X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Futils.ex;h=2ca805c091ab25c9340e05782750844b1ff6d711;hb=dbcfac11b45b367185a3b18a2db3e3fb07e8f20d;hp=5e7f76bb68ae6a69732de5c3b3fefbd341177a1b;hpb=7258db023e88d5aee5eac06525c42dcb073abd46;p=akkoma

diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index 5e7f76bb6..2d685ecc0 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.Utils do
@@ -22,7 +22,16 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   require Logger
   require Pleroma.Constants
 
-  @supported_object_types ["Article", "Note", "Video", "Page", "Question", "Answer", "Audio"]
+  @supported_object_types [
+    "Article",
+    "Note",
+    "Event",
+    "Video",
+    "Page",
+    "Question",
+    "Answer",
+    "Audio"
+  ]
   @strip_status_report_states ~w(closed resolved)
   @supported_report_states ~w(open closed resolved)
   @valid_visibilities ~w(public unlisted private direct)
@@ -36,8 +45,8 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     Map.put(params, "actor", get_ap_id(params["actor"]))
   end
 
-  @spec determine_explicit_mentions(map()) :: map()
-  def determine_explicit_mentions(%{"tag" => tag} = _) when is_list(tag) do
+  @spec determine_explicit_mentions(map()) :: [any]
+  def determine_explicit_mentions(%{"tag" => tag}) when is_list(tag) do
     Enum.flat_map(tag, fn
       %{"type" => "Mention", "href" => href} -> [href]
       _ -> []
@@ -256,6 +265,16 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> Repo.one()
   end
 
+  @doc """
+  Returns like activities targeting an object
+  """
+  def get_object_likes(%{data: %{"id" => id}}) do
+    id
+    |> Activity.Queries.by_object_id()
+    |> Activity.Queries.by_type("Like")
+    |> Repo.all()
+  end
+
   @spec make_like_data(User.t(), map(), String.t()) :: map()
   def make_like_data(
         %User{ap_id: ap_id} = actor,
@@ -287,13 +306,23 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> maybe_put("id", activity_id)
   end
 
-  @spec update_element_in_object(String.t(), list(any), Object.t()) ::
+  def make_emoji_reaction_data(user, object, emoji, activity_id) do
+    make_like_data(user, object, activity_id)
+    |> Map.put("type", "EmojiReact")
+    |> Map.put("content", emoji)
+  end
+
+  @spec update_element_in_object(String.t(), list(any), Object.t(), integer() | nil) ::
           {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
-  def update_element_in_object(property, element, object) do
+  def update_element_in_object(property, element, object, count \\ nil) do
+    length =
+      count ||
+        length(element)
+
     data =
       Map.merge(
         object.data,
-        %{"#{property}_count" => length(element), "#{property}s" => element}
+        %{"#{property}_count" => length, "#{property}s" => element}
       )
 
     object
@@ -301,6 +330,69 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> Object.update_and_set_cache()
   end
 
+  @spec add_emoji_reaction_to_object(Activity.t(), Object.t()) ::
+          {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
+
+  def add_emoji_reaction_to_object(
+        %Activity{data: %{"content" => emoji, "actor" => actor}},
+        object
+      ) do
+    reactions = get_cached_emoji_reactions(object)
+
+    new_reactions =
+      case Enum.find_index(reactions, fn [candidate, _] -> emoji == candidate end) do
+        nil ->
+          reactions ++ [[emoji, [actor]]]
+
+        index ->
+          List.update_at(
+            reactions,
+            index,
+            fn [emoji, users] -> [emoji, Enum.uniq([actor | users])] end
+          )
+      end
+
+    count = emoji_count(new_reactions)
+
+    update_element_in_object("reaction", new_reactions, object, count)
+  end
+
+  def emoji_count(reactions_list) do
+    Enum.reduce(reactions_list, 0, fn [_, users], acc -> acc + length(users) end)
+  end
+
+  def remove_emoji_reaction_from_object(
+        %Activity{data: %{"content" => emoji, "actor" => actor}},
+        object
+      ) do
+    reactions = get_cached_emoji_reactions(object)
+
+    new_reactions =
+      case Enum.find_index(reactions, fn [candidate, _] -> emoji == candidate end) do
+        nil ->
+          reactions
+
+        index ->
+          List.update_at(
+            reactions,
+            index,
+            fn [emoji, users] -> [emoji, List.delete(users, actor)] end
+          )
+          |> Enum.reject(fn [_, users] -> Enum.empty?(users) end)
+      end
+
+    count = emoji_count(new_reactions)
+    update_element_in_object("reaction", new_reactions, object, count)
+  end
+
+  def get_cached_emoji_reactions(object) do
+    if is_list(object.data["reactions"]) do
+      object.data["reactions"]
+    else
+      []
+    end
+  end
+
   @spec add_like_to_object(Activity.t(), Object.t()) ::
           {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
   def add_like_to_object(%Activity{data: %{"actor" => actor}}, object) do
@@ -335,7 +427,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Updates a follow activity's state (for locked accounts).
   """
-  @spec update_follow_state_for_all(Activity.t(), String.t()) :: {:ok, Activity} | {:error, any()}
+  @spec update_follow_state_for_all(Activity.t(), String.t()) :: {:ok, Activity | nil}
   def update_follow_state_for_all(
         %Activity{data: %{"actor" => actor, "object" => object}} = activity,
         state
@@ -348,22 +440,19 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> update(set: [data: fragment("jsonb_set(data, '{state}', ?)", ^state)])
     |> Repo.update_all([])
 
