using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Platform.Presentation.Interfaces;
using System.IO;
using System.ComponentModel;

namespace TellerSystem.Controls.Ext.Controls
{
    /// <summary>
    /// ImageManager.xaml 的交互逻辑
    /// </summary>
    [DesignTimeVisible(false)]
    public partial class ImageManager : UserControl
    {
        public ImageManager()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 注册的图像采集信息列表
        /// </summary>
        private List<ImageCollectInfo> _registerImageCollectInfo = new List<ImageCollectInfo>();

        /// <summary>
        /// 注册图像采集动作
        /// </summary>
        /// <param name="name"></param>
        /// <param name="description"></param>
        public void RegisterImageCollectInfo(string name, string description)
        {
            if (_registerImageCollectInfo.Exists(x => x.Name == name))
            {
                throw new ArgumentOutOfRangeException(string.Format("图像采集控件：{0}采集项已经注册！", name));
            }
            _registerImageCollectInfo.Add(new ImageCollectInfo { Name = name, Description = description, Collectable = false });
        }

        /// <summary>
        /// 设置是否执行采集动作
        /// </summary>
        /// <param name="name"></param>
        /// <param name="flag"></param>
        public void SetCollectable(string name, bool flag, string description = null)
        {
            var item = _registerImageCollectInfo.FirstOrDefault(x => x.Name == name);
            if (item != null)
            {
                if (!string.IsNullOrEmpty(description))
                    item.Description = description;
                item.IsCollected = false;
                item.Collectable = flag;
                //更新数据源
                DataList.ItemsSource = _registerImageCollectInfo.Where(x => x.Collectable);
                DataList.Items.Refresh();
            }
        }

        /// <summary>
        /// 获取指定的图像采集数据
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public byte[] GetCollectImage(string name)
        {
            byte[] ret = null;
            var item = _registerImageCollectInfo.FirstOrDefault(x => x.Name == name && x.Collectable && x.IsCollected);
            if (item != null)
            {
                //将图片转换成数据
                ret = item.Data;
            }
            return ret;
        }

        /// <summary>
        /// 取出所有已采集的图像信息
        /// </summary>
        /// <returns></returns>
        public Dictionary<string, byte[]> GetAllCollectImage()
        {
            var ret = new Dictionary<string, byte[]>();
            var list = _registerImageCollectInfo.FindAll(x => x.Collectable && x.IsCollected);
            foreach (var item in list)
            {
                if (item.IsCollected)
                {
                    //取出图像数据 
                    ret.Add(item.Name, item.Data);
                }
            }
            return ret;
        }

        /// <summary>
        /// 是否全部采集完毕
        /// </summary>
        /// <returns></returns>
        public bool IsCollectAll()
        {
            var list = _registerImageCollectInfo.Find(x => x.Collectable && !x.IsCollected);
            return list == null;
        }

        class ImageCollectInfo
        {
            /// <summary>
            /// 图像id
            /// </summary>
            public string Name { get; set; }
            /// <summary>
            /// 描述
            /// </summary>
            public string Description { get; set; }
            /// <summary>
            /// 是否已采集
            /// </summary>
            public bool IsCollected { get; set; }
            /// <summary>
            /// 是否参与采集
            /// </summary>
            public bool Collectable { get; set; }
            /// <summary>
            /// 数据图像
            /// </summary>
            public ImageSource ImageSource { get; set; }
            /// <summary>
            /// 图像数据
            /// </summary>
            public byte[] Data { get; set; }
        }

        private void CollectButton_Click(object sender, RoutedEventArgs e)
        {
            //调用采集方法采集图片
            var btn = sender as Button;
            if (btn != null && btn.Tag is ImageCollectInfo)
            {
                var info = btn.Tag as ImageCollectInfo;
                //若为身份证，则采用去黑边
                var data = CollectImage(info.Description.Contains("身份证"));
                if (data == null) return;
                info.Data = data;
                var imageSourceConverter = new ImageSourceConverter();
                info.ImageSource = imageSourceConverter.ConvertFrom(new System.IO.MemoryStream(info.Data)) as ImageSource;
                info.IsCollected = true;

                DataList.Items.Refresh();
            }
        }

        private byte[] CollectImage(bool isIDCard)
        {
            ////采用文件录入
            var dialog = new Microsoft.Win32.OpenFileDialog();
            dialog.ShowDialog(Application.Current.MainWindow);
            if (string.IsNullOrEmpty(dialog.FileName)) return null;
            return File.ReadAllBytes(dialog.FileName);

            //采集图片
            //var page = new CameraViewer(isIDCard);
            //ParentIPage.ShowPage(page, "扫描图像");
            //page.CloseCamera();
            //return page.ViewStateData.GetDictionaryItem<byte[]>("ImageData");
        }

        #region ParentIPage
        private IPage _parentIPage;
        /// <summary>
        /// Owner
        /// </summary>
        public IPage ParentIPage
        {
            get
            {
                if (_parentIPage == null)
                {
                    _parentIPage = GetCurrentIPage(this);
                }
                return _parentIPage;
            }
            set { _parentIPage = value; }
        }
        private IPage GetCurrentIPage(DependencyObject visual)
        {
            IPage ret = null;
            if (visual != null)
            {
                var parent = LogicalTreeHelper.GetParent(visual);
                if (parent != null)
                {
                    if (parent is IPage)
                        ret = parent as IPage;
                    else
                        ret = GetCurrentIPage(parent);
                }
            }
            return ret;
        }
        #endregion

    }
}