using System;
using Syntriax.Modules.Movement.Config;
using UnityEngine;

namespace Syntriax.Modules.Movement
{
    public class MovementDefinitionApplier : MonoBehaviour
    {
        [Tooltip("The definition's name as defined in it's \"Name\" field")]
        [SerializeField] private string startupDefinitionName = "";

        private string appliedDefinitionName = "";
        public Action<GameObject> OnMovementDefinitionApplied = null;
        public Action<GameObject> OnMovementDefinitionRemoved = null;

        private void Awake()
        {
            if (string.IsNullOrWhiteSpace(startupDefinitionName))
                return;

            LoadDefinition(startupDefinitionName);
        }

        public void LoadDefinition(string definitionName)
        {
            RemoveDefinition();

            MovementDefinitionFactory.Instance.ApplyDefinitionToGameObject(gameObject, definitionName);
            appliedDefinitionName = definitionName;
            OnMovementDefinitionApplied?.Invoke(gameObject);
        }

        public void LoadDefinition(MovementDefinition definition)
        {
            RemoveDefinition();

            MovementDefinitionFactory.Instance.ApplyDefinitionToGameObject(gameObject, definition);
            appliedDefinitionName = definition.Name;
            OnMovementDefinitionApplied?.Invoke(gameObject);
        }

        public void RemoveDefinition()
        {
            if (string.IsNullOrWhiteSpace(appliedDefinitionName))
                return;

            MovementDefinition appliedDefinition = MovementDefinitionFactory.Instance.Definitions[appliedDefinitionName];
            if (appliedDefinition.MovementConfigs == null || appliedDefinition.MonoBehaviours == null)
                return;

            foreach (MovementConfig movementConfig in appliedDefinition.MovementConfigs)
            {
                Type type = MovementFactory.Instance.Types[movementConfig.TypeName];
                if (TryGetComponent(type, out Component component))
                    Destroy(component);
            }

            foreach (string monoBehaviour in appliedDefinition.MonoBehaviours)
            {
                Type type = MovementFactory.Instance.Types[monoBehaviour];
                if (TryGetComponent(type, out Component component))
                    Destroy(component);
            }

            appliedDefinition = default;
            OnMovementDefinitionRemoved?.Invoke(gameObject);
        }

        [ContextMenu("Load Longer")] private void LoadLonger() => LoadDefinition("Example Movement Definition (Longer)");
        [ContextMenu("Load Quick")] private void LoadQuick() => LoadDefinition("Example Movement Definition (Quick)");
        [ContextMenu("Remove Definition")] private void UnloadDefinition() => RemoveDefinition();
    }
}