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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.MastodonAPI.InstanceView do
   6   use Pleroma.Web, :view
   7
   8   alias Pleroma.Config
   9   alias Pleroma.Web.ActivityPub.MRF
  10
  11   @mastodon_api_level "2.7.2"
  12
  13   def render("show.json", _) do
  14     instance = Config.get(:instance)
  15
  16     %{
  17       uri: Pleroma.Web.base_url(),
  18       title: Keyword.get(instance, :name),
  19       description: Keyword.get(instance, :description),
  20       version: "#{@mastodon_api_level} (compatible; #{Pleroma.Application.named_version()})",
  21       email: Keyword.get(instance, :email),
  22       urls: %{
  23         streaming_api: Pleroma.Web.Endpoint.websocket_url()
  24       },
  25       stats: Pleroma.Stats.get_stats(),
  26       thumbnail:
  27         URI.merge(Pleroma.Web.base_url(), Keyword.get(instance, :instance_thumbnail)) |> to_string,
  28       languages: ["en"],
  29       registrations: Keyword.get(instance, :registrations_open),
  30       approval_required: Keyword.get(instance, :account_approval_required),
  31       # Extra (not present in Mastodon):
  32       max_toot_chars: Keyword.get(instance, :limit),
  33       poll_limits: Keyword.get(instance, :poll_limits),
  34       upload_limit: Keyword.get(instance, :upload_limit),
  35       avatar_upload_limit: Keyword.get(instance, :avatar_upload_limit),
  36       background_upload_limit: Keyword.get(instance, :background_upload_limit),
  37       banner_upload_limit: Keyword.get(instance, :banner_upload_limit),
  38       background_image: Pleroma.Web.base_url() <> Keyword.get(instance, :background_image),
  39       chat_limit: Keyword.get(instance, :chat_limit),
  40       description_limit: Keyword.get(instance, :description_limit),
  41       pleroma: %{
  42         metadata: %{
  43           account_activation_required: Keyword.get(instance, :account_activation_required),
  44           features: features(),
  45           federation: federation(),
  46           fields_limits: fields_limits(),
  47           post_formats: Config.get([:instance, :allowed_post_formats])
  48         },
  49         stats: %{mau: Pleroma.User.active_user_count()},
  50         vapid_public_key: Keyword.get(Pleroma.Web.Push.vapid_config(), :public_key)
  51       }
  52     }
  53   end
  54
  55   def features do
  56     [
  57       "pleroma_api",
  58       "mastodon_api",
  59       "mastodon_api_streaming",
  60       "polls",
  61       "pleroma_explicit_addressing",
  62       "shareable_emoji_packs",
  63       "multifetch",
  64       "pleroma:api/v1/notifications:include_types_filter",
  65       if Config.get([:media_proxy, :enabled]) do
  66         "media_proxy"
  67       end,
  68       if Config.get([:gopher, :enabled]) do
  69         "gopher"
  70       end,
  71       if Config.get([:chat, :enabled]) do
  72         "chat"
  73       end,
  74       if Config.get([:instance, :allow_relay]) do
  75         "relay"
  76       end,
  77       if Config.get([:instance, :safe_dm_mentions]) do
  78         "safe_dm_mentions"
  79       end,
  80       "pleroma_emoji_reactions",
  81       "pleroma_chat_messages"
  82     ]
  83     |> Enum.filter(& &1)
  84   end
  85
  86   def federation do
  87     quarantined = Config.get([:instance, :quarantined_instances], [])
  88
  89     if Config.get([:mrf, :transparency]) do
  90       {:ok, data} = MRF.describe()
  91
  92       data
  93       |> Map.merge(%{quarantined_instances: quarantined})
  94     else
  95       %{}
  96     end
  97     |> Map.put(:enabled, Config.get([:instance, :federating]))
  98   end
  99
 100   def fields_limits do
 101     %{
 102       max_fields: Config.get([:instance, :max_account_fields]),
 103       max_remote_fields: Config.get([:instance, :max_remote_account_fields]),
 104       name_length: Config.get([:instance, :account_field_name_length]),
 105       value_length: Config.get([:instance, :account_field_value_length])
 106     }
 107   end
 108 end