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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   6   use Pleroma.Web, :controller
   7   alias Ecto.Changeset
   8   alias Pleroma.Activity
   9   alias Pleroma.Bookmark
  10   alias Pleroma.Config
  11   alias Pleroma.Conversation.Participation
  12   alias Pleroma.Filter
  13   alias Pleroma.Formatter
  14   alias Pleroma.HTTP
  15   alias Pleroma.Notification
  16   alias Pleroma.Object
  17   alias Pleroma.Object.Fetcher
  18   alias Pleroma.Pagination
  19   alias Pleroma.Repo
  20   alias Pleroma.ScheduledActivity
  21   alias Pleroma.Stats
  22   alias Pleroma.User
  23   alias Pleroma.Web
  24   alias Pleroma.Web.ActivityPub.ActivityPub
  25   alias Pleroma.Web.ActivityPub.Visibility
  26   alias Pleroma.Web.CommonAPI
  27   alias Pleroma.Web.MastodonAPI.AccountView
  28   alias Pleroma.Web.MastodonAPI.AppView
  29   alias Pleroma.Web.MastodonAPI.ConversationView
  30   alias Pleroma.Web.MastodonAPI.FilterView
  31   alias Pleroma.Web.MastodonAPI.ListView
  32   alias Pleroma.Web.MastodonAPI.MastodonAPI
  33   alias Pleroma.Web.MastodonAPI.MastodonView
  34   alias Pleroma.Web.MastodonAPI.NotificationView
  35   alias Pleroma.Web.MastodonAPI.ReportView
  36   alias Pleroma.Web.MastodonAPI.ScheduledActivityView
  37   alias Pleroma.Web.MastodonAPI.StatusView
  38   alias Pleroma.Web.MediaProxy
  39   alias Pleroma.Web.OAuth.App
  40   alias Pleroma.Web.OAuth.Authorization
  41   alias Pleroma.Web.OAuth.Scopes
  42   alias Pleroma.Web.OAuth.Token
  43   alias Pleroma.Web.TwitterAPI.TwitterAPI
  44
  45   alias Pleroma.Web.ControllerHelper
  46   import Ecto.Query
  47
  48   require Logger
  49
  50   plug(
  51     Pleroma.Plugs.RateLimitPlug,
  52     %{
  53       max_requests: Config.get([:app_account_creation, :max_requests]),
  54       interval: Config.get([:app_account_creation, :interval])
  55     }
  56     when action in [:account_register]
  57   )
  58
  59   @local_mastodon_name "Mastodon-Local"
  60
  61   action_fallback(:errors)
  62
  63   def create_app(conn, params) do
  64     scopes = Scopes.fetch_scopes(params, ["read"])
  65
  66     app_attrs =
  67       params
  68       |> Map.drop(["scope", "scopes"])
  69       |> Map.put("scopes", scopes)
  70
  71     with cs <- App.register_changeset(%App{}, app_attrs),
  72          false <- cs.changes[:client_name] == @local_mastodon_name,
  73          {:ok, app} <- Repo.insert(cs) do
  74       conn
  75       |> put_view(AppView)
  76       |> render("show.json", %{app: app})
  77     end
  78   end
  79
  80   defp add_if_present(
  81          map,
  82          params,
  83          params_field,
  84          map_field,
  85          value_function \\ fn x -> {:ok, x} end
  86        ) do
  87     if Map.has_key?(params, params_field) do
  88       case value_function.(params[params_field]) do
  89         {:ok, new_value} -> Map.put(map, map_field, new_value)
  90         :error -> map
  91       end
  92     else
  93       map
  94     end
  95   end
  96
  97   def update_credentials(%{assigns: %{user: user}} = conn, params) do
  98     original_user = user
  99
 100     user_params =
 101       %{}
 102       |> add_if_present(params, "display_name", :name)
 103       |> add_if_present(params, "note", :bio, fn value -> {:ok, User.parse_bio(value, user)} end)
 104       |> add_if_present(params, "avatar", :avatar, fn value ->
 105         with %Plug.Upload{} <- value,
 106              {:ok, object} <- ActivityPub.upload(value, type: :avatar) do
 107           {:ok, object.data}
 108         else
 109           _ -> :error
 110         end
 111       end)
 112
 113     emojis_text = (user_params["display_name"] || "") <> (user_params["note"] || "")
 114
 115     user_info_emojis =
 116       ((user.info.emoji || []) ++ Formatter.get_emoji_map(emojis_text))
 117       |> Enum.dedup()
 118
 119     info_params =
 120       [:no_rich_text, :locked, :hide_followers, :hide_follows, :hide_favorites, :show_role]
 121       |> Enum.reduce(%{}, fn key, acc ->
 122         add_if_present(acc, params, to_string(key), key, fn value ->
 123           {:ok, ControllerHelper.truthy_param?(value)}
 124         end)
 125       end)
 126       |> add_if_present(params, "default_scope", :default_scope)
 127       |> add_if_present(params, "header", :banner, fn value ->
 128         with %Plug.Upload{} <- value,
 129              {:ok, object} <- ActivityPub.upload(value, type: :banner) do
 130           {:ok, object.data}
 131         else
 132           _ -> :error
 133         end
 134       end)
 135       |> Map.put(:emoji, user_info_emojis)
 136
 137     info_cng = User.Info.profile_update(user.info, info_params)
 138
 139     with changeset <- User.update_changeset(user, user_params),
 140          changeset <- Ecto.Changeset.put_embed(changeset, :info, info_cng),
 141          {:ok, user} <- User.update_and_set_cache(changeset) do
 142       if original_user != user do
 143         CommonAPI.update(user)
 144       end
 145
 146       json(conn, AccountView.render("account.json", %{user: user, for: user}))
 147     else
 148       _e ->
 149         conn
 150         |> put_status(403)
 151         |> json(%{error: "Invalid request"})
 152     end
 153   end
 154
 155   def verify_credentials(%{assigns: %{user: user}} = conn, _) do
 156     account = AccountView.render("account.json", %{user: user, for: user})
 157     json(conn, account)
 158   end
 159
 160   def verify_app_credentials(%{assigns: %{user: _user, token: token}} = conn, _) do
 161     with %Token{app: %App{} = app} <- Repo.preload(token, :app) do
 162       conn
 163       |> put_view(AppView)
 164       |> render("short.json", %{app: app})
 165     end
 166   end
 167
 168   def user(%{assigns: %{user: for_user}} = conn, %{"id" => nickname_or_id}) do
 169     with %User{} = user <- User.get_cached_by_nickname_or_id(nickname_or_id),
 170          true <- User.auth_active?(user) || user.id == for_user.id || User.superuser?(for_user) do
 171       account = AccountView.render("account.json", %{user: user, for: for_user})
 172       json(conn, account)
 173     else
 174       _e ->
 175         conn
 176         |> put_status(404)
 177         |> json(%{error: "Can't find user"})
 178     end
 179   end
 180
 181   @mastodon_api_level "2.7.2"
 182
 183   def masto_instance(conn, _params) do
 184     instance = Config.get(:instance)
 185
 186     response = %{
 187       uri: Web.base_url(),
 188       title: Keyword.get(instance, :name),
 189       description: Keyword.get(instance, :description),
 190       version: "#{@mastodon_api_level} (compatible; #{Pleroma.Application.named_version()})",
 191       email: Keyword.get(instance, :email),
 192       urls: %{
 193         streaming_api: Pleroma.Web.Endpoint.websocket_url()
 194       },
 195       stats: Stats.get_stats(),
 196       thumbnail: Web.base_url() <> "/instance/thumbnail.jpeg",
 197       languages: ["en"],
 198       registrations: Pleroma.Config.get([:instance, :registrations_open]),
 199       # Extra (not present in Mastodon):
 200       max_toot_chars: Keyword.get(instance, :limit)
 201     }
 202
 203     json(conn, response)
 204   end
 205
 206   def peers(conn, _params) do
 207     json(conn, Stats.get_peers())
 208   end
 209
 210   defp mastodonized_emoji do
 211     Pleroma.Emoji.get_all()
 212     |> Enum.map(fn {shortcode, relative_url, tags} ->
 213       url = to_string(URI.merge(Web.base_url(), relative_url))
 214
 215       %{
 216         "shortcode" => shortcode,
 217         "static_url" => url,
 218         "visible_in_picker" => true,
 219         "url" => url,
 220         "tags" => tags
 221       }
 222     end)
 223   end
 224
 225   def custom_emojis(conn, _params) do
 226     mastodon_emoji = mastodonized_emoji()
 227     json(conn, mastodon_emoji)
 228   end
 229
 230   defp add_link_headers(conn, method, activities, param \\ nil, params \\ %{}) do
 231     params =
 232       conn.params
 233       |> Map.drop(["since_id", "max_id", "min_id"])
 234       |> Map.merge(params)
 235
 236     last = List.last(activities)
 237
