Merge branch 'develop' into issue/1276

18 files changed, 280 insertions, 302 deletions

diff --git a/lib/pleroma/application.ex b/lib/pleroma/application.ex
index 2c8889ce5..27758cf94 100644
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@@ -42,12 +42,9 @@ defmodule Pleroma.Application do
     children =
       [
         Pleroma.Repo,
-        Pleroma.Scheduler,
         Pleroma.Config.TransferTask,
         Pleroma.Emoji,
         Pleroma.Captcha,
-        Pleroma.Daemons.ScheduledActivityDaemon,
-        Pleroma.Daemons.ActivityExpirationDaemon,
         Pleroma.Plugs.RateLimiter.Supervisor
       ] ++
         cachex_children() ++
@@ -58,7 +55,6 @@ defmodule Pleroma.Application do
           {Oban, Pleroma.Config.get(Oban)}
         ] ++
         task_children(@env) ++
-        oauth_cleanup_child(oauth_cleanup_enabled?()) ++
         streamer_child(@env) ++
         chat_child(@env, chat_enabled?()) ++
         [
@@ -160,20 +156,12 @@ defmodule Pleroma.Application do
 
   defp chat_enabled?, do: Pleroma.Config.get([:chat, :enabled])
 
-  defp oauth_cleanup_enabled?,
-    do: Pleroma.Config.get([:oauth2, :clean_expired_tokens], false)
-
   defp streamer_child(:test), do: []
 
