Introduce the group activity section

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/federation/activity_pub/activity_pub.ex

@@ -459,6 +459,7 @@ defmodule Mobilizon.Federation.ActivityPub do
             Map.get(additional, :force_member_removal, false) ||
               !Actors.is_only_administrator?(member_id, group_id)},
          {:delete, {:ok, %Member{} = member}} <- {:delete, Actors.delete_member(member)},
+         Mobilizon.Service.Activity.Member.insert_activity(member, subject: "member_quit"),
          leave_data <- %{
            "to" => [group_members_url],
            "cc" => [group_url],
@@ -477,12 +478,17 @@ defmodule Mobilizon.Federation.ActivityPub do
   def remove(
         %Member{} = member,
         %Actor{type: :Group, url: group_url, members_url: group_members_url},
-        %Actor{url: moderator_url},
+        %Actor{url: moderator_url} = moderator,
         local,
         _additional \\ %{}
       ) do
     with {:ok, %Member{id: member_id}} <- Actors.update_member(member, %{role: :rejected}),
          %Member{} = member <- Actors.get_member(member_id),
+         {:ok, _} <-
+           Mobilizon.Service.Activity.Member.insert_activity(member,
+             moderator: moderator,
+             subject: "member_removed"
+           ),
          :ok <- Group.send_notification_to_removed_member(member),
          remove_data <- %{
            "to" => [group_members_url],
@@ -518,6 +524,11 @@ defmodule Mobilizon.Federation.ActivityPub do
              invited_by_id: actor_id,
              url: Map.get(additional, :url)
            }),
+         {:ok, _} <-
+           Mobilizon.Service.Activity.Member.insert_activity(member,
+             moderator: actor,
+             subject: "member_invited"
+           ),
          invite_data <- %{
            "type" => "Invite",
            "attributedTo" => group_url,
@@ -914,6 +925,10 @@ defmodule Mobilizon.Federation.ActivityPub do
   defp accept_join(%Member{} = member, additional) do
     with {:ok, %Member{} = member} <-
            Actors.update_member(member, %{role: :member}),
+         {:ok, _} <-
+           Mobilizon.Service.Activity.Member.insert_activity(member,
+             subject: "member_approved"
+           ),
          _ <-
            unless(is_nil(member.parent.domain),
              do: Refresher.fetch_group(member.parent.url, member.actor)
@@ -949,6 +964,10 @@ defmodule Mobilizon.Federation.ActivityPub do
          %Actor{url: actor_url} <- Actors.get_actor(actor_id),
          {:ok, %Member{id: member_id} = member} <-
            Actors.update_member(member, %{role: :member}),
+         {:ok, _} <-
+           Mobilizon.Service.Activity.Member.insert_activity(member,
+             subject: "member_accepted_invitation"
+           ),
          accept_data <- %{
            "type" => "Accept",
            "attributedTo" => member.parent.url,
@@ -1029,6 +1048,9 @@ defmodule Mobilizon.Federation.ActivityPub do
          %Actor{url: actor_url} <- Actors.get_actor(actor_id),
          {:ok, %Member{url: member_url, id: member_id} = member} <-
            Actors.delete_member(member),
+         Mobilizon.Service.Activity.Member.insert_activity(member,
+           subject: "member_rejected_invitation"
+         ),
          accept_data <- %{
            "type" => "Reject",
            "actor" => actor_url,

lib/federation/activity_pub/types/actors.ex

@@ -7,6 +7,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Actors do
   alias Mobilizon.Federation.ActivityPub.Types.Entity
   alias Mobilizon.Federation.ActivityStream.Convertible
   alias Mobilizon.GraphQL.API.Utils, as: APIUtils
+  alias Mobilizon.Service.Activity.Group, as: GroupActivity
   alias Mobilizon.Service.Formatter.HTML
   alias Mobilizon.Service.Notifications.Scheduler
   alias Mobilizon.Web.Email.Follow, as: FollowMailer
@@ -20,6 +21,11 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Actors do
   def create(args, additional) do
     with args <- prepare_args_for_actor(args),
          {:ok, %Actor{} = actor} <- Actors.create_actor(args),
+         {:ok, _} <-
+           GroupActivity.insert_activity(actor,
+             subject: "group_created",
+             actor_id: args.creator_actor_id
+           ),
          actor_as_data <- Convertible.model_to_as(actor),
          audience <- %{"to" => ["https://www.w3.org/ns/activitystreams#Public"], "cc" => []},
          create_data <-
@@ -32,6 +38,12 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Actors do
   @spec update(Actor.t(), map, map) :: {:ok, Actor.t(), Activity.t()} | any
   def update(%Actor{} = old_actor, args, additional) do
     with {:ok, %Actor{} = new_actor} <- Actors.update_actor(old_actor, args),
+         {:ok, _} <-
+           GroupActivity.insert_activity(new_actor,
+             subject: "group_updated",
+             old_group: old_actor,
+             updater_actor: Map.get(args, :updater_actor)
+           ),
          actor_as_data <- Convertible.model_to_as(new_actor),
          {:ok, true} <- Cachex.del(:activity_pub, "actor_#{new_actor.preferred_username}"),
          audience <-
@@ -112,6 +124,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Actors do
                |> Map.get(:metadata, %{})
                |> Map.update(:message, nil, &String.trim(HTML.strip_tags(&1)))
            }),
+         {:ok, _} <-
+           Mobilizon.Service.Activity.Member.insert_activity(member, subject: "member_joined"),
          Absinthe.Subscription.publish(Endpoint, actor, group_membership_changed: actor.id),
          join_data <- %{
            "type" => "Join",

