using System;
using System.Diagnostics.CodeAnalysis;
using Umbraco.Core;
using Umbraco.Core.Services;

namespace Umbraco.Web.Models.Trees
{
    /// <inheritdoc />
    ///  <summary>
    ///  A menu item that represents some JS that needs to execute when the menu item is clicked.
    ///  </summary>
    ///  <remarks>
    ///  These types of menu items are rare but they do exist. Things like refresh node simply execute
    ///  JS and don't launch a dialog.
    ///  Each action menu item describes what angular service that it's method exists in and what the method name is.
    ///  An action menu item must describe the angular service name for which it's method exists. It may also define what the
    ///  method name is that will be called in this service but if one is not specified then we will assume the method name is the
    ///  same as the Type name of the current action menu class.
    ///  </remarks>
    public abstract class ActionMenuItem : MenuItem
    {
        /// <summary>
        /// The angular service name containing the <see cref="AngularServiceMethodName"/>
        /// </summary>
        public abstract string AngularServiceName { get; }

        /// <summary>
        /// The angular service method name to call for this menu item
        /// </summary>
        public virtual string AngularServiceMethodName { get; } = null;

        protected ActionMenuItem(string alias, string name) : base(alias, name)
        {
            Initialize();
        }

        protected ActionMenuItem(string alias, ILocalizedTextService textService) : base(alias, textService)
        {
            Initialize();
        }

        private void Initialize()
        {
            //add the current type to the metadata
            if (AngularServiceMethodName.IsNullOrWhiteSpace())
            {
                //if no method name is supplied we will assume that the menu action is the type name of the current menu class
                ExecuteJsMethod($"{AngularServiceName}.{this.GetType().Name}");
            }
            else
            {
                ExecuteJsMethod($"{AngularServiceName}.{AngularServiceMethodName}");
            }
        }
    }
}