   defp streamer_child(_) do
     [Pleroma.Web.Streamer.supervisor()]
   end
 
-  defp oauth_cleanup_child(true),
-    do: [Pleroma.Web.OAuth.Token.CleanWorker]
-
-  defp oauth_cleanup_child(_), do: []
-
   defp chat_child(_env, true) do
     [Pleroma.Web.ChatChannel.ChatChannelState]
   end
diff --git a/lib/pleroma/daemons/activity_expiration_daemon.ex b/lib/pleroma/daemons/activity_expiration_daemon.ex
deleted file mode 100644
index cab7628c4..000000000
--- a/lib/pleroma/daemons/activity_expiration_daemon.ex
+++ /dev/null
@@ -1,66 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Daemons.ActivityExpirationDaemon do
-  alias Pleroma.Activity
-  alias Pleroma.ActivityExpiration
-  alias Pleroma.Config
-  alias Pleroma.Repo
-  alias Pleroma.User
-  alias Pleroma.Web.CommonAPI
-
-  require Logger
-  use GenServer
-  import Ecto.Query
-
-  @schedule_interval :timer.minutes(1)
-
-  def start_link(_) do
-    GenServer.start_link(__MODULE__, nil)
-  end
-
-  @impl true
-  def init(_) do
-    if Config.get([ActivityExpiration, :enabled]) do
-      schedule_next()
-      {:ok, nil}
-    else
-      :ignore
-    end
-  end
-
-  def perform(:execute, expiration_id) do
-    try do
-      expiration =
-        ActivityExpiration
-        |> where([e], e.id == ^expiration_id)
-        |> Repo.one!()
-
-      activity = Activity.get_by_id_with_object(expiration.activity_id)
-      user = User.get_by_ap_id(activity.object.data["actor"])
-      CommonAPI.delete(activity.id, user)
-    rescue
-      error ->
-        Logger.error("#{__MODULE__} Couldn't delete expired activity: #{inspect(error)}")
-    end
-  end
-
-  @impl true
-  def handle_info(:perform, state) do
-    ActivityExpiration.due_expirations(@schedule_interval)
-    |> Enum.each(fn expiration ->
-      Pleroma.Workers.ActivityExpirationWorker.enqueue(
-        "activity_expiration",
-        %{"activity_expiration_id" => expiration.id}
-      )
-    end)
-
-    schedule_next()
-    {:noreply, state}
-  end
-
-  defp schedule_next do
-    Process.send_after(self(), :perform, @schedule_interval)
-  end
-end
diff --git a/lib/pleroma/daemons/digest_email_daemon.ex b/lib/pleroma/daemons/digest_email_daemon.ex
deleted file mode 100644
index b4c8eaad9..000000000
--- a/lib/pleroma/daemons/digest_email_daemon.ex
+++ /dev/null
@@ -1,42 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Daemons.DigestEmailDaemon do
-  alias Pleroma.Repo
-  alias Pleroma.Workers.DigestEmailsWorker
-
-  import Ecto.Query
-
-  def perform do
-    config = Pleroma.Config.get([:email_notifications, :digest])
-    negative_interval = -Map.fetch!(config, :interval)
-    inactivity_threshold = Map.fetch!(config, :inactivity_threshold)
-    inactive_users_query = Pleroma.User.list_inactive_users_query(inactivity_threshold)
-
-    now = NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)
-
-    from(u in inactive_users_query,
-      where: fragment(~s(? ->'digest' @> 'true'), u.email_notifications),
-      where: u.last_digest_emailed_at < datetime_add(^now, ^negative_interval, "day"),
-      select: u
-    )
-    |> Repo.all()
-    |> Enum.each(fn user ->
-      DigestEmailsWorker.enqueue("digest_email", %{"user_id" => user.id})
-    end)
-  end
-
-  @doc """
-  Send digest email to the given user.
-  Updates `last_digest_emailed_at` field for the user and returns the updated user.
-  """
-  @spec perform(Pleroma.User.t()) :: Pleroma.User.t()
-  def perform(user) do
-    with %Swoosh.Email{} = email <- Pleroma.Emails.UserEmail.digest_email(user) do
-      Pleroma.Emails.Mailer.deliver_async(email)
-    end
-
-    Pleroma.User.touch_last_digest_emailed_at(user)
-  end
-end
diff --git a/lib/pleroma/daemons/scheduled_activity_daemon.ex b/lib/pleroma/daemons/scheduled_activity_daemon.ex
deleted file mode 100644
index aee5f723a..000000000
--- a/lib/pleroma/daemons/scheduled_activity_daemon.ex
+++ /dev/null
@@ -1,62 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Daemons.ScheduledActivityDaemon do
-  @moduledoc """
-  Sends scheduled activities to the job queue.
-  """
-
-  alias Pleroma.Config
-  alias Pleroma.ScheduledActivity
-  alias Pleroma.User
-  alias Pleroma.Web.CommonAPI
-
-  use GenServer
-  require Logger
-
-  @schedule_interval :timer.minutes(1)
-
-  def start_link(_) do
-    GenServer.start_link(__MODULE__, nil)
-  end
-
-  def init(_) do
-    if Config.get([ScheduledActivity, :enabled]) do
-      schedule_next()
-      {:ok, nil}
-    else
-      :ignore
-    end
-  end
-
-  def perform(:execute, scheduled_activity_id) do
-    try do
-      {:ok, scheduled_activity} = ScheduledActivity.delete(scheduled_activity_id)
-      %User{} = user = User.get_cached_by_id(scheduled_activity.user_id)
-      {:ok, _result} = CommonAPI.post(user, scheduled_activity.params)
-    rescue
-      error ->
-        Logger.error(
-          "#{__MODULE__} Couldn't create a status from the scheduled activity: #{inspect(error)}"
-        )
-    end
-  end
-
-  def handle_info(:perform, state) do
-    ScheduledActivity.due_activities(@schedule_interval)
-    |> Enum.each(fn scheduled_activity ->
-      Pleroma.Workers.ScheduledActivityWorker.enqueue(
-        "execute",
-        %{"activity_id" => scheduled_activity.id}
-      )
-    end)
-
-    schedule_next()
-    {:noreply, state}
-  end
-
-  defp schedule_next do
-    Process.send_after(self(), :perform, @schedule_interval)
-  end
-end
diff --git a/lib/pleroma/docs/generator.ex b/lib/pleroma/docs/generator.ex
index 6b12dcdd9..e0fc8cd02 100644
--- a/lib/pleroma/docs/generator.ex
+++ b/lib/pleroma/docs/generator.ex
@@ -13,7 +13,7 @@ defmodule Pleroma.Docs.Generator do
       |> Enum.filter(&String.ends_with?(&1, ".ex"))
       |> Enum.map(fn filename ->
         module = filename |> String.trim_trailing(".ex") |> Macro.camelize()
-        String.to_existing_atom(start <> module)
+        String.to_atom(start <> module)
       end)
     end
   end
diff --git a/lib/pleroma/scheduled_activity.ex b/lib/pleroma/scheduled_activity.ex
index fea2cf3ff..e81bfcd7d 100644
--- a/lib/pleroma/scheduled_activity.ex
+++ b/lib/pleroma/scheduled_activity.ex
@@ -5,15 +5,19 @@
 defmodule Pleroma.ScheduledActivity do
   use Ecto.Schema
 