-    User.set_follow_state_cache(actor, object, state)
-
     activity = Activity.get_by_id(activity.id)
 
     {:ok, activity}
   end
 
   def update_follow_state(
-        %Activity{data: %{"actor" => actor, "object" => object}} = activity,
+        %Activity{} = activity,
         state
       ) do
     new_data = Map.put(activity.data, "state", state)
     changeset = Changeset.change(activity, data: new_data)
 
     with {:ok, activity} <- Repo.update(changeset) do
-      User.set_follow_state_cache(actor, object, state)
       {:ok, activity}
     end
   end
@@ -398,6 +487,28 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> Repo.one()
   end
 
+  def fetch_latest_undo(%User{ap_id: ap_id}) do
+    "Undo"
+    |> Activity.Queries.by_type()
+    |> where(actor: ^ap_id)
+    |> order_by([activity], fragment("? desc nulls last", activity.id))
+    |> limit(1)
+    |> Repo.one()
+  end
+
+  def get_latest_reaction(internal_activity_id, %{ap_id: ap_id}, emoji) do
+    %{data: %{"object" => object_ap_id}} = Activity.get_by_id(internal_activity_id)
+
+    "EmojiReact"
+    |> Activity.Queries.by_type()
+    |> where(actor: ^ap_id)
+    |> where([activity], fragment("?->>'content' = ?", activity.data, ^emoji))
+    |> Activity.Queries.by_object_id(object_ap_id)
+    |> order_by([activity], fragment("? desc nulls last", activity.id))
+    |> limit(1)
+    |> Repo.one()
+  end
+
   #### Announce-related helpers
 
   @doc """
@@ -490,6 +601,25 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     |> maybe_put("id", activity_id)
   end
 
+  def make_undo_data(
+        %User{ap_id: actor, follower_address: follower_address},
+        %Activity{
+          data: %{"id" => undone_activity_id, "context" => context},
+          actor: undone_activity_actor
+        },
+        activity_id \\ nil
+      ) do
+    %{
+      "type" => "Undo",
+      "actor" => actor,
+      "object" => undone_activity_id,
+      "to" => [follower_address, undone_activity_actor],
+      "cc" => [Pleroma.Constants.as_public()],
+      "context" => context
+    }
+    |> maybe_put("id", activity_id)
+  end
+
   @spec add_announce_to_object(Activity.t(), Object.t()) ::
           {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
   def add_announce_to_object(
@@ -631,65 +761,33 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         act when is_binary(act) -> act
       end
 
-    activity = Activity.get_by_ap_id_with_object(id)
-    actor = User.get_by_ap_id(activity.object.data["actor"])
+    case Activity.get_by_ap_id_with_object(id) do
+      %Activity{} = activity ->
+        %{
+          "type" => "Note",
+          "id" => activity.data["id"],
+          "content" => activity.object.data["content"],
+          "published" => activity.object.data["published"],
+          "actor" =>
+            AccountView.render("show.json", %{
+              user: User.get_by_ap_id(activity.object.data["actor"])
+            })
+        }
 
-    %{
-      "type" => "Note",
-      "id" => activity.data["id"],
-      "content" => activity.object.data["content"],
-      "published" => activity.object.data["published"],
-      "actor" => AccountView.render("show.json", %{user: actor})
-    }
+      _ ->
+        %{"id" => id, "deleted" => true}
+    end
   end
 
   defp build_flag_object(_), do: []
 
