using ComDocumentAIKit;
using ComPDFKit_Conversion.Converter;
using ComPDFKitViewer.PdfViewer;
using PDF_Master.CustomControl;
using PDF_Master.Helper;
using PDF_Master.Model;
using PDF_Master.Model.Dialog.ConverterDialogs;
using PDF_Master.Model.Dialog.HomePageToolsDialogs.HomePageBatchProcessing;
using PDF_Master.Properties;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Forms;
using static Dropbox.Api.Sharing.ListFileMembersIndividualResult;
using DialogResult = Prism.Services.Dialogs.DialogResult;

namespace PDF_Master.ViewModels.Dialog.ConverterDialogs
{
    public class ConverterTextDialogViewModel : BindableBase, IDialogAware
    {
        #region 文案

        private string T_title;

        public string T_Title
        {
            get { return T_title; }
            set
            {
                SetProperty(ref T_title, value);
            }
        }

        private string T_yes;

        public string T_YES
        {
            get { return T_yes; }
            set
            {
                SetProperty(ref T_yes, value);
            }
        }

        private string T_no;

        public string T_No
        {
            get { return T_no; }
            set
            {
                SetProperty(ref T_no, value);
            }
        }
        private string T_pageRange;

        public string T_PageRange
        {
            get { return T_pageRange; }
            set
            {
                SetProperty(ref T_pageRange, value);
            }
        }

        private string _TextUpgrade;
        public string TextUpgrade
        {
            get { return _TextUpgrade; }
            set { _TextUpgrade = value; }
        }

        private void IntString()
        {
            TextUpgrade = App.ServiceLoader.GetString("TextUpgrade");
            T_Title = App.MainPageLoader.GetString("Convert_PDFToTextTitle");
            T_YES = App.MainPageLoader.GetString("Convert_Yes");
            T_No = App.MainPageLoader.GetString("Convert_No");
            T_PageRange = App.MainPageLoader.GetString("Convert_PDFPageRange");
        }

        #endregion

        public string Title => "";

        public event Action<IDialogResult> RequestClose;

        #region 参数和属性
        public ConverterTextDialogModel ConverterTextModel = new ConverterTextDialogModel();

        public CPDFViewer currentViewer;

        public IDialogService dialogs;

        public string CurrentPageIndex = "1";

        public bool IsCurrentPageIndex = true;

        public string PageRangeText { set; get; } = "0";

        public string PageRangeSelectIndex { set; get; } = "0";

        private int maxPageRange = 0;
        public int MaxPageRange
        {
            get { return maxPageRange; }
            set
            {
                SetProperty(ref maxPageRange, value);
            }
        }

        private bool oCRCheckBoxIsCheckBox = false;
        public bool OCRCheckBoxIsCheckBox
        {
            get { return oCRCheckBoxIsCheckBox; }
            set
            {
                SetProperty(ref oCRCheckBoxIsCheckBox, value);
                ConverterTextModel.Options.IsAllowOCR = oCRCheckBoxIsCheckBox;
            }
        }

        private int languageSelectedIndex = 2;
        public int LanguageSelectedIndex
        {
            get { return languageSelectedIndex; }
            set
            {
                SetProperty(ref languageSelectedIndex, value);
                SelectLanguage(languageSelectedIndex);

            }
        }

        private Visibility limitationsConvertVisible = Visibility.Hidden;

        public Visibility LimitationsConvertVisible
        {
            get { return limitationsConvertVisible; }
            set
            {
                SetProperty(ref limitationsConvertVisible, value);
            }
        }
        #endregion

        #region 委托声明
        public DelegateCommand CancelCommand { get; set; }

        public DelegateCommand ConverterCommnad { get; set; }

        public DelegateCommand<object> CmbPageSelectionChanged { get; set; }

        public DelegateCommand<object> CmbPageTextChanged { get; set; }

        public DelegateCommand SetCustomPageRangeCommand { get; set; }

        public DelegateCommand<object> PreviewCancelDownCommand { get; set; }

        public DelegateCommand BatchConverterCommand { get; set; }

        public DelegateCommand UnlockMouseDownCommand { get; set; }

        public DelegateCommand OpenOCRCommand { get; set; }
        #endregion

        public ConverterTextDialogViewModel(IDialogService dialogService)
        {
            IntString();
            CancelCommand = new DelegateCommand(cancel);
            ConverterCommnad = new DelegateCommand(converter);
            CmbPageSelectionChanged = new DelegateCommand<object>(CmbPageSelectionChangedEvent);
            CmbPageTextChanged = new DelegateCommand<object>(CmbPageTextChangedEvent);
            SetCustomPageRangeCommand = new DelegateCommand(SetCustomPageRange);
            PreviewCancelDownCommand = new DelegateCommand<object>(PreviewCancelDown);
            BatchConverterCommand = new DelegateCommand(BatchConverter);
            UnlockMouseDownCommand = new DelegateCommand(UnlockMouseDown);
            OpenOCRCommand = new DelegateCommand(openOCR);
            dialogs = dialogService;
        }
        #region 逻辑函数