lib/federation/activity_pub/types/discussions.ex

@@ -7,6 +7,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Discussions do
   alias Mobilizon.Federation.ActivityPub.Audience
   alias Mobilizon.Federation.ActivityPub.Types.Entity
   alias Mobilizon.Federation.ActivityStream.Convertible
+  alias Mobilizon.Service.Activity.Discussion, as: DiscussionActivity
   alias Mobilizon.Web.Endpoint
   import Mobilizon.Federation.ActivityPub.Utils, only: [make_create_data: 2, make_update_data: 2]
   require Logger
@@ -19,6 +20,11 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Discussions do
     with %Discussion{} = discussion <- Discussions.get_discussion(discussion_id),
          {:ok, %Discussion{last_comment_id: last_comment_id} = discussion} <-
            Discussions.reply_to_discussion(discussion, args),
+         {:ok, _} <-
+           DiscussionActivity.insert_activity(discussion,
+             subject: "discussion_replied",
+             actor_id: Map.get(args, :creator_id, args.actor_id)
+           ),
          %Comment{} = last_comment <- Discussions.get_comment_with_preload(last_comment_id),
          :ok <- maybe_publish_graphql_subscription(discussion),
          comment_as_data <- Convertible.model_to_as(last_comment),
@@ -35,6 +41,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Discussions do
   def create(args, additional) do
     with {:ok, %Discussion{} = discussion} <-
            Discussions.create_discussion(args),
+         {:ok, _} <-
+           DiscussionActivity.insert_activity(discussion, subject: "discussion_created"),
          discussion_as_data <- Convertible.model_to_as(discussion),
          audience <-
            Audience.calculate_to_and_cc_from_mentions(discussion),
@@ -49,6 +57,11 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Discussions do
   def update(%Discussion{} = old_discussion, args, additional) do
     with {:ok, %Discussion{} = new_discussion} <-
            Discussions.update_discussion(old_discussion, args),
+         {:ok, _} <-
+           DiscussionActivity.insert_activity(new_discussion,
+             subject: "discussion_renamed",
+             old_discussion: old_discussion
+           ),
          {:ok, true} <- Cachex.del(:activity_pub, "discussion_#{new_discussion.slug}"),
          discussion_as_data <- Convertible.model_to_as(new_discussion),
          audience <-
@@ -71,7 +84,12 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Discussions do
         _local,
         _additionnal
       ) do
-    with {:ok, _} <- Discussions.delete_discussion(discussion) do
+    with {:ok, _} <- Discussions.delete_discussion(discussion),
+         {:ok, _} <-
+           DiscussionActivity.insert_activity(discussion,
+             subject: "discussion_deleted",
+             moderator: actor
+           ) do
       # This is just fake
       activity_data = %{
         "type" => "Delete",

lib/federation/activity_pub/types/events.ex

@@ -10,6 +10,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Events do
   alias Mobilizon.Federation.ActivityStream.Converter.Utils, as: ConverterUtils
   alias Mobilizon.Federation.ActivityStream.Convertible
   alias Mobilizon.GraphQL.API.Utils, as: APIUtils
+  alias Mobilizon.Service.Activity.Event, as: EventActivity
   alias Mobilizon.Service.Formatter.HTML
   alias Mobilizon.Service.Notifications.Scheduler
   alias Mobilizon.Share
@@ -24,6 +25,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Events do
   def create(args, additional) do
     with args <- prepare_args_for_event(args),
          {:ok, %Event{} = event} <- EventsManager.create_event(args),
+         {:ok, _} <-
+           EventActivity.insert_activity(event, subject: "event_created"),
          event_as_data <- Convertible.model_to_as(event),
          audience <-
            Audience.calculate_to_and_cc_from_mentions(event),
@@ -38,6 +41,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Events do
   def update(%Event{} = old_event, args, additional) do
     with args <- prepare_args_for_event(args),
          {:ok, %Event{} = new_event} <- EventsManager.update_event(old_event, args),
+         {:ok, _} <-
+           EventActivity.insert_activity(new_event, subject: "event_updated"),
          {:ok, true} <- Cachex.del(:activity_pub, "event_#{new_event.uuid}"),
          event_as_data <- Convertible.model_to_as(new_event),
          audience <-
@@ -66,6 +71,8 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Events do
     with audience <-
            Audience.calculate_to_and_cc_from_mentions(event),
          {:ok, %Event{} = event} <- EventsManager.delete_event(event),
+         {:ok, _} <-
+           EventActivity.insert_activity(event, subject: "event_deleted"),
          {:ok, true} <- Cachex.del(:activity_pub, "event_#{event.uuid}"),
          {:ok, %Tombstone{} = _tombstone} <-
            Tombstone.create_tombstone(%{uri: event.url, actor_id: actor.id}) do

lib/federation/activity_pub/types/members.ex

@@ -4,13 +4,14 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Members do
   alias Mobilizon.Actors.{Actor, Member}
   alias Mobilizon.Federation.ActivityPub
   alias Mobilizon.Federation.ActivityStream.Convertible
+  alias Mobilizon.Service.Activity.Member, as: MemberActivity
   require Logger
   import Mobilizon.Federation.ActivityPub.Utils, only: [make_update_data: 2]
 
   def update(
-        %Member{parent: %Actor{id: group_id}, id: member_id, role: current_role} = member,
+        %Member{parent: %Actor{id: group_id}, id: member_id, role: current_role} = old_member,
         %{role: updated_role} = args,
-        %{moderator: %Actor{url: moderator_url, id: moderator_id}} = additional
+        %{moderator: %Actor{url: moderator_url, id: moderator_id} = moderator} = additional
       ) do
     with additional <- Map.delete(additional, :moderator),
          {:has_rights_to_update_role, {:ok, %Member{role: moderator_role}}}
@@ -19,7 +20,13 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Members do
          {:is_only_admin, false} <-
            {:is_only_admin, check_admins_left(member_id, group_id, current_role, updated_role)},
          {:ok, %Member{} = member} <-
-           Actors.update_member(member, args),
+           Actors.update_member(old_member, args),
+         {:ok, _} <-
+           MemberActivity.insert_activity(member,
+             old_member: old_member,
+             moderator: moderator,
+             subject: "member_updated"
+           ),
          {:ok, true} <- Cachex.del(:activity_pub, "member_#{member_id}"),
          member_as_data <-
            Convertible.model_to_as(member),

lib/federation/activity_pub/types/posts.ex

@@ -7,6 +7,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Posts do
   alias Mobilizon.Federation.ActivityStream.Converter.Utils, as: ConverterUtils
   alias Mobilizon.Federation.ActivityStream.Convertible
   alias Mobilizon.Posts.Post
+  alias Mobilizon.Service.Activity.Post, as: PostsActivity
   require Logger
   import Mobilizon.Federation.ActivityPub.Utils, only: [make_create_data: 2, make_update_data: 2]
 
@@ -19,6 +20,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Posts do
     with args <- Map.update(args, :tags, [], &ConverterUtils.fetch_tags/1),
          {:ok, %Post{attributed_to_id: group_id, author_id: creator_id} = post} <-
            Posts.create_post(args),
+         {:ok, _} <- PostsActivity.insert_activity(post, subject: "post_created"),
          {:ok, %Actor{} = group} <- Actors.get_group_by_actor_id(group_id),
          %Actor{} = creator <- Actors.get_actor(creator_id),
          post_as_data <-
@@ -40,6 +42,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Posts do
     with args <- Map.update(args, :tags, [], &ConverterUtils.fetch_tags/1),
          {:ok, %Post{attributed_to_id: group_id, author_id: creator_id} = post} <-
            Posts.update_post(post, args),
+         {:ok, _} <- PostsActivity.insert_activity(post, subject: "post_updated"),
          {:ok, true} <- Cachex.del(:activity_pub, "post_#{post.slug}"),
          {:ok, %Actor{} = group} <- Actors.get_group_by_actor_id(group_id),
          %Actor{} = creator <- Actors.get_actor(creator_id),
@@ -76,6 +79,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Posts do
     }
 
     with {:ok, %Post{} = post} <- Posts.delete_post(post),
+         {:ok, _} <- PostsActivity.insert_activity(post, subject: "post_deleted"),
          {:ok, true} <- Cachex.del(:activity_pub, "post_#{post.slug}"),
          {:ok, %Tombstone{} = _tombstone} <-
            Tombstone.create_tombstone(%{uri: post.url, actor_id: actor.id}) do

lib/federation/activity_pub/types/resources.ex

@@ -5,6 +5,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
   alias Mobilizon.Federation.ActivityPub.Types.Entity
   alias Mobilizon.Federation.ActivityStream.Convertible
   alias Mobilizon.Resources.Resource
+  alias Mobilizon.Service.Activity.Resource, as: ResourceActivity
   alias Mobilizon.Service.RichMedia.Parser
   require Logger
 
