using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace SpriteShadersUltimate.Demo
{
    public class Demo_Trigger : MonoBehaviour
    {
        public List<Demo_TriggerEvent> events;
        private ShaderFaderSSU fader;

        private void Start()
        {
            fader = GetComponent<ShaderFaderSSU>();
        }

        private void OnTriggerEnter2D(Collider2D collision)
        {
            if (collision.name == "Player") ChangeState(true);
        }

        private void OnTriggerExit2D(Collider2D collision)
        {
            if (collision.name == "Player") ChangeState(false);
        }

        public void ChangeState(bool isActive)
        {
            if (fader != null) fader.isFaded = isActive;

            if (events != null && isActive)
                foreach (var demoEvent in events)
                    StartCoroutine(PlayEvent(demoEvent));
        }

        private IEnumerator PlayEvent(Demo_TriggerEvent demoEvent)
        {
            yield return new WaitForSeconds(demoEvent.delay);
            demoEvent.Play(transform);
        }
    }

    [Serializable]
    public class Demo_TriggerEvent
    {
        [Header("Delay:")] public float delay;

        [Header("Change Fader:")] public ShaderFaderSSU fader;

        public bool faderState;
        public bool negateState;

        [Header("Snap Player:")] public bool snapPlayer;

        public bool isRelative;
        public Vector3 snapPosition;

        [Header("Hurt Player:")] public bool hurtPlayer;

        public Vector2 velocity;

        public void Play(Transform source)
        {
            if (fader != null)
            {
                if (negateState)
                    fader.isFaded = !fader.isFaded;
                else
                    fader.isFaded = faderState;
            }

            if (snapPlayer)
                Demo_Player.instance.SnapPosition(isRelative ? source.position + snapPosition : snapPosition);

            if (hurtPlayer) Demo_Player.instance.GetHurt(velocity);
        }
    }
}