        private void openOCR()
        {
            if (OCRCheckBoxIsCheckBox == true)
            {
                bool folderMD5 = FileComparisonHelper.OCRModelItExist();
                if (folderMD5)
                {
                    string folderPath = System.IO.Path.Combine(App.CurrentPath, "OCREngine");
                    CPDFConverter.InitOCRLibrary(Path.Combine(folderPath, "x64"));
                    CPDFConverter.SetOCRModelPath(Path.Combine(folderPath, "source", "models"));
                }
                else
                {
                    AlertsMessage alertsMessage = new AlertsMessage();
                     alertsMessage.ShowDialog(App.MainPageLoader.GetString("OCR_PleaseDownload"), "", App.MainPageLoader.GetString("OCR_CancelDownload"), App.MainPageLoader.GetString("OCR_Download"));
                    if (alertsMessage.result == ContentResult.Ok)
                    {
                        FileComparisonHelper.RemoveOCRModel();
                        DialogParameters oCRDownloadProgress = new DialogParameters();
                        dialogs.ShowDialog(DialogNames.OCRDownloadProgress, oCRDownloadProgress, e =>
                        {

                            if (e.Result == Prism.Services.Dialogs.ButtonResult.OK)
                            {
                                string folderPath = System.IO.Path.Combine(App.CurrentPath, "OCREngine");
                                CPDFConverter.InitOCRLibrary(Path.Combine(folderPath, "x64"));
                                CPDFConverter.SetOCRModelPath(Path.Combine(folderPath, "source", "models"));
                            }
                            else
                            {
                                OCRCheckBoxIsCheckBox = false;
                            }
                        });
                    }
                    else
                    {
                        OCRCheckBoxIsCheckBox = false;
                    }
                }

            }

        }

        public void SetCustomPageRange()
        {
            if (PageRangeSelectIndex == "4")
            {

                List<int> PageIndexLists = new List<int>();
                if (!CommonHelper.GetPagesInRange(ref PageIndexLists, PageRangeText, currentViewer.Document.PageCount, new char[] { ',' }, new char[] { '-' }))
                { //TODO
                    //AlertsMessage alertsMessage = new AlertsMessage();
                    //alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                    //if (alertsMessage.result == ContentResult.Ok)
                    //{
                    //    return;
                    //}
                    //else
                    //{
                    //    //this.eventAggregator.GetEvent<DeleteWatermarkEvent>().Publish(new EnumDeleteUnicode
                    //    //{
                    //    //    Unicode = Unicode,
                    //    //    Status = EnumDelete.StatusCreate
                    //    //});
                    //    return;
                    //}

                }
            }
        }
        private void cancel()
        {
            RequestClose.Invoke(new DialogResult(ButtonResult.Cancel));
        }

        private void PreviewCancelDown(object e)
        {
            var PageRangeComboBox = e as WritableComboBox;
            if (PageRangeComboBox != null)
            {
                PageRangeComboBox.IsloseFocus = false;
            }
        }

        private void converter()
        {
            if (PageRangeSelectIndex == "4")
            {

                List<int> PageIndexLists = new List<int>();
                if (!CommonHelper.GetPagesInRange(ref PageIndexLists, PageRangeText, currentViewer.Document.PageCount, new char[] { ',' }, new char[] { '-' }))
                { //TODO
                    AlertsMessage alertsMessage = new AlertsMessage();
                    alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                    if (alertsMessage.result == ContentResult.Ok)
                    {
                        return;
                    }
                    else
                    {
                        //this.eventAggregator.GetEvent<DeleteWatermarkEvent>().Publish(new EnumDeleteUnicode
                        //{
                        //    Unicode = Unicode,
                        //    Status = EnumDelete.StatusCreate
                        //});
                        return;
                    }

                }
            }
            System.Windows.Forms.SaveFileDialog sfd = new System.Windows.Forms.SaveFileDialog();
            /*
             *设置这个对话框的起始保存路径
             */
            sfd.InitialDirectory = currentViewer.Document.FilePath;
            /*
             *设置保存的文件的类型，注意过滤器的语法 例子：“文件类型|*.后缀名；*.后缀名；”
             */
            sfd.Filter = "Txt|*.txt;";
            /*
             *调用ShowDialog()方法显示该对话框，该方法的返回值代表用户是否点击了确定按钮
             */
            sfd.FileName = currentViewer.Document.FileName + ".txt";
            /*
             * 做一些工作
             */
            if (sfd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                ConverterTextModel.OutputPath = sfd.FileName;
                try { if (File.Exists(ConverterTextModel.OutputPath)) File.Delete(ConverterTextModel.OutputPath); }
                catch
                {
                    AlertsMessage alertsMessage = new AlertsMessage();
                    alertsMessage.ShowDialog("", App.MainPageLoader.GetString("FileNotExistWarning"), App.ServiceLoader.GetString("Text_ok"));
                    return;
                }