 238     if last do
 239       max_id = last.id
 240
 241       limit =
 242         params
 243         |> Map.get("limit", "20")
 244         |> String.to_integer()
 245
 246       min_id =
 247         if length(activities) <= limit do
 248           activities
 249           |> List.first()
 250           |> Map.get(:id)
 251         else
 252           activities
 253           |> Enum.at(limit * -1)
 254           |> Map.get(:id)
 255         end
 256
 257       {next_url, prev_url} =
 258         if param do
 259           {
 260             mastodon_api_url(
 261               Pleroma.Web.Endpoint,
 262               method,
 263               param,
 264               Map.merge(params, %{max_id: max_id})
 265             ),
 266             mastodon_api_url(
 267               Pleroma.Web.Endpoint,
 268               method,
 269               param,
 270               Map.merge(params, %{min_id: min_id})
 271             )
 272           }
 273         else
 274           {
 275             mastodon_api_url(
 276               Pleroma.Web.Endpoint,
 277               method,
 278               Map.merge(params, %{max_id: max_id})
 279             ),
 280             mastodon_api_url(
 281               Pleroma.Web.Endpoint,
 282               method,
 283               Map.merge(params, %{min_id: min_id})
 284             )
 285           }
 286         end
 287
 288       conn
 289       |> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
 290     else
 291       conn
 292     end
 293   end
 294
 295   def home_timeline(%{assigns: %{user: user}} = conn, params) do
 296     params =
 297       params
 298       |> Map.put("type", ["Create", "Announce"])
 299       |> Map.put("blocking_user", user)
 300       |> Map.put("muting_user", user)
 301       |> Map.put("user", user)
 302
 303     activities =
 304       [user.ap_id | user.following]
 305       |> ActivityPub.fetch_activities(params)
 306       |> Enum.reverse()
 307
 308     conn
 309     |> add_link_headers(:home_timeline, activities)
 310     |> put_view(StatusView)
 311     |> render("index.json", %{activities: activities, for: user, as: :activity})
 312   end
 313
 314   def public_timeline(%{assigns: %{user: user}} = conn, params) do
 315     local_only = params["local"] in [true, "True", "true", "1"]
 316
 317     activities =
 318       params
 319       |> Map.put("type", ["Create", "Announce"])
 320       |> Map.put("local_only", local_only)
 321       |> Map.put("blocking_user", user)
 322       |> Map.put("muting_user", user)
 323       |> ActivityPub.fetch_public_activities()
 324       |> Enum.reverse()
 325
 326     conn
 327     |> add_link_headers(:public_timeline, activities, false, %{"local" => local_only})
 328     |> put_view(StatusView)
 329     |> render("index.json", %{activities: activities, for: user, as: :activity})
 330   end
 331
 332   def user_statuses(%{assigns: %{user: reading_user}} = conn, params) do
 333     with %User{} = user <- User.get_cached_by_nickname_or_id(params["id"]) do
 334       activities = ActivityPub.fetch_user_activities(user, reading_user, params)
 335
 336       conn
 337       |> add_link_headers(:user_statuses, activities, params["id"])
 338       |> put_view(StatusView)
 339       |> render("index.json", %{
 340         activities: activities,
 341         for: reading_user,
 342         as: :activity
 343       })
 344     end
 345   end
 346
 347   def dm_timeline(%{assigns: %{user: user}} = conn, params) do
 348     params =
 349       params
 350       |> Map.put("type", "Create")
 351       |> Map.put("blocking_user", user)
 352       |> Map.put("user", user)
 353       |> Map.put(:visibility, "direct")
 354
 355     activities =
 356       [user.ap_id]
 357       |> ActivityPub.fetch_activities_query(params)
 358       |> Pagination.fetch_paginated(params)
 359
 360     conn
 361     |> add_link_headers(:dm_timeline, activities)
 362     |> put_view(StatusView)
 363     |> render("index.json", %{activities: activities, for: user, as: :activity})
 364   end
 365
 366   def get_status(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 367     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 368          true <- Visibility.visible_for_user?(activity, user) do
 369       conn
 370       |> put_view(StatusView)
 371       |> try_render("status.json", %{activity: activity, for: user})
 372     end
 373   end
 374
 375   def get_context(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 376     with %Activity{} = activity <- Activity.get_by_id(id),
 377          activities <-
 378            ActivityPub.fetch_activities_for_context(activity.data["context"], %{
 379              "blocking_user" => user,
 380              "user" => user
 381            }),
 382          activities <-
 383            activities |> Enum.filter(fn %{id: aid} -> to_string(aid) != to_string(id) end),
 384          activities <-
 385            activities |> Enum.filter(fn %{data: %{"type" => type}} -> type == "Create" end),
 386          grouped_activities <- Enum.group_by(activities, fn %{id: id} -> id < activity.id end) do
 387       result = %{
 388         ancestors:
 389           StatusView.render(
 390             "index.json",
 391             for: user,
 392             activities: grouped_activities[true] || [],
 393             as: :activity
 394           )
 395           |> Enum.reverse(),
 396         # credo:disable-for-previous-line Credo.Check.Refactor.PipeChainStart
 397         descendants:
 398           StatusView.render(
 399             "index.json",
 400             for: user,
 401             activities: grouped_activities[false] || [],
 402             as: :activity
 403           )
 404           |> Enum.reverse()
 405         # credo:disable-for-previous-line Credo.Check.Refactor.PipeChainStart
 406       }
 407
 408       json(conn, result)
 409     end
 410   end
 411
 412   def scheduled_statuses(%{assigns: %{user: user}} = conn, params) do
 413     with scheduled_activities <- MastodonAPI.get_scheduled_activities(user, params) do
 414       conn
 415       |> add_link_headers(:scheduled_statuses, scheduled_activities)
 416       |> put_view(ScheduledActivityView)
 417       |> render("index.json", %{scheduled_activities: scheduled_activities})
 418     end
 419   end
 420
 421   def show_scheduled_status(%{assigns: %{user: user}} = conn, %{"id" => scheduled_activity_id}) do
 422     with %ScheduledActivity{} = scheduled_activity <-
 423            ScheduledActivity.get(user, scheduled_activity_id) do
 424       conn
 425       |> put_view(ScheduledActivityView)
 426       |> render("show.json", %{scheduled_activity: scheduled_activity})
 427     else
 428       _ -> {:error, :not_found}
 429     end
 430   end
 431
 432   def update_scheduled_status(
 433         %{assigns: %{user: user}} = conn,
 434         %{"id" => scheduled_activity_id} = params
 435       ) do
 436     with %ScheduledActivity{} = scheduled_activity <-
 437            ScheduledActivity.get(user, scheduled_activity_id),
 438          {:ok, scheduled_activity} <- ScheduledActivity.update(scheduled_activity, params) do
 439       conn
 440       |> put_view(ScheduledActivityView)
 441       |> render("show.json", %{scheduled_activity: scheduled_activity})
 442     else
 443       nil -> {:error, :not_found}
 444       error -> error
 445     end
 446   end
 447
 448   def delete_scheduled_status(%{assigns: %{user: user}} = conn, %{"id" => scheduled_activity_id}) do
 449     with %ScheduledActivity{} = scheduled_activity <-
 450            ScheduledActivity.get(user, scheduled_activity_id),
 451          {:ok, scheduled_activity} <- ScheduledActivity.delete(scheduled_activity) do
 452       conn
 453       |> put_view(ScheduledActivityView)
 454       |> render("show.json", %{scheduled_activity: scheduled_activity})
 455     else
 456       nil -> {:error, :not_found}
 457       error -> error
 458     end
 459   end
 460
 461   def post_status(conn, %{"status" => "", "media_ids" => media_ids} = params)
 462       when length(media_ids) > 0 do
 463     params =
 464       params
 465       |> Map.put("status", ".")
