using System;
using AibisDream.Utility;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream
{
    public class LanguageItem : AbsFormItem
    {
        public override FieldType FieldType => FieldType.Select;

        #region 索引
        
        private TMP_Text _showText;
        private Button _leftBtn;
        private Button _rightBtn;
        
        #endregion

        #region 数据

        [Header("可选项")]
        public UIFormOption[] options;
        private int _curIdx;

        #endregion
        
        protected override void InitField()
        {
            var field = transform.Find("Field");
            _showText = field.Find("ShowText").GetComponent<TMP_Text>();
            _leftBtn = field.Find("Left Btn").GetComponent<Button>();
            _rightBtn = field.Find("Right Btn").GetComponent<Button>();
            
            _leftBtn.onClick.AddListener(LeftRoll);
            _rightBtn.onClick.AddListener(RightRoll);
        }

        public override void SetValue(string value)
        {
            var idx = Array.FindIndex(options, item => item.prop == value);
            if (idx < 0)
            {
                Debug.LogError($"{prop} setting value error");
            }

            _curIdx = idx;
            _showText.text = options[idx].label;
        }

        private void LeftRoll()
        {
            _curIdx = CommonUtil.LoopStep(_curIdx, 0, options.Length - 1);
            _showText.text = options[_curIdx].label;
            
            OnValueChanged?.Invoke(prop, options[_curIdx].prop);
        }

        private void RightRoll()
        {
            _curIdx = CommonUtil.LoopStep(_curIdx, 0, options.Length - 1, -1);
            _showText.text = options[_curIdx].label;
            
            OnValueChanged?.Invoke(prop, options[_curIdx].prop);
        }
    }
}