using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine.UI;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Formats.Jpeg;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.Processing;

namespace HK.FUJIFILM
{
    public class DoubleCaptureSystem : TransparentCaptureSystem<DoubleCaptureSystem>
    {
        /// <summary>
        /// 执行两次截图并裁剪，支持分别定制参数
        /// </summary>
        /// <param name="onBothComplete">两次都完成后的回调（返回两次的字节数组）</param>
        public void CaptureTwice(Action<byte[], byte[]> onBothComplete)
        {
            StartCoroutine(CoCaptureTwice(onBothComplete));
        }

        /// <summary>
        /// 一开多
        /// </summary>
        /// <param name="onBothComplete"></param>
        public void CaptureTwice_ManyToMany(Action<List<byte[]>, List<byte[]>> onBothComplete)
        {
            StartCoroutine(CoCaptureTwice_ManyToMany(onBothComplete));
        }

        public void CaptureTwice_OneToMany(Action<byte[], List<byte[]>> onBothComplete)
        {
            StartCoroutine(CoCaptureTwice_OneToMany(onBothComplete));
        }

        public void CaptureOnlyDesign(Action<byte[],string> onBothComplete)
        {
            StartCoroutine(CoCaptureOnlyDesign(onBothComplete));
        }

#if UNITY_EDITOR
        [ContextMenu("CaptureTwice")]
        public void Test()
        {
            StartCoroutine(CoCaptureTwice(null));
        }
#endif

        float ConvertMmToPixel(float mm, int dpi = 300)
        {
            return mm * (dpi / 25.4f);
        }

        // private void Update()
        // {
        //     if (Input.GetKeyDown(KeyCode.J))
        //     {
        //         UnityEngine.Debug.LogError($"px is {ConvertMmToPixel(85.6f)}");
        //     }
        // }

        // 协程：顺序执行两次截图
        private IEnumerator CoCaptureTwice(Action<byte[], byte[]> onBothComplete)
        {
            // 存储两次截图的结果
            byte[] firstResult = null;
            byte[] secondResult = null;

            var tmpSaveFolder = saveFolder;
            saveFolder = Path.Combine(saveFolder, DateTime.Now.ToString("yyyyMMdd_HHmmss"));
            onlyFileName = "PreviewImage1";

            var mugActualModelRenderFixed = uiRoot.GetComponent<MugActualModelRender_Fixed>();
            var image = mugActualModelRenderFixed.designParent.GetChild(0).GetComponent<UnityEngine.UI.Image>();
            image.enabled = true;

            // 第一次截图（使用基类默认参数）
            Debug.Log("开始第一次截图...");
            yield return StartCoroutine(CaptureAndCrop((firstBytes) =>
            {
                firstResult = firstBytes;
                Debug.Log("第一次截图完成");
            }));
            image.enabled = false;

            // 确保第一次完成后再执行第二次
            if (firstResult == null)
            {
                Debug.LogError("第一次截图失败，取消第二次");
                onBothComplete?.Invoke(null, null);
                yield break;
            }

            bool tmpImageActive = image.enabled;
            image.enabled = mugActualModelRenderFixed.productScriptableObject.isShowTemplate;

            var verticalLayoutGroup = mugActualModelRenderFixed.designParent.GetComponent<VerticalLayoutGroup>();
            verticalLayoutGroup.enabled = true;

            var tmpWidth = cropWidth;
            var tmpHeight = cropHeight;
            var productScriptableObject = mugActualModelRenderFixed.productScriptableObject;
            var screenshotSize = productScriptableObject.screenshotSize;
            cropWidth = (int)screenshotSize.x;
            cropHeight = (int)screenshotSize.y;
            cropOffset = new Vector2(0.5f, 0.5f);
            onlyFileName = "DesignImage1";

            // 第二次截图（使用修改后的参数）
            Debug.Log("开始第二次截图...");
            yield return StartCoroutine(CaptureAndCrop((secondBytes) =>
            {
                secondResult = secondBytes;
                Debug.Log("第二次截图完成");
            }));
            image.enabled = tmpImageActive;