 466
 467     post_status(conn, params)
 468   end
 469
 470   def post_status(%{assigns: %{user: user}} = conn, %{"status" => _} = params) do
 471     params =
 472       params
 473       |> Map.put("in_reply_to_status_id", params["in_reply_to_id"])
 474
 475     idempotency_key =
 476       case get_req_header(conn, "idempotency-key") do
 477         [key] -> key
 478         _ -> Ecto.UUID.generate()
 479       end
 480
 481     scheduled_at = params["scheduled_at"]
 482
 483     if scheduled_at && ScheduledActivity.far_enough?(scheduled_at) do
 484       with {:ok, scheduled_activity} <-
 485              ScheduledActivity.create(user, %{"params" => params, "scheduled_at" => scheduled_at}) do
 486         conn
 487         |> put_view(ScheduledActivityView)
 488         |> render("show.json", %{scheduled_activity: scheduled_activity})
 489       end
 490     else
 491       params = Map.drop(params, ["scheduled_at"])
 492
 493       {:ok, activity} =
 494         Cachex.fetch!(:idempotency_cache, idempotency_key, fn _ ->
 495           CommonAPI.post(user, params)
 496         end)
 497
 498       conn
 499       |> put_view(StatusView)
 500       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 501     end
 502   end
 503
 504   def delete_status(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 505     with {:ok, %Activity{}} <- CommonAPI.delete(id, user) do
 506       json(conn, %{})
 507     else
 508       _e ->
 509         conn
 510         |> put_status(403)
 511         |> json(%{error: "Can't delete this post"})
 512     end
 513   end
 514
 515   def reblog_status(%{assigns: %{user: user}} = conn, %{"id" => ap_id_or_id}) do
 516     with {:ok, announce, _activity} <- CommonAPI.repeat(ap_id_or_id, user),
 517          %Activity{} = announce <- Activity.normalize(announce.data) do
 518       conn
 519       |> put_view(StatusView)
 520       |> try_render("status.json", %{activity: announce, for: user, as: :activity})
 521     end
 522   end
 523
 524   def unreblog_status(%{assigns: %{user: user}} = conn, %{"id" => ap_id_or_id}) do
 525     with {:ok, _unannounce, %{data: %{"id" => id}}} <- CommonAPI.unrepeat(ap_id_or_id, user),
 526          %Activity{} = activity <- Activity.get_create_by_object_ap_id_with_object(id) do
 527       conn
 528       |> put_view(StatusView)
 529       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 530     end
 531   end
 532
 533   def fav_status(%{assigns: %{user: user}} = conn, %{"id" => ap_id_or_id}) do
 534     with {:ok, _fav, %{data: %{"id" => id}}} <- CommonAPI.favorite(ap_id_or_id, user),
 535          %Activity{} = activity <- Activity.get_create_by_object_ap_id(id) do
 536       conn
 537       |> put_view(StatusView)
 538       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 539     end
 540   end
 541
 542   def unfav_status(%{assigns: %{user: user}} = conn, %{"id" => ap_id_or_id}) do
 543     with {:ok, _, _, %{data: %{"id" => id}}} <- CommonAPI.unfavorite(ap_id_or_id, user),
 544          %Activity{} = activity <- Activity.get_create_by_object_ap_id(id) do
 545       conn
 546       |> put_view(StatusView)
 547       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 548     end
 549   end
 550
 551   def pin_status(%{assigns: %{user: user}} = conn, %{"id" => ap_id_or_id}) do
 552     with {:ok, activity} <- CommonAPI.pin(ap_id_or_id, user) do
 553       conn
 554       |> put_view(StatusView)
 555       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 556     else
 557       {:error, reason} ->
 558         conn
 559         |> put_resp_content_type("application/json")
 560         |> send_resp(:bad_request, Jason.encode!(%{"error" => reason}))
 561     end
 562   end
 563
 564   def unpin_status(%{assigns: %{user: user}} = conn, %{"id" => ap_id_or_id}) do
 565     with {:ok, activity} <- CommonAPI.unpin(ap_id_or_id, user) do
 566       conn
 567       |> put_view(StatusView)
 568       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 569     end
 570   end
 571
 572   def bookmark_status(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 573     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 574          %User{} = user <- User.get_cached_by_nickname(user.nickname),
 575          true <- Visibility.visible_for_user?(activity, user),
 576          {:ok, _bookmark} <- Bookmark.create(user.id, activity.id) do
 577       conn
 578       |> put_view(StatusView)
 579       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 580     end
 581   end
 582
 583   def unbookmark_status(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 584     with %Activity{} = activity <- Activity.get_by_id_with_object(id),
 585          %User{} = user <- User.get_cached_by_nickname(user.nickname),
 586          true <- Visibility.visible_for_user?(activity, user),
 587          {:ok, _bookmark} <- Bookmark.destroy(user.id, activity.id) do
 588       conn
 589       |> put_view(StatusView)
 590       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 591     end
 592   end
 593
 594   def mute_conversation(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 595     activity = Activity.get_by_id(id)
 596
 597     with {:ok, activity} <- CommonAPI.add_mute(user, activity) do
 598       conn
 599       |> put_view(StatusView)
 600       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 601     else
 602       {:error, reason} ->
 603         conn
 604         |> put_resp_content_type("application/json")
 605         |> send_resp(:bad_request, Jason.encode!(%{"error" => reason}))
 606     end
 607   end
 608
 609   def unmute_conversation(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 610     activity = Activity.get_by_id(id)
 611
 612     with {:ok, activity} <- CommonAPI.remove_mute(user, activity) do
 613       conn
 614       |> put_view(StatusView)
 615       |> try_render("status.json", %{activity: activity, for: user, as: :activity})
 616     end
 617   end
 618
 619   def notifications(%{assigns: %{user: user}} = conn, params) do
 620     notifications = MastodonAPI.get_notifications(user, params)
 621
 622     conn
 623     |> add_link_headers(:notifications, notifications)
 624     |> put_view(NotificationView)
 625     |> render("index.json", %{notifications: notifications, for: user})
 626   end
 627
 628   def get_notification(%{assigns: %{user: user}} = conn, %{"id" => id} = _params) do
 629     with {:ok, notification} <- Notification.get(user, id) do
 630       conn
 631       |> put_view(NotificationView)
 632       |> render("show.json", %{notification: notification, for: user})
 633     else
 634       {:error, reason} ->
 635         conn
 636         |> put_resp_content_type("application/json")
 637         |> send_resp(403, Jason.encode!(%{"error" => reason}))
 638     end
 639   end
 640
 641   def clear_notifications(%{assigns: %{user: user}} = conn, _params) do
 642     Notification.clear(user)
 643     json(conn, %{})
 644   end
 645
 646   def dismiss_notification(%{assigns: %{user: user}} = conn, %{"id" => id} = _params) do
 647     with {:ok, _notif} <- Notification.dismiss(user, id) do
 648       json(conn, %{})
 649     else
 650       {:error, reason} ->
 651         conn
 652         |> put_resp_content_type("application/json")
 653         |> send_resp(403, Jason.encode!(%{"error" => reason}))
 654     end
 655   end
 656
 657   def destroy_multiple(%{assigns: %{user: user}} = conn, %{"ids" => ids} = _params) do
 658     Notification.destroy_multiple(user, ids)
 659     json(conn, %{})
 660   end
 661
 662   def relationships(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 663     id = List.wrap(id)
 664     q = from(u in User, where: u.id in ^id)
 665     targets = Repo.all(q)
 666
 667     conn
 668     |> put_view(AccountView)
 669     |> render("relationships.json", %{user: user, targets: targets})
 670   end
 671
 672   # Instead of returning a 400 when no "id" params is present, Mastodon returns an empty array.