+  alias Ecto.Multi
   alias Pleroma.Config
   alias Pleroma.Repo
   alias Pleroma.ScheduledActivity
   alias Pleroma.User
   alias Pleroma.Web.CommonAPI.Utils
+  alias Pleroma.Workers.ScheduledActivityWorker
 
   import Ecto.Query
   import Ecto.Changeset
 
+  @type t :: %__MODULE__{}
+
   @min_offset :timer.minutes(5)
 
   schema "scheduled_activities" do
@@ -105,16 +109,32 @@ defmodule Pleroma.ScheduledActivity do
   end
 
   def new(%User{} = user, attrs) do
-    %ScheduledActivity{user_id: user.id}
-    |> changeset(attrs)
+    changeset(%ScheduledActivity{user_id: user.id}, attrs)
   end
 
+  @doc """
+  Creates ScheduledActivity and add to queue to perform at scheduled_at date
+  """
+  @spec create(User.t(), map()) :: {:ok, ScheduledActivity.t()} | {:error, Ecto.Changeset.t()}
   def create(%User{} = user, attrs) do
-    user
-    |> new(attrs)
-    |> Repo.insert()
+    Multi.new()
+    |> Multi.insert(:scheduled_activity, new(user, attrs))
+    |> maybe_add_jobs(Config.get([ScheduledActivity, :enabled]))
+    |> Repo.transaction()
+    |> transaction_response
+  end
+
+  defp maybe_add_jobs(multi, true) do
+    multi
+    |> Multi.run(:scheduled_activity_job, fn _repo, %{scheduled_activity: activity} ->
+      %{activity_id: activity.id}
+      |> ScheduledActivityWorker.new(scheduled_at: activity.scheduled_at)
+      |> Oban.insert()
+    end)
   end
 
+  defp maybe_add_jobs(multi, _), do: multi
+
   def get(%User{} = user, scheduled_activity_id) do
     ScheduledActivity
     |> where(user_id: ^user.id)
@@ -122,25 +142,43 @@ defmodule Pleroma.ScheduledActivity do
     |> Repo.one()
   end
 
-  def update(%ScheduledActivity{} = scheduled_activity, attrs) do
-    scheduled_activity
-    |> update_changeset(attrs)
-    |> Repo.update()
+  @spec update(ScheduledActivity.t(), map()) ::
+          {:ok, ScheduledActivity.t()} | {:error, Ecto.Changeset.t()}
+  def update(%ScheduledActivity{id: id} = scheduled_activity, attrs) do
+    with {:error, %Ecto.Changeset{valid?: true} = changeset} <-
+           {:error, update_changeset(scheduled_activity, attrs)} do
+      Multi.new()
+      |> Multi.update(:scheduled_activity, changeset)
+      |> Multi.update_all(:scheduled_job, job_query(id),
+        set: [scheduled_at: get_field(changeset, :scheduled_at)]
+      )
+      |> Repo.transaction()
+      |> transaction_response
+    end
   end
 
-  def delete(%ScheduledActivity{} = scheduled_activity) do
-    scheduled_activity
-    |> Repo.delete()
+  @doc "Deletes a ScheduledActivity and linked jobs."
+  @spec delete(ScheduledActivity.t() | binary() | integer) ::
+          {:ok, ScheduledActivity.t()} | {:error, Ecto.Changeset.t()}
+  def delete(%ScheduledActivity{id: id} = scheduled_activity) do
+    Multi.new()
+    |> Multi.delete(:scheduled_activity, scheduled_activity, stale_error_field: :id)
+    |> Multi.delete_all(:jobs, job_query(id))
+    |> Repo.transaction()
+    |> transaction_response
   end
 
