X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Factivity_pub.ex;h=f3e94b1010c54f978af1ed088f0076ab8038da8a;hb=b403ea4d2b69cef4434ad68babdfb402d8227847;hp=6c8250de86f08923318cae7a15cf77f7952bfa30;hpb=d18473f0c3ba151d9640a08192370fee2e9af105;p=akkoma

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 6c8250de8..f3e94b101 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -1,19 +1,120 @@
 defmodule Pleroma.Web.ActivityPub.ActivityPub do
-  alias Pleroma.Repo
-  alias Pleroma.{Activity, Object, Upload}
+  alias Pleroma.{Activity, Repo, Object, Upload, User, Web}
+  alias Ecto.{Changeset, UUID}
   import Ecto.Query
 
-  def insert(map) when is_map(map) do
-    map = Map.put_new_lazy(map, "id", &generate_activity_id/0)
+  def insert(map, local \\ true) when is_map(map) do
+    map = map
+    |> Map.put_new_lazy("id", &generate_activity_id/0)
+    |> Map.put_new_lazy("published", &make_date/0)
 
-    map = if map["object"] do
+    map = if is_map(map["object"]) do
       object = Map.put_new_lazy(map["object"], "id", &generate_object_id/0)
+      Repo.insert!(%Object{data: object})
       Map.put(map, "object", object)
     else
       map
     end
 
-    Repo.insert(%Activity{data: map})
+    Repo.insert(%Activity{data: map, local: local})
+  end
+
+  def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
+    published = published || make_date()
+
+    activity = %{
+      "type" => "Create",
+      "to" => to |> Enum.uniq,
+      "actor" => actor.ap_id,
+      "object" => object,
+      "published" => published,
+      "context" => context
+    }
+    |> Map.merge(additional)
+
+    with {:ok, activity} <- insert(activity, local) do
+      if actor.local do
+        Pleroma.Web.Federator.enqueue(:publish, activity)
+       end
+
+      {:ok, activity}
+    end
+  end
+
+  def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, local \\ true) do
+    cond do
+      # There's already a like here, so return the original activity.
+      ap_id in (object.data["likes"] || []) ->
+        query = from activity in Activity,
+          where: fragment("? @> ?", activity.data, ^%{actor: ap_id, object: id, type: "Like"})
+
+        activity = Repo.one(query)
+        {:ok, activity, object}
+      true ->
+        data = %{
+          "type" => "Like",
+          "actor" => ap_id,
+          "object" => id,
+          "to" => [User.ap_followers(user), object.data["actor"]],
+          "context" => object.data["context"]
+        }
+
+        {:ok, activity} = insert(data, local)
+
+        likes = [ap_id | (object.data["likes"] || [])] |> Enum.uniq
+
+        new_data = object.data
+        |> Map.put("like_count", length(likes))
+        |> Map.put("likes", likes)
+
+        changeset = Changeset.change(object, data: new_data)
+        {:ok, object} = Repo.update(changeset)
+
+        update_object_in_activities(object)
+
+        if user.local do
+          Pleroma.Web.Federator.enqueue(:publish, activity)
+        end
+
+        {:ok, activity, object}
+    end
+  end
+
+  defp update_object_in_activities(%{data: %{"id" => id}} = object) do
+    # Update activities that already had this. Could be done in a seperate process.
+    relevant_activities = Activity.all_by_object_ap_id(id)
+    Enum.map(relevant_activities, fn (activity) ->
+      new_activity_data = activity.data |> Map.put("object", object.data)
+      changeset = Changeset.change(activity, data: new_activity_data)
+      Repo.update(changeset)
+    end)
+  end
+
+  def unlike(%User{ap_id: ap_id}, %Object{data: %{ "id" => id}} = object) do
+    query = from activity in Activity,
+      where: fragment("? @> ?", activity.data, ^%{actor: ap_id, object: id, type: "Like"})
+
+    activity = Repo.one(query)
+
+    if activity do
+      # just delete for now...
+      {:ok, _activity} = Repo.delete(activity)
+
+      likes = (object.data["likes"] || []) |> List.delete(ap_id)
+
+      new_data = object.data
+      |> Map.put("like_count", length(likes))
+      |> Map.put("likes", likes)
+
+      changeset = Changeset.change(object, data: new_data)
+      {:ok, object} = Repo.update(changeset)
+
+      update_object_in_activities(object)
+
+      {:ok, object}
+    else
+      {:ok, object}
+    end
   end
 