            }
            else
            {
                return;
            }
            HomePageEditHelper.GetPagerange(PageRangeSelectIndex, currentViewer, ref ConverterTextModel.PageRange, PageRangeText, true, CurrentPageIndex);
            if (ConverterTextModel.PageRange == "")
            {
                Trace.WriteLine("输入不对");
                AlertsMessage alertsMessage = new AlertsMessage();
                alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                return;
            }
            char[] enumerationSeparator = new char[] { ',' };
            char[] rangeSeparator = new char[] { '-' };
            if (!CommonHelper.GetPagesInRange(ref ConverterTextModel.PageIndexLists, ConverterTextModel.PageRange, currentViewer.Document.PageCount, enumerationSeparator, rangeSeparator))
            { //TODO

                Trace.WriteLine("输入不对");
                AlertsMessage alertsMessage = new AlertsMessage();
                alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                return;
            }
            ConverterTextModel.txtOptions = ConverterTextModel.TxtOptions();
            //DialogParameters value = new DialogParameters();
            //value.Add(ParameterNames.ConverterType, "Text");
            //value.Add(ParameterNames.ConverterTypeModel, ConverterTextModel);
            var dialogresult = new DialogResult(ButtonResult.OK);
            dialogresult.Parameters.Add(ParameterNames.ConverterType, "Text");
            dialogresult.Parameters.Add(ParameterNames.ConverterTypeModel, ConverterTextModel);
            RequestClose.Invoke(dialogresult);
            //RequestClose?.Invoke(new DialogResult(ButtonResult.OK));
            //dialogs.ShowDialog(DialogNames.ConverterProgressBarDialog, value, e =>
            //{

            //});
        }

        private void CmbPageSelectionChangedEvent(object e)
        {
            ///这里采用的是将预览UI控件传递过来的方式，为下下策
            ///正确的方式应该是 通过声明一些属性，再通过绑定来更新预览控件对应值的形式
            ///但是目前发现自定义控件的依赖属性绑定有些问题，因此先用此方法，将业务逻辑代码先调整到VM里
            var ConverterPreview = e as PageTurningPreview;
            if (ConverterPreview != null)
            {
                string PageRangeSelectIndex = this.PageRangeSelectIndex;
                var currentViewer = this.currentViewer;
                string PageRange = "";
                var PageRangeText = this.PageRangeText;
                if (PageRangeSelectIndex == "0" || PageRangeSelectIndex == "2" || PageRangeSelectIndex == "3" || PageRangeSelectIndex == "4")
                {
                    if (PageRangeSelectIndex == "4") { HomePageEditHelper.GetPagerange("0", currentViewer, ref PageRange, PageRangeText, true); } else { HomePageEditHelper.GetPagerange(PageRangeSelectIndex, currentViewer, ref PageRange, PageRangeText, true); }
                    char[] enumerationSeparator = new char[] { ',' };
                    char[] rangeSeparator = new char[] { '-' };
                    if (!CommonHelper.GetPagesInRange(ref ConverterPreview.PageIndexLists, PageRange, currentViewer.Document.PageCount, enumerationSeparator, rangeSeparator))
                    { //TODO
                        ConverterPreview.PageIndexLists.Add(0);
                        Trace.WriteLine("输入不对");
                        AlertsMessage alertsMessage = new AlertsMessage();
                        alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                        return;
                    }

                }
                if (PageRangeSelectIndex == "1")
                {
                    char[] enumerationSeparator = new char[] { ',' };
                    char[] rangeSeparator = new char[] { '-' };
                    if (!CommonHelper.GetPagesInRange(ref ConverterPreview.PageIndexLists, (currentViewer.CurrentIndex + 1).ToString()
, currentViewer.Document.PageCount, enumerationSeparator, rangeSeparator))
                    { //TODO

                        Trace.WriteLine("输入不对");
                        AlertsMessage alertsMessage = new AlertsMessage();
                        alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                        return;
                    }
                    this.CurrentPageIndex = (ConverterPreview.PageIndexLists.Last<int>() + 1).ToString();
                }
                // ConverterPreview.PageIndex.Text = (ConverterPreview.PageIndexLists.Last<int>() + 1).ToString();
                ConverterPreview.PageIndex.Text = ConverterPreview.PageIndexLists.Count.ToString();
                ConverterPreview.CurrentIndex = 0;
            }
        }

        private void CmbPageTextChangedEvent(object e)
        {
            var ConverterPreview = e as PageTurningPreview;
            if (ConverterPreview != null)
            {
                if (ConverterPreview != null)
                {
                    string PageRangeSelectIndex = this.PageRangeSelectIndex;
                    var currentViewer = this.currentViewer;
                    string PageRange = "";
                    var PageRangeText = this.PageRangeText;
                    HomePageEditHelper.GetPagerange(PageRangeSelectIndex, currentViewer, ref PageRange, PageRangeText, true);
                    char[] enumerationSeparator = new char[] { ',' };
                    char[] rangeSeparator = new char[] { '-' };

                    if (!CommonHelper.GetPagesInRange(ref ConverterPreview.PageIndexLists, PageRange, currentViewer.Document.PageCount, enumerationSeparator, rangeSeparator))
                    { //TODO
                        HomePageEditHelper.GetPagerange("0", currentViewer, ref PageRange, PageRangeText, true);

                        if (!CommonHelper.GetPagesInRange(ref ConverterPreview.PageIndexLists, PageRange, currentViewer.Document.PageCount, enumerationSeparator, rangeSeparator))
                        { //TODO
                            ConverterPreview.PageIndexLists.Add(0);
                            Trace.WriteLine("输入不对");
                            AlertsMessage alertsMessage = new AlertsMessage();
                            alertsMessage.ShowDialog("", App.MainPageLoader.GetString("PageRangeWarning"), App.ServiceLoader.GetString("Text_ok"));
                            return;
                        }
                        ConverterPreview.PageIndex.Text = ConverterPreview.PageIndexLists.Count.ToString();
                        ConverterPreview.CurrentIndex = 0;
                        return;
                    }
                    else
                    {
                        // ConverterPreview.PageIndex.Text = (ConverterPreview.PageIndexLists.Last<int>() + 1).ToString();
                        ConverterPreview.PageIndex.Text = ConverterPreview.PageIndexLists.Count.ToString();
                        ConverterPreview.CurrentIndex = 0;
                    }
                }
            }
        }

        private void BatchConverter()
        {
            DialogParameters convertpdftoword = new DialogParameters();
            convertpdftoword.Add(ParameterNames.BatchProcessing_Name, "0");
            convertpdftoword.Add("ConverterTypeIndex", 6);
            HomePageBatchProcessingDialogModel.FilePaths = new List<string> { currentViewer.Document.FilePath.ToString() };
            HomePageBatchProcessingDialogModel.BatchProcessingIndex = 1;
            convertpdftoword.Add(ParameterNames.FilePath, new string[] { currentViewer.Document.FilePath.ToString() });
            dialogs.ShowDialog(DialogNames.HomePageBatchProcessingDialog, convertpdftoword, e => { });
        }

        private void UnlockMouseDown()
        {
            ConverterHelper.convertUnlock();
        }

        private void SelectLanguage(int SelectedIndex)
        {

            switch (SelectedIndex)
            {
                case 0:
                    ConverterTextModel.Options.OCRLanguage = COCRLanguage.COCRLanguageChinese;
                    break;
                case 1:
                    ConverterTextModel.Options.OCRLanguage = COCRLanguage.COCRLanguageChineseTraditional;
                    break;
                case 2:
                    ConverterTextModel.Options.OCRLanguage = COCRLanguage.COCRLanguageEnglish;
                    break;
                case 3:
                    ConverterTextModel.Options.OCRLanguage = COCRLanguage.COCRLanguageJapanese;
                    break;
                case 4:
                    ConverterTextModel.Options.OCRLanguage = COCRLanguage.COCRLanguageKorean;
                    break;
                default:
                    break;
            }
        }
        #endregion

        #region 构架行为

        public bool CanCloseDialog()
        {
            return true;
        }

        public void OnDialogClosed()
        {
        }

        public void OnDialogOpened(IDialogParameters parameters)
        {
            CPDFViewer pdfViewer = null;
            parameters.TryGetValue<CPDFViewer>(ParameterNames.PDFViewer, out pdfViewer);
            if (pdfViewer != null)
            {
                currentViewer = pdfViewer;
                MaxPageRange = currentViewer.Document.PageCount;
                if (currentViewer.Tag != null) { ConverterTextModel.Pawssword = currentViewer.Tag.ToString(); }
                ConverterTextModel.InputPath = pdfViewer.Document.FilePath;
                FileInfo fileinfo = new FileInfo(ConverterTextModel.InputPath);
                ConverterTextModel.OutputPath = fileinfo.DirectoryName;
                if (Settings.Default.UserDate.subscribestatus != 1)
                {
                    LimitationsConvertVisible = Visibility.Visible;
                }
                LanguageSelectedIndex = ConverterHelper.GetCOCRLanguageInt();
            }
        }
        #endregion
    }
}