using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using Newtonsoft.Json;
using TMPro;
using Unity.VectorGraphics;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using ZXing;
using ZXing.QrCode;

namespace HK.Tool
{
    public class UploadPhotoPage : MonoBehaviour
    {
        public static UploadPhotoPage instance;

        private void Awake()
        {
            instance = this;
            // gameObject.SetActive(false);
        }

        private void Start()
        {
            // OpenBeamer();
        }

        [SerializeField] private RawImage qrcode;
        [SerializeField] private GameObject loading;

        public void OpenBeamer()
        {
            gameObject.SetActive(true);
            qrcode.gameObject.SetActive(false);
            loading.SetActive(true);
            //qrcode.texture = generateQR("www.google.com");
            qrcodePage.SetActive(true);
            waitingPage.SetActive(false);
            StartCoroutine(GetQrcodeLink());
        }


        private static Color32[] Encode(string textForEncoding, int width, int height)
        {
            var writer = new BarcodeWriter
            {
                Format = BarcodeFormat.QR_CODE,
                Options = new QrCodeEncodingOptions
                {
                    Height = height,
                    Width = width
                }
            };
            return writer.Write(textForEncoding);
        }

        public Texture2D generateQR(string text)
        {
            var encoded = new Texture2D(512, 512);
            var color32 = Encode(text, encoded.width, encoded.height);
            encoded.SetPixels32(color32);
            encoded.Apply();
            return encoded;
        }


        IEnumerator GetQrcodeLink()
        {
            Debug.Log("called");

            WWWForm form = new WWWForm();

            using (UnityWebRequest www = UnityWebRequest.Post("http://3.109.5.166/api/createTicket", form))
            {
                yield return www.SendWebRequest();

                if (www.isNetworkError || www.isHttpError)
                {
                    Debug.Log(www.error);
                }
                else
                {
                    Debug.Log(www.downloadHandler.text);
                    try
                    {
                        QrcodeResponse myDeserializedClass =
                            JsonConvert.DeserializeObject<QrcodeResponse>(www.downloadHandler.text);
                        //Debug.Log(myDeserializedClass.data.ticket);
                        currentTicket = myDeserializedClass.data.ticket;
                        string link = "http://3.109.5.166/uploadi?ticket=" + myDeserializedClass.data.ticket;
                        Debug.Log(link);
                        qrcode.texture = generateQR(link);
                        qrcode.gameObject.SetActive(true);
                        loading.SetActive(false);
                        StartCoroutine(LoopCheck());
                        //StartCoroutine(LoadImageToRawImage(myDeserializedClass.data.qrcode));
                    }
                    catch
                    {
                    }
                }
            }
        }

        public void ClearImages()
        {
            currentSprites.Clear();
        }

        public void RemoveImageAt(int i)
        {
            currentSprites.RemoveAt(i);
        }

        bool IsUploadSuccess = false;

        private IEnumerator LoopCheck()
        {
            IsUploadSuccess = false;
            while (!IsUploadSuccess)
            {
                yield return StartCoroutine(DownloadImageCheck());
                yield return new WaitForSecondsRealtime(3f);
            }
        }

        private IEnumerator DownloadImageCheck()
        {
            if (currentTicket == -1)
            {
                yield break;
            }

            Debug.Log(currentTicket);

            WWWForm form = new WWWForm();
            form.AddField("ticket", currentTicket);

            using (UnityWebRequest www = UnityWebRequest.Post("http://3.109.5.166/api/getCustomerPhoto", form))
            {
                yield return www.SendWebRequest();

                if (www.isNetworkError || www.isHttpError)
                {
                    Debug.Log(www.error);
                }
                else
                {
                    Debug.Log(www.downloadHandler.text);
                    try
                    {
                        PhotoResponse myDeserializedClass =
                            JsonConvert.DeserializeObject<PhotoResponse>(www.downloadHandler.text);
                        if (myDeserializedClass.success)
                        {
                            IsUploadSuccess = true;
                            StartCoroutine(LoadAllImages(myDeserializedClass.data.url));
                        }
                    }
                    catch
                    {
                    }
                }
            }
        }