            // 1. 校验文件是否存在
            var fileInfo = new FileInfo(fullPath);
            if (!fileInfo.Exists)
            {
                Debug.LogError($"原始图片不存在：{fullPath}");
                secondResult = null;
                yield break; // 若在协程中，用 yield break 退出
            }

            try
            {
                // 2. 加载图像并校验原始尺寸
                using (var sImage = SixLabors.ImageSharp.Image.Load(fileInfo.FullName))
                {
                    // 校验原始图片尺寸是否有效
                    if (sImage.Width <= 0 || sImage.Height <= 0)
                    {
                        Debug.LogError($"加载的图片尺寸无效：宽={sImage.Width}, 高={sImage.Height}");
                        secondResult = null;
                        yield break;
                    }

                    if (productScriptableObject.printingSize.x != 0)
                    {
                        // 3. 校验缩放宽度是否有效
                        int targetWidth = (int)ConvertMmToPixel(productScriptableObject.printingSize.x);
                        int targetHeight = (int)ConvertMmToPixel(productScriptableObject.printingSize.y);
                        if (targetWidth <= 0)
                        {
                            Debug.LogError($"缩放宽度无效（必须大于 0）：{targetWidth}");
                            // 可选：使用默认宽度（如 200）避免错误
                            targetWidth = 200;
                        }

                        // 4. 等比缩放（确保目标尺寸有效）
                        // sImage.Mutate(x => x.Resize(new ResizeOptions
                        // {
                        //     Size = new Size(targetWidth, targetHeight), // 高度为0则自动计算
                        //     Mode = ResizeMode.Max,
                        //     Sampler = KnownResamplers.Lanczos3 // 高质量缩放算法
                        // }));
                        // 强制缩放
                        sImage.Mutate(x => x.Resize(targetWidth, targetHeight));
                    }

                    // 5. 确保保存目录存在
                    if (!Directory.Exists(saveFolder))
                    {
                        Directory.CreateDirectory(saveFolder); // 自动创建目录
                    }

                    // 6. 保存缩放后的图片
                    var filePath = Path.Combine(saveFolder, "Printing1.png");
                    sImage.SaveAsPng(filePath, new PngEncoder());

                    // 7. 校验保存结果并读取字节数组
                    if (File.Exists(filePath))
                    {
                        secondResult = File.ReadAllBytes(filePath);
                        Debug.Log($"第二次截图缩放后保存至：{filePath}");
                    }
                    else
                    {
                        Debug.LogError($"图片保存失败，文件不存在：{filePath}");
                        secondResult = null;
                    }
                }
            }
            catch (Exception ex)
            {
                // 捕获所有异常（如图片格式错误、权限问题等）
                Debug.LogError($"图片处理失败：{ex.Message}\n{ex.StackTrace}");
                secondResult = null;
            }

            // 恢复原始参数（避免影响后续截图）
            verticalLayoutGroup.enabled = false;
            cropWidth = tmpWidth;
            cropHeight = tmpHeight;
            cropOffset = new Vector2(0f, 0f);
            image.enabled = false;
            saveFolder = tmpSaveFolder;

            // 触发最终回调
            onBothComplete?.Invoke(firstResult, secondResult);
        }

        private IEnumerator CoCaptureTwice_OneToMany(Action<byte[], List<byte[]>> onBothComplete)
        {
            byte[] firstResult = null;
            List<byte[]> secondResults = new List<byte[]>();

            var tmpSaveFolder = saveFolder;
            var mugActualModelRenderFixed = uiRoot.GetComponent<MugActualModelRender_Fixed>();
            saveFolder = Path.Combine(saveFolder, DateTime.Now.ToString("yyyyMMdd_HHmmss"));
            var designParent = mugActualModelRenderFixed.designParent.GetChild(0);

            onlyFileName = $"PreviewImage";
            var tmpImageEnabled = false;
            for (var i = 0; i < designParent.childCount; i++)
            {
                var image = designParent.GetChild(i).GetComponent<UnityEngine.UI.Image>();
                tmpImageEnabled = image.enabled;
                image.enabled = mugActualModelRenderFixed.productScriptableObject.isShowBaseMap;
            }

