akkoma/lib/pleroma/search/builtin.ex
2021-12-12 17:35:35 +00:00

138 lines
3.3 KiB
Elixir

defmodule Pleroma.Search.Builtin do
@behaviour Pleroma.Search
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Activity
alias Pleroma.Web.MastodonAPI.AccountView
alias Pleroma.Web.MastodonAPI.StatusView
alias Pleroma.Web.Endpoint
require Logger
@impl Pleroma.Search
def search(_conn, %{q: query} = params, options) do
version = Keyword.get(options, :version)
timeout = Keyword.get(Repo.config(), :timeout, 15_000)
default_values = %{"statuses" => [], "accounts" => [], "hashtags" => []}
default_values
|> Enum.map(fn {resource, default_value} ->
if params[:type] in [nil, resource] do
{resource, fn -> resource_search(version, resource, query, options) end}
else
{resource, fn -> default_value end}
end
end)
|> Task.async_stream(fn {resource, f} -> {resource, with_fallback(f)} end,
timeout: timeout,
on_timeout: :kill_task
)
|> Enum.reduce(default_values, fn
{:ok, {resource, result}}, acc ->
Map.put(acc, resource, result)
_error, acc ->
acc
end)
end
defp resource_search(_, "accounts", query, options) do
accounts = with_fallback(fn -> User.search(query, options) end)
AccountView.render("index.json",
users: accounts,
for: options[:for_user],
embed_relationships: options[:embed_relationships]
)
end
defp resource_search(_, "statuses", query, options) do
statuses = with_fallback(fn -> Activity.search(options[:for_user], query, options) end)
StatusView.render("index.json",
activities: statuses,
for: options[:for_user],
as: :activity
)
end
defp resource_search(:v2, "hashtags", query, options) do
tags_path = Endpoint.url() <> "/tag/"
query
|> prepare_tags(options)
|> Enum.map(fn tag ->
%{name: tag, url: tags_path <> tag}
end)
end
defp resource_search(:v1, "hashtags", query, options) do
prepare_tags(query, options)
end
defp prepare_tags(query, options) do
tags =
query
|> preprocess_uri_query()
|> String.split(~r/[^#\w]+/u, trim: true)
|> Enum.uniq_by(&String.downcase/1)
explicit_tags = Enum.filter(tags, fn tag -> String.starts_with?(tag, "#") end)
tags =
if Enum.any?(explicit_tags) do
explicit_tags
else
tags
end
tags = Enum.map(tags, fn tag -> String.trim_leading(tag, "#") end)
tags =
if Enum.empty?(explicit_tags) && !options[:skip_joined_tag] do
add_joined_tag(tags)
else
tags
end
Pleroma.Pagination.paginate(tags, options)
end
# If `query` is a URI, returns last component of its path, otherwise returns `query`
defp preprocess_uri_query(query) do
if query =~ ~r/https?:\/\// do
query
|> String.trim_trailing("/")
|> URI.parse()
|> Map.get(:path)
|> String.split("/")
|> Enum.at(-1)
else
query
end
end
defp add_joined_tag(tags) do
tags
|> Kernel.++([joined_tag(tags)])
|> Enum.uniq_by(&String.downcase/1)
end
defp joined_tag(tags) do
tags
|> Enum.map(fn tag -> String.capitalize(tag) end)
|> Enum.join()
end
defp with_fallback(f, fallback \\ []) do
try do
f.()
rescue
error ->
Logger.error("#{__MODULE__} search error: #{inspect(error)}")
fallback
end
end
end