   def delete(id) when is_binary(id) or is_integer(id) do
-    ScheduledActivity
-    |> where(id: ^id)
-    |> select([sa], sa)
-    |> Repo.delete_all()
-    |> case do
-      {1, [scheduled_activity]} -> {:ok, scheduled_activity}
-      _ -> :error
+    delete(%__MODULE__{id: id})
+  end
+
+  defp transaction_response(result) do
+    case result do
+      {:ok, %{scheduled_activity: scheduled_activity}} ->
+        {:ok, scheduled_activity}
+
+      {:error, _, changeset, _} ->
+        {:error, changeset}
     end
   end
 
@@ -158,4 +196,11 @@ defmodule Pleroma.ScheduledActivity do
     |> where([sa], sa.scheduled_at < ^naive_datetime)
     |> Repo.all()
   end
+
+  def job_query(scheduled_activity_id) do
+    from(j in Oban.Job,
+      where: j.queue == "scheduled_activities",
+      where: fragment("args ->> 'activity_id' = ?::text", ^to_string(scheduled_activity_id))
+    )
+  end
 end
diff --git a/lib/pleroma/scheduler.ex b/lib/pleroma/scheduler.ex
deleted file mode 100644
index d84cd99ad..000000000
--- a/lib/pleroma/scheduler.ex
+++ /dev/null
@@ -1,7 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Scheduler do
-  use Quantum.Scheduler, otp_app: :pleroma
-end
diff --git a/lib/pleroma/stats.ex b/lib/pleroma/stats.ex
index 8154a09b7..cf590fb01 100644
--- a/lib/pleroma/stats.ex
+++ b/lib/pleroma/stats.ex
@@ -9,22 +9,43 @@ defmodule Pleroma.Stats do
 
   use GenServer
 
-  @interval 1000 * 60 * 60
+  @init_state %{
+    peers: [],
+    stats: %{
+      domain_count: 0,
+      status_count: 0,
+      user_count: 0
+    }
+  }
 
   def start_link(_) do
-    GenServer.start_link(__MODULE__, initial_data(), name: __MODULE__)
+    GenServer.start_link(
+      __MODULE__,
+      @init_state,
+      name: __MODULE__
+    )
   end
 
+  @doc "Performs update stats"
   def force_update do
     GenServer.call(__MODULE__, :force_update)
   end
 
+  @doc "Performs collect stats"
+  def do_collect do
+    GenServer.cast(__MODULE__, :run_update)
+  end
+
+  @doc "Returns stats data"
+  @spec get_stats() :: %{domain_count: integer(), status_count: integer(), user_count: integer()}
   def get_stats do
     %{stats: stats} = GenServer.call(__MODULE__, :get_state)
 
     stats
   end
 
+  @doc "Returns list peers"
+  @spec get_peers() :: list(String.t())
   def get_peers do
     %{peers: peers} = GenServer.call(__MODULE__, :get_state)
 
@@ -32,7 +53,6 @@ defmodule Pleroma.Stats do
   end
 
   def init(args) do
-    Process.send(self(), :run_update, [])
     {:ok, args}
   end
 
@@ -45,17 +65,12 @@ defmodule Pleroma.Stats do
     {:reply, state, state}
   end
 
-  def handle_info(:run_update, _state) do
+  def handle_cast(:run_update, _state) do
     new_stats = get_stat_data()
 
-    Process.send_after(self(), :run_update, @interval)
     {:noreply, new_stats}
   end
 
-  defp initial_data do
-    %{peers: [], stats: %{}}
-  end
-
   defp get_stat_data do
     peers =
       from(
@@ -74,7 +89,11 @@ defmodule Pleroma.Stats do
 
     %{
       peers: peers,
-      stats: %{domain_count: domain_count, status_count: status_count, user_count: user_count}
+      stats: %{
+        domain_count: domain_count,
+        status_count: status_count,
+        user_count: user_count
+      }
     }
   end
 end
diff --git a/lib/pleroma/web/mastodon_api/controllers/status_controller.ex b/lib/pleroma/web/mastodon_api/controllers/status_controller.ex
index 1149fb469..287d1631c 100644
--- a/lib/pleroma/web/mastodon_api/controllers/status_controller.ex
+++ b/lib/pleroma/web/mastodon_api/controllers/status_controller.ex
@@ -124,15 +124,18 @@ defmodule Pleroma.Web.MastodonAPI.StatusController do
       ) do
     params = Map.put(params, "in_reply_to_status_id", params["in_reply_to_id"])
 