            // 第一次截图（使用基类默认参数）
            Debug.Log("开始第一次截图...");
            yield return StartCoroutine(CaptureAndCrop((firstBytes) =>
            {
                firstResult = firstBytes;
                Debug.Log("第一次截图完成");
            }));

            for (var i = 0; i < designParent.childCount; i++)
            {
                var image = designParent.GetChild(i).GetComponent<UnityEngine.UI.Image>();
                image.enabled = tmpImageEnabled;
            }

            // 确保第一次完成后再执行第二次
            if (firstResult == null)
            {
                Debug.LogError("第一次截图失败，取消第二次");
                onBothComplete?.Invoke(null, null);
                yield break;
            }

            for (var i = 0; i < designParent.childCount; i++)
            {
                // 存储两次截图的结果
                byte[] secondResult = null;

                for (var j = 0; j < designParent.childCount; j++)
                {
                    designParent.GetChild(j).gameObject.SetActive(false);
                }

                designParent.GetChild(i).gameObject.SetActive(true);

                var verticalLayoutGroup = designParent.GetComponent<LayoutGroup>();
                if (verticalLayoutGroup != null)
                    verticalLayoutGroup.enabled = true;

                var tmpWidth = cropWidth;
                var tmpHeight = cropHeight;
                var productScriptableObject = mugActualModelRenderFixed.productScriptableObject;
                var screenshotSize = productScriptableObject.screenshotSize;
                cropWidth = (int)screenshotSize.x;
                cropHeight = (int)screenshotSize.y;
                cropOffset = new Vector2(0.5f, 0.5f);
                onlyFileName = $"DesignImage{i}";

                // 第二次截图（使用修改后的参数）
                Debug.Log("开始第二次截图...");
                yield return StartCoroutine(CaptureAndCrop((secondBytes) =>
                {
                    secondResult = secondBytes;
                    Debug.Log("第二次截图完成");
                }));
                // image.enabled = tmpImageActive;

                // 1. 校验文件是否存在
                var fileInfo = new FileInfo(fullPath);
                if (!fileInfo.Exists)
                {
                    Debug.LogError($"原始图片不存在：{fullPath}");
                    secondResult = null;
                    yield break; // 若在协程中，用 yield break 退出
                }

                try
                {
                    // 2. 加载图像并校验原始尺寸
                    using (var sImage = SixLabors.ImageSharp.Image.Load(fileInfo.FullName))
                    {
                        // 校验原始图片尺寸是否有效
                        if (sImage.Width <= 0 || sImage.Height <= 0)
                        {
                            Debug.LogError($"加载的图片尺寸无效：宽={sImage.Width}, 高={sImage.Height}");
                            secondResult = null;
                            yield break;
                        }

                        if (productScriptableObject.printingSize.x != 0)
                        {
                            // 3. 校验缩放宽度是否有效
                            int targetWidth = (int)ConvertMmToPixel(productScriptableObject.printingSize.x);
                            int targetHeight = (int)ConvertMmToPixel(productScriptableObject.printingSize.y);
                            if (targetWidth <= 0)
                            {
                                Debug.LogError($"缩放宽度无效（必须大于 0）：{targetWidth}");
                                // 可选：使用默认宽度（如 200）避免错误
                                targetWidth = 200;
                            }

                            // 4. 等比缩放（确保目标尺寸有效）
                            // sImage.Mutate(x => x.Resize(new ResizeOptions
                            // {
                            //     Size = new Size(targetWidth, targetHeight), // 高度为0则自动计算
                            //     Mode = ResizeMode.Max,
                            //     Sampler = KnownResamplers.Lanczos3 // 高质量缩放算法
                            // }));
                            // 强制缩放
                            sImage.Mutate(x => x.Resize(targetWidth, targetHeight));
                        }

                        // 5. 确保保存目录存在
                        if (!Directory.Exists(saveFolder))
                        {
                            Directory.CreateDirectory(saveFolder); // 自动创建目录
                        }

                        // 6. 保存缩放后的图片
                        var filePath = Path.Combine(saveFolder, $"Printing{i}.png");
                        sImage.SaveAsPng(filePath, new PngEncoder());