@@ -33,6 +34,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
     with {:ok,
           %Resource{actor_id: group_id, creator_id: creator_id, parent_id: parent_id} = resource} <-
            Resources.create_resource(args),
+         {:ok, _} <- ResourceActivity.insert_activity(resource, subject: "resource_created"),
          {:ok, %Actor{} = group} <- Actors.get_group_by_actor_id(group_id),
          %Actor{url: creator_url} = creator <- Actors.get_actor(creator_id),
          resource_as_data <-
@@ -63,7 +65,12 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
   end
 
   @impl Entity
-  def update(%Resource{} = old_resource, %{parent_id: _parent_id} = args, additional) do
+  def update(
+        %Resource{parent_id: old_parent_id} = old_resource,
+        %{parent_id: parent_id} = args,
+        additional
+      )
+      when old_parent_id != parent_id do
     move(old_resource, args, additional)
   end
 
@@ -71,6 +78,11 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
   def update(%Resource{} = old_resource, %{title: title} = _args, additional) do
     with {:ok, %Resource{actor_id: group_id, creator_id: creator_id} = resource} <-
            Resources.update_resource(old_resource, %{title: title}),
+         {:ok, _} <-
+           ResourceActivity.insert_activity(resource,
+             subject: "resource_renamed",
+             old_resource: old_resource
+           ),
          {:ok, %Actor{} = group} <- Actors.get_group_by_actor_id(group_id),
          %Actor{url: creator_url} <- Actors.get_actor(creator_id),
          resource_as_data <-
@@ -100,6 +112,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
           %Resource{actor_id: group_id, creator_id: creator_id, parent_id: new_parent_id} =
             resource} <-
            Resources.update_resource(old_resource, args),
+         {:ok, _} <- ResourceActivity.insert_activity(resource, subject: "resource_moved"),
          old_parent <- Resources.get_resource(old_parent_id),
          new_parent <- Resources.get_resource(new_parent_id),
          {:ok, %Actor{} = group} <- Actors.get_group_by_actor_id(group_id),
@@ -146,6 +159,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.Resources do
     }
 
     with {:ok, _resource} <- Resources.delete_resource(resource),
+         {:ok, _} <- ResourceActivity.insert_activity(resource, subject: "resource_deleted"),
          {:ok, true} <- Cachex.del(:activity_pub, "resource_#{resource.id}") do
       {:ok, activity_data, actor, resource}
     end

lib/graphql/resolvers/activity.ex

@@ -0,0 +1,85 @@
+defmodule Mobilizon.GraphQL.Resolvers.Activity do
+  @moduledoc """
+  Handles the activity-related GraphQL calls.
+  """
+
+  import Mobilizon.Users.Guards
+  alias Mobilizon.{Activities, Actors, Discussions, Events, Posts, Resources, Users}
+  alias Mobilizon.Activities.Activity
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Events.Event
+  alias Mobilizon.Storage.Page
+  alias Mobilizon.Users.User
+
+  require Logger
+
+  def group_activity(%Actor{type: :Group, id: group_id}, %{page: page, limit: limit}, %{
+        context: %{current_user: %User{role: role} = user}
+      }) do
+    with {:actor, %Actor{id: actor_id} = _actor} <- {:actor, Users.get_actor_for_user(user)},
+         {:member, true} <- {:member, Actors.is_member?(actor_id, group_id) or is_moderator(role)} do
+      %Page{total: total, elements: elements} =
+        Activities.list_activities_for_group(group_id, actor_id, [], page, limit)
+
+      elements =
+        Enum.map(elements, fn %Activity{} = activity ->
+          activity
+          |> Map.update(:subject_params, %{}, &transform_params/1)
+          |> Map.put(:object, get_object(activity))
+        end)
+
+      {:ok, %Page{total: total, elements: elements}}
+    else
+      {:member, false} ->
+        {:error, :unauthorized}
+    end
+  end
+
+  def group_activity(_, _, _) do
+    {:error, :unauthenticated}
+  end
+
+  defp get_object(%Activity{object_type: object_type, object_id: object_id}) do
+    get_object(object_type, object_id)
+  end
+
+  defp get_object(_, nil), do: nil
+
+  defp get_object(:event, event_id) do
+    case Events.get_event(event_id) do
+      {:ok, %Event{} = event} -> event
+      _ -> nil
+    end
+  end
+
+  defp get_object(:post, post_id) do
+    Posts.get_post(post_id)
+  end
+
+  defp get_object(:member, member_id) do
+    Actors.get_member(member_id)
+  end
+
+  defp get_object(:resource, resource_id) do
+    Resources.get_resource(resource_id)
+  end
+
+  defp get_object(:discussion, discussion_id) do
+    Discussions.get_discussion(discussion_id)
+  end
+
+  defp get_object(:group, group_id) do
+    Actors.get_actor(group_id)
+  end
+
+  @spec transform_params(map()) :: list()
+  defp transform_params(params) do
+    Enum.map(params, fn {key, value} -> %{key: key, value: transform_value(value)} end)
+  end
+
+  defp transform_value(value) when is_list(value) do
+    Enum.join(value, ",")
+  end
+
+  defp transform_value(value), do: value
+end

lib/graphql/schema.ex

@@ -29,6 +29,7 @@ defmodule Mobilizon.GraphQL.Schema do
   import_types(Schema.Custom.UUID)
   import_types(Schema.Custom.Point)
 