-    if ScheduledActivity.far_enough?(scheduled_at) do
-      with {:ok, scheduled_activity} <-
-             ScheduledActivity.create(user, %{"params" => params, "scheduled_at" => scheduled_at}) do
-        conn
-        |> put_view(ScheduledActivityView)
-        |> render("show.json", scheduled_activity: scheduled_activity)
-      end
+    with {:far_enough, true} <- {:far_enough, ScheduledActivity.far_enough?(scheduled_at)},
+         attrs <- %{"params" => params, "scheduled_at" => scheduled_at},
+         {:ok, scheduled_activity} <- ScheduledActivity.create(user, attrs) do
+      conn
+      |> put_view(ScheduledActivityView)
+      |> render("show.json", scheduled_activity: scheduled_activity)
     else
-      create(conn, Map.drop(params, ["scheduled_at"]))
+      {:far_enough, _} ->
+        create(conn, Map.drop(params, ["scheduled_at"]))
+
+      error ->
+        error
     end
   end
 
diff --git a/lib/pleroma/web/oauth/token/clean_worker.ex b/lib/pleroma/web/oauth/token/clean_worker.ex
deleted file mode 100644
index 3c9c580d5..000000000
--- a/lib/pleroma/web/oauth/token/clean_worker.ex
+++ /dev/null
@@ -1,34 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Web.OAuth.Token.CleanWorker do
-  @moduledoc """
-  The module represents functions to clean an expired oauth tokens.
-  """
-  use GenServer
-
-  @ten_seconds 10_000
-  @one_day 86_400_000
-
-  alias Pleroma.Web.OAuth.Token
-  alias Pleroma.Workers.BackgroundWorker
-
-  def start_link(_), do: GenServer.start_link(__MODULE__, %{})
-
-  def init(_) do
-    Process.send_after(self(), :perform, @ten_seconds)
-    {:ok, nil}
-  end
-
-  @doc false
-  def handle_info(:perform, state) do
-    BackgroundWorker.enqueue("clean_expired_tokens", %{})
-    interval = Pleroma.Config.get([:oauth2, :clean_expired_tokens_interval], @one_day)
-
-    Process.send_after(self(), :perform, interval)
-    {:noreply, state}
-  end
-
-  def perform(:clean), do: Token.delete_expired_tokens()
-end
diff --git a/lib/pleroma/workers/activity_expiration_worker.ex b/lib/pleroma/workers/activity_expiration_worker.ex
deleted file mode 100644
index 4e3e4195f..000000000
--- a/lib/pleroma/workers/activity_expiration_worker.ex
+++ /dev/null
@@ -1,18 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Workers.ActivityExpirationWorker do
-  use Pleroma.Workers.WorkerHelper, queue: "activity_expiration"
-
-  @impl Oban.Worker
-  def perform(
-        %{
-          "op" => "activity_expiration",
-          "activity_expiration_id" => activity_expiration_id
-        },
-        _job
-      ) do
-    Pleroma.Daemons.ActivityExpirationDaemon.perform(:execute, activity_expiration_id)
-  end
-end
diff --git a/lib/pleroma/workers/background_worker.ex b/lib/pleroma/workers/background_worker.ex
index 323a4da1e..ac2fe6946 100644
--- a/lib/pleroma/workers/background_worker.ex
+++ b/lib/pleroma/workers/background_worker.ex
@@ -6,7 +6,6 @@ defmodule Pleroma.Workers.BackgroundWorker do
   alias Pleroma.Activity
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy
-  alias Pleroma.Web.OAuth.Token.CleanWorker
 
   use Pleroma.Workers.WorkerHelper, queue: "background"
 
@@ -55,10 +54,6 @@ defmodule Pleroma.Workers.BackgroundWorker do
     User.perform(:follow_import, follower, followed_identifiers)
   end
 
