142 lines
4.0 KiB
Elixir
142 lines
4.0 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.MastodonAPI.SearchController do
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use Pleroma.Web, :controller
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alias Pleroma.Activity
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alias Pleroma.Plugs.OAuthScopesPlug
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alias Pleroma.Plugs.RateLimiter
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alias Pleroma.Repo
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alias Pleroma.User
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alias Pleroma.Web
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alias Pleroma.Web.MastodonAPI.AccountView
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alias Pleroma.Web.MastodonAPI.StatusView
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require Logger
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plug(Pleroma.Web.ApiSpec.CastAndValidate)
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# Note: Mastodon doesn't allow unauthenticated access (requires read:accounts / read:search)
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plug(OAuthScopesPlug, %{scopes: ["read:search"], fallback: :proceed_unauthenticated})
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# Note: on private instances auth is required (EnsurePublicOrAuthenticatedPlug is not skipped)
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plug(RateLimiter, [name: :search] when action in [:search, :search2, :account_search])
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defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.SearchOperation
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def account_search(%{assigns: %{user: user}} = conn, %{q: query} = params) do
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accounts = User.search(query, search_options(params, user))
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conn
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|> put_view(AccountView)
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|> render("index.json", users: accounts, for: user, as: :user)
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end
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def search2(conn, params), do: do_search(:v2, conn, params)
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def search(conn, params), do: do_search(:v1, conn, params)
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defp do_search(version, %{assigns: %{user: user}} = conn, %{q: query} = params) do
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options = search_options(params, user)
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timeout = Keyword.get(Repo.config(), :timeout, 15_000)
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default_values = %{"statuses" => [], "accounts" => [], "hashtags" => []}
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result =
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default_values
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|> Enum.map(fn {resource, default_value} ->
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if params[:type] in [nil, resource] do
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{resource, fn -> resource_search(version, resource, query, options) end}
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else
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{resource, fn -> default_value end}
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end
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end)
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|> Task.async_stream(fn {resource, f} -> {resource, with_fallback(f)} end,
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timeout: timeout,
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on_timeout: :kill_task
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)
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|> Enum.reduce(default_values, fn
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{:ok, {resource, result}}, acc ->
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Map.put(acc, resource, result)
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_error, acc ->
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acc
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end)
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json(conn, result)
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end
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defp search_options(params, user) do
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[
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resolve: params[:resolve],
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following: params[:following],
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limit: params[:limit],
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offset: params[:offset],
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type: params[:type],
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author: get_author(params),
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for_user: user
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]
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|> Enum.filter(&elem(&1, 1))
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end
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defp resource_search(_, "accounts", query, options) do
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accounts = with_fallback(fn -> User.search(query, options) end)
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AccountView.render("index.json",
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users: accounts,
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for: options[:for_user],
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as: :user
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)
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end
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defp resource_search(_, "statuses", query, options) do
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statuses = with_fallback(fn -> Activity.search(options[:for_user], query, options) end)
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StatusView.render("index.json",
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activities: statuses,
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for: options[:for_user],
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as: :activity
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)
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end
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defp resource_search(:v2, "hashtags", query, _options) do
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tags_path = Web.base_url() <> "/tag/"
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query
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|> prepare_tags()
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|> Enum.map(fn tag ->
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tag = String.trim_leading(tag, "#")
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%{name: tag, url: tags_path <> tag}
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end)
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end
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defp resource_search(:v1, "hashtags", query, _options) do
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query
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|> prepare_tags()
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|> Enum.map(fn tag -> String.trim_leading(tag, "#") end)
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end
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defp prepare_tags(query) do
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query
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|> String.split()
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|> Enum.uniq()
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|> Enum.filter(fn tag -> String.starts_with?(tag, "#") end)
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end
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defp with_fallback(f, fallback \\ []) do
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try do
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f.()
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rescue
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error ->
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Logger.error("#{__MODULE__} search error: #{inspect(error)}")
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fallback
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end
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end
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defp get_author(%{account_id: account_id}) when is_binary(account_id),
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do: User.get_cached_by_id(account_id)
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defp get_author(_params), do: nil
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end
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