+  import_types(Schema.ActivityType)
   import_types(Schema.UserType)
   import_types(Schema.MediaType)
   import_types(Schema.ActorInterface)

lib/graphql/schema/activity.ex

@@ -0,0 +1,78 @@
+defmodule Mobilizon.GraphQL.Schema.ActivityType do
+  @moduledoc """
+  Schema representation for Activity
+  """
+  use Absinthe.Schema.Notation
+
+  alias Mobilizon.Actors.{Actor, Member}
+  alias Mobilizon.Discussions.Discussion
+  alias Mobilizon.Events.Event
+  alias Mobilizon.Posts.Post
+  alias Mobilizon.Resources.Resource
+
+  enum :activity_type do
+    value(:event, description: "Activities concerning events")
+    value(:post, description: "Activities concerning posts")
+    value(:discussion, description: "Activities concerning discussions")
+    value(:resource, description: "Activities concerning resources")
+    value(:group, description: "Activities concerning group settings")
+    value(:member, description: "Activities concerning members")
+  end
+
+  object :activity_param_item do
+    field(:key, :string)
+    field(:value, :string)
+  end
+
+  interface :activity_object do
+    field(:id, :id)
+
+    resolve_type(fn
+      %Event{}, _ ->
+        :event
+
+      %Post{}, _ ->
+        :post
+
+      %Actor{type: "Group"}, _ ->
+        :group
+
+      %Member{}, _ ->
+        :member
+
+      %Resource{}, _ ->
+        :resource
+
+      %Discussion{}, _ ->
+        :discussion
+
+      %Actor{type: :Group}, _ ->
+        :group
+
+      _, _ ->
+        nil
+    end)
+  end
+
+  @desc """
+  A paginated list of activity items
+  """
+  object :paginated_activity_list do
+    field(:elements, list_of(:activity), description: "A list of activities")
+    field(:total, :integer, description: "The total number of elements in the list")
+  end
+
+  object :activity do
+    field(:id, :id, description: "The activity item ID")
+    field(:inserted_at, :datetime, description: "When was the activity inserted")
+    field(:priority, :integer)
+    field(:type, :activity_type)
+    field(:subject, :string)
+    field(:subject_params, list_of(:activity_param_item))
+    field(:message, :string)
+    field(:message_params, list_of(:activity_param_item))
+    field(:object, :activity_object)
+    field(:author, :actor)
+    field(:group, :group)
+  end
+end

lib/graphql/schema/actors/group.ex

@@ -10,6 +10,7 @@ defmodule Mobilizon.GraphQL.Schema.Actors.GroupType do
   alias Mobilizon.Addresses
 
   alias Mobilizon.GraphQL.Resolvers.{
+    Activity,
     Discussion,
     Followers,
     Group,
@@ -28,7 +29,7 @@ defmodule Mobilizon.GraphQL.Schema.Actors.GroupType do
   Represents a group of actors
   """
   object :group do
-    interfaces([:actor, :interactable])
+    interfaces([:actor, :interactable, :activity_object])
 
     field(:id, :id, description: "Internal ID for this group")
     field(:url, :string, description: "The ActivityPub actor's URL")
@@ -142,6 +143,19 @@ defmodule Mobilizon.GraphQL.Schema.Actors.GroupType do
       resolve(&Followers.find_followers_for_group/3)
       description("A paginated list of the followers this group has")
     end
+
+    field :activity, :paginated_activity_list do
+      arg(:page, :integer,
+        default_value: 1,
+        description: "The page in the paginated activity items list"
+      )
+
+      arg(:limit, :integer, default_value: 10, description: "The limit of activity items per page")
+
+      arg(:type, :activity_type, description: "Filter by type of activity")
+      resolve(&Activity.group_activity/3)
+      description("The group activity")
+    end
   end
 
   @desc """

lib/graphql/schema/actors/member.ex

@@ -10,6 +10,7 @@ defmodule Mobilizon.GraphQL.Schema.Actors.MemberType do
   Represents a member of a group
   """
   object :member do
+    interfaces([:activity_object])
     field(:id, :id, description: "The member's ID")
     field(:parent, :group, description: "Of which the profile is member")
     field(:actor, :person, description: "Which profile is member of")

lib/graphql/schema/discussions/discussion.ex

@@ -11,6 +11,7 @@ defmodule Mobilizon.GraphQL.Schema.Discussions.DiscussionType do
 
   @desc "A discussion"
   object :discussion do
+    interfaces([:activity_object])
     field(:id, :id, description: "Internal ID for this discussion")
     field(:title, :string, description: "The title for this discussion")
     field(:slug, :string, description: "The slug for the discussion")

lib/graphql/schema/event.ex

@@ -17,7 +17,7 @@ defmodule Mobilizon.GraphQL.Schema.EventType do
 
   @desc "An event"
   object :event do
-    interfaces([:action_log_object, :interactable])
+    interfaces([:action_log_object, :interactable, :activity_object])
     field(:id, :id, description: "Internal ID for this event")
     field(:uuid, :uuid, description: "The Event UUID")
     field(:url, :string, description: "The ActivityPub Event URL")

lib/graphql/schema/post.ex

@@ -7,6 +7,7 @@ defmodule Mobilizon.GraphQL.Schema.PostType do
 
   @desc "A post"
   object :post do
+    interfaces([:activity_object])
     field(:id, :id, description: "The post's ID")
     field(:title, :string, description: "The post's title")
     field(:slug, :string, description: "The post's slug")

lib/graphql/schema/resource.ex

@@ -9,6 +9,7 @@ defmodule Mobilizon.GraphQL.Schema.ResourceType do
 
   @desc "A resource"
   object :resource do
+    interfaces([:activity_object])
     field(:id, :id, description: "The resource's ID")
     field(:title, :string, description: "The resource's title")
     field(:summary, :string, description: "The resource's summary")

