using System;
using System.Threading.Tasks;
using UnityEngine;

namespace Rokojori
{

// The UI-facing singleton and the only entry point for running a dialog.
// Can be called directly (menus, cutscenes, ...) or from a DialogPhase.
public class DialogManager : MonoBehaviour, IDialogDisplay
{
  public static DialogManager instance => Unique<DialogManager>.Get();

  public async Task StartDialog( DialogBlock start )
  {
    var processor = DialogProcessor.Create( this );
    await processor.Run( start );
  }

  // Called by DialogProcessor when a block needs to be shown. UI wiring
  // (text, portraits, choice buttons) isn't built yet - Assets/UI is still
  // empty - so this intentionally fails loudly instead of pretending to work.
  public Task<DialogAnswer> Show( DialogBlock block )
  {
    throw new NotImplementedException( "DialogManager UI wiring is not implemented yet." );
  }
}

}