using System;
using UnityEngine;

namespace AlicizaX.UI
{
    /// <summary>
    /// Base class for all controller states
    /// </summary>
    public abstract class ControllerStateBase
    {
        /// <summary>
        /// Initialize the state when added to a recorder
        /// </summary>
        public abstract void Init(UXControllerStateRecorder recorder);

        /// <summary>
        /// Execute the state when controller index changes
        /// </summary>
        /// <param name="recorder">The state recorder</param>
        /// <param name="entryIndex">The index this state entry is bound to</param>
        /// <param name="selectedIndex">The currently selected controller index</param>
        public abstract void Execute(UXControllerStateRecorder recorder, int entryIndex, int selectedIndex);

        /// <summary>
        /// Validate if the state can be properly executed
        /// </summary>
        public abstract bool Valid(UXControllerStateRecorder recorder);

        /// <summary>
        /// Get a human-readable description of this state
        /// </summary>
        public virtual string GetDescription()
        {
            return GetType().Name;
        }
    }

    /// <summary>
    /// Attribute to define display name for a controller state type
    /// </summary>
    [AttributeUsage(AttributeTargets.Class)]
    public class ControlerStateNameAttribute : Attribute
    {
        public string StateName { get; }

        public ControlerStateNameAttribute(string stateName)
        {
            StateName = stateName;
        }
    }

    /// <summary>
    /// Attribute to define if a state can be attached multiple times to the same recorder
    /// </summary>
    [AttributeUsage(AttributeTargets.Class)]
    public class ControlerStateAttachTypeAttribute : Attribute
    {
        public bool Repeat { get; }

        public ControlerStateAttachTypeAttribute(bool repeat)
        {
            Repeat = repeat;
        }
    }
}