-  def perform(%{"op" => "clean_expired_tokens"}, _job) do
-    CleanWorker.perform(:clean)
-  end
-
   def perform(%{"op" => "media_proxy_preload", "message" => message}, _job) do
     MediaProxyWarmingPolicy.perform(:preload, message)
   end
diff --git a/lib/pleroma/workers/cron/clear_oauth_token_worker.ex b/lib/pleroma/workers/cron/clear_oauth_token_worker.ex
new file mode 100644
index 000000000..a24407874
--- /dev/null
+++ b/lib/pleroma/workers/cron/clear_oauth_token_worker.ex
@@ -0,0 +1,21 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.Cron.ClearOauthTokenWorker do
+  @moduledoc """
+  The worker to cleanup expired oAuth tokens.
+  """
+
+  use Oban.Worker, queue: "background"
+
+  alias Pleroma.Config
+  alias Pleroma.Web.OAuth.Token
+
+  @impl Oban.Worker
+  def perform(_opts, _job) do
+    if Config.get([:oauth2, :clean_expired_tokens], false) do
+      Token.delete_expired_tokens()
+    end
+  end
+end
diff --git a/lib/pleroma/workers/cron/digest_emails_worker.ex b/lib/pleroma/workers/cron/digest_emails_worker.ex
new file mode 100644
index 000000000..0a00129df
--- /dev/null
+++ b/lib/pleroma/workers/cron/digest_emails_worker.ex
@@ -0,0 +1,58 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.Cron.DigestEmailsWorker do
+  @moduledoc """
+  The worker to send digest emails.
+  """
+
+  use Oban.Worker, queue: "digest_emails"
+
+  alias Pleroma.Config
+  alias Pleroma.Emails
+  alias Pleroma.Repo
+  alias Pleroma.User
+
+  import Ecto.Query
+
+  require Logger
+
+  @impl Oban.Worker
+  def perform(_opts, _job) do
+    config = Config.get([:email_notifications, :digest])
+
+    if config[:active] do
+      negative_interval = -Map.fetch!(config, :interval)
+      inactivity_threshold = Map.fetch!(config, :inactivity_threshold)
+      inactive_users_query = User.list_inactive_users_query(inactivity_threshold)
+
+      now = NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)
+
+      from(u in inactive_users_query,
+        where: fragment(~s(? ->'digest' @> 'true'), u.email_notifications),
+        where: u.last_digest_emailed_at < datetime_add(^now, ^negative_interval, "day"),
+        select: u
+      )
+      |> Repo.all()
+      |> send_emails
+    end
+  end
+
+  def send_emails(users) do
+    Enum.each(users, &send_email/1)
+  end
+
+  @doc """
+  Send digest email to the given user.
+  Updates `last_digest_emailed_at` field for the user and returns the updated user.
+  """
+  @spec send_email(User.t()) :: User.t()
+  def send_email(user) do
+    with %Swoosh.Email{} = email <- Emails.UserEmail.digest_email(user) do
+      Emails.Mailer.deliver_async(email)
+    end
+
+    User.touch_last_digest_emailed_at(user)
+  end
+end
diff --git a/lib/pleroma/workers/cron/purge_expired_activities_worker.ex b/lib/pleroma/workers/cron/purge_expired_activities_worker.ex
new file mode 100644
index 000000000..7a52860a9
--- /dev/null
+++ b/lib/pleroma/workers/cron/purge_expired_activities_worker.ex
@@ -0,0 +1,46 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.Cron.PurgeExpiredActivitiesWorker do
+  @moduledoc """
+  The worker to purge expired activities.
+  """
+
+  use Oban.Worker, queue: "activity_expiration"
+
+  alias Pleroma.Activity
+  alias Pleroma.ActivityExpiration
+  alias Pleroma.Config
+  alias Pleroma.User
+  alias Pleroma.Web.CommonAPI
+
+  require Logger
+
+  @interval :timer.minutes(1)
+
+  @impl Oban.Worker
+  def perform(_opts, _job) do
+    if Config.get([ActivityExpiration, :enabled]) do
+      Enum.each(ActivityExpiration.due_expirations(@interval), &delete_activity/1)
+    end
+  end
+
+  def delete_activity(%ActivityExpiration{activity_id: activity_id}) do
+    with {:activity, %Activity{} = activity} <-
+           {:activity, Activity.get_by_id_with_object(activity_id)},
+         {:user, %User{} = user} <- {:user, User.get_by_ap_id(activity.object.data["actor"])} do
+      CommonAPI.delete(activity.id, user)
+    else
+      {:activity, _} ->
+        Logger.error(
+          "#{__MODULE__} Couldn't delete expired activity: not found activity ##{activity_id}"
+        )
+
+      {:user, _} ->
+        Logger.error(
+          "#{__MODULE__} Couldn't delete expired activity: not found actorof ##{activity_id}"
+        )
+    end
+  end
+end
diff --git a/lib/pleroma/workers/cron/stats_worker.ex b/lib/pleroma/workers/cron/stats_worker.ex
new file mode 100644
index 000000000..425ad41ca
--- /dev/null
+++ b/lib/pleroma/workers/cron/stats_worker.ex
@@ -0,0 +1,16 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.Cron.StatsWorker do
+  @moduledoc """
+  The worker to update peers statistics.
+  """
+
+  use Oban.Worker, queue: "background"
+
+  @impl Oban.Worker
+  def perform(_opts, _job) do
+    Pleroma.Stats.do_collect()
+  end
+end
diff --git a/lib/pleroma/workers/digest_emails_worker.ex b/lib/pleroma/workers/digest_emails_worker.ex
deleted file mode 100644
index 3e5a836d0..000000000
--- a/lib/pleroma/workers/digest_emails_worker.ex
+++ /dev/null
@@ -1,16 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Workers.DigestEmailsWorker do
-  alias Pleroma.User
-
-  use Pleroma.Workers.WorkerHelper, queue: "digest_emails"
-
-  @impl Oban.Worker
-  def perform(%{"op" => "digest_email", "user_id" => user_id}, _job) do
-    user_id
-    |> User.get_cached_by_id()
-    |> Pleroma.Daemons.DigestEmailDaemon.perform()
-  end
-end
diff --git a/lib/pleroma/workers/scheduled_activity_worker.ex b/lib/pleroma/workers/scheduled_activity_worker.ex
index ca7d53af1..bd41ab4ce 100644
--- a/lib/pleroma/workers/scheduled_activity_worker.ex
+++ b/lib/pleroma/workers/scheduled_activity_worker.ex
@@ -3,10 +3,42 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Workers.ScheduledActivityWorker do
+  @moduledoc """
+  The worker to post scheduled activity.
+  """
+
   use Pleroma.Workers.WorkerHelper, queue: "scheduled_activities"
 
