity{} = activity <- Activity.get_create_by_object_ap_id(object.data["id"]),
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true <- Visibility.visible_for_user?(activity, user) do
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activities ++ [activity]
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else
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_ -> activities
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end
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end
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end
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