lib/mobilizon/activities/activities.ex

@@ -0,0 +1,148 @@
+defmodule Mobilizon.Activities do
+  @moduledoc """
+  The Activities context.
+  """
+
+  import Ecto.Query, warn: false
+  import EctoEnum
+  alias Mobilizon.Activities.Activity
+  alias Mobilizon.Actors.Member
+  alias Mobilizon.Storage.{Page, Repo}
+
+  defenum(Priority,
+    very_low: 10,
+    low: 20,
+    medium: 30,
+    high: 40,
+    very_high: 50
+  )
+
+  @activity_types ["event", "post", "discussion", "resource", "group", "member"]
+  @event_activity_subjects ["event_created", "event_updated", "event_deleted", "comment_posted"]
+  @post_activity_subjects ["post_created", "post_updated", "post_deleted"]
+  @discussion_activity_subjects [
+    "discussion_created",
+    "discussion_replied",
+    "discussion_renamed",
+    "discussion_archived",
+    "discussion_deleted"
+  ]
+  @resource_activity_subjects [
+    "resource_created",
+    "resource_renamed",
+    "resource_moved",
+    "resource_deleted"
+  ]
+  @member_activity_subjects [
+    "member_request",
+    "member_invited",
+    "member_accepted_invitation",
+    "member_rejected_invitation",
+    "member_added",
+    "member_joined",
+    "member_approved",
+    "member_updated",
+    "member_removed",
+    "member_quit"
+  ]
+  @settings_activity_subjects ["group_created", "group_updated"]
+
+  @subjects @event_activity_subjects ++
+              @post_activity_subjects ++
+              @discussion_activity_subjects ++
+              @resource_activity_subjects ++
+              @member_activity_subjects ++ @settings_activity_subjects
+
+  @object_type ["event", "actor", "post", "discussion", "resource", "member", "group"]
+
+  defenum(Type, @activity_types)
+  defenum(Subject, @subjects)
+  defenum(ObjectType, @object_type)
+
+  @doc """
+  Returns the list of activities.
+
+  ## Examples
+
+      iex> list_activities()
+      [%Activity{}, ...]
+
+  """
+  def list_activities do
+    Repo.all(Activity)
+  end
+
+  @spec list_activities_for_group(
+          integer() | String.t(),
+          Keyword.t(),
+          integer() | nil,
+          integer() | nil
+        ) :: Page.t()
+  def list_activities_for_group(
+        group_id,
+        actor_asking_id,
+        filters \\ [],
+        page \\ nil,
+        limit \\ nil
+      ) do
+    Activity
+    |> where([a], a.group_id == ^group_id)
+    |> join(:inner, [a], m in Member,
+      on: m.parent_id == a.group_id and m.actor_id == ^actor_asking_id
+    )
+    |> where([a, m], a.inserted_at >= m.member_since)
+    |> filter_object_type(Keyword.get(filters, :type))
+    |> order_by(desc: :inserted_at)
+    |> preload([:author, :group])
+    |> Page.build_page(page, limit)
+  end
+
+  @doc """
+  Gets a single activity.
+
+  Raises `Ecto.NoResultsError` if the Activity does not exist.
+
+  ## Examples
+
+      iex> get_activity!(123)
+      %Activity{}
+
+      iex> get_activity!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_activity!(id), do: Repo.get!(Activity, id)
+
+  @doc """
+  Creates a activity.
+
+  ## Examples
+
+      iex> create_activity(%{field: value})
+      {:ok, %Activity{}}
+
+      iex> create_activity(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_activity(attrs \\ %{}) do
+    %Activity{}
+    |> Activity.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  def object_types, do: @object_type
+
+  def subjects, do: @subjects
+
+  def activity_types, do: @activity_types
+
+  @spec filter_object_type(Query.t(), atom()) :: Query.t()
+  defp filter_object_type(query, :type) do
+    where(query, [q], q.type == ^:type)
+  end
+
+  defp filter_object_type(query, _) do
+    query
+  end
+end

lib/mobilizon/activities/activity.ex

@@ -0,0 +1,77 @@
+defmodule Mobilizon.Activities.Activity do
+  @moduledoc """
+  Any activity for users
+  """
+
+  use Ecto.Schema
+  import Ecto.Changeset
+  alias Mobilizon.Activities.{ObjectType, Priority, Subject, Type}
+  alias Mobilizon.Actors.Actor
+
+  @required_attrs [:type, :subject, :author_id, :group_id, :inserted_at]
+  @optional_attrs [
+    :priority,
+    :subject_params,
+    :message,
+    :message_params,
+    :object_type,
+    :object_id
+  ]
+  @attrs @required_attrs ++ @optional_attrs
+
+  @type t :: %__MODULE__{
+          priority: Priority.t(),
+          type: Type.t(),
+          subject: Subject.t(),
+          subject_params: map(),
+          message: String.t(),
+          message_params: map(),
+          object_type: ObjectType.t(),
+          object_id: String.t(),
+          author: Actor.t(),
+          group: Actor.t()
+        }
+
+  schema "activities" do
+    field(:priority, Priority, default: :medium)
+    field(:type, Type)
+    field(:subject, Subject)
+    field(:subject_params, :map, default: %{})
+    field(:message, :string)
+    field(:message_params, :map, default: %{})
+    field(:object_type, ObjectType)
+    field(:object_id, :string)
+    field(:inserted_at, :utc_datetime)
+    belongs_to(:author, Actor)
+    belongs_to(:group, Actor)
+  end
+
+  @doc false
+  def changeset(activity, attrs) do
+    activity
+    |> cast(attrs, @attrs)
+    |> validate_required(@required_attrs)
+    |> stringify_params(:subject_params)
+    |> stringify_params(:message_params)
+  end
+
+  defp stringify_params(changeset, attr) do
+    stringified_params =
+      changeset
+      |> get_change(attr, %{})
+      |> Enum.map(fn {key, value} -> {key, stringify_struct(value)} end)
+      |> Map.new()
+
+    put_change(changeset, attr, stringified_params)
+  end
+
+  defp stringify_struct(%_{} = struct) do
+    association_fields = struct.__struct__.__schema__(:associations)
+
+    struct
+    |> Map.from_struct()
+    |> Map.drop(association_fields ++ [:__meta__])
+  end
+
+  defp stringify_struct(smth), do: smth
+end

lib/mobilizon/actors/actors.ex

@@ -66,6 +66,7 @@ defmodule Mobilizon.Actors do
   Gets a single actor.
   """
   @spec get_actor(integer | String.t()) :: Actor.t() | nil
+  def get_actor(nil), do: nil
   def get_actor(id), do: Repo.get(Actor, id)
 
   @doc """
@@ -860,7 +861,7 @@ defmodule Mobilizon.Actors do
   end
 
   @doc """
-  Returns the list of members for a group.
+  Returns a paginated list of members for a group.
   """
   @spec list_members_for_group(Actor.t(), list(atom()), integer | nil, integer | nil) :: Page.t()
   def list_members_for_group(
@@ -882,6 +883,13 @@ defmodule Mobilizon.Actors do
     |> Repo.all()
   end
 
+  @spec list_internal_actors_members_for_group(Actor.t(), list()) :: list(Actor.t())
+  def list_internal_actors_members_for_group(%Actor{id: group_id, type: :Group}, roles \\ []) do
+    group_id
+    |> group_internal_member_actor_query(roles)
+    |> Repo.all()
+  end
+
   @doc """
   Returns a paginated list of administrator members for a group.
   """
@@ -1512,6 +1520,16 @@ defmodule Mobilizon.Actors do
     |> select([m, _a], m)
   end
 
+  @spec group_internal_member_actor_query(integer(), list()) :: Ecto.Query.t()
+  defp group_internal_member_actor_query(group_id, role) do
+    Member
+    |> where([m], m.parent_id == ^group_id)
+    |> filter_member_role(role)
+    |> join(:inner, [m], a in Actor, on: m.actor_id == a.id)
+    |> where([_m, a], is_nil(a.domain))
+    |> select([_m, a], a)
+  end
+
   @spec group_internal_member_query(integer()) :: Ecto.Query.t()
   defp group_internal_member_query(group_id) do
     Member
@@ -1523,13 +1541,13 @@ defmodule Mobilizon.Actors do
   end
 
