/*
  * Copyright (c) 2022 LG Electronics Inc.
  * SPDX-License-Identifier: LicenseRef-LGE-Proprietary
  */
using AuroraUIComponent.UserControls.KeyValueBase;
using System;
using System.Globalization;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

namespace AuroraUIComponent.UserControls
{
    /// <summary>
    /// Interaction logic for UCKeyValueAutoVertical.xaml
    ///
    /// UCKeyValue, UCKeyValueString, UCKeyValueBool 등을 DataType에 따라 자동으로 표시해주기 위한 wrapper class
    /// 지원 DataType : double, int, string, bool
    /// </summary>
    public partial class UCKeyValueAutoVertical : UCKeyValueNumber
    {
        public static readonly DependencyProperty DataTypeProperty
                       = DependencyProperty.Register(
                           nameof(DataType),
                           typeof(Type),
                           typeof(UCKeyValueAutoVertical),
                           new PropertyMetadata(null, OnDataTypeChanged));

        public Type DataType {
            get { return (Type)GetValue(DataTypeProperty); }
            set { SetValue(DataTypeProperty, value); }
        }

        private static void OnDataTypeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var control = d as UCKeyValueAutoVertical;
            control.UpdateFromDataType((Type)e.NewValue);
        }

        #region UCKeyValueString
        public static readonly DependencyProperty ValueTextProperty
               = DependencyProperty.Register(
                   nameof(ValueText),
                   typeof(string),
                   typeof(UCKeyValueAutoVertical),
                   new FrameworkPropertyMetadata(
                       "",
                       FrameworkPropertyMetadataOptions.BindsTwoWayByDefault
                   ));

        public string ValueText {
            get { return (string)GetValue(ValueTextProperty); }
            set { SetValue(ValueTextProperty, value); }
        }
        #endregion

        #region UCKeyValueCheckBox
        public static readonly DependencyProperty ValueBoolProperty
               = DependencyProperty.Register(
                   nameof(ValueBool),
                   typeof(bool),
                   typeof(UCKeyValueAutoVertical),
                   new FrameworkPropertyMetadata(
                       false,
                       FrameworkPropertyMetadataOptions.BindsTwoWayByDefault
                   ));

        public bool ValueBool {
            get { return (bool)GetValue(ValueBoolProperty); }
            set { SetValue(ValueBoolProperty, value); }
        }
        #endregion

        protected UCKeyValueVertical UCKeyValueInt;
        protected UCKeyValueVertical UCKeyValueDouble;
        protected UCKeyValueVerticalString UCKeyValueString;
        protected UCKeyValueVerticalCheckBox UCKeyValueBool;

        public void UpdateFromDataType(Type newValue)
        {
            if (newValue == typeof(double)) {
                cpValue.Content = UCKeyValueDouble;
            } else if (newValue == typeof(int)) {
                cpValue.Content = UCKeyValueInt;
            } else if (newValue == typeof(string)) {
                cpValue.Content = UCKeyValueString;
            } else if (newValue == typeof(bool)) {
                cpValue.Content = UCKeyValueBool;
            }
        }

        private void RegisterBindings(DependencyProperty prop)
        {
            Binding binding = new Binding(prop.ToString());
            binding.Source = this;
            if (prop != DecimalPlacesProperty) {
                UCKeyValueInt.SetBinding(prop, binding);
            }
            UCKeyValueDouble.SetBinding(prop, binding);
            UCKeyValueString.SetBinding(prop, binding);
            UCKeyValueBool.SetBinding(prop, binding);

        }

        public UCKeyValueAutoVertical() : base()
        {
            InitializeComponent();

            UCKeyValueInt = new UCKeyValueVertical();
            UCKeyValueDouble = new UCKeyValueVertical();
            UCKeyValueString = new UCKeyValueVerticalString();
            UCKeyValueBool = new UCKeyValueVerticalCheckBox();

            #region Binding Properties for each UC

            RegisterBindings(KeyTextProperty);
            RegisterBindings(KeyHorizontalAlignmentProperty);
            RegisterBindings(ValueHorizontalAlignmentProperty);
            RegisterBindings(KeyTextSizeProperty);
            RegisterBindings(ValueTextSizeProperty);
            RegisterBindings(KeyTextWidthProperty);
            RegisterBindings(ValueTextWidthProperty);
            RegisterBindings(KeyTextFgColorProperty);
            RegisterBindings(ValueTextFgColorProperty);
            RegisterBindings(KeyTextBgColorProperty);
            RegisterBindings(ValueTextBgColorProperty);
            RegisterBindings(IsReadOnlyProperty);
            RegisterBindings(DecimalPlacesProperty);
            RegisterBindings(UnitProperty);
            RegisterBindings(ShowKeypadProperty);

            // Value / ValueTextProperty
            Binding bindingValue = new Binding(ValueProperty.ToString());
            bindingValue.Source = this;
            UCKeyValueInt.SetBinding(ValueProperty, bindingValue);
            UCKeyValueDouble.SetBinding(ValueProperty, bindingValue);

            Binding bindingValueText = new Binding(ValueTextProperty.ToString());
            bindingValueText.Source = this;
            UCKeyValueString.SetBinding(UCKeyValueVerticalString.ValueTextProperty, bindingValueText);

            Binding bindingValueBool = new Binding(ValueBoolProperty.ToString());
            bindingValueBool.Source = this;
            UCKeyValueBool.SetBinding(UCKeyValueVerticalCheckBox.ValueBoolProperty, bindingValueBool);
            #endregion

            UCKeyValueDouble.TextValue.LostFocus += TextBoxOnLostFocus;

            cpValue.Content = UCKeyValueInt;
        }

        private void TextBoxOnLostFocus(object sender, RoutedEventArgs e)
        {
            Value = ParseString2Decimal(UCKeyValueDouble.TextValue.Text);
        }

        protected override void ChangeThousandSeparator(decimal value)
        {
            //change formatting based on this flag
            if (ThousandSeparator) {
                if (UCKeyValueDouble.TextValue.Text != null) {
                    UCKeyValueDouble.TextValue.Text = value.ToString("N", Culture);
                }
            } else {
                if (UCKeyValueDouble.TextValue.Text != null) {
                    UCKeyValueDouble.TextValue.Text = value.ToString($"F", Culture);
                }
            }
        }

        private void SetTextHidden(Grid grid)
        {
            // KeyText 가 없으므로, 해당 grid 의 width 를 0 으로 만든다
            if (grid.ColumnDefinitions.Count > 0) {
                grid.ColumnDefinitions[0].Width = new GridLength(0);
            }

            if (grid.RowDefinitions.Count > 0) {
                grid.RowDefinitions[0].Height = new GridLength(0);
            }
        }

        #region For UCKeyValueString & UCKeyValueCheckBox
        protected override void KeyTextChanged(string newValue)
        {
            if (string.IsNullOrEmpty(newValue)) {

                //SetTextHidden(UCKeyValueInt.GridParent);
                //SetTextHidden(UCKeyValueDouble.GridParent);
                SetTextHidden(UCKeyValueString.GridParent);
                SetTextHidden(UCKeyValueBool.GridParent);
            }
        }
        #endregion
    }
}