+  alias Pleroma.Config
+  alias Pleroma.ScheduledActivity
+  alias Pleroma.User
+  alias Pleroma.Web.CommonAPI
+
+  require Logger
+
   @impl Oban.Worker
-  def perform(%{"op" => "execute", "activity_id" => activity_id}, _job) do
-    Pleroma.Daemons.ScheduledActivityDaemon.perform(:execute, activity_id)
+  def perform(%{"activity_id" => activity_id}, _job) do
+    if Config.get([ScheduledActivity, :enabled]) do
+      case Pleroma.Repo.get(ScheduledActivity, activity_id) do
+        %ScheduledActivity{} = scheduled_activity ->
+          post_activity(scheduled_activity)
+
+        _ ->
+          Logger.error("#{__MODULE__} Couldn't find scheduled activity: #{activity_id}")
+      end
+    end
+  end
+
+  defp post_activity(%ScheduledActivity{user_id: user_id, params: params} = scheduled_activity) do
+    with {:delete, {:ok, _}} <- {:delete, ScheduledActivity.delete(scheduled_activity)},
+         {:user, %User{} = user} <- {:user, User.get_cached_by_id(user_id)},
+         {:post, {:ok, _}} <- {:post, CommonAPI.post(user, params)} do
+      :ok
+    else
+      error ->
+        Logger.error(
+          "#{__MODULE__} Couldn't create a status from the scheduled activity: #{inspect(error)}"
+        )
+    end
   end
 end