-  @doc """
-  Fetches the OrderedCollection/OrderedCollectionPage from `from`, limiting the amount of pages fetched after
-  the first one to `pages_left` pages.
-  If the amount of pages is higher than the collection has, it returns whatever was there.
-  """
-  def fetch_ordered_collection(from, pages_left, acc \\ []) do
-    with {:ok, response} <- Tesla.get(from),
-         {:ok, collection} <- Jason.decode(response.body) do
-      case collection["type"] do
-        "OrderedCollection" ->
-          # If we've encountered the OrderedCollection and not the page,
-          # just call the same function on the page address
-          fetch_ordered_collection(collection["first"], pages_left)
-
-        "OrderedCollectionPage" ->
-          if pages_left > 0 do
-            # There are still more pages
-            if Map.has_key?(collection, "next") do
-              # There are still more pages, go deeper saving what we have into the accumulator
-              fetch_ordered_collection(
-                collection["next"],
-                pages_left - 1,
-                acc ++ collection["orderedItems"]
-              )
-            else
-              # No more pages left, just return whatever we already have
-              acc ++ collection["orderedItems"]
-            end
-          else
-            # Got the amount of pages needed, add them all to the accumulator
-            acc ++ collection["orderedItems"]
-          end
-
-        _ ->
-          {:error, "Not an OrderedCollection or OrderedCollectionPage"}
-      end
-    end
-  end
-
   #### Report-related helpers
   def get_reports(params, page, page_size) do
     params =
       params
       |> Map.put("type", "Flag")
       |> Map.put("skip_preload", true)
+      |> Map.put("preload_report_notes", true)
       |> Map.put("total", true)
       |> Map.put("limit", page_size)
       |> Map.put("offset", (page - 1) * page_size)
@@ -697,83 +795,6 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     ActivityPub.fetch_activities([], params, :offset)
   end
 
-  @spec get_reports_grouped_by_status(%{required(:activity) => String.t()}) :: %{
-          required(:groups) => [
-            %{
-              required(:date) => String.t(),
-              required(:account) => %{},
-              required(:status) => %{},
-              required(:actors) => [%User{}],
-              required(:reports) => [%Activity{}]
-            }
-          ],
-          required(:total) => integer
-        }
-  def get_reports_grouped_by_status(groups) do
-    parsed_groups =
-      groups
-      |> Enum.map(fn entry ->
-        activity =
-          case Jason.decode(entry.activity) do
-            {:ok, activity} -> activity
-            _ -> build_flag_object(entry.activity)
-          end
-
-        parse_report_group(activity)
-      end)
-
-    %{
-      groups: parsed_groups
-    }
-  end
-
-  def parse_report_group(activity) do
-    reports = get_reports_by_status_id(activity["id"])
-    max_date = Enum.max_by(reports, &NaiveDateTime.from_iso8601!(&1.data["published"]))
-    actors = Enum.map(reports, & &1.user_actor)
-
-    %{
-      date: max_date.data["published"],
-      account: activity["actor"],
-      status: %{
-        id: activity["id"],
-        content: activity["content"],
-        published: activity["published"]
-      },
-      actors: Enum.uniq(actors),
-      reports: reports
-    }
-  end
-
-  def get_reports_by_status_id(ap_id) do
-    from(a in Activity,
-      where: fragment("(?)->>'type' = 'Flag'", a.data),
-      where: fragment("(?)->'object' @> ?", a.data, ^[%{id: ap_id}])
-    )
-    |> Activity.with_preloaded_user_actor()
-    |> Repo.all()
-  end
-
-  @spec get_reported_activities() :: [
-          %{
-            required(:activity) => String.t(),
-            required(:date) => String.t()
-          }
-        ]
-  def get_reported_activities do
-    from(a in Activity,
-      where: fragment("(?)->>'type' = 'Flag'", a.data),
-      select: %{
-        date: fragment("max(?->>'published') date", a.data),
-        activity:
-          fragment("jsonb_array_elements_text((? #- '{object,0}')->'object') activity", a.data)
-      },
-      group_by: fragment("activity"),
-      order_by: fragment("date DESC")
-    )
-    |> Repo.all()
-  end
-
   def update_report_state(%Activity{} = activity, state)
       when state in @strip_status_report_states do
     {:ok, stripped_activity} = strip_report_status_data(activity)
@@ -812,7 +833,13 @@ defmodule Pleroma.Web.ActivityPub.Utils do
 
   def strip_report_status_data(activity) do
     [actor | reported_activities] = activity.data["object"]
-    stripped_activities = Enum.map(reported_activities, & &1["id"])
+
+    stripped_activities =
+      Enum.map(reported_activities, fn
+        act when is_map(act) -> act["id"]
+        act when is_binary(act) -> act
+      end)
+
     new_data = put_in(activity.data, ["object"], [actor | stripped_activities])
 
     {:ok, %{activity | data: new_data}}