   def generate_activity_id do
@@ -25,11 +126,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   def generate_object_id do
-    generate_id("objects")
+    Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :object, Ecto.UUID.generate)
   end
 
   def generate_id(type) do
-    "#{Pleroma.Web.base_url()}/#{type}/#{Ecto.UUID.generate}"
+    "#{Web.base_url()}/#{type}/#{UUID.generate}"
   end
 
   def fetch_public_activities(opts \\ %{}) do
@@ -53,8 +154,93 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     query = from activity in query,
       where: activity.id > ^since_id
 
-    Repo.all(query)
-    |> Enum.reverse
+    query = if opts["local_only"] do
+      from activity in query, where: activity.local == true
+    else
+      query
+    end
+
+    query = if opts["max_id"] do
+      from activity in query, where: activity.id < ^opts["max_id"]
+    else
+      query
+    end
+
+    query = if opts["actor_id"] do
+      from activity in query,
+        where: fragment("? @> ?", activity.data, ^%{actor: opts["actor_id"]})
+    else
+      query
+    end
+
+    Enum.reverse(Repo.all(query))
+  end
+
+  def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, local \\ true) do
+    data = %{
+      "type" => "Announce",
+      "actor" => ap_id,
+      "object" => id,
+      "to" => [User.ap_followers(user), object.data["actor"]],
+      "context" => object.data["context"]
+    }
+
+    {:ok, activity} = insert(data, local)
+
+    announcements = [ap_id | (object.data["announcements"] || [])] |> Enum.uniq
+
+    new_data = object.data
+    |> Map.put("announcement_count", length(announcements))
+    |> Map.put("announcements", announcements)
+
+    changeset = Changeset.change(object, data: new_data)
+    {:ok, object} = Repo.update(changeset)
+
+    update_object_in_activities(object)
+
+    if user.local do
+      Pleroma.Web.Federator.enqueue(:publish, activity)
+    end
+
+    {:ok, activity, object}
+  end
+
+  def follow(%User{ap_id: follower_id, local: actor_local}, %User{ap_id: followed_id}, local \\ true) do
+    data = %{
+      "type" => "Follow",
+      "actor" => follower_id,
+      "to" => [followed_id],
+      "object" => followed_id,
+      "published" => make_date()
+    }
+
+    with {:ok, activity} <- insert(data, local) do
+      if actor_local do
+        Pleroma.Web.Federator.enqueue(:publish, activity)
+       end
+
+      {:ok, activity}
+    end
+  end
+
+  def unfollow(follower, followed, local \\ true) do
+    with follow_activity when not is_nil(follow_activity) <- fetch_latest_follow(follower, followed) do
+      data = %{
+        "type" => "Undo",
+        "actor" => follower.ap_id,
+        "to" => [followed.ap_id],
+        "object" => follow_activity.data["id"],
+        "published" => make_date()
+      }
+
+      with {:ok, activity} <- insert(data, local) do
+        if follower.local do
+          Pleroma.Web.Federator.enqueue(:publish, activity)
+        end
+
+        {:ok, activity}
+      end
+    end
   end
 
   def fetch_activities_for_context(context) do
@@ -63,8 +249,22 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     Repo.all(query)
   end
 
-  def upload(%Plug.Upload{} = file) do
+  def fetch_latest_follow(%User{ap_id: follower_id},
+                          %User{ap_id: followed_id}) do
+    query = from activity in Activity,
+      where: fragment("? @> ?", activity.data, ^%{type: "Follow", actor: follower_id,
+                                                  object: followed_id}),
+      order_by: [desc: :inserted_at],
+      limit: 1
+    Repo.one(query)
+  end
+
+  def upload(file) do
     data = Upload.store(file)
     Repo.insert(%Object{data: data})
   end
+
+  defp make_date do
+    DateTime.utc_now() |> DateTime.to_iso8601
+  end
 end