defmodule TribeOne.TribesPlugin.Aether.Chat.Backends.PublicSync do
  @moduledoc """
  Plaintext Ash-backed chat backend for public and local DM-style conversations.
  """

  @behaviour TribeOne.TribesPlugin.Aether.Chat.Backend

  alias TribeOne.TribesPlugin.Aether.Chat
  alias TribeOne.TribesPlugin.Aether.Chat.Channel

  @impl true
  def capabilities do
    %{
      canonical_store: :ash,
      nostr_compatible?: false,
      non_custodial_signing?: false,
      conversation_kinds: [:group, :context_group, :dm],
      read_only?: false
    }
  end

  @impl true
  def ensure_conversation(attrs, opts) when is_map(attrs), do: Chat.ensure_channel(attrs, opts)

  @impl true
  def list_messages(%Channel{} = channel, opts), do: Chat.list_messages(channel, opts)

  @impl true
  def send_message(%Channel{} = channel, attrs, opts) when is_map(attrs) do
    Chat.post_message(channel, attrs, opts)
  end

  @impl true
  def subscribe(%Channel{} = channel, _pid, _opts), do: Chat.subscribe_channel(channel)
end