                        // 7. 校验保存结果并读取字节数组
                        if (File.Exists(filePath))
                        {
                            secondResult = File.ReadAllBytes(filePath);
                            Debug.Log($"第二次截图缩放后保存至：{filePath}");
                        }
                        else
                        {
                            Debug.LogError($"图片保存失败，文件不存在：{filePath}");
                            secondResult = null;
                        }
                    }
                }
                catch (Exception ex)
                {
                    // 捕获所有异常（如图片格式错误、权限问题等）
                    Debug.LogError($"图片处理失败：{ex.Message}\n{ex.StackTrace}");
                    secondResult = null;
                }

                // 恢复原始参数（避免影响后续截图）
                if (verticalLayoutGroup != null)
                    verticalLayoutGroup.enabled = false;
                cropWidth = tmpWidth;
                cropHeight = tmpHeight;
                cropOffset = new Vector2(0f, 0f);
                // image.enabled = false;

                secondResults.Add(secondResult);
            }

            for (var j = 0; j < designParent.childCount; j++)
            {
                designParent.GetChild(j).gameObject.SetActive(true);
            }

            saveFolder = tmpSaveFolder;
            // 触发最终回调
            onBothComplete?.Invoke(firstResult, secondResults);
        }

        private IEnumerator CoCaptureTwice_ManyToMany(Action<List<byte[]>, List<byte[]>> onBothComplete)
        {
            List<byte[]> firstResults = new List<byte[]>();
            List<byte[]> secondResults = new List<byte[]>();

            var tmpSaveFolder = saveFolder;
            var mugActualModelRenderFixed = uiRoot.GetComponent<MugActualModelRender_Fixed>();
            saveFolder = Path.Combine(saveFolder, DateTime.Now.ToString("yyyyMMdd_HHmmss"));
            var designParent = mugActualModelRenderFixed.designParent.GetChild(0);

            for (var i = 0; i < designParent.childCount; i++)
            {
                // 存储两次截图的结果
                byte[] firstResult = null;
                byte[] secondResult = null;

                onlyFileName = $"PreviewImage{i}";

                var image = designParent.GetChild(i).GetComponent<UnityEngine.UI.Image>();
                image.enabled = true;

                // 第一次截图（使用基类默认参数）
                Debug.Log("开始第一次截图...");
                yield return StartCoroutine(CaptureAndCrop((firstBytes) =>
                {
                    firstResult = firstBytes;
                    Debug.Log("第一次截图完成");
                }));
                image.enabled = false;

                // 确保第一次完成后再执行第二次
                if (firstResult == null)
                {
                    Debug.LogError("第一次截图失败，取消第二次");
                    onBothComplete?.Invoke(null, null);
                    yield break;
                }

                bool tmpImageActive = image.enabled;
                image.enabled = mugActualModelRenderFixed.productScriptableObject.isShowTemplate;

                var verticalLayoutGroup = designParent.GetComponent<VerticalLayoutGroup>();
                verticalLayoutGroup.enabled = true;

                var tmpWidth = cropWidth;
                var tmpHeight = cropHeight;
                var productScriptableObject = mugActualModelRenderFixed.productScriptableObject;
                var screenshotSize = productScriptableObject.screenshotSize;
                cropWidth = (int)screenshotSize.x;
                cropHeight = (int)screenshotSize.y;
                cropOffset = new Vector2(0.5f, 0.5f);
                onlyFileName = $"DesignImage{i}";

                // 第二次截图（使用修改后的参数）
                Debug.Log("开始第二次截图...");
                yield return StartCoroutine(CaptureAndCrop((secondBytes) =>
                {
                    secondResult = secondBytes;
                    Debug.Log("第二次截图完成");
                }));
                image.enabled = tmpImageActive;

                // 1. 校验文件是否存在
                var fileInfo = new FileInfo(fullPath);
                if (!fileInfo.Exists)
                {
                    Debug.LogError($"原始图片不存在：{fullPath}");
                    secondResult = null;
                    yield break; // 若在协程中，用 yield break 退出
                }

                try
                {
                    // 2. 加载图像并校验原始尺寸
                    using (var sImage = SixLabors.ImageSharp.Image.Load(fileInfo.FullName))
                    {
                        // 校验原始图片尺寸是否有效
                        if (sImage.Width <= 0 || sImage.Height <= 0)
                        {
                            Debug.LogError($"加载的图片尺寸无效：宽={sImage.Width}, 高={sImage.Height}");
                            secondResult = null;
                            yield break;
                        }