        [SerializeField] private GameObject qrcodePage, waitingPage;
        [SerializeField] private Slider slider;
        [SerializeField] private TextMeshProUGUI downloadingProgress;

        // public PhotobeamerModifyingButton currentBeamerButton;
        // public EditBasketballDesign currentBasketballButton;
        public Action<List<Sprite>> UploadCallbackAction;

        private IEnumerator LoadAllImages(List<string> urls)
        {
            slider.value = 0;
            downloadingProgress.text = "";
            waitingPage.SetActive(true);
            qrcodePage.SetActive(false);
            int i = 0;
            currentSprites.Clear();

            Debug.Log(urls.Count);
            foreach (string url in urls)
            {
                downloadingProgress.text = "downloading image " + (i + 1) + "/" + urls.Count;
                yield return StartCoroutine(LoadImageToSprite(url));
                i++;
            }

            Debug.Log(urls.Count);
            Debug.Log("ok now");

            UploadCallbackAction?.Invoke(currentSprites);
            //Debug.Log(currentBeamerButton);
            // if (currentBeamerButton)
            //     currentBeamerButton.FillWithSelectedImages();
            // else if (currentBasketballButton)
            //     currentBasketballButton.FillWithSelectedImages();
            Debug.Log("try to close");
            ClosePage();
        }

        [SerializeField] private GameObject previewPage;
        [SerializeField] private Image[] previewImages;
        private bool IsPreviewing = false;
        [SerializeField] private string[] modelsCommand;

        public void ChooseImage(int i)
        {
            IsPreviewing = false;
            currentSprites.Add(previewImages[i].sprite);
            previewPage.gameObject.SetActive(false);
        }

        public void PutInImages(int i, Sprite sprite)
        {
            previewImages[i].gameObject.SetActive(true);
            previewImages[i].sprite = sprite;
        }


        public List<Sprite> currentSprites = new List<Sprite>();

        private IEnumerator LoadImageToSprite(string url)
        {
            IsPreviewing = true;

            UnityWebRequest request = UnityWebRequestTexture.GetTexture(url);
            request.SendWebRequest();
            while (!request.isDone)
            {
                slider.value = request.downloadProgress;
                yield return null;
            }

            if (request.isNetworkError || request.isHttpError)
                Debug.Log(request.error);
            else
            {
                Sprite sprite = ToSprite(((DownloadHandlerTexture)request.downloadHandler).texture);
                if (sprite != null)
                    currentSprites.Add(sprite);

                /*
                previewPage.SetActive(true);
                foreach(var x in previewImages)
                {
                    x.gameObject.SetActive(false);
                }

                Texture2D texture = ((DownloadHandlerTexture)request.downloadHandler).texture;
                byte[] textureBytes = texture.EncodeToPNG();
                Sprite baseImage = ToSprite(texture);
                PutInImages(0, baseImage);


                //texture = ((DownloadHandlerTexture)request.downloadHandler).texture;
                string savePath = "temp/";
                //byte[] textureBytes = texture.EncodeToPNG();
                if (!Directory.Exists(savePath))
                {
                    Directory.CreateDirectory(savePath);
                }
                string fileName = "downloadedTexture.png";
                string transferName = "transferTexture.png";
                string filePath = Path.Combine(savePath, fileName);
                string transferPath = Path.Combine(savePath, transferName);
                File.WriteAllBytes(filePath, textureBytes);


                int i = 1;
                foreach (var command in modelsCommand)
                {
                    Debug.Log($"i {command} {filePath} {transferPath}");
                    System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo
                    {
                        FileName = "rembg",
                        Arguments = $"i {command} {filePath} {transferPath}",
                        CreateNoWindow = true,
                        UseShellExecute = false,
                        RedirectStandardOutput = true,
                        RedirectStandardError = true
                    };

