Merge branch 'link-headers-chats' into 'develop'

[akkoma] / lib / pleroma / web / mastodon_api / controllers / search_controller.ex

diff --git a/lib/pleroma/web/mastodon_api/controllers/search_controller.ex b/lib/pleroma/web/mastodon_api/controllers/search_controller.ex
index 632c4590f7da8c7bc592fa0c85b35daaa196e0ed..1459fc49233962e023454d3adfb508741292355a 100644 (file)
--- a/lib/pleroma/web/mastodon_api/controllers/search_controller.ex
+++ b/lib/pleroma/web/mastodon_api/controllers/search_controller.ex
@@ -1,22 +1,24 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.SearchController do
   use Pleroma.Web, :controller
 
   alias Pleroma.Activity
-  alias Pleroma.Plugs.OAuthScopesPlug
-  alias Pleroma.Plugs.RateLimiter
   alias Pleroma.Repo
   alias Pleroma.User
-  alias Pleroma.Web
   alias Pleroma.Web.ControllerHelper
+  alias Pleroma.Web.Endpoint
   alias Pleroma.Web.MastodonAPI.AccountView
   alias Pleroma.Web.MastodonAPI.StatusView
+  alias Pleroma.Web.Plugs.OAuthScopesPlug
+  alias Pleroma.Web.Plugs.RateLimiter
 
   require Logger
 
+  @search_limit 40
+
   plug(Pleroma.Web.ApiSpec.CastAndValidate)
 
   # Note: Mastodon doesn't allow unauthenticated access (requires read:accounts / read:search)
@@ -33,12 +35,10 @@ defmodule Pleroma.Web.MastodonAPI.SearchController do
 
     conn
     |> put_view(AccountView)
-    # https://git.pleroma.social/pleroma/pleroma-fe/-/issues/838#note_59223
     |> render("index.json",
       users: accounts,
       for: user,
-      as: :user,
-      embed_relationships: ControllerHelper.embed_relationships?(params)
+      as: :user
     )
   end
 
@@ -46,6 +46,7 @@ defmodule Pleroma.Web.MastodonAPI.SearchController do
   def search(conn, params), do: do_search(:v1, conn, params)
 
   defp do_search(version, %{assigns: %{user: user}} = conn, %{q: query} = params) do
+    query = String.trim(query)
     options = search_options(params, user)
     timeout = Keyword.get(Repo.config(), :timeout, 15_000)
     default_values = %{"statuses" => [], "accounts" => [], "hashtags" => []}
@@ -78,7 +79,7 @@ defmodule Pleroma.Web.MastodonAPI.SearchController do
     [
       resolve: params[:resolve],
       following: params[:following],
-      limit: params[:limit],
+      limit: min(params[:limit], @search_limit),
       offset: params[:offset],
       type: params[:type],
       author: get_author(params),
@@ -94,8 +95,6 @@ defmodule Pleroma.Web.MastodonAPI.SearchController do
     AccountView.render("index.json",
       users: accounts,
       for: options[:for_user],
-      as: :user,
-      # https://git.pleroma.social/pleroma/pleroma-fe/-/issues/838#note_59223
       embed_relationships: options[:embed_relationships]
     )
   end
@@ -110,28 +109,72 @@ defmodule Pleroma.Web.MastodonAPI.SearchController do
     )
   end
 
-  defp resource_search(:v2, "hashtags", query, _options) do
-    tags_path = Web.base_url() <> "/tag/"
+  defp resource_search(:v2, "hashtags", query, options) do
+    tags_path = Endpoint.url() <> "/tag/"
 
     query
-    |> prepare_tags()
+    |> prepare_tags(options)
     |> Enum.map(fn tag ->
-      tag = String.trim_leading(tag, "#")
       %{name: tag, url: tags_path <> tag}
     end)
   end
 
-  defp resource_search(:v1, "hashtags", query, _options) do
-    query
-    |> prepare_tags()
-    |> Enum.map(fn tag -> String.trim_leading(tag, "#") end)
+  defp resource_search(:v1, "hashtags", query, options) do
+    prepare_tags(query, options)
   end
 
-  defp prepare_tags(query) do
-    query
-    |> String.split()
-    |> Enum.uniq()
-    |> Enum.filter(fn tag -> String.starts_with?(tag, "#") 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
+
+  defp add_joined_tag(tags) do
+    tags
+    |> Kernel.++([joined_tag(tags)])
+    |> Enum.uniq_by(&String.downcase/1)
+  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 joined_tag(tags) do
+    tags
+    |> Enum.map(fn tag -> String.capitalize(tag) end)
+    |> Enum.join()
   end
 
   defp with_fallback(f, fallback \\ []) do