   @spec filter_member_role(Ecto.Query.t(), list(atom()) | atom()) :: Ecto.Query.t()
-  def filter_member_role(query, []), do: query
+  defp filter_member_role(query, []), do: query
 
-  def filter_member_role(query, roles) when is_list(roles) do
+  defp filter_member_role(query, roles) when is_list(roles) do
     where(query, [m], m.role in ^roles)
   end
 
-  def filter_member_role(query, role) when is_atom(role) do
+  defp filter_member_role(query, role) when is_atom(role) do
     from(m in query, where: m.role == ^role)
   end
 

lib/mobilizon/actors/member.ex

@@ -25,6 +25,7 @@ defmodule Mobilizon.Actors.Member do
   schema "members" do
     field(:role, MemberRole, default: :member)
     field(:url, :string)
+    field(:member_since, :utc_datetime)
 
     embeds_one :metadata, Metadata, on_replace: :delete do
       # TODO : Use this space to put notes when someone is invited / requested to join
@@ -64,6 +65,7 @@ defmodule Mobilizon.Actors.Member do
     |> cast(attrs, @attrs)
     |> cast_embed(:metadata, with: &metadata_changeset/2)
     |> ensure_url()
+    |> update_member_since()
     |> validate_required(@required_attrs)
     # On both parent_id and actor_id
     |> unique_constraint(:parent_id, name: :members_actor_parent_unique_index)
@@ -98,4 +100,29 @@ defmodule Mobilizon.Actors.Member do
     |> put_change(:id, uuid)
     |> put_change(:url, "#{Endpoint.url()}/member/#{uuid}")
   end
+
+  @spec update_member_since(Ecto.Changeset.t()) :: Ecto.Changeset.t()
+  defp update_member_since(%Ecto.Changeset{data: data} = changeset) do
+    new_role = get_change(changeset, :role)
+
+    cond do
+      new_role in [
+        :member,
+        :moderator,
+        :administrator,
+        :creator
+      ] ->
+        put_change(
+          changeset,
+          :member_since,
+          DateTime.truncate(data.member_since || DateTime.utc_now(), :second)
+        )
+
+      new_role in [:invited, :not_approved, :rejected] ->
+        put_change(changeset, :member_since, nil)
+
+      true ->
+        changeset
+    end
+  end
 end

lib/mobilizon/resources/resources.ex

@@ -115,7 +115,10 @@ defmodule Mobilizon.Resources do
     Multi.new()
     |> do_find_parent_path(Map.get(attrs, :parent_id))
     |> Multi.insert(:insert, fn %{find_parent_path: path} ->
-      Resource.changeset(%Resource{}, Map.put(attrs, :path, "#{path}/#{attrs.title}"))
+      Resource.changeset(
+        %Resource{},
+        Map.put(attrs, :path, "#{path}/#{String.replace(attrs.title, "/", "")}")
+      )
     end)
     |> Repo.transaction()
     |> case do
@@ -142,7 +145,11 @@ defmodule Mobilizon.Resources do
     |> update_children(resource, attrs)
     |> Multi.update(:update, fn %{find_parent_path: path} ->
       title = Map.get(attrs, :title, old_title)
-      Resource.changeset(resource, Map.put(attrs, :path, "#{path}/#{title}"))
+
+      Resource.changeset(
+        resource,
+        Map.put(attrs, :path, "#{path}/#{String.replace(title, "/", "")}")
+      )
     end)
     |> Repo.transaction()
     |> case do

lib/service/activity/activity.ex

@@ -0,0 +1,7 @@
+defmodule Mobilizon.Service.Activity do
+  @moduledoc """
+  Behavior for Activity creators
+  """
+
+  @callback insert_activity(entity :: struct(), options :: map()) :: {:ok, Oban.Job.t()}
+end

lib/service/activity/discussion.ex

@@ -0,0 +1,51 @@
+defmodule Mobilizon.Service.Activity.Discussion do
+  @moduledoc """
+  Insert a discussion activity
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Discussions.Discussion
+  alias Mobilizon.Service.Activity
+  alias Mobilizon.Service.Workers.ActivityBuilder
+
+  @behaviour Activity
+
+  @impl Activity
+  def insert_activity(discussion, options \\ [])
+
+  def insert_activity(
+        %Discussion{creator_id: creator_id, actor_id: actor_id} = discussion,
+        options
+      )
+      when not is_nil(creator_id) do
+    creator = Actors.get_actor(creator_id)
+    group = Actors.get_actor(actor_id)
+    subject = Keyword.fetch!(options, :subject)
+    author = Keyword.get(options, :moderator, creator)
+    author_id = Keyword.get(options, :actor_id, author.id)
+    old_discussion = Keyword.get(options, :old_discussion)
+
+    ActivityBuilder.enqueue(:build_activity, %{
+      "type" => "discussion",
+      "subject" => subject,
+      "subject_params" => subject_params(discussion, subject, old_discussion),
+      "group_id" => group.id,
+      "author_id" => author_id,
+      "object_type" => "discussion",
+      "object_id" => if(subject != "discussion_deleted", do: to_string(discussion.id), else: nil),
+      "inserted_at" => DateTime.utc_now()
+    })
+  end
+
+  def insert_activity(_, _), do: {:ok, nil}
+
+  @spec subject_params(Discussion.t(), String.t() | nil, Discussion.t() | nil) :: map()
+  defp subject_params(%Discussion{} = discussion, "discussion_renamed", old_discussion) do
+    discussion
+    |> subject_params(nil, nil)
+    |> Map.put(:old_discussion_title, old_discussion.title)
+  end
+
+  defp subject_params(%Discussion{} = discussion, _, _) do
+    %{discussion_slug: discussion.slug, discussion_title: discussion.title}
+  end
+end

lib/service/activity/event.ex

@@ -0,0 +1,39 @@
+defmodule Mobilizon.Service.Activity.Event do
+  @moduledoc """
+  Insert an event activity
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Events.Event
+  alias Mobilizon.Service.Activity
+  alias Mobilizon.Service.Workers.ActivityBuilder
+
+  @behaviour Activity
+
+  @impl Activity
+  def insert_activity(event, options \\ [])
+
+  def insert_activity(
+        %Event{attributed_to_id: attributed_to_id, organizer_actor_id: organizer_actor_id} =
+          event,
+        options
+      )
+      when not is_nil(attributed_to_id) do
+    actor = Actors.get_actor(organizer_actor_id)
+    group = Actors.get_actor(attributed_to_id)
+    subject = Keyword.fetch!(options, :subject)
+
+    ActivityBuilder.enqueue(:build_activity, %{
+      "type" => "event",
+      "subject" => subject,
+      "subject_params" => %{event_uuid: event.uuid, event_title: event.title},
+      "group_id" => group.id,
+      "author_id" => actor.id,
+      "object_type" => "event",
+      "object_id" => if(subject != "event_deleted", do: to_string(event.id), else: nil),
+      "inserted_at" => DateTime.utc_now()
+    })
+  end
+
+  @impl Activity
+  def insert_activity(_, _), do: {:ok, nil}
+end

