using AForge.Controls;
using ShenTun.ImageCollection.Common;
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Security.Policy;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ShenTun.ImageCollection.AForgeCamera
{
    public partial class FrmImageList : Form
    {
        private RequestImageEdit requset;
        private bool isLoad = false;
        private string defalutImg = string.Empty;
        public FrmImageList(RequestImageEdit requestImage)
        {
            SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            SetStyle(ControlStyles.UserPaint, true);
            SetStyle(ControlStyles.DoubleBuffer, true);
            InitializeComponent();
            requset = requestImage;
            lvList.SmallImageList = smallList;
        }
        private void FrmImageList_Load(object sender, EventArgs e)
        {
            try
            {
                //string path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
                //defalutImg = string.Format("{0}\\defalut.jpg", path);
                //imageView1.loadImageAndInit(defalutImg, null);
                InitCtrl();
                DowloadFile();
                if (this.lvList.Items.Count == 0) return;
                int index = this.lvList.SelectedIndices.Count > 0 ?
                this.lvList.SelectedIndices[0] : 0;
                RequestImage image = lvList.Items[index].Tag as RequestImage;
                ShowImage(image);
            }
            catch (Exception ex)
            {
                MessageBox.Show("载入图片异常：" + ex.Message);
            }
        }
        private void InitCtrl()
        {
            lvList.Items.Clear();
            lvList.Columns.Clear();
            //lvList.ShowGroups = false;
            lvList.View = View.Details;//详细信息
            #region 列标头信息 添加
            lvList.Columns.Add("文件名", 300, HorizontalAlignment.Left);
            lvList.Columns.Add("修改日期", 300, HorizontalAlignment.Left);
            lvList.Columns.Add("类型", 80, HorizontalAlignment.Left);
            lvList.Columns.Add("大小", 60, HorizontalAlignment.Left);
            #endregion
        }
        private void ShowImage(RequestImage requestImage)
        {
            if (requestImage == null) return;

            SelectImageInfo imageInfo = new SelectImageInfo()
            {
                ImageSvr = requset.ImageSvr,
                PeisApiUrl = requset.PeisApiUrl,
                Token = requset.Token,
                Image = requestImage
            };
            using (FileStream fileStream = File.Open(requestImage.localPathName, FileMode.Open, System.IO.FileAccess.Read, FileShare.ReadWrite))
            {
                // 创建一个字节数组来保存FileStream的内容
                byte[] fileBytes = new byte[fileStream.Length];
                fileStream.Read(fileBytes, 0, fileBytes.Length);

                // 使用字节数组创建MemoryStream
                using (MemoryStream memoryStream = new MemoryStream(fileBytes))
                {
                    imageEdit1.LoadImageAndInit(memoryStream, imageInfo);
                }
            }
        }
        private void DowloadFile()
        {
            if (string.IsNullOrEmpty(requset.ImageSvr))
            {
                MessageBox.Show("获取ImageSvr字段失败");
                return;
            }
            if (requset.Images == null)
            {
                MessageBox.Show("获取Images字段失败");
                return;
            }
            smallList.Images.Clear();
            int index = 0;//定义索引
            var objStr = requset.Images.ToString();
            List<RequestImage> imgList=new List<RequestImage>();
            if (objStr.Contains("["))
            {
                var array = JsonHelper.DeserializeObject<RequestImage[]>(objStr);
                imgList=array.ToList();
            }
            else {
                var obj = JsonHelper.DeserializeObject<RequestImage>(objStr);
                imgList.Add(obj);
            }

            Uri uri = new Uri(requset.ImageSvr);
            progressBar1.Visible = true;
            foreach (RequestImage img in imgList) {
                if (!File.Exists(img.localPathName)) {
                    int iPos=img.pictureFilename.LastIndexOf("/");
                    string localFilename= img.pictureFilename.Substring(iPos+1);
                    Uri uri2 = new Uri(uri, img.pictureFilename);
                    string url = uri2.ToString();
                    string dirPath= Path.GetDirectoryName(img.localPathName);
                    try
                    {
                        if (!Directory.Exists(dirPath))
                        {
                            Directory.CreateDirectory(dirPath);
                        }
                        if (string.IsNullOrEmpty(img.localPathName))
                        {
                            string filePath = ImageHelper.GetLoaclPath(requset.ImagePath, requset.AsbitemName);
                            string fileName = string.Format("{0}\\{1}", filePath, localFilename);
                            img.localPathName = fileName;
                            if (File.Exists(fileName))
                            {
                                File.Delete(fileName);

                            }
                            img.localPathName = fileName;
                        }
                    }
                    catch {
                        string filePath = ImageHelper.GetLoaclPath(requset.ImagePath, requset.AsbitemName);
                        if (!Directory.Exists(filePath))
                        {
                            Directory.CreateDirectory(filePath);
                        }
                        string fileName = string.Format("{0}\\{1}", filePath, localFilename);
                        img.localPathName = fileName;
                        if (File.Exists(fileName))
                        {
                            File.Delete(fileName);