                        if (productScriptableObject.printingSize.x != 0)
                        {
                            // 3. 校验缩放宽度是否有效
                            int targetWidth = (int)ConvertMmToPixel(productScriptableObject.printingSize.x);
                            int targetHeight = (int)ConvertMmToPixel(productScriptableObject.printingSize.y);
                            if (targetWidth <= 0)
                            {
                                Debug.LogError($"缩放宽度无效（必须大于 0）：{targetWidth}");
                                // 可选：使用默认宽度（如 200）避免错误
                                targetWidth = 200;
                            }

                            // 4. 等比缩放（确保目标尺寸有效）
                            // sImage.Mutate(x => x.Resize(new ResizeOptions
                            // {
                            //     Size = new Size(targetWidth, targetHeight), // 高度为0则自动计算
                            //     Mode = ResizeMode.Max,
                            //     Sampler = KnownResamplers.Lanczos3 // 高质量缩放算法
                            // }));
                            // 强制缩放
                            sImage.Mutate(x => x.Resize(targetWidth, targetHeight));
                        }

                        // 5. 确保保存目录存在
                        if (!Directory.Exists(saveFolder))
                        {
                            Directory.CreateDirectory(saveFolder); // 自动创建目录
                        }

                        // 6. 保存缩放后的图片
                        var filePath = Path.Combine(saveFolder, $"Printing{i}.png");
                        sImage.SaveAsPng(filePath, new PngEncoder());

                        // 7. 校验保存结果并读取字节数组
                        if (File.Exists(filePath))
                        {
                            secondResult = File.ReadAllBytes(filePath);
                            Debug.Log($"第二次截图缩放后保存至：{filePath}");
                        }
                        else
                        {
                            Debug.LogError($"图片保存失败，文件不存在：{filePath}");
                            secondResult = null;
                        }
                    }
                }
                catch (Exception ex)
                {
                    // 捕获所有异常（如图片格式错误、权限问题等）
                    Debug.LogError($"图片处理失败：{ex.Message}\n{ex.StackTrace}");
                    secondResult = null;
                }

                // 恢复原始参数（避免影响后续截图）
                verticalLayoutGroup.enabled = false;
                cropWidth = tmpWidth;
                cropHeight = tmpHeight;
                cropOffset = new Vector2(0f, 0f);
                image.enabled = false;

                firstResults.Add(firstResult);
                secondResults.Add(secondResult);
            }

            saveFolder = tmpSaveFolder;
            // 触发最终回调
            onBothComplete?.Invoke(firstResults, secondResults);
        }

        // 协程：顺序执行一次设计截图
        private IEnumerator CoCaptureOnlyDesign(Action<byte[], string> onBothComplete)
        {
            // 存储两次截图的结果
            byte[] secondResult = null;
            string tmpFolder = "";

            var tmpSaveFolder = saveFolder;
            saveFolder = Path.Combine(saveFolder, DateTime.Now.ToString("yyyyMMdd_HHmmss"));
            tmpFolder = saveFolder;

            var mugActualModelRenderFixed = uiRoot.GetComponent<MugActualModelRender_Fixed>();
            var image = mugActualModelRenderFixed.designParent.GetChild(0).GetComponent<UnityEngine.UI.Image>();

            bool tmpImageActive = image.enabled;
            image.enabled = mugActualModelRenderFixed.productScriptableObject.isShowTemplate;

            var verticalLayoutGroup = mugActualModelRenderFixed.designParent.GetComponent<VerticalLayoutGroup>();
            verticalLayoutGroup.enabled = true;

            var tmpWidth = cropWidth;
            var tmpHeight = cropHeight;
            var productScriptableObject = mugActualModelRenderFixed.productScriptableObject;
            var screenshotSize = productScriptableObject.screenshotSize;
            cropWidth = (int)screenshotSize.x;
            cropHeight = (int)screenshotSize.y;
            cropOffset = new Vector2(0.5f, 0.5f);
            onlyFileName = "DesignImage1";