 673   def relationships(%{assigns: %{user: _user}} = conn, _), do: json(conn, [])
 674
 675   def update_media(%{assigns: %{user: user}} = conn, data) do
 676     with %Object{} = object <- Repo.get(Object, data["id"]),
 677          true <- Object.authorize_mutation(object, user),
 678          true <- is_binary(data["description"]),
 679          description <- data["description"] do
 680       new_data = %{object.data | "name" => description}
 681
 682       {:ok, _} =
 683         object
 684         |> Object.change(%{data: new_data})
 685         |> Repo.update()
 686
 687       attachment_data = Map.put(new_data, "id", object.id)
 688
 689       conn
 690       |> put_view(StatusView)
 691       |> render("attachment.json", %{attachment: attachment_data})
 692     end
 693   end
 694
 695   def upload(%{assigns: %{user: user}} = conn, %{"file" => file} = data) do
 696     with {:ok, object} <-
 697            ActivityPub.upload(
 698              file,
 699              actor: User.ap_id(user),
 700              description: Map.get(data, "description")
 701            ) do
 702       attachment_data = Map.put(object.data, "id", object.id)
 703
 704       conn
 705       |> put_view(StatusView)
 706       |> render("attachment.json", %{attachment: attachment_data})
 707     end
 708   end
 709
 710   def set_mascot(%{assigns: %{user: user}} = conn, %{"file" => file}) do
 711     with {:ok, object} <- ActivityPub.upload(file, actor: User.ap_id(user)),
 712          %{} = attachment_data <- Map.put(object.data, "id", object.id),
 713          %{type: type} = rendered <-
 714            StatusView.render("attachment.json", %{attachment: attachment_data}) do
 715       # Reject if not an image
 716       if type == "image" do
 717         # Sure!
 718         # Save to the user's info
 719         info_changeset = User.Info.mascot_update(user.info, rendered)
 720
 721         user_changeset =
 722           user
 723           |> Ecto.Changeset.change()
 724           |> Ecto.Changeset.put_embed(:info, info_changeset)
 725
 726         {:ok, _user} = User.update_and_set_cache(user_changeset)
 727
 728         conn
 729         |> json(rendered)
 730       else
 731         conn
 732         |> put_resp_content_type("application/json")
 733         |> send_resp(415, Jason.encode!(%{"error" => "mascots can only be images"}))
 734       end
 735     end
 736   end
 737
 738   def get_mascot(%{assigns: %{user: user}} = conn, _params) do
 739     mascot = User.get_mascot(user)
 740
 741     conn
 742     |> json(mascot)
 743   end
 744
 745   def favourited_by(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 746     with %Activity{data: %{"object" => object}} <- Repo.get(Activity, id),
 747          %Object{data: %{"likes" => likes}} <- Object.normalize(object) do
 748       q = from(u in User, where: u.ap_id in ^likes)
 749       users = Repo.all(q)
 750
 751       conn
 752       |> put_view(AccountView)
 753       |> render(AccountView, "accounts.json", %{for: user, users: users, as: :user})
 754     else
 755       _ -> json(conn, [])
 756     end
 757   end
 758
 759   def reblogged_by(%{assigns: %{user: user}} = conn, %{"id" => id}) do
 760     with %Activity{data: %{"object" => object}} <- Repo.get(Activity, id),
 761          %Object{data: %{"announcements" => announces}} <- Object.normalize(object) do
 762       q = from(u in User, where: u.ap_id in ^announces)
 763       users = Repo.all(q)
 764
 765       conn
 766       |> put_view(AccountView)
 767       |> render("accounts.json", %{for: user, users: users, as: :user})
 768     else
 769       _ -> json(conn, [])
 770     end
 771   end
 772
 773   def hashtag_timeline(%{assigns: %{user: user}} = conn, params) do
 774     local_only = params["local"] in [true, "True", "true", "1"]
 775
 776     tags =
 777       [params["tag"], params["any"]]
 778       |> List.flatten()
 779       |> Enum.uniq()
 780       |> Enum.filter(& &1)
 781       |> Enum.map(&String.downcase(&1))
 782
 783     tag_all =
 784       params["all"] ||
 785         []
 786         |> Enum.map(&String.downcase(&1))
 787
 788     tag_reject =
 789       params["none"] ||
 790         []
 791         |> Enum.map(&String.downcase(&1))
 792
 793     activities =
 794       params
 795       |> Map.put("type", "Create")
 796       |> Map.put("local_only", local_only)
 797       |> Map.put("blocking_user", user)
 798       |> Map.put("muting_user", user)
 799       |> Map.put("tag", tags)
 800       |> Map.put("tag_all", tag_all)
 801       |> Map.put("tag_reject", tag_reject)
 802       |> ActivityPub.fetch_public_activities()
 803       |> Enum.reverse()
 804
 805     conn
 806     |> add_link_headers(:hashtag_timeline, activities, params["tag"], %{"local" => local_only})
 807     |> put_view(StatusView)
 808     |> render("index.json", %{activities: activities, for: user, as: :activity})
 809   end
 810
 811   def followers(%{assigns: %{user: for_user}} = conn, %{"id" => id} = params) do
 812     with %User{} = user <- User.get_cached_by_id(id),
 813          followers <- MastodonAPI.get_followers(user, params) do
 814       followers =
 815         cond do
 816           for_user && user.id == for_user.id -> followers
 817           user.info.hide_followers -> []
 818           true -> followers
 819         end
 820
 821       conn
 822       |> add_link_headers(:followers, followers, user)
 823       |> put_view(AccountView)
 824       |> render("accounts.json", %{for: for_user, users: followers, as: :user})
 825     end
 826   end
 827
 828   def following(%{assigns: %{user: for_user}} = conn, %{"id" => id} = params) do
 829     with %User{} = user <- User.get_cached_by_id(id),
 830          followers <- MastodonAPI.get_friends(user, params) do
 831       followers =
 832         cond do
 833           for_user && user.id == for_user.id -> followers
 834           user.info.hide_follows -> []
 835           true -> followers
 836         end
 837
 838       conn
 839       |> add_link_headers(:following, followers, user)
 840       |> put_view(AccountView)
 841       |> render("accounts.json", %{for: for_user, users: followers, as: :user})
 842     end
 843   end
 844
 845   def follow_requests(%{assigns: %{user: followed}} = conn, _params) do
 846     with {:ok, follow_requests} <- User.get_follow_requests(followed) do
 847       conn
 848       |> put_view(AccountView)
 849       |> render("accounts.json", %{for: followed, users: follow_requests, as: :user})
 850     end
 851   end
 852
 853   def authorize_follow_request(%{assigns: %{user: followed}} = conn, %{"id" => id}) do
 854     with %User{} = follower <- User.get_cached_by_id(id),
 855          {:ok, follower} <- CommonAPI.accept_follow_request(follower, followed) do
 856       conn
 857       |> put_view(AccountView)
 858       |> render("relationship.json", %{user: followed, target: follower})
 859     else
 860       {:error, message} ->
 861         conn
 862         |> put_resp_content_type("application/json")
 863         |> send_resp(403, Jason.encode!(%{"error" => message}))
 864     end
 865   end
 866
 867   def reject_follow_request(%{assigns: %{user: followed}} = conn, %{"id" => id}) do
 868     with %User{} = follower <- User.get_cached_by_id(id),
 869          {:ok, follower} <- CommonAPI.reject_follow_request(follower, followed) do
 870       conn
 871       |> put_view(AccountView)
 872       |> render("relationship.json", %{user: followed, target: follower})
 873     else
 874       {:error, message} ->
 875         conn
 876         |> put_resp_content_type("application/json")
 877         |> send_resp(403, Jason.encode!(%{"error" => message}))
 878     end
 879   end
 880
 881   def follow(%{assigns: %{user: follower}} = conn, %{"id" => id}) do
 882     with {_, %User{} = followed} <- {:followed, User.get_cached_by_id(id)},
 883          {_, true} <- {:followed, follower.id != followed.id},