lib/service/activity/group.ex

@@ -0,0 +1,150 @@
+defmodule Mobilizon.Service.Activity.Group do
+  @moduledoc """
+  Insert a group setting activity
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Service.Activity
+  alias Mobilizon.Service.Workers.ActivityBuilder
+
+  @behaviour Activity
+
+  @impl Activity
+  def insert_activity(group, options \\ [])
+
+  def insert_activity(
+        %Actor{type: :Group, id: group_id},
+        options
+      ) do
+    with %Actor{type: :Group} = group <- Actors.get_actor(group_id),
+         subject when not is_nil(subject) <- Keyword.get(options, :subject),
+         actor_id <- Keyword.get(options, :actor_id),
+         default_updater_actor <- Actors.get_actor(actor_id),
+         %Actor{id: actor_id} <-
+           Keyword.get(options, :updater_actor, default_updater_actor),
+         old_group <- Keyword.get(options, :old_group) do
+      ActivityBuilder.enqueue(:build_activity, %{
+        "type" => "group",
+        "subject" => subject,
+        "subject_params" => subject_params(group, subject, old_group),
+        "group_id" => group.id,
+        "author_id" => actor_id,
+        "object_type" => "group",
+        "object_id" => to_string(group.id),
+        "inserted_at" => DateTime.utc_now()
+      })
+    else
+      _ -> {:ok, nil}
+    end
+  end
+
+  def insert_activity(_, _), do: {:ok, nil}
+
+  @spec subject_params(Actor.t(), String.t() | nil, Actor.t() | nil) :: map()
+  defp subject_params(%Actor{} = group, "group_updated", %Actor{} = old_group) do
+    group
+    |> subject_params(nil, nil)
+    |> maybe_put_old_name_if_updated(old_group.name, group.name)
+    |> maybe_put_summary_change_if_updated(old_group.summary, group.summary)
+    |> maybe_put_old_visibility_if_updated(old_group.visibility, group.visibility)
+    |> maybe_put_old_openness_if_updated(old_group.openness, group.openness)
+    |> maybe_put_address_change_if_updated(
+      old_group.physical_address_id,
+      group.physical_address_id
+    )
+    |> maybe_put_avatar_change_if_updated(
+      old_group.avatar,
+      group.avatar
+    )
+    |> maybe_put_banner_change_if_updated(
+      old_group.banner,
+      group.banner
+    )
+    |> maybe_put_manually_approves_followers_change_if_updated(
+      old_group.manually_approves_followers,
+      group.manually_approves_followers
+    )
+  end
+
+  defp subject_params(
+         %Actor{preferred_username: preferred_username, domain: domain, name: name},
+         _,
+         _
+       ) do
+    %{
+      group_preferred_username: preferred_username,
+      group_name: name,
+      group_domain: domain,
+      group_changes: []
+    }
+  end
+
+  @spec maybe_put_old_name_if_updated(map(), String.t(), String.t()) :: map()
+  defp maybe_put_old_name_if_updated(params, old_group_name, new_group_name)
+       when old_group_name != new_group_name do
+    params
+    |> Map.update(:group_changes, [], fn changes -> changes ++ [:name] end)
+    |> Map.put(:old_group_name, old_group_name)
+  end
+
+  defp maybe_put_old_name_if_updated(params, _, _), do: params
+
+  defp maybe_put_summary_change_if_updated(params, old_summary, new_summary)
+       when old_summary != new_summary do
+    Map.update(params, :group_changes, [], fn changes -> changes ++ [:summary] end)
+  end
+
+  defp maybe_put_summary_change_if_updated(params, _, _), do: params
+
+  defp maybe_put_old_visibility_if_updated(params, old_group_visibility, new_group_visibility)
+       when old_group_visibility != new_group_visibility do
+    params
+    |> Map.update(:group_changes, [], fn changes -> changes ++ [:visibility] end)
+    |> Map.put(:old_group_visibility, old_group_visibility)
+  end
+
+  defp maybe_put_old_visibility_if_updated(params, _, _), do: params
+
+  defp maybe_put_old_openness_if_updated(params, old_group_openness, new_group_openness)
+       when old_group_openness != new_group_openness do
+    params
+    |> Map.update(:group_changes, [], fn changes -> changes ++ [:openness] end)
+    |> Map.put(:old_group_openness, old_group_openness)
+  end
+
+  defp maybe_put_old_openness_if_updated(params, _, _), do: params
+
+  defp maybe_put_address_change_if_updated(params, old_address_id, new_address_id)
+       when old_address_id != new_address_id do
+    Map.update(params, :group_changes, [], fn changes -> changes ++ [:address] end)
+  end
+
+  defp maybe_put_address_change_if_updated(params, _, _), do: params
+
+  defp maybe_put_avatar_change_if_updated(params, old_avatar, new_avatar)
+       when old_avatar != new_avatar do
+    Map.update(params, :group_changes, [], fn changes -> changes ++ [:avatar] end)
+  end
+
+  defp maybe_put_avatar_change_if_updated(params, _, _), do: params
+
+  defp maybe_put_banner_change_if_updated(params, old_banner, new_banner)
+       when old_banner != new_banner do
+    Map.update(params, :group_changes, [], fn changes -> changes ++ [:banner] end)
+  end
+
+  defp maybe_put_banner_change_if_updated(params, _, _), do: params
+
+  defp maybe_put_manually_approves_followers_change_if_updated(
+         params,
+         old_group_manually_approves_followers,
+         new_group_manually_approves_followers
+       )
+       when old_group_manually_approves_followers != new_group_manually_approves_followers do
+    params
+    |> Map.update(:group_changes, [], fn changes -> changes ++ [:manually_approves_followers] end)
+    |> Map.put(:old_group_manually_approves_followers, old_group_manually_approves_followers)
+  end
+
+  defp maybe_put_manually_approves_followers_change_if_updated(params, _, _), do: params
+end

