using UnityEngine;
using UnityEngine.UI;

namespace AdaptUI
{
    [System.Serializable]
    public struct FontSizeData
    {
        public int fontSize;

        public FontSizeData(int size)
        {
            fontSize = size;
        }

        public bool IsValid() => fontSize > 0;
    }

    [ExecuteAlways]
    [RequireComponent(typeof(Text))]
    public class UIFontSizeAdapter : MonoBehaviour
    {
        [Header("默认字体大小")]
        public FontSizeData defaultFontSize;

        [Header("iPhone 字体大小")]
        public FontSizeData iPhoneFontSize;

        [Header("iPad 字体大小")]
        public FontSizeData iPadFontSize;

        private Text text;
        private bool isInitialized = false;

        private void Awake()
        {
            text = GetComponent<Text>();
            // if (!isInitialized) return;
#if UNITY_EDITOR
            if (!isInitialized)
            {
                //   Debug.Log("UICanvasScalerAdaptive: 未初始化，跳过 ApplyScaler()");
                if (Application.isPlaying)
                    ApplyFontSize();
                return;
            }
#endif

            ApplyFontSize();
        }

#if UNITY_EDITOR
        private void Reset()
        {
            text = GetComponent<Text>();
            if (!isInitialized && text != null)
            {
                defaultFontSize = new FontSizeData(text.fontSize);
                iPhoneFontSize = new FontSizeData(text.fontSize);
                iPadFontSize = new FontSizeData(text.fontSize);
                isInitialized = true;
                Debug.Log("UIFontSizeAdapter: 初始化默认字体大小为 " + text.fontSize);
            }
        }
#endif

        public void ApplyFontSize()
        {
            if (text == null) return;

            var type = DeviceTypeHelper.DetectDeviceType();
            int size = defaultFontSize.fontSize;

            switch (type)
            {
                case DeviceTypeHelper.DeviceType.iPhone:
                    size = iPhoneFontSize.fontSize;
                    break;
                case DeviceTypeHelper.DeviceType.iPad:
                    size = iPadFontSize.fontSize;
                    break;
            }

            text.fontSize = size;
            Debug.Log($"📌 应用字体大小: {size} (设备: {type})");
        }

        public void SetFontSize(bool isIpad, int size)
        {
            if (isIpad)
                iPadFontSize = new FontSizeData(size);
            else
                iPhoneFontSize = new FontSizeData(size);
        }

        public FontSizeData GetFontSize(bool isIpad)
        {
            return isIpad ? iPadFontSize : iPhoneFontSize;
        }
    }
}