WIP

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

lib/mobilizon/conversations/conversation.ex

@@ -0,0 +1,57 @@
+defmodule Mobilizon.Conversations.Conversation do
+  @moduledoc """
+  Represents a conversation
+  """
+
+  use Ecto.Schema
+
+  import Ecto.Changeset
+
+  alias Ecto.Changeset
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Conversations.ConversationParticipant
+  alias Mobilizon.Discussions.Comment
+  alias Mobilizon.Events.Event
+
+  @type t :: %__MODULE__{
+          id: String.t(),
+          origin_comment: Comment.t(),
+          last_comment: Comment.t(),
+          participants: list(Actor.t())
+        }
+
+  @required_attrs [:origin_comment_id, :last_comment_id]
+  @optional_attrs [:event_id]
+  @attrs @required_attrs ++ @optional_attrs
+
+  schema "conversations" do
+    belongs_to(:origin_comment, Comment)
+    belongs_to(:last_comment, Comment)
+    belongs_to(:event, Event)
+    has_many(:comments, Comment)
+
+    many_to_many(:participants, Actor,
+      join_through: ConversationParticipant,
+      join_keys: [conversation_id: :id, actor_id: :id],
+      on_replace: :delete
+    )
+
+    timestamps(type: :utc_datetime)
+  end
+
+  @doc false
+  @spec changeset(t | Ecto.Schema.t(), map) :: Ecto.Changeset.t()
+  def changeset(%__MODULE__{} = conversation, attrs) do
+    conversation
+    |> cast(attrs, @attrs)
+    |> maybe_set_participants(attrs)
+    |> validate_required(@required_attrs)
+  end
+
+  defp maybe_set_participants(%Changeset{} = changeset, %{participants: participants})
+       when length(participants) > 0 do
+    put_assoc(changeset, :participants, participants)
+  end
+
+  defp maybe_set_participants(%Changeset{} = changeset, _), do: changeset
+end