using Shogi.Contracts.Api;
using Shogi.UI.Pages.Home.Api;

namespace Shogi.UI.Pages.Home;

public class PromotePrompt
{
  private readonly IShogiApi shogiApi;
  private string? sessionName;
  private MovePieceCommand? command;

  public PromotePrompt(IShogiApi shogiApi)
  {
    this.shogiApi = shogiApi;
    IsVisible = false;
    OnClickCancel = Hide;
  }

  public bool IsVisible { get; private set; }
  public Action OnClickCancel;
  public Func<Task>? OnClickNo;
  public Func<Task>? OnClickYes;

  public void Show(string sessionName, MovePieceCommand command)
  {
    this.sessionName = sessionName;
    this.command = command;
    IsVisible = true;
    OnClickNo = Move;
    OnClickYes = MoveAndPromote;
  }

  public void Hide()
  {
    IsVisible = false;
    OnClickNo = null;
    OnClickYes = null;
  }

  private Task Move()
  {
    if (command != null && sessionName != null)
    {
      command.IsPromotion = false;
      return shogiApi.PostMove(sessionName, command);
    }
    return Task.CompletedTask;
  }
  private Task MoveAndPromote()
  {
    if (command != null && sessionName != null)
    {
      command.IsPromotion = true;
      return shogiApi.PostMove(sessionName, command);
    }
    return Task.CompletedTask;
  }
}