using System;
using System.Reflection;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.Primitives;
using Avalonia.Data;
using Avalonia.Input;
using Avalonia.Interactivity;
using Avalonia.Layout;
using Avalonia.Markup.Xaml;
using Avalonia.Media;
using DispenserCommon.Atrributes;
using DispenserCommon.Utils;
using DispenserHal.Camera.DTO;
using DispenserUI.ViewModels.Components;
using DispenserUI.ViewModels.DTO;
using Masuit.Tools.Reflection;
using Control = Avalonia.Controls.Control;
using Cursor = Avalonia.Input.Cursor;
using HorizontalAlignment = Avalonia.Layout.HorizontalAlignment;
using Orientation = Avalonia.Layout.Orientation;
using UserControl = Avalonia.Controls.UserControl;

namespace DispenserUI.Views.Controls;

public partial class CameraParamsEditor : UserControl
{
    public CameraParamsEditor()
    {
        DataContext = ViewModel;
        InitializeComponent();
        ViewModel.ReloadCameraParams();
    }

    public CameraParamsVM ViewModel { get; } = ServiceLocator.GetService<CameraParamsVM>();


    private void InitializeComponent()
    {
        AvaloniaXamlLoader.Load(this);
        CameraParamsPanel = this.Get<StackPanel>("CameraParamsPanel");
        RenderControls();
    }

    /// <summary>
    ///     根据获取到的参数，渲染参数界面
    /// </summary>
    private void RenderControls()
    {
        var properties = typeof(CameraParams).GetProperties();

        foreach (var property in properties)
        {
            var propertyType = property.PropertyType;
            switch (propertyType.Name)
            {
                case nameof(StringValue):
                    CameraParamsPanel.Children.Add(RenderStringParams(property));
                    break;
                case nameof(IntValue):
                    CameraParamsPanel.Children.Add(RenderIntParams(property));
                    break;
                case nameof(Boolean):
                    CameraParamsPanel.Children.Add(RenderBooleanParams(property));
                    break;
                case nameof(FloatValue):
                    CameraParamsPanel.Children.Add(RenderFloatParams(property));
                    break;
                case nameof(EnumValue):
                    CameraParamsPanel.Children.Add(RenderEnumParams(property));
                    break;
            }
        }

        // 刷新页面
        InvalidateVisual();
    }

    /// <summary>
    ///     渲染字符串参数
    /// </summary>
    /// <param name="property"></param>
    private Control RenderStringParams(PropertyInfo property)
    {
        var panel = new StackPanel
        {
            Orientation = Orientation.Horizontal,
            Height = 50,
            VerticalAlignment = VerticalAlignment.Center
        };

        var name = new TextBlock
        {
            Text = property.GetDescription(),
            Margin = new Thickness(0, 0, 10, 0),
            TextWrapping = TextWrapping.Wrap,
            Width = 80,
            HorizontalAlignment = HorizontalAlignment.Left,
            VerticalAlignment = VerticalAlignment.Center
        };

        var value = new TextBlock
        {
            Name = property.Name,
            Width = 250,
            HorizontalAlignment = HorizontalAlignment.Left,
            VerticalAlignment = VerticalAlignment.Center
        };

        value.Bind(TextBlock.TextProperty, new Binding(property.Name + ".CurValue"));

        panel.Children.Add(name);
        panel.Children.Add(value);
        return panel;
    }


    /// <summary>
    ///     渲染数字参数
    /// </summary>
    /// <param name="property"></param>
    private Control RenderIntParams(PropertyInfo property)
    {
        var panel = new StackPanel
        {
            Orientation = Orientation.Horizontal,
            Height = 50,
            VerticalAlignment = VerticalAlignment.Center
        };

        var name = new TextBlock
        {
            Text = property.GetDescription(),
            Margin = new Thickness(0, 0, 10, 0),
            Width = 80,
            TextWrapping = TextWrapping.Wrap,
            HorizontalAlignment = HorizontalAlignment.Left,
            VerticalAlignment = VerticalAlignment.Center
        };

        var grid = new Grid
        {
            Width = 250,
            HorizontalAlignment = HorizontalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center,
            ColumnDefinitions = new ColumnDefinitions("*,60")
        };

        var slider = new Slider
        {
            Name = property.Name,
            Background = Brushes.Gray,
            Cursor = new Cursor(StandardCursorType.Hand),
            HorizontalAlignment = HorizontalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center
        };

        slider.Bind(RangeBase.ValueProperty, new Binding(property.Name + ".CurValue")
        {
            Mode = BindingMode.TwoWay
        });

        slider.Bind(RangeBase.MinimumProperty, new Binding(property.Name + ".Min")
        {
            Mode = BindingMode.TwoWay
        });

        var pro = property.GetCustomAttribute<Property>();

        if (pro != null && pro.Max != 0)
        {
            slider.Maximum = pro.Max;
        }
        else
        {
            slider.Bind(RangeBase.MaximumProperty, new Binding(property.Name + ".Max")
            {
                Mode = BindingMode.TwoWay
            });
        }

        slider.ValueChanged += OnSliderValueChanged;

        var value = new NumericUpDown
        {
            Name = property.Name,
            Margin = new Thickness(10, 0, 0, 0),
            Width = 60,
            Height = 30,
            ShowButtonSpinner = false,
            FormatString = "F0",
            HorizontalAlignment = HorizontalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center
        };

        value.Bind(NumericUpDown.ValueProperty, new Binding(property.Name + ".CurValue")
        {
            Mode = BindingMode.TwoWay
        });

        value.ValueChanged += OnNumericValueChanged;


        grid.Children.Add(slider);
        grid.Children.Add(value);
        Grid.SetColumn(slider, 0);
        Grid.SetColumn(value, 1);

        panel.Children.Add(name);
        panel.Children.Add(grid);
        return panel;
    }


    /// <summary>
    ///     渲染bool参数
    /// </summary>
    /// <param name="property"></param>
    private Control RenderBooleanParams(PropertyInfo property)
    {
        var panel = new StackPanel
        {
            Orientation = Orientation.Horizontal,
            Height = 50,
            VerticalAlignment = VerticalAlignment.Center
        };

        var name = new TextBlock
        {
            Text = property.GetDescription(),
            Margin = new Thickness(0, 0, 10, 0),
            Width = 80,
            TextWrapping = TextWrapping.Wrap,
            HorizontalAlignment = HorizontalAlignment.Left,
            VerticalAlignment = VerticalAlignment.Center
        };

        var value = new ToggleSwitch
        {
            Name = property.Name,
            OnContent = "开启",
            OffContent = "关闭",
            Cursor = new Cursor(StandardCursorType.Hand),
            HorizontalAlignment = HorizontalAlignment.Right,
            HorizontalContentAlignment = HorizontalAlignment.Center,
            VerticalContentAlignment = VerticalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center
        };

        value.Bind(ToggleButton.IsCheckedProperty, new Binding(property.Name)
        {
            Mode = BindingMode.TwoWay
        });

        value.IsCheckedChanged += OnToggleSwitchChanged;

        panel.Children.Add(name);
        panel.Children.Add(value);
        return panel;
    }


    /// <summary>
    ///     渲染浮点型参数
    /// </summary>
    /// <param name="property"></param>
    private Control RenderFloatParams(PropertyInfo property)
    {
        var panel = new StackPanel
        {
            Orientation = Orientation.Horizontal,
            Height = 50,
            VerticalAlignment = VerticalAlignment.Center
        };

        var name = new TextBlock
        {
            Text = property.GetDescription(),
            Margin = new Thickness(0, 0, 10, 0),
            Width = 80,
            TextWrapping = TextWrapping.Wrap,
            HorizontalAlignment = HorizontalAlignment.Left,
            VerticalAlignment = VerticalAlignment.Center
        };

        var grid = new Grid
        {
            Width = 250,
            HorizontalAlignment = HorizontalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center,
            ColumnDefinitions = new ColumnDefinitions("*,60")
        };

        var slider = new Slider
        {
            Name = property.Name,
            Background = Brushes.Gray,
            Cursor = new Cursor(StandardCursorType.Hand),
            VerticalAlignment = VerticalAlignment.Center
        };


        slider.Bind(RangeBase.ValueProperty, new Binding(property.Name + ".CurValue")
        {
            Mode = BindingMode.TwoWay
        });

        slider.Bind(RangeBase.MinimumProperty, new Binding(property.Name + ".Min")
        {
            Mode = BindingMode.TwoWay
        });

        var pro = property.GetCustomAttribute<Property>();

        if (pro != null && pro.Max != 0)
        {
            slider.Maximum = pro.Max;
        }
        else
        {
            slider.Bind(RangeBase.MaximumProperty, new Binding(property.Name + ".Max")
            {
                Mode = BindingMode.TwoWay
            });
        }

        slider.ValueChanged += OnSliderValueChanged;


        var value = new NumericUpDown
        {
            Name = property.Name,
            Margin = new Thickness(10, 0, 0, 0),
            Width = 60,
            Height = 30,
            ShowButtonSpinner = false,
            FormatString = "0.###",
            HorizontalAlignment = HorizontalAlignment.Center,
            VerticalAlignment = VerticalAlignment.Center
        };

        value.Bind(NumericUpDown.ValueProperty, new Binding(property.Name + ".CurValue")
        {
            Mode = BindingMode.TwoWay
        });

        value.ValueChanged += OnNumericValueChanged;

        grid.Children.Add(slider);
        grid.Children.Add(value);
        Grid.SetColumn(slider, 0);
        Grid.SetColumn(value, 1);

        panel.Children.Add(name);
        panel.Children.Add(grid);
        return panel;
    }


    /// <summary>
    ///     渲染枚举类型参数
    /// </summary>
    /// <param name="property"></param>
    private Control RenderEnumParams(PropertyInfo property)
    {
        var panel = new StackPanel
        {
            Orientation = Orientation.Horizontal,
            Height = 50,
            VerticalAlignment = VerticalAlignment.Center
        };

        var name = new TextBlock
        {
            Text = property.GetDescription(),
            Margin = new Thickness(0, 0, 10, 0),
            Width = 80,
            TextWrapping = TextWrapping.Wrap,
            HorizontalAlignment = HorizontalAlignment.Left,
            VerticalAlignment = VerticalAlignment.Center
        };

        var value = new ComboBox
        {
            Name = property.Name,
            Width = 250,
            AutoScrollToSelectedItem = true
        };

        value.Bind(ItemsControl.ItemsSourceProperty, new Binding(property.Name + ".Labels")
        {
            Mode = BindingMode.TwoWay
        });

        value.Bind(SelectingItemsControl.SelectedIndexProperty, new Binding(property.Name + ".CurIndex")
        {
            Mode = BindingMode.TwoWay
        });

        value.SelectionChanged += OnSelectionChanged;

        panel.Children.Add(name);
        panel.Children.Add(value);
        return panel;
    }

    /// <summary>
    ///     当选择框发生变化时
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
    {
        if (sender is ComboBox { IsDropDownOpen: true } comboBox)
        {
            var property = comboBox.Name;
            var value = comboBox.SelectedIndex;
            ViewModel.UpdateCameraParams(property, value);
        }
    }

    /// <summary>
    ///     当输入框发生变化时
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void OnNumericValueChanged(object? sender, RoutedEventArgs e)
    {
        if (sender is NumericUpDown { IsKeyboardFocusWithin