using DG.Tweening;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using TMPro;
using UnityEngine;
using UnityEngine.UI;


/// <summary>
/// 提交面板
/// </summary>
public class UI_ReportUploadPanel : BasePanel
{
    public Button CloseBtn; //关闭按钮

    private CanvasGroup canvasGroup; //屏幕显示
    public GameObject ReportUpload_Image; //报告图片
    public TMP_InputField ReportUpload_Input; //实验报告输入框
    // Start is called before the first frame update
    protected override void Awake()
    {
        base.Awake();
        OnInit();
    }
    public void OnInit()
    {
        CloseBtn = GetControl<Button>("关闭按钮");
        canvasGroup = GetComponent<CanvasGroup>();
        canvasGroup.alpha = 0f; // 默认隐藏
        canvasGroup.interactable = false;
        canvasGroup.blocksRaycasts = false;
    }
    public override void ShowMe()
    {
        base.ShowMe();
        FadeIn(0.5f);

        if (ReportUpload_Image == null)
        {
            Debug.LogError("ReportUpload_Image组件未赋值！");
            return;
        }
        foreach (Toggle toggle in UI_ExperimentChooesPanel.instance?.SubjectTog)
        {
            if (toggle == null) continue;
            if (toggle.isOn)
            {
                string toggleName = toggle.name;
                string imagePath = string.Empty;
                switch (toggleName)
                {
                    case "5-1-1":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/比例1倍_511.png");
                        break;
                    case "5-1-2":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/比例1倍_522.png");
                        break;
                    case "5-2-1":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/1uf积分_521.png");
                        break;
                    case "5-2-2":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/1uf积分_522.png");
                        break;
                    case "5-3-1":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/比例积分0.1.png");
                        break;
                    case "5-3-2":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/比例积分1.png");
                        break;
                    case "5-4-1":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/比例微分1.png");
                        break;
                    case "5-4-2":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/比例微分2.png");
                        break;
                    case "5-5-1":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/惯性环节1.png");
                        break;
                    case "5-5-2":
                        imagePath = Path.Combine(Application.streamingAssetsPath, "实验报告图片/惯性环节2.png");
                        break;
                }
                Image ReportUploadImage = ReportUpload_Image.GetComponent<Image>();
                Sprite targetSprite = LoadSpriteFromStreamingAssets(imagePath, new Vector2(736, 414));
                if (targetSprite != null)
                {
                    ReportUploadImage.sprite = targetSprite;
                    // 固定Image尺寸为736×414
                    ReportUploadImage.rectTransform.sizeDelta = new Vector2(736, 414);
                    // 确保Image的显示模式为“填充”（避免自动缩放）
                    ReportUploadImage.type = Image.Type.Simple;
                    ReportUploadImage.preserveAspect = false;
                }

            }
        }
    }

    public override void HideMe()
    {
        base.HideMe();
        FadeOut(0.5f);
    }
    protected override void OnClick(string btnPath)
    {
        base.OnClick(btnPath);
        switch (btnPath)
        {
            case "关闭按钮":
                FadeOut(0.5f);
                break;
            case "提交Btn":
                StartCoroutine(ReportUploadManager.instance.ReportUpload());
                break;
        }
    }
    /// <summary>
    /// 提问渐显
    /// </summary>
    public void FadeIn(float time)
    {
        canvasGroup.DOFade(1f, time);
        canvasGroup.interactable = true;
        canvasGroup.blocksRaycasts = true;
    }

    /// <summary>
    /// 提问渐隐
    /// </summary>
    public void FadeOut(float time)
    {
        canvasGroup.DOFade(0f, time);
        canvasGroup.interactable = false;
        canvasGroup.blocksRaycasts = false;
    }
    /// <summary>
    /// 加载图片并裁剪/缩放为指定尺寸（保持比例）
    /// </summary>
    /// <param name="filePath">图片路径</param>
    /// <param name="targetSize">目标尺寸736×414</param>
    /// <returns>固定尺寸的Sprite</returns>
    private Sprite LoadSpriteFromStreamingAssets(string filePath, Vector2 targetSize)
    {
        if (!File.Exists(filePath))
        {
            Debug.LogError($"图片文件不存在：{filePath}");
            return null;
        }
        try
        {
            byte[] imageBytes = File.ReadAllBytes(filePath);
            Texture2D texture = new Texture2D(2, 2); // 初始尺寸任意，LoadImage会自动调整
            if (!texture.LoadImage(imageBytes)) // LoadImage支持PNG/JPG，自动识别格式
            {
                Debug.LogError($"加载图片失败：{filePath}，可能不是有效的PNG/JPG格式");
                Destroy(texture); // 释放无效Texture
                return null;
            }
            // 计算目标比例和原始比例
            float targetRatio = targetSize.x / targetSize.y; // 736/414 ≈ 1.7778（16:9）
            float originalRatio = (float)texture.width / texture.height;
            Rect cropRect;
            if (originalRatio > targetRatio)
            {
                // 原始图片更宽，裁剪左右两侧
                float cropWidth = texture.height * targetRatio;
                float startX = (texture.width - cropWidth) / 2;
                cropRect = new Rect(startX, 0, cropWidth, texture.height);
            }
            else
            {
                // 原始图片更高，裁剪上下两侧
                float cropHeight = texture.width / targetRatio;
                float startY = (texture.height - cropHeight) / 2;
                cropRect = new Rect(0, startY, texture.width, cropHeight);
            }

            // 创建固定尺寸的Sprite（居中裁剪）
            Sprite sprite = Sprite.Create(
                texture,
                cropRect, // 裁剪后的区域
                new Vector2(0.5f, 0.5f), // 中心锚点
                100, // PPI
                0,
                SpriteMeshType.Tight
            );

            return sprite;
        }
        catch (System.Exception e)
        {
            Debug.LogError($"读取图片异常：{e.Message}");
            return null;
        }
    }
}