[MastodonAPI] Add filters

lib/pleroma/filter.ex

@@ -0,0 +1,62 @@
+defmodule Pleroma.Filter do
+  use Ecto.Schema
+  import Ecto.{Changeset, Query}
+  alias Pleroma.{User, Repo, Activity}
+
+  schema "filters" do
+    belongs_to(:user, Pleroma.User)
+    field(:filter_id, :integer)
+    field(:hide, :boolean, default: false)
+    field(:whole_word, :boolean, default: true)
+    field(:phrase, :string)
+    field(:context, {:array, :string})
+    field(:expires_at, :utc_datetime)
+
+    timestamps()
+  end
+
+  def get(id, %{id: user_id} = _user) do
+    query =
+      from(
+        f in Pleroma.Filter,
+        where: f.filter_id == ^id,
+        where: f.user_id == ^user_id
+      )
+
+    Repo.one(query)
+  end
+
+  def get_filters(%Pleroma.User{id: user_id} = user) do
+    query =
+      from(
+        f in Pleroma.Filter,
+        where: f.user_id == ^user_id
+      )
+
+    Repo.all(query)
+  end
+
+  def create(%Pleroma.Filter{} = filter) do
+    Repo.insert(filter)
+  end
+
+  def delete(%Pleroma.Filter{id: filter_key} = filter) when is_number(filter_key) do
+    Repo.delete(filter)
+  end
+
+  def delete(%Pleroma.Filter{id: filter_key} = filter) when is_nil(filter_key) do
+    %Pleroma.Filter{id: id} = get(filter.filter_id, %{id: filter.user_id})
+
+    filter
+    |> Map.put(:id, id)
+    |> Repo.delete()
+  end
+
+  def update(%Pleroma.Filter{} = filter) do
+    destination = Map.from_struct(filter)
+
+    Pleroma.Filter.get(filter.filter_id, %{id: filter.user_id})
+    |> cast(destination, [:phrase, :context, :hide, :expires_at, :whole_word])
+    |> Repo.update()
+  end
+end