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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FrontendController do
use Pleroma.Web, :controller
defmacro __using__(_opts) do
quote do
require Logger
alias Pleroma.User
def fallback(conn, _params) do
conn
|> put_status(404)
|> text("Not found")
end
def registration_page(conn, params) do
index(conn, params)
end
def api_not_implemented(conn, _params) do
conn
|> put_status(404)
|> json(%{error: "Not implemented"})
end
def empty(conn, _params) do
conn
|> put_status(204)
|> text("")
end
def index(conn, _params) do
{:ok, path} = Pleroma.Frontend.file_path("index.html")
conn
|> put_resp_content_type("text/html")
|> send_file(conn.status || 200, path)
end
def index_with_preload(conn, %{"path" => ["pleroma", "admin"]}) do
redirect(conn, to: "/pleroma/admin/")
end
def index_with_preload(conn, params) do
index_with_generated_data(conn, params, [:preload])
end
def index_with_meta(conn, %{"maybe_nickname_or_id" => maybe_nickname_or_id} = params) do
with %User{} = user <- User.get_cached_by_nickname_or_id(maybe_nickname_or_id) do
index_with_meta(conn, %{user: user})
else
nil ->
index(conn, params)
end
end
def index_with_meta(conn, params) do
index_with_generated_data(conn, params, [:metadata, :preload])
end
defp index_with_generated_data(conn, params, generators) do
{:ok, path} = Pleroma.Frontend.file_path("index.html")
{:ok, index_content} = File.read(path)
generated =
Enum.reduce(generators, "", fn generator, acc ->
acc <> generate_data(conn, params, generator)
end)
response = String.replace(index_content, "<!--server-generated-meta-->", generated)
html(conn, response)
end
defp generate_data(conn, params, :preload) do
try do
Pleroma.Web.Preload.build_tags(conn, params)
rescue
e ->
Logger.error(
"Preloading for #{conn.request_path} failed.\n" <>
Exception.format(:error, e, __STACKTRACE__)
)
""
end
end
defp generate_data(conn, params, :metadata) do
try do
Pleroma.Web.Metadata.build_tags(params)
rescue
e ->
Logger.error(
"Metadata rendering for #{conn.request_path} failed.\n" <>
Exception.format(:error, e, __STACKTRACE__)
)
""
end
end
defoverridable api_not_implemented: 2,
empty: 2,
fallback: 2,
index: 2,
index_with_preload: 2,
index_with_meta: 2,
registration_page: 2
end
end
defp action(conn, _opts) do
fe_config = conn.private[:frontend] || Pleroma.Frontend.get_config(:primary)
action_name = action_name(conn)
{controller, action} =
cond do
function_exported?(fe_config["controller"], action_name, 2) ->
{fe_config["controller"], action_name}
true ->
{fe_config["controller"], :fallback}
end
conn
|> put_private(:frontend, fe_config)
|> put_view(Phoenix.Controller.__view__(controller))
|> controller.call(controller.init(action))
end
end
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