                    // Run rembg as a separate process
                    System.Diagnostics.Process process = new System.Diagnostics.Process
                    {
                        StartInfo = psi
                    };

                    process.Start();
                    while(!process.HasExited)
                    {
                        yield return null;
                    }

                    if (File.Exists(transferPath))
                    {
                        // Read the processed texture
                        byte[] processedTextureBytes = File.ReadAllBytes(transferPath);
                        Texture2D processedTexture = new Texture2D(1, 1);
                        processedTexture.LoadImage(processedTextureBytes);

                        Sprite sprite = ToSprite(processedTexture);
                        PutInImages(i, sprite);
                        //currentSprites.Add(sprite);
                        Debug.Log("Texture processed and applied successfully.");
                    }

                    i++;

                }





                while (IsPreviewing)
                {
                    yield return null;
                }

                // Check if the directory exists, if not, create it




                */
            }
        }

        private Sprite ToSprite(Texture2D tex)
        {
            if (tex == null)
            {
                Debug.Log("tex is null");
                return null;
            }

            Debug.Log("width");
            Debug.Log(tex?.width);
            tex.Compress(false);
            Debug.Log(tex?.width);
            Sprite sp = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), Vector2.zero);
            return sp;
        }


        int currentTicket = -1;

        public void ClosePage()
        {
            Debug.Log("closing time");
            Debug.Log(currentTicket);

            StartCoroutine(DeleteTicket());
        }

        private IEnumerator DeleteTicket()
        {
            Debug.Log("closing time");
            Debug.Log(currentTicket);

            if (currentTicket == -1)
            {
                gameObject.SetActive(false);
                yield break;
            }

            WWWForm form = new WWWForm();
            form.AddField("ticket", currentTicket);

            using (UnityWebRequest www = UnityWebRequest.Post("http://3.109.5.166/api/deleteTicket", form))
            {
                yield return www.SendWebRequest();

                if (www.isNetworkError || www.isHttpError)
                {
                    Debug.Log(www.error);
                }
                else
                {
                    Debug.Log(www.downloadHandler.text);
                }

                currentTicket = -1;
                gameObject.SetActive(false);
            }
        }

        private IEnumerator LoadImageToRawImage(string url)
        {
            Debug.Log(url);

            UnityWebRequest www = UnityWebRequest.Get(url);
            yield return www.SendWebRequest();
            if (www.isHttpError || www.isNetworkError)
            {
                Debug.Log("Error while Receiving: " + www.error);
            }
            else
            {
                //Convert byte[] data of svg into string
                string bitString = System.Text.Encoding.UTF8.GetString(www.downloadHandler.data);
                Debug.Log(bitString);
                var tessOptions = new VectorUtils.TessellationOptions()
                {
                    StepDistance = 100.0f,
                    MaxCordDeviation = 0.5f,
                    MaxTanAngleDeviation = 0.1f,
                    SamplingStepSize = 0.01f
                };

                // Dynamically import the SVG data, and tessellate the resulting vector scene.
                var sceneInfo = SVGParser.ImportSVG(new StringReader(bitString));
                var geoms = VectorUtils.TessellateScene(sceneInfo.Scene, tessOptions);

                // Build a sprite with the tessellated geometry
                Sprite sprite =
                    VectorUtils.BuildSprite(geoms, 10.0f, VectorUtils.Alignment.Center, Vector2.zero, 128, true);
                //qrcode.sprite = sprite;
            }

            yield return null;
        }
    }

    #region Data

    public class ImageList
    {
        public List<string> url { get; set; }
    }

    public class PhotoResponse
    {
        public bool success { get; set; }
        public ImageList data { get; set; }
        public string message { get; set; }
    }


    public class Data
    {
        public int ticket { get; set; }
        public string qrcode { get; set; }
    }

    public class QrcodeResponse
    {
        public bool success { get; set; }
        public Data data { get; set; }
        public string message { get; set; }
    }

    #endregion
}