 884          {:ok, follower} <- MastodonAPI.follow(follower, followed, conn.params) do
 885       conn
 886       |> put_view(AccountView)
 887       |> render("relationship.json", %{user: follower, target: followed})
 888     else
 889       {:followed, _} ->
 890         {:error, :not_found}
 891
 892       {:error, message} ->
 893         conn
 894         |> put_resp_content_type("application/json")
 895         |> send_resp(403, Jason.encode!(%{"error" => message}))
 896     end
 897   end
 898
 899   def follow(%{assigns: %{user: follower}} = conn, %{"uri" => uri}) do
 900     with {_, %User{} = followed} <- {:followed, User.get_cached_by_nickname(uri)},
 901          {_, true} <- {:followed, follower.id != followed.id},
 902          {:ok, follower, followed, _} <- CommonAPI.follow(follower, followed) do
 903       conn
 904       |> put_view(AccountView)
 905       |> render("account.json", %{user: followed, for: follower})
 906     else
 907       {:followed, _} ->
 908         {:error, :not_found}
 909
 910       {:error, message} ->
 911         conn
 912         |> put_resp_content_type("application/json")
 913         |> send_resp(403, Jason.encode!(%{"error" => message}))
 914     end
 915   end
 916
 917   def unfollow(%{assigns: %{user: follower}} = conn, %{"id" => id}) do
 918     with {_, %User{} = followed} <- {:followed, User.get_cached_by_id(id)},
 919          {_, true} <- {:followed, follower.id != followed.id},
 920          {:ok, follower} <- CommonAPI.unfollow(follower, followed) do
 921       conn
 922       |> put_view(AccountView)
 923       |> render("relationship.json", %{user: follower, target: followed})
 924     else
 925       {:followed, _} ->
 926         {:error, :not_found}
 927
 928       error ->
 929         error
 930     end
 931   end
 932
 933   def mute(%{assigns: %{user: muter}} = conn, %{"id" => id}) do
 934     with %User{} = muted <- User.get_cached_by_id(id),
 935          {:ok, muter} <- User.mute(muter, muted) do
 936       conn
 937       |> put_view(AccountView)
 938       |> render("relationship.json", %{user: muter, target: muted})
 939     else
 940       {:error, message} ->
 941         conn
 942         |> put_resp_content_type("application/json")
 943         |> send_resp(403, Jason.encode!(%{"error" => message}))
 944     end
 945   end
 946
 947   def unmute(%{assigns: %{user: muter}} = conn, %{"id" => id}) do
 948     with %User{} = muted <- User.get_cached_by_id(id),
 949          {:ok, muter} <- User.unmute(muter, muted) do
 950       conn
 951       |> put_view(AccountView)
 952       |> render("relationship.json", %{user: muter, target: muted})
 953     else
 954       {:error, message} ->
 955         conn
 956         |> put_resp_content_type("application/json")
 957         |> send_resp(403, Jason.encode!(%{"error" => message}))
 958     end
 959   end
 960
 961   def mutes(%{assigns: %{user: user}} = conn, _) do
 962     with muted_accounts <- User.muted_users(user) do
 963       res = AccountView.render("accounts.json", users: muted_accounts, for: user, as: :user)
 964       json(conn, res)
 965     end
 966   end
 967
 968   def block(%{assigns: %{user: blocker}} = conn, %{"id" => id}) do
 969     with %User{} = blocked <- User.get_cached_by_id(id),
 970          {:ok, blocker} <- User.block(blocker, blocked),
 971          {:ok, _activity} <- ActivityPub.block(blocker, blocked) do
 972       conn
 973       |> put_view(AccountView)
 974       |> render("relationship.json", %{user: blocker, target: blocked})
 975     else
 976       {:error, message} ->
 977         conn
 978         |> put_resp_content_type("application/json")
 979         |> send_resp(403, Jason.encode!(%{"error" => message}))
 980     end
 981   end
 982
 983   def unblock(%{assigns: %{user: blocker}} = conn, %{"id" => id}) do
 984     with %User{} = blocked <- User.get_cached_by_id(id),
 985          {:ok, blocker} <- User.unblock(blocker, blocked),
 986          {:ok, _activity} <- ActivityPub.unblock(blocker, blocked) do
 987       conn
 988       |> put_view(AccountView)
 989       |> render("relationship.json", %{user: blocker, target: blocked})
 990     else
 991       {:error, message} ->
 992         conn
 993         |> put_resp_content_type("application/json")
 994         |> send_resp(403, Jason.encode!(%{"error" => message}))
 995     end
 996   end
 997
 998   def blocks(%{assigns: %{user: user}} = conn, _) do
 999     with blocked_accounts <- User.blocked_users(user) do
1000       res = AccountView.render("accounts.json", users: blocked_accounts, for: user, as: :user)
1001       json(conn, res)
1002     end
1003   end
1004
1005   def domain_blocks(%{assigns: %{user: %{info: info}}} = conn, _) do
1006     json(conn, info.domain_blocks || [])
1007   end
1008
1009   def block_domain(%{assigns: %{user: blocker}} = conn, %{"domain" => domain}) do
1010     User.block_domain(blocker, domain)
1011     json(conn, %{})
1012   end
1013
1014   def unblock_domain(%{assigns: %{user: blocker}} = conn, %{"domain" => domain}) do
1015     User.unblock_domain(blocker, domain)
1016     json(conn, %{})
1017   end
1018
1019   def subscribe(%{assigns: %{user: user}} = conn, %{"id" => id}) do
1020     with %User{} = subscription_target <- User.get_cached_by_id(id),
1021          {:ok, subscription_target} = User.subscribe(user, subscription_target) do
1022       conn
1023       |> put_view(AccountView)
1024       |> render("relationship.json", %{user: user, target: subscription_target})
1025     else
1026       {:error, message} ->
1027         conn
1028         |> put_resp_content_type("application/json")
1029         |> send_resp(403, Jason.encode!(%{"error" => message}))
1030     end
1031   end
1032
1033   def unsubscribe(%{assigns: %{user: user}} = conn, %{"id" => id}) do
1034     with %User{} = subscription_target <- User.get_cached_by_id(id),
1035          {:ok, subscription_target} = User.unsubscribe(user, subscription_target) do
1036       conn
1037       |> put_view(AccountView)
1038       |> render("relationship.json", %{user: user, target: subscription_target})
1039     else
1040       {:error, message} ->
1041         conn
1042         |> put_resp_content_type("application/json")
1043         |> send_resp(403, Jason.encode!(%{"error" => message}))
1044     end
1045   end
1046
1047   def status_search_query_with_gin(q, query) do
1048     from([a, o] in q,
1049       where:
1050         fragment(
1051           "to_tsvector('english', ?->>'content') @@ plainto_tsquery('english', ?)",
1052           o.data,
1053           ^query
1054         ),
1055       order_by: [desc: :id]
1056     )
1057   end
1058
1059   def status_search_query_with_rum(q, query) do
1060     from([a, o] in q,
1061       where:
1062         fragment(
1063           "? @@ plainto_tsquery('english', ?)",
1064           o.fts_content,
1065           ^query
1066         ),
1067       order_by: [fragment("? <=> now()::date", o.inserted_at)]
1068     )
1069   end
1070
1071   def status_search(user, query) do
1072     fetched =
1073       if Regex.match?(~r/https?:/, query) do
1074         with {:ok, object} <- Fetcher.fetch_object_from_id(query),
1075              %Activity{} = activity <- Activity.get_create_by_object_ap_id(object.data["id"]),
1076              true <- Visibility.visible_for_user?(activity, user) do
1077           [activity]
1078         else
1079           _e -> []
1080         end
1081       end || []
1082
1083     q =
1084       from([a, o] in Activity.with_preloaded_object(Activity),
1085         where: fragment("?->>'type' = 'Create'", a.data),
1086         where: "https://www.w3.org/ns/activitystreams#Public" in a.recipients,
1087         limit: 40
1088       )
1089
1090     q =
1091       if Pleroma.Config.get([:database, :rum_enabled]) do
1092         status_search_query_with_rum(q, query)
1093       else
1094         status_search_query_with_gin(q, query)
1095       end
1096
1097     Repo.all(q) ++ fetched
1098   end
1099