                        }
                        img.localPathName = fileName;
                    }


                    
                    DownloadFile(url, img.localPathName,this.progressBar1);
                }    
            }
            progressBar1.Visible = false;
            InitCtrl();
            foreach (RequestImage imge in imgList) {
                using (FileStream image = new FileStream(imge.localPathName, FileMode.Open, System.IO.FileAccess.Read, FileShare.ReadWrite))
                {
                    Image img = Image.FromStream(image, false, true);
                    string PthName = Path.GetFileNameWithoutExtension(imge.localPathName);//获取图片的名称
                    smallList.Images.Add(PthName, img);//小图标显示
                                                       //dic.Add(index, imge.localPathName);//index 图片的索引 fpath 图片的路径 
                    ListViewItem li = new ListViewItem();
                    li.ImageIndex = index;//获取图片的索引
                    li.Text = PthName;//获取图片的文本信息
                    li.Tag = imge;
                    li.SubItems.Add(File.GetCreationTime(imge.localPathName).ToString());//获取文件修改的日期
                    li.SubItems.Add(Path.GetExtension(imge.localPathName));//文件的类型
                    long length = new FileInfo(imge.localPathName).Length;//获取文件大小  字节
                    li.SubItems.Add((length / 1024).ToString());//KB
                    lvList.Items.Add(li);//添加到集合中显示
                }
                    
                index++;
            }
            //lvList.GridLines = true;//显示网格
            isLoad = true;
        }

        public void DownloadFile(string url, string filename, System.Windows.Forms.ProgressBar prog)
        {
            try
            {
                System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(url);
                System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();
                long totalBytes = myrp.ContentLength;
                if (prog != null)
                {
                    prog.Maximum = (int)totalBytes;
                }
                using (System.IO.Stream st = myrp.GetResponseStream())
                {
                    using (System.IO.Stream so = new System.IO.FileStream(filename, System.IO.FileMode.CreateNew))
                    {
                        long totalDownloadedByte = 0;
                        byte[] by = new byte[1024];
                        int osize = st.Read(by, 0, (int)by.Length);
                        while (osize > 0)
                        {
                            totalDownloadedByte = osize + totalDownloadedByte;
                            System.Windows.Forms.Application.DoEvents();
                            so.Write(by, 0, osize);
                            if (prog != null)
                            {
                                prog.Value = (int)totalDownloadedByte;
                            }
                            osize = st.Read(by, 0, (int)by.Length);
                        }
                    }
                }
            }
            catch (System.Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        private void btnLoad_Click(object sender, EventArgs e)
        {
            try
            {
                btnLoad.Enabled = false;
                DowloadFile();
            }
            catch (Exception ex) {
                progressBar1.Visible = false;
                MessageBox.Show("加载图片异常：" + ex.Message);
            }
            finally
            {
                btnLoad.Enabled = true;
            }
        }

        private void btnPre_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.lvList.Items.Count == 0) return;
                int index = this.lvList.SelectedIndices.Count > 0 ?
                this.lvList.SelectedIndices[0] - 1 : 0;
                if (index >= 0 && index < this.lvList.Items.Count)
                {
                    this.lvList.SelectedIndices.Clear();
                    this.lvList.SelectedIndices.Add(index);
                    this.lvList.Items[index].Focused = true;
                    RequestImage image= lvList.Items[index].Tag as RequestImage;
                    ShowImage(image);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("加载上一张异常：" + ex.Message);
            }
        }

        private void btnNext_Click(object sender, EventArgs e)
        {
            try
            {
                if (this.lvList.Items.Count == 0) return;
                int index = this.lvList.SelectedIndices.Count > 0 ?
                this.lvList.SelectedIndices[0] + 1 : 0;
                if (index >= 0 && index < this.lvList.Items.Count)
                {
                    this.lvList.SelectedIndices.Clear();
                    this.lvList.SelectedIndices.Add(index);
                    this.lvList.Items[index].Focused = true;
                    RequestImage image = lvList.Items[index].Tag as RequestImage;
                    ShowImage(image);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("加载下一张异常：" + ex.Message);
            }
        }

        private void lvList_DoubleClick(object sender, EventArgs e)
        {
            try
            {
                if (this.lvList.Items.Count == 0) return;
                int index = this.lvList.SelectedIndices.Count > 0 ?
                this.lvList.SelectedIndices[0] : 0;
                RequestImage image = lvList.Items[index].Tag as RequestImage;
                ShowImage(image);
            }
            catch (Exception ex)
            {
                MessageBox.Show("双击加载图片异常：" + ex.Message);
            }
        }


    }
}