3 files changed, 78 insertions, 8 deletions

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 8d3116839..7e153f396 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -353,6 +353,31 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  def flag(
+        %{
+          actor: actor,
+          context: context,
+          account: account,
+          statuses: statuses,
+          content: content
+        } = params
+      ) do
+    additional = params[:additional] || %{}
+
+    # only accept false as false value
+    local = !(params[:local] == false)
+
+    %{
+      actor: actor,
+      context: context,
+      account: account,
+      statuses: statuses,
+      content: content
+    }
+    |> make_flag_data(additional)
+    |> insert(local)
+  end
+
   def fetch_activities_for_context(context, opts \\ %{}) do
     public = ["https://www.w3.org/ns/activitystreams#Public"]
 
@@ -576,6 +601,18 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_reblogs(query, _), do: query
 
+  defp restrict_muted(query, %{"muting_user" => %User{info: info}}) do
+    mutes = info.mutes
+
+    from(
+      activity in query,
+      where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
+      where: fragment("not (?->'to' \\?| ?)", activity.data, ^mutes)
+    )
+  end
+
+  defp restrict_muted(query, _), do: query
+
   defp restrict_blocked(query, %{"blocking_user" => %User{info: info}}) do
     blocks = info.blocks || []
     domain_blocks = info.domain_blocks || []
@@ -629,6 +666,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> restrict_type(opts)
     |> restrict_favorited_by(opts)
     |> restrict_blocked(opts)
+    |> restrict_muted(opts)
     |> restrict_media(opts)
     |> restrict_visibility(opts)
     |> restrict_replies(opts)
@@ -785,11 +823,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
     digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
 
+    date =
+      NaiveDateTime.utc_now()
+      |> Timex.format!("{WDshort}, {D} {Mshort} {YYYY} {h24}:{m}:{s} GMT")
+
     signature =
       Pleroma.Web.HTTPSignatures.sign(actor, %{
         host: host,
         "content-length": byte_size(json),
-        digest: digest
+        digest: digest,
+        date: date
       })
 
     with {:ok, %{status: code}} when code in 200..299 <-
@@ -799,6 +842,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
                json,
                [
                  {"Content-Type", "application/activity+json"},
+                 {"Date", date},
                  {"signature", signature},
                  {"digest", digest}
                ]
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index 6a89374d0..88f4779c8 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -598,4 +598,20 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     }
     |> Map.merge(additional)
   end
+
+  #### Flag-related helpers
+
+  def make_flag_data(params, additional) do
+    status_ap_ids = Enum.map(params.statuses || [], & &1.data["id"])
+    object = [params.account.ap_id] ++ status_ap_ids
+
+    %{
+      "type" => "Flag",
+      "actor" => params.actor.ap_id,
+      "content" => params.content,
+      "object" => object,
+      "context" => params.context
+    }
+    |> Map.merge(additional)
+  end
 end
diff --git a/lib/pleroma/web/activity_pub/views/user_view.ex b/lib/pleroma/web/activity_pub/views/user_view.ex
index c8e154989..415cbd47a 100644
--- a/lib/pleroma/web/activity_pub/views/user_view.ex
+++ b/lib/pleroma/web/activity_pub/views/user_view.ex
@@ -188,14 +188,24 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       end
 
     activities = ActivityPub.fetch_user_activities(user, nil, params)
-    min_id = Enum.at(Enum.reverse(activities), 0).id
-    max_id = Enum.at(activities, 0).id
 
-    collection =
-      Enum.map(activities, fn act ->
-        {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
-        data
-      end)
+    {max_id, min_id, collection} =
+      if length(activities) > 0 do
+        {
+          Enum.at(Enum.reverse(activities), 0).id,
+          Enum.at(activities, 0).id,
+          Enum.map(activities, fn act ->
+            {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
+            data
+          end)
+        }
+      else
+        {
+          0,
+          0,
+          []
+        }
+      end
 
     iri = "#{user.ap_id}/outbox"