1100   def search2(%{assigns: %{user: user}} = conn, %{"q" => query} = params) do
1101     accounts = User.search(query, resolve: params["resolve"] == "true", for_user: user)
1102
1103     statuses = status_search(user, query)
1104
1105     tags_path = Web.base_url() <> "/tag/"
1106
1107     tags =
1108       query
1109       |> String.split()
1110       |> Enum.uniq()
1111       |> Enum.filter(fn tag -> String.starts_with?(tag, "#") end)
1112       |> Enum.map(fn tag -> String.slice(tag, 1..-1) end)
1113       |> Enum.map(fn tag -> %{name: tag, url: tags_path <> tag} end)
1114
1115     res = %{
1116       "accounts" => AccountView.render("accounts.json", users: accounts, for: user, as: :user),
1117       "statuses" =>
1118         StatusView.render("index.json", activities: statuses, for: user, as: :activity),
1119       "hashtags" => tags
1120     }
1121
1122     json(conn, res)
1123   end
1124
1125   def search(%{assigns: %{user: user}} = conn, %{"q" => query} = params) do
1126     accounts = User.search(query, resolve: params["resolve"] == "true", for_user: user)
1127
1128     statuses = status_search(user, query)
1129
1130     tags =
1131       query
1132       |> String.split()
1133       |> Enum.uniq()
1134       |> Enum.filter(fn tag -> String.starts_with?(tag, "#") end)
1135       |> Enum.map(fn tag -> String.slice(tag, 1..-1) end)
1136
1137     res = %{
1138       "accounts" => AccountView.render("accounts.json", users: accounts, for: user, as: :user),
1139       "statuses" =>
1140         StatusView.render("index.json", activities: statuses, for: user, as: :activity),
1141       "hashtags" => tags
1142     }
1143
1144     json(conn, res)
1145   end
1146
1147   def account_search(%{assigns: %{user: user}} = conn, %{"q" => query} = params) do
1148     accounts = User.search(query, resolve: params["resolve"] == "true", for_user: user)
1149
1150     res = AccountView.render("accounts.json", users: accounts, for: user, as: :user)
1151
1152     json(conn, res)
1153   end
1154
1155   def favourites(%{assigns: %{user: user}} = conn, params) do
1156     params =
1157       params
1158       |> Map.put("type", "Create")
1159       |> Map.put("favorited_by", user.ap_id)
1160       |> Map.put("blocking_user", user)
1161
1162     activities =
1163       ActivityPub.fetch_activities([], params)
1164       |> Enum.reverse()
1165
1166     conn
1167     |> add_link_headers(:favourites, activities)
1168     |> put_view(StatusView)
1169     |> render("index.json", %{activities: activities, for: user, as: :activity})
1170   end
1171
1172   def user_favourites(%{assigns: %{user: for_user}} = conn, %{"id" => id} = params) do
1173     with %User{} = user <- User.get_by_id(id),
1174          false <- user.info.hide_favorites do
1175       params =
1176         params
1177         |> Map.put("type", "Create")
1178         |> Map.put("favorited_by", user.ap_id)
1179         |> Map.put("blocking_user", for_user)
1180
1181       recipients =
1182         if for_user do
1183           ["https://www.w3.org/ns/activitystreams#Public"] ++
1184             [for_user.ap_id | for_user.following]
1185         else
1186           ["https://www.w3.org/ns/activitystreams#Public"]
1187         end
1188
1189       activities =
1190         recipients
1191         |> ActivityPub.fetch_activities(params)
1192         |> Enum.reverse()
1193
1194       conn
1195       |> add_link_headers(:favourites, activities)
1196       |> put_view(StatusView)
1197       |> render("index.json", %{activities: activities, for: for_user, as: :activity})
1198     else
1199       nil ->
1200         {:error, :not_found}
1201
1202       true ->
1203         conn
1204         |> put_status(403)
1205         |> json(%{error: "Can't get favorites"})
1206     end
1207   end
1208
1209   def bookmarks(%{assigns: %{user: user}} = conn, params) do
1210     user = User.get_cached_by_id(user.id)
1211
1212     bookmarks =
1213       Bookmark.for_user_query(user.id)
1214       |> Pagination.fetch_paginated(params)
1215
1216     activities =
1217       bookmarks
1218       |> Enum.map(fn b -> Map.put(b.activity, :bookmark, Map.delete(b, :activity)) end)
1219
1220     conn
1221     |> add_link_headers(:bookmarks, bookmarks)
1222     |> put_view(StatusView)
1223     |> render("index.json", %{activities: activities, for: user, as: :activity})
1224   end
1225
1226   def get_lists(%{assigns: %{user: user}} = conn, opts) do
1227     lists = Pleroma.List.for_user(user, opts)
1228     res = ListView.render("lists.json", lists: lists)
1229     json(conn, res)
1230   end
1231
1232   def get_list(%{assigns: %{user: user}} = conn, %{"id" => id}) do
1233     with %Pleroma.List{} = list <- Pleroma.List.get(id, user) do
1234       res = ListView.render("list.json", list: list)
1235       json(conn, res)
1236     else
1237       _e ->
1238         conn
1239         |> put_status(404)
1240         |> json(%{error: "Record not found"})
1241     end
1242   end
1243
1244   def account_lists(%{assigns: %{user: user}} = conn, %{"id" => account_id}) do
1245     lists = Pleroma.List.get_lists_account_belongs(user, account_id)
1246     res = ListView.render("lists.json", lists: lists)
1247     json(conn, res)
1248   end
1249
1250   def delete_list(%{assigns: %{user: user}} = conn, %{"id" => id}) do
1251     with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
1252          {:ok, _list} <- Pleroma.List.delete(list) do
1253       json(conn, %{})
1254     else
1255       _e ->
1256         json(conn, "error")
1257     end
1258   end
1259
1260   def create_list(%{assigns: %{user: user}} = conn, %{"title" => title}) do
1261     with {:ok, %Pleroma.List{} = list} <- Pleroma.List.create(title, user) do
1262       res = ListView.render("list.json", list: list)
1263       json(conn, res)
1264     end
1265   end
1266
1267   def add_to_list(%{assigns: %{user: user}} = conn, %{"id" => id, "account_ids" => accounts}) do
1268     accounts
1269     |> Enum.each(fn account_id ->
1270       with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
1271            %User{} = followed <- User.get_cached_by_id(account_id) do
1272         Pleroma.List.follow(list, followed)
1273       end
1274     end)
1275
1276     json(conn, %{})
1277   end
1278
1279   def remove_from_list(%{assigns: %{user: user}} = conn, %{"id" => id, "account_ids" => accounts}) do
1280     accounts
1281     |> Enum.each(fn account_id ->
1282       with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
1283            %User{} = followed <- User.get_cached_by_id(account_id) do
1284         Pleroma.List.unfollow(list, followed)
1285       end
1286     end)
1287
1288     json(conn, %{})
1289   end
1290
1291   def list_accounts(%{assigns: %{user: user}} = conn, %{"id" => id}) do
1292     with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
1293          {:ok, users} = Pleroma.List.get_following(list) do
1294       conn
1295       |> put_view(AccountView)
1296       |> render("accounts.json", %{for: user, users: users, as: :user})
1297     end
1298   end
1299
1300   def rename_list(%{assigns: %{user: user}} = conn, %{"id" => id, "title" => title}) do
1301     with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
1302          {:ok, list} <- Pleroma.List.rename(list, title) do
1303       res = ListView.render("list.json", list: list)
1304       json(conn, res)
1305     else
1306       _e ->
1307         json(conn, "error")
1308     end
1309   end
1310
1311   def list_timeline(%{assigns: %{user: user}} = conn, %{"list_id" => id} = params) do
1312     with %Pleroma.List{title: _title, following: following} <- Pleroma.List.get(id, user) do
1313       params =
1314         params
1315         |> Map.put("type", "Create")
1316         |> Map.put("blocking_user", user)
1317         |> Map.put("muting_user", user)
1318
1319       # we must filter the following list for the user to avoid leaking statuses the user
1320       # does not actually have permission to see (for more info, peruse security issue #270).