            // 第二次截图（使用修改后的参数）
            Debug.Log("开始第二次截图...");
            yield return StartCoroutine(CaptureAndCrop((secondBytes) =>
            {
                secondResult = secondBytes;
                Debug.Log("第二次截图完成");
            }));
            image.enabled = tmpImageActive;

            // 1. 校验文件是否存在
            var fileInfo = new FileInfo(fullPath);
            if (!fileInfo.Exists)
            {
                Debug.LogError($"原始图片不存在：{fullPath}");
                secondResult = null;
                yield break; // 若在协程中，用 yield break 退出
            }

            try
            {
                // 2. 加载图像并校验原始尺寸
                using (var sImage = SixLabors.ImageSharp.Image.Load(fileInfo.FullName))
                {
                    // 校验原始图片尺寸是否有效
                    if (sImage.Width <= 0 || sImage.Height <= 0)
                    {
                        Debug.LogError($"加载的图片尺寸无效：宽={sImage.Width}, 高={sImage.Height}");
                        secondResult = null;
                        yield break;
                    }

                    if (productScriptableObject.printingSize.x != 0)
                    {
                        // 3. 校验缩放宽度是否有效
                        int targetWidth = (int)ConvertMmToPixel(productScriptableObject.printingSize.x);
                        int targetHeight = (int)ConvertMmToPixel(productScriptableObject.printingSize.y);
                        if (targetWidth <= 0)
                        {
                            Debug.LogError($"缩放宽度无效（必须大于 0）：{targetWidth}");
                            // 可选：使用默认宽度（如 200）避免错误
                            targetWidth = 200;
                        }

                        // 4. 等比缩放（确保目标尺寸有效）
                        // sImage.Mutate(x => x.Resize(new ResizeOptions
                        // {
                        //     Size = new Size(targetWidth, targetHeight), // 高度为0则自动计算
                        //     Mode = ResizeMode.Max,
                        //     Sampler = KnownResamplers.Lanczos3 // 高质量缩放算法
                        // }));
                        // 强制缩放
                        sImage.Mutate(x => x.Resize(targetWidth, targetHeight));
                    }

                    // 5. 确保保存目录存在
                    if (!Directory.Exists(saveFolder))
                    {
                        Directory.CreateDirectory(saveFolder); // 自动创建目录
                    }

                    // 6. 保存缩放后的图片
                    var filePath = Path.Combine(saveFolder, "Printing1.png");
                    sImage.SaveAsPng(filePath, new PngEncoder());

                    // 7. 校验保存结果并读取字节数组
                    if (File.Exists(filePath))
                    {
                        secondResult = File.ReadAllBytes(filePath);
                        Debug.Log($"第二次截图缩放后保存至：{filePath}");
                    }
                    else
                    {
                        Debug.LogError($"图片保存失败，文件不存在：{filePath}");
                        secondResult = null;
                    }
                }
            }
            catch (Exception ex)
            {
                // 捕获所有异常（如图片格式错误、权限问题等）
                Debug.LogError($"图片处理失败：{ex.Message}\n{ex.StackTrace}");
                secondResult = null;
            }

            // 恢复原始参数（避免影响后续截图）
            verticalLayoutGroup.enabled = false;
            cropWidth = tmpWidth;
            cropHeight = tmpHeight;
            cropOffset = new Vector2(0f, 0f);
            image.enabled = false;

            saveFolder = tmpSaveFolder;
            // 触发最终回调
            onBothComplete?.Invoke(secondResult, tmpFolder);
        }

        // 可选：重写基类的立即截图方法，使其默认执行两次
        // public override void CaptureAndCropNow(Action<byte[]> callback = null)
        // {
        //     base.CaptureAndCropNow(callback);
        //     // // 如果需要点击按钮时默认执行两次，可在这里调用CaptureTwice
        //     // CaptureTwice((first, second) =>
        //     // {
        //     //     callback?.Invoke(first); // 这里仅返回第一次的结果，或按需处理
        //     // });
        // }
    }
}