using ComPDFKit.PDFDocument;
using PDF_Office.Helper;
using PDF_Office.Model.EditTools.Background;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PDF_Office.ViewModels.EditTools.Background
{
    public class BackgroundCreateFileContentViewModel : BindableBase, INavigationAware
    {
        public BackgroundInfo BackgroundInfo { get; set; } = new BackgroundInfo();

        private List<string> _rotationList = new List<string>();
        public List<string> RotationList
        {
            get { return _rotationList; }
            set { SetProperty(ref _rotationList, value); }
        }

        private List<string> _opacityList = new List<string>();
        public List<string> OpacityList
        {
            get { return _opacityList; }
            set
            {
                SetProperty(ref _opacityList, value);
            }
        }

        private List<string> _relativeRatioList = new List<string>();
        public List<string> RelativeRatioList
        {
            get { return _relativeRatioList; }
            set
            {
                SetProperty(ref _relativeRatioList, value);
            }
        }

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

        private int _opacityNumber = 100;
        public int OpacityNumber
        {
            get { return _opacityNumber; }
            set { SetProperty(ref _opacityNumber, value); }
        }

        private int _relativeRatioNumber = 0;
        public int RelativeRatioNumber
        {
            get { return _relativeRatioNumber; }
            set { SetProperty(ref _rotationNumber, value); }
        }

        private ObservableDictionary<string, bool> _getLocationFromNumber = new ObservableDictionary<string, bool>();
        public ObservableDictionary<string, bool> GetLocationFromNumber
        {
            get { return _getLocationFromNumber; }
        }

        public BackgroundCreateFileContentViewModel()
        {
            ChangeLocationCommand = new DelegateCommand<object>(ChangeLocation);
            InitComponent();
            BackgroundInfo.BackgroundHorizalign = C_Background_Horizalign.BG_HORIZALIGN_CENTER;
            BackgroundInfo.BackgroundVertalign = C_Background_Vertalign.BG_VERTALIGN_CENTER;
            InitLocationButtonMatrix();
        }

        public void InitComponent()
        {
            InitOpacityList();
            InitRotationList();
            InitRelativeRatioList();
        }

        private void InitRotationList()
        {
            OpacityList.Clear();
            for (int defaultRotation = -45; defaultRotation <= 45; defaultRotation += 15)
            {
                RotationList.Add(defaultRotation.ToString());
            }
        }

        private void InitOpacityList()
        {
            OpacityList.Clear();
            for (int defaultOpacity = 10; defaultOpacity <= 100; defaultOpacity += 10)
            {
                OpacityList.Add(defaultOpacity.ToString() + " %");
            }
        }

        private void InitRelativeRatioList()
        {
            RelativeRatioList.Clear();
            for (int defaultRelativeRatioList = 10; defaultRelativeRatioList <= 100; defaultRelativeRatioList += 10)
            {
                RelativeRatioList.Add(defaultRelativeRatioList.ToString() + " %");
            }
        }

        private void InitLocationButtonMatrix()
        {
            GetLocationFromNumber.Clear();
            for (var temp = 0; temp <= 22; temp++)
            {
                GetLocationFromNumber.Add(temp.ToString(), true);
                if (temp % 10 == 2)
                {
                    temp += 7;
                }
            }
            int Num = (int)BackgroundInfo.BackgroundVertalign * 10 + (int)BackgroundInfo.BackgroundHorizalign;
            GetLocationFromNumber[Num.ToString()] = false;

        }

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

        public void ChangeLocation(object e)
        {
            string args = e as string;
            if (args != null)
            {
                BackgroundInfo.BackgroundVertalign = (C_Background_Vertalign)(int.Parse(args) / 10);
                BackgroundInfo.BackgroundHorizalign = (C_Background_Horizalign)(int.Parse(args) % 10);
                InitLocationButtonMatrix();
            }
        }

        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {
        }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
        }
    }
}