1321       activities =
1322         following
1323         |> Enum.filter(fn x -> x in user.following end)
1324         |> ActivityPub.fetch_activities_bounded(following, params)
1325         |> Enum.reverse()
1326
1327       conn
1328       |> put_view(StatusView)
1329       |> render("index.json", %{activities: activities, for: user, as: :activity})
1330     else
1331       _e ->
1332         conn
1333         |> put_status(403)
1334         |> json(%{error: "Error."})
1335     end
1336   end
1337
1338   def index(%{assigns: %{user: user}} = conn, _params) do
1339     token = get_session(conn, :oauth_token)
1340
1341     if user && token do
1342       mastodon_emoji = mastodonized_emoji()
1343
1344       limit = Config.get([:instance, :limit])
1345
1346       accounts =
1347         Map.put(%{}, user.id, AccountView.render("account.json", %{user: user, for: user}))
1348
1349       flavour = get_user_flavour(user)
1350
1351       initial_state =
1352         %{
1353           meta: %{
1354             streaming_api_base_url: Pleroma.Web.Endpoint.websocket_url(),
1355             access_token: token,
1356             locale: "en",
1357             domain: Pleroma.Web.Endpoint.host(),
1358             admin: "1",
1359             me: "#{user.id}",
1360             unfollow_modal: false,
1361             boost_modal: false,
1362             delete_modal: true,
1363             auto_play_gif: false,
1364             display_sensitive_media: false,
1365             reduce_motion: false,
1366             max_toot_chars: limit,
1367             mascot: User.get_mascot(user)["url"]
1368           },
1369           rights: %{
1370             delete_others_notice: present?(user.info.is_moderator),
1371             admin: present?(user.info.is_admin)
1372           },
1373           compose: %{
1374             me: "#{user.id}",
1375             default_privacy: user.info.default_scope,
1376             default_sensitive: false,
1377             allow_content_types: Config.get([:instance, :allowed_post_formats])
1378           },
1379           media_attachments: %{
1380             accept_content_types: [
1381               ".jpg",
1382               ".jpeg",
1383               ".png",
1384               ".gif",
1385               ".webm",
1386               ".mp4",
1387               ".m4v",
1388               "image\/jpeg",
1389               "image\/png",
1390               "image\/gif",
1391               "video\/webm",
1392               "video\/mp4"
1393             ]
1394           },
1395           settings:
1396             user.info.settings ||
1397               %{
1398                 onboarded: true,
1399                 home: %{
1400                   shows: %{
1401                     reblog: true,
1402                     reply: true
1403                   }
1404                 },
1405                 notifications: %{
1406                   alerts: %{
1407                     follow: true,
1408                     favourite: true,
1409                     reblog: true,
1410                     mention: true
1411                   },
1412                   shows: %{
1413                     follow: true,
1414                     favourite: true,
1415                     reblog: true,
1416                     mention: true
1417                   },
1418                   sounds: %{
1419                     follow: true,
1420                     favourite: true,
1421                     reblog: true,
1422                     mention: true
1423                   }
1424                 }
1425               },
1426           push_subscription: nil,
1427           accounts: accounts,
1428           custom_emojis: mastodon_emoji,
1429           char_limit: limit
1430         }
1431         |> Jason.encode!()
1432
1433       conn
1434       |> put_layout(false)
1435       |> put_view(MastodonView)
1436       |> render("index.html", %{initial_state: initial_state, flavour: flavour})
1437     else
1438       conn
1439       |> put_session(:return_to, conn.request_path)
1440       |> redirect(to: "/web/login")
1441     end
1442   end
1443
1444   def put_settings(%{assigns: %{user: user}} = conn, %{"data" => settings} = _params) do
1445     info_cng = User.Info.mastodon_settings_update(user.info, settings)
1446
1447     with changeset <- Ecto.Changeset.change(user),
1448          changeset <- Ecto.Changeset.put_embed(changeset, :info, info_cng),
1449          {:ok, _user} <- User.update_and_set_cache(changeset) do
1450       json(conn, %{})
1451     else
1452       e ->
1453         conn
1454         |> put_resp_content_type("application/json")
1455         |> send_resp(500, Jason.encode!(%{"error" => inspect(e)}))
1456     end
1457   end
1458
1459   @supported_flavours ["glitch", "vanilla"]
1460
1461   def set_flavour(%{assigns: %{user: user}} = conn, %{"flavour" => flavour} = _params)
1462       when flavour in @supported_flavours do
1463     flavour_cng = User.Info.mastodon_flavour_update(user.info, flavour)
1464
1465     with changeset <- Ecto.Changeset.change(user),
1466          changeset <- Ecto.Changeset.put_embed(changeset, :info, flavour_cng),
1467          {:ok, user} <- User.update_and_set_cache(changeset),
1468          flavour <- user.info.flavour do
1469       json(conn, flavour)
1470     else
1471       e ->
1472         conn
1473         |> put_resp_content_type("application/json")
1474         |> send_resp(500, Jason.encode!(%{"error" => inspect(e)}))
1475     end
1476   end
1477
1478   def set_flavour(conn, _params) do
1479     conn
1480     |> put_status(400)
1481     |> json(%{error: "Unsupported flavour"})
1482   end
1483
1484   def get_flavour(%{assigns: %{user: user}} = conn, _params) do
1485     json(conn, get_user_flavour(user))
1486   end
1487
1488   defp get_user_flavour(%User{info: %{flavour: flavour}}) when flavour in @supported_flavours do
1489     flavour
1490   end
1491
1492   defp get_user_flavour(_) do
1493     "glitch"
1494   end
1495
1496   def login(%{assigns: %{user: %User{}}} = conn, _params) do
1497     redirect(conn, to: local_mastodon_root_path(conn))
1498   end
1499
1500   @doc "Local Mastodon FE login init action"
1501   def login(conn, %{"code" => auth_token}) do
1502     with {:ok, app} <- get_or_make_app(),
1503          %Authorization{} = auth <- Repo.get_by(Authorization, token: auth_token, app_id: app.id),
1504          {:ok, token} <- Token.exchange_token(app, auth) do
1505       conn
1506       |> put_session(:oauth_token, token.token)
1507       |> redirect(to: local_mastodon_root_path(conn))
1508     end
1509   end
1510
1511   @doc "Local Mastodon FE callback action"
1512   def login(conn, _) do
1513     with {:ok, app} <- get_or_make_app() do
1514       path =
1515         o_auth_path(
1516           conn,
1517           :authorize,
1518           response_type: "code",
1519           client_id: app.client_id,
1520           redirect_uri: ".",
1521           scope: Enum.join(app.scopes, " ")
1522         )
1523
1524       redirect(conn, to: path)
1525     end
1526   end
1527
1528   defp local_mastodon_root_path(conn) do
1529     case get_session(conn, :return_to) do
1530       nil ->
1531         mastodon_api_path(conn, :index, ["getting-started"])
1532
1533       return_to ->
1534         delete_session(conn, :return_to)
1535         return_to
1536     end
1537   end
1538
1539   defp get_or_make_app do
1540     find_attrs = %{client_name: @local_mastodon_name, redirect_uris: "."}
1541     scopes = ["read", "write", "follow", "push"]
1542
1543     with %App{} = app <- Repo.get_by(App, find_attrs) do
1544       {:ok, app} =
1545         if app.scopes == scopes do
1546           {:ok, app}
1547         else
1548           app
1549           |> Ecto.Changeset.change(%{scopes: scopes})
1550           |> Repo.update()
1551         end
1552
1553       {:ok, app}
1554     else
1555       _e ->
1556         cs =
1557           App.register_changeset(
1558             %App{},
1559             Map.put(find_attrs, :scopes, scopes)
1560           )
1561
1562         Repo.insert(cs)
1563     end
1564   end
1565
1566   def logout(conn, _) do
1567     conn
1568     |> clear_session
1569     |> redirect(to: "/")
1570   end
1571
1572   def relationship_noop(%{assigns: %{user: user}} = conn, %{"id" => id}) do
1573     Logger.debug("Unimplemented, returning unmodified relationship")
1574
1575     with %User{} = target <- User.get_cached_by_id(id) do
1576       conn
1577       |> put_view(AccountView)
1578       |> render("relationship.json", %{user: user, target: target})
1579     end
1580   end
1581
1582   def empty_array(conn, _) do
1583     Logger.debug("Unimplemented, returning an empty array")
