using System;
using AibisDream.Kit;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using Random = UnityEngine.Random;

namespace AibisDream.FixSystem
{
    /// <summary>
    /// 验证码系统
    /// 随机出现，非阻塞
    /// </summary>
    public class VerificationCodeSystem : MonoBehaviour
    {
        #region 必要组件

        [SerializeField] private Image background;
        [SerializeField] private Image target;
        [SerializeField] private Image slot;
        [SerializeField] private SliderEx slider;
        [SerializeField] private TMP_Text infoText;

        #endregion

        private float _normalizePosX;
        public event Action<bool> OnVerificationEnd;

        public void StartVerification()
        {
            infoText.text = "请将图片拖动至对应位置";
            gameObject.SetActive(true);
            _normalizePosX = Random.Range(0.4f, 0.9f);
            // 随机生成数据，包括Slot位置，有资源之后增加背景图
            var slotWidth = target.rectTransform.rect.width;
            var backgroundWidth = background.rectTransform.rect.width - target.rectTransform.rect.width;
            
            var slotPosX = _normalizePosX * backgroundWidth + slotWidth / 2;
            slot.rectTransform.anchoredPosition = new Vector2(slotPosX, slot.rectTransform.anchoredPosition.y);
            
            // 初始化
            target.rectTransform.anchoredPosition = new Vector2(slotWidth / 2, target.rectTransform.anchoredPosition.y);
            slider.value = 0;
            
            // 绑定事件
            slider.onEndDrag.AddListener(OnRelease);
            slider.onValueChanged.AddListener(OnValueChange);
        }

        private void OnRelease(float value)
        {
            var isSuccess = Mathf.Abs(value - _normalizePosX) < 0.03f;
            OnVerificationEnd?.Invoke(isSuccess);
            slider.onValueChanged.RemoveAllListeners();
            slider.onEndDrag.RemoveAllListeners();
            // 如果失败就再来一次
            if (!isSuccess)
            {
                infoText.text = "失败";
                ActionKit.Delay(1f, StartVerification).Start(this);
            }
            else
            {
                infoText.text = "成功";
                ActionKit.Delay(0.5f, () => gameObject.SetActive(false)).Start(this);
            }
        }

        private void OnValueChange(float value)
        {
            var slotWidth = target.rectTransform.rect.width;
            var backgroundWidth = background.rectTransform.rect.width - target.rectTransform.rect.width;
            
            var targetPosX = value * backgroundWidth + slotWidth / 2;
            target.rectTransform.anchoredPosition = new Vector2(targetPosX, target.rectTransform.anchoredPosition.y);
        }
    }
}