lib/service/activity/member.ex

@@ -0,0 +1,97 @@
+defmodule Mobilizon.Service.Activity.Member do
+  @moduledoc """
+  Insert a member activity
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Actors.{Actor, Member}
+  alias Mobilizon.Service.Activity
+  alias Mobilizon.Service.Workers.ActivityBuilder
+
+  @behaviour Activity
+
+  @impl Activity
+  def insert_activity(member, options \\ [])
+
+  def insert_activity(
+        %Member{parent_id: parent_id, id: member_id} = new_member,
+        options
+      ) do
+    subject = Keyword.get(options, :subject)
+
+    with author_id <- get_author(new_member, options),
+         object_id <- if(subject == "member_removed", do: nil, else: to_string(member_id)) do
+      ActivityBuilder.enqueue(:build_activity, %{
+        "type" => "member",
+        "subject" => subject,
+        "subject_params" => get_subject_params(new_member, options),
+        "group_id" => parent_id,
+        "author_id" => author_id,
+        "object_type" => "member",
+        "object_id" => object_id,
+        "inserted_at" => DateTime.utc_now()
+      })
+    end
+  end
+
+  def insert_activity(_, _), do: {:ok, nil}
+
+  @spec get_author(Member.t(), Member.t() | nil) :: String.t() | integer()
+  defp get_author(%Member{actor_id: actor_id}, options) do
+    moderator = Keyword.get(options, :moderator)
+
+    if is_nil(moderator) do
+      actor_id
+    else
+      moderator.id
+    end
+  end
+
+  @spec get_subject_params(Member.t(), Keyword.t()) :: map()
+  defp get_subject_params(%Member{actor: actor, role: role, id: member_id}, options) do
+    # We may need to preload the member to make sure the actor exists
+    actor =
+      case actor do
+        %Actor{} = actor ->
+          actor
+
+        _ ->
+          case Actors.get_member(member_id) do
+            %Member{actor: actor} -> actor
+            _ -> nil
+          end
+      end
+
+    moderator = Keyword.get(options, :moderator)
+    old_member = Keyword.get(options, :old_member)
+
+    subject_params = %{
+      member_role: String.upcase(to_string(role))
+    }
+
+    subject_params =
+      if(is_nil(actor),
+        do: subject_params,
+        else:
+          Map.put(
+            subject_params,
+            :member_preferred_username,
+            Actor.preferred_username_and_domain(actor)
+          )
+      )
+
+    subject_params =
+      if(is_nil(old_member),
+        do: subject_params,
+        else: Map.put(subject_params, :old_role, String.upcase(to_string(old_member.role)))
+      )
+
+    if is_nil(moderator),
+      do: subject_params,
+      else:
+        Map.put(
+          subject_params,
+          :moderator_preferred_username,
+          Actor.preferred_username_and_domain(moderator)
+        )
+  end
+end

lib/service/activity/posts.ex

@@ -0,0 +1,37 @@
+defmodule Mobilizon.Service.Activity.Post do
+  @moduledoc """
+  Insert an post activity
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Posts.Post
+  alias Mobilizon.Service.Activity
+  alias Mobilizon.Service.Workers.ActivityBuilder
+
+  @behaviour Activity
+
+  @impl Activity
+  def insert_activity(post, options \\ [])
+
+  def insert_activity(
+        %Post{attributed_to_id: attributed_to_id, author_id: author_id} = post,
+        options
+      )
+      when not is_nil(attributed_to_id) do
+    author = Actors.get_actor(author_id)
+    group = Actors.get_actor(attributed_to_id)
+    subject = Keyword.fetch!(options, :subject)
+
+    ActivityBuilder.enqueue(:build_activity, %{
+      "type" => "post",
+      "subject" => subject,
+      "subject_params" => %{post_slug: post.slug, post_title: post.title},
+      "group_id" => group.id,
+      "author_id" => author.id,
+      "object_type" => "post",
+      "object_id" => if(subject != "post_deleted", do: to_string(post.id), else: nil),
+      "inserted_at" => DateTime.utc_now()
+    })
+  end
+
+  def insert_activity(_, _), do: {:ok, nil}
+end

lib/service/activity/resource.ex

@@ -0,0 +1,50 @@
+defmodule Mobilizon.Service.Activity.Resource do
+  @moduledoc """
+  Insert an resource activity
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Resources.Resource
+  alias Mobilizon.Service.Activity
+  alias Mobilizon.Service.Workers.ActivityBuilder
+
+  @behaviour Activity
+
+  @impl Activity
+  def insert_activity(resource, options \\ [])
+
+  def insert_activity(
+        %Resource{actor_id: actor_id, creator_id: creator_id} = resource,
+        options
+      )
+      when not is_nil(actor_id) do
+    actor = Actors.get_actor(creator_id)
+    group = Actors.get_actor(actor_id)
+    subject = Keyword.fetch!(options, :subject)
+    old_resource = Keyword.get(options, :old_resource)
+
+    ActivityBuilder.enqueue(:build_activity, %{
+      "type" => "resource",
+      "subject" => subject,
+      "subject_params" => subject_params(resource, subject, old_resource),
+      "group_id" => group.id,
+      "author_id" => actor.id,
+      "object_type" => "resource",
+      "object_id" => if(subject != "resource_deleted", do: to_string(resource.id), else: nil),
+      "inserted_at" => DateTime.utc_now()
+    })
+  end
+
+  @impl Activity
+  def insert_activity(_, _), do: {:ok, nil}
+
+  @spec subject_params(Resource.t(), String.t() | nil, Resource.t() | nil) :: map()
+  defp subject_params(%Resource{} = resource, "resource_renamed", old_resource) do
+    resource
+    |> subject_params(nil, nil)
+    |> Map.put(:old_resource_title, old_resource.title)
+  end
+
+  defp subject_params(%Resource{path: path, title: title}, _, _) do
+    %{resource_path: path, resource_title: title}
+  end
+end

lib/service/workers/activity_builder.ex

@@ -0,0 +1,22 @@
+defmodule Mobilizon.Service.Workers.ActivityBuilder do
+  @moduledoc """
+  Worker to insert activity items in users feeds
+  """
+
+  alias Mobilizon.Activities
+  alias Mobilizon.Activities.Activity
+
+  use Mobilizon.Service.Workers.Helper, queue: "activity"
+
+  @impl Oban.Worker
+  def perform(%Job{args: args}) do
+    with {"build_activity", args} <- Map.pop(args, "op") do
+      build_activity(args)
+    end
+  end
+
+  @spec build_activity(map()) :: {:ok, Activity.t()}
+  def build_activity(args) do
+    Activities.create_activity(args)
+  end
+end

lib/web/endpoint.ex

@@ -10,7 +10,10 @@ defmodule Mobilizon.Web.Endpoint do
   use Absinthe.Phoenix.Endpoint
 
   plug(Mobilizon.Web.Plugs.SetLocalePlug)
-  plug(Mobilizon.Web.Plugs.HTTPSecurityPlug)
+
+  if Application.fetch_env!(:mobilizon, :env) !== :dev do
+    plug(Mobilizon.Web.Plugs.HTTPSecurityPlug)
+  end
 
   # For e2e tests
   if Application.get_env(:mobilizon, :sql_sandbox) do