1584     json(conn, [])
1585   end
1586
1587   def empty_object(conn, _) do
1588     Logger.debug("Unimplemented, returning an empty object")
1589     json(conn, %{})
1590   end
1591
1592   def get_filters(%{assigns: %{user: user}} = conn, _) do
1593     filters = Filter.get_filters(user)
1594     res = FilterView.render("filters.json", filters: filters)
1595     json(conn, res)
1596   end
1597
1598   def create_filter(
1599         %{assigns: %{user: user}} = conn,
1600         %{"phrase" => phrase, "context" => context} = params
1601       ) do
1602     query = %Filter{
1603       user_id: user.id,
1604       phrase: phrase,
1605       context: context,
1606       hide: Map.get(params, "irreversible", false),
1607       whole_word: Map.get(params, "boolean", true)
1608       # expires_at
1609     }
1610
1611     {:ok, response} = Filter.create(query)
1612     res = FilterView.render("filter.json", filter: response)
1613     json(conn, res)
1614   end
1615
1616   def get_filter(%{assigns: %{user: user}} = conn, %{"id" => filter_id}) do
1617     filter = Filter.get(filter_id, user)
1618     res = FilterView.render("filter.json", filter: filter)
1619     json(conn, res)
1620   end
1621
1622   def update_filter(
1623         %{assigns: %{user: user}} = conn,
1624         %{"phrase" => phrase, "context" => context, "id" => filter_id} = params
1625       ) do
1626     query = %Filter{
1627       user_id: user.id,
1628       filter_id: filter_id,
1629       phrase: phrase,
1630       context: context,
1631       hide: Map.get(params, "irreversible", nil),
1632       whole_word: Map.get(params, "boolean", true)
1633       # expires_at
1634     }
1635
1636     {:ok, response} = Filter.update(query)
1637     res = FilterView.render("filter.json", filter: response)
1638     json(conn, res)
1639   end
1640
1641   def delete_filter(%{assigns: %{user: user}} = conn, %{"id" => filter_id}) do
1642     query = %Filter{
1643       user_id: user.id,
1644       filter_id: filter_id
1645     }
1646
1647     {:ok, _} = Filter.delete(query)
1648     json(conn, %{})
1649   end
1650
1651   # fallback action
1652   #
1653   def errors(conn, {:error, %Changeset{} = changeset}) do
1654     error_message =
1655       changeset
1656       |> Changeset.traverse_errors(fn {message, _opt} -> message end)
1657       |> Enum.map_join(", ", fn {_k, v} -> v end)
1658
1659     conn
1660     |> put_status(422)
1661     |> json(%{error: error_message})
1662   end
1663
1664   def errors(conn, {:error, :not_found}) do
1665     conn
1666     |> put_status(404)
1667     |> json(%{error: "Record not found"})
1668   end
1669
1670   def errors(conn, _) do
1671     conn
1672     |> put_status(500)
1673     |> json("Something went wrong")
1674   end
1675
1676   def suggestions(%{assigns: %{user: user}} = conn, _) do
1677     suggestions = Config.get(:suggestions)
1678
1679     if Keyword.get(suggestions, :enabled, false) do
1680       api = Keyword.get(suggestions, :third_party_engine, "")
1681       timeout = Keyword.get(suggestions, :timeout, 5000)
1682       limit = Keyword.get(suggestions, :limit, 23)
1683
1684       host = Config.get([Pleroma.Web.Endpoint, :url, :host])
1685
1686       user = user.nickname
1687
1688       url =
1689         api
1690         |> String.replace("{{host}}", host)
1691         |> String.replace("{{user}}", user)
1692
1693       with {:ok, %{status: 200, body: body}} <-
1694              HTTP.get(
1695                url,
1696                [],
1697                adapter: [
1698                  recv_timeout: timeout,
1699                  pool: :default
1700                ]
1701              ),
1702            {:ok, data} <- Jason.decode(body) do
1703         data =
1704           data
1705           |> Enum.slice(0, limit)
1706           |> Enum.map(fn x ->
1707             Map.put(
1708               x,
1709               "id",
1710               case User.get_or_fetch(x["acct"]) do
1711                 {:ok, %User{id: id}} -> id
1712                 _ -> 0
1713               end
1714             )
1715           end)
1716           |> Enum.map(fn x ->
1717             Map.put(x, "avatar", MediaProxy.url(x["avatar"]))
1718           end)
1719           |> Enum.map(fn x ->
1720             Map.put(x, "avatar_static", MediaProxy.url(x["avatar_static"]))
1721           end)
1722
1723         conn
1724         |> json(data)
1725       else
1726         e -> Logger.error("Could not retrieve suggestions at fetch #{url}, #{inspect(e)}")
1727       end
1728     else
1729       json(conn, [])
1730     end
1731   end
1732
1733   def status_card(%{assigns: %{user: user}} = conn, %{"id" => status_id}) do
1734     with %Activity{} = activity <- Activity.get_by_id(status_id),
1735          true <- Visibility.visible_for_user?(activity, user) do
1736       data =
1737         StatusView.render(
1738           "card.json",
1739           Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
1740         )
1741
1742       json(conn, data)
1743     else
1744       _e ->
1745         %{}
1746     end
1747   end
1748
1749   def reports(%{assigns: %{user: user}} = conn, params) do
1750     case CommonAPI.report(user, params) do
1751       {:ok, activity} ->
1752         conn
1753         |> put_view(ReportView)
1754         |> try_render("report.json", %{activity: activity})
1755
1756       {:error, err} ->
1757         conn
1758         |> put_status(:bad_request)
1759         |> json(%{error: err})
1760     end
1761   end
1762
1763   def account_register(
1764         %{assigns: %{app: app}} = conn,
1765         %{"username" => nickname, "email" => _, "password" => _, "agreement" => true} = params
1766       ) do
1767     params =
1768       params
1769       |> Map.take([
1770         "email",
1771         "captcha_solution",
1772         "captcha_token",
1773         "captcha_answer_data",
1774         "token",
1775         "password"
1776       ])
1777       |> Map.put("nickname", nickname)
1778       |> Map.put("fullname", params["fullname"] || nickname)
1779       |> Map.put("bio", params["bio"] || "")
1780       |> Map.put("confirm", params["password"])
1781
1782     with {:ok, user} <- TwitterAPI.register_user(params, need_confirmation: true),
1783          {:ok, token} <- Token.create_token(app, user, %{scopes: app.scopes}) do
1784       json(conn, %{
1785         token_type: "Bearer",
1786         access_token: token.token,
1787         scope: app.scopes,
1788         created_at: Token.Utils.format_created_at(token)
1789       })
1790     else
1791       {:error, errors} ->
1792         conn
1793         |> put_status(400)
1794         |> json(Jason.encode!(errors))
1795     end
1796   end
1797
1798   def account_register(%{assigns: %{app: _app}} = conn, _params) do
1799     conn
1800     |> put_status(400)
1801     |> json(%{error: "Missing parameters"})
1802   end
1803
1804   def account_register(conn, _) do
1805     conn
1806     |> put_status(403)
1807     |> json(%{error: "Invalid credentials"})
1808   end
1809
1810   def conversations(%{assigns: %{user: user}} = conn, params) do
1811     participations = Participation.for_user_with_last_activity_id(user, params)
1812
1813     conversations =
1814       Enum.map(participations, fn participation ->
1815         ConversationView.render("participation.json", %{participation: participation, user: user})
1816       end)
1817
1818     conn
1819     |> add_link_headers(:conversations, participations)
1820     |> json(conversations)
1821   end
1822
1823   def conversation_read(%{assigns: %{user: user}} = conn, %{"id" => participation_id}) do
1824     with %Participation{} = participation <-
1825            Repo.get_by(Participation, id: participation_id, user_id: user.id),
1826          {:ok, participation} <- Participation.mark_as_read(participation) do
1827       participation_view =
1828         ConversationView.render("participation.json", %{participation: participation, user: user})
1829
1830       conn
1831       |> json(participation_view)
1832     end
1833   end
1834
1835   def try_render(conn, target, params)
1836       when is_binary(target) do
1837     res = render(conn, target, params)
1838
1839     if res == nil do
1840       conn
1841       |> put_status(501)
1842       |> json(%{error: "Can't display this activity"})
1843     else
1844       res
1845     end
1846   end
1847
1848   def try_render(conn, _, _) do
1849     conn
1850     |> put_status(501)
1851     |> json(%{error: "Can't display this activity"})
1852   end
1853
1854   defp present?(nil), do: false
1855   defp present?(false), do: false
1856   defp present?(_), do: true
1857 end