using PDF_Office.Helper;
using PDF_Office.Model.SettingsDialog;
using PDF_Office.Properties;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PDF_Office.ViewModels.Dialog
{
    public class SettingsDialogViewModel : BindableBase, IDialogAware
    {
        public string Title => "";

        public event Action<IDialogResult> RequestClose;

        public AnnotateModel Annote { get; set; }

        public DescriptionModel Descript { get; set; }

        public InitialVIewModel View { get; set; }

        public DelegateCommand ResetCommand { get; set; }

        public DelegateCommand ResetAllCommand { get; set; }

        public ObservableCollection<string> AnnoteFamilyList { get; set; }

        public ObservableCollection<string> PageViewList { get; set; }

        public ObservableCollection<string> ZoomModeList { get; set; }

        private int noteSelectedIndex;

        public int NoteSelectedIndex
        {
            get { return noteSelectedIndex; }
            set
            {
                SetProperty(ref noteSelectedIndex, value);
                switch (value)
                {
                    case 0:
                        Annote.AnchoredFamaily = "Courier";
                        break;
                    case 1:
                        Annote.AnchoredFamaily = "Helvetica";
                        break;
                    case 2:
                        Annote.AnchoredFamaily = "Times New Roman";
                        break;
                    default:
                        break;
                }
            }
        }

        private int annoteSelectedIndex;

        public int AnnoteSelectedIndex
        {
            get { return annoteSelectedIndex; }
            set
            {
                SetProperty(ref annoteSelectedIndex, value);
                switch (value)
                {
                    case 0:
                        Annote.TextFontFamaily = "Courier";
                        break;
                    case 1:
                        Annote.TextFontFamaily = "Helvetica";
                        break;
                    case 2:
                        Annote.TextFontFamaily = "Times New Roman";
                        break;
                    default:
                        break;
                }
            }
        }

        private bool lefeSelected;

        public bool LeftSelected
        {
            get { return lefeSelected; }
            set
            {
                SetProperty(ref lefeSelected, value);
                if(value)
                {
                    Annote.TextAlign = System.Windows.TextAlignment.Left;
                }
            }
        }

        private bool centerSelected;

        public bool CenterSelected
        {
            get { return centerSelected; }
            set
            {
                SetProperty(ref centerSelected, value);
                if (value)
                {
                    Annote.TextAlign = System.Windows.TextAlignment.Center;
                }
            }
        }

        private bool rightSelected;

        public bool RightSelected
        {
            get { return rightSelected; }
            set
            {
                SetProperty(ref rightSelected, value);
                if (value)
                {
                    Annote.TextAlign = System.Windows.TextAlignment.Right;
                }
            }
        }

        private bool strechSelected;

        public bool StrechSelected
        {
            get { return strechSelected; }
            set
            {
                SetProperty(ref strechSelected, value);
                if (value)
                {
                    Annote.TextAlign = System.Windows.TextAlignment.Justify;
                }
            }
        }


        private int modeSelectedIndex;
        //选中的模式
        public int ModeSelectedIndex
        {
            get { return modeSelectedIndex; }
            set
            {
                SetProperty(ref modeSelectedIndex, value);
            }
        }


        private bool isDefualtApp;

        /// <summary>
        /// 是否是默认软件
        /// </summary>
        public bool IsDefualtApp
        {
            get { return isDefualtApp; }
            set { isDefualtApp = value; }
        }

        private bool isSetDefualtAppEnable;
        /// <summary>
        /// 是否允许设置默认软件
        /// </summary>
        public bool IsSetDefualtAppEnable
        {
            get { return isSetDefualtAppEnable; }
            set
            {
                SetProperty(ref isSetDefualtAppEnable, value);
            }
        }

        private int pageViewSelectedIndex;

        public int PageViewSelctedIndex
        {
            get { return pageViewSelectedIndex; }
            set
            {
                SetProperty(ref pageViewSelectedIndex, value);
                View.PageView = (ComPDFKitViewer.ViewMode)(value+1);
            }
        }

        private int zoomModeSelectedIndex ;

        public int ZoomModeSelectedIndex
        {
            get { return zoomModeSelectedIndex; }
            set
            {
                SetProperty(ref zoomModeSelectedIndex, value);
                switch (value)
                {
                    case 0:
                        View.ZoomMode = ComPDFKitViewer.FitMode.FitWidth;
                        break;
                    case 1:
                        View.ZoomMode = ComPDFKitViewer.FitMode.FitHeight;
                        break;
                    case 2:
                        View.ZoomMode = ComPDFKitViewer.FitMode.FitSize;
                        break;
                    default:
                        break;
                }
            }
        }


        public SettingsDialogViewModel()
        {
            Annote = new AnnotateModel();
            Descript = new DescriptionModel();
            View = new InitialVIewModel();
            PageViewList = new ObservableCollection<string>();
            AnnoteFamilyList = new ObservableCollection<string>();
            ZoomModeList = new ObservableCollection<string>();

            ResetAllCommand = new DelegateCommand(resetAll);
            ResetCommand = new DelegateCommand(reset);

            InitAnnoteFamily();
            InitPageViews();
            InitZoomMode();
            //根据缓存还原下拉框 单选等
            InitAnnote();
            InitView();

            //判断是否以管理员身份运行
            IsSetDefualtAppEnable = Win32Helper.IsRunAsAdmin();
            IsDefualtApp = Win32Helper.IsDefaultApp();
        }

        private void InitView()
        {
            //页面模式下拉框
            PageViewSelctedIndex = (int)View.PageView - 1;

            //缩放模式下拉框
            switch (View.ZoomMode)
            {
                case ComPDFKitViewer.FitMode.FitWidth:
                    ZoomModeSelectedIndex = 0;
                    break;
                case ComPDFKitViewer.FitMode.FitHeight:
                    ZoomModeSelectedIndex = 1;
                    break;
                case ComPDFKitViewer.FitMode.FitSize:
                    zoomModeSelectedIndex = 2;
                    break;
                case ComPDFKitViewer.FitMode.FitFree:
                    //TODO:
                    break;
                default:
                    break;
            }

        }

        private void InitAnnote()
        {
            //注释对齐方式
            switch (Annote.TextAlign)
            {
                case System.Windows.TextAlignment.Left:
                    LeftSelected = true;
                    break;
                case System.Windows.TextAlignment.Right:
                    RightSelected = true;
                    break;
                case System.Windows.TextAlignment.Center:
                    CenterSelected = true;
                    break;
                case System.Windows.TextAlignment.Justify:
                default:
                    StrechSelected = true;
                    break;
            }

            //文本注释字体
            if(Annote.TextFontFamaily== "Courier")
            {
                AnnoteSelectedIndex = 0;
            }
            else if(Annote.TextFontFamaily== "Helvetica")
            {
                AnnoteSelectedIndex = 1;
            }
            else
            {
                AnnoteSelectedIndex = 2;
            }

            //便签注释字体
            if (Annote.AnchoredFamaily == "Courier")
            {
                NoteSelectedIndex = 0;
            }
            else if (Annote.AnchoredFamaily == "Helvetica")
            {
                NoteSelectedIndex = 1;
            }
            else
            {
                NoteSelectedIndex = 2;
            }
        }

        private void InitPageViews()
        {
            PageViewList.Clear();
            PageViewList.Add("单页");
            PageViewList.Add("单页连续");
            PageViewList.Add("双页");
            PageViewList.Add("双页连续");
            PageViewList.Add("书本");
            PageViewList.Add("书本连续");
        }

        private void InitZoomMode()
        {
            ZoomModeList.Clear();
            ZoomModeList.Add("适应宽度");
            ZoomModeList.Add("适应页面");
            ZoomModeList.Add("实际大小");
        }

        private void InitAnnoteFamily()
        {
            AnnoteFamilyList.Clear();
            AnnoteFamilyList.Add("Courier New");
            AnnoteFamilyList.Add("Arial");
            AnnoteFamilyList.Add("Times New Roman");
        }

        /// <summary>
        /// 重置
        /// </summary>
        private void reset()
        {
            switch (ModeSelectedIndex)
            {
                case 0:
                    Descript.Reset();
                    break;
                case 1:
                    View.Reset();
                    InitView();
                    break;
                case 2:
                    Annote.Reset();
                    InitAnnote();
                    break;
                default:
                    break;
            }
        }

        /// <summary>
        /// 全部重置
        /// </summary>
        private void resetAll()
        {
            View.Reset();
            Descript.Reset();
            Annote.Reset();
            InitAnnote();
            InitView();
        }

        public bool CanCloseDialog()
        {
            return true;
        }

        public void OnDialogClosed()
        {
            try
            {
                View.Save();
                Annote.Save();
                Descript.Save();

                Win32Helper.RegisterDefaultApp(IsDefualtApp);
                Settings.Default.Save();
            }
            catch { }
        }

        public void OnDialogOpened(IDialogParameters parameters)
        {
           
        }
    }
}