// ReSharper disable once CheckNamespace
namespace GodotStateCharts
{
    using System;
    using Godot;
    
    /// <summary>
    /// Wrapper around the compound state node.
    /// </summary>
    public class CompoundState : State
    {

        private CompoundState(Node wrapped) : base(wrapped)
        {
        }

        /// <summary>
        /// Creates a wrapper object around the given node and verifies that the node
        /// is actually a compound state. The wrapper object can then be used to interact
        /// with the compound state chart from C#.
        /// </summary>
        /// <param name="state">the node that is the state</param>
        /// <returns>a State wrapper.</returns>
        /// <throws>ArgumentException if the node is not a state.</throws>
        public new static CompoundState Of(Node state)
        {
            if (state.GetScript().As<Script>() is not GDScript gdScript ||
                !gdScript.ResourcePath.EndsWith("compound_state.gd"))
            {
                throw new ArgumentException("Given node is not a compound state.");
            }

            return new CompoundState(state);
        }

        public new class SignalName : State.SignalName
        {
            /// <summary>
            /// Called when a child state is entered.
            /// </summary>
            public static readonly StringName ChildStateEntered = "child_state_entered";

            /// <summary>
            /// Called when a child state is exited.
            /// </summary>
            public static readonly StringName ChildStateExited = "child_state_exited";

        }
    }
}