Introduce group basic federation, event new page and notifications

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

lib/mobilizon/todos/todo.ex

@@ -0,0 +1,47 @@
+defmodule Mobilizon.Todos.Todo do
+  @moduledoc """
+  Represents a todo, or task
+  """
+
+  use Ecto.Schema
+  import Ecto.Changeset
+  import Mobilizon.Storage.Ecto, only: [ensure_url: 2]
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Todos.TodoList
+
+  @type t :: %__MODULE__{
+          status: boolean(),
+          title: String.t(),
+          due_date: DateTime.t(),
+          todo_list: TodoList.t(),
+          creator: Actor.t(),
+          assigned_to: Actor.t(),
+          local: boolean
+        }
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  schema "todos" do
+    field(:status, :boolean, default: false)
+    field(:title, :string)
+    field(:url, :string)
+    field(:due_date, :utc_datetime)
+    field(:local, :boolean, default: true)
+    belongs_to(:todo_list, TodoList, type: :binary_id)
+    belongs_to(:creator, Actor)
+    belongs_to(:assigned_to, Actor)
+
+    timestamps()
+  end
+
+  @required_attrs [:title, :creator_id, :url, :todo_list_id]
+  @optional_attrs [:status, :due_date, :assigned_to_id, :local]
+  @attrs @required_attrs ++ @optional_attrs
+
+  @doc false
+  def changeset(todo, attrs) do
+    todo
+    |> cast(attrs, @attrs)
+    |> ensure_url(:todo)
+    |> validate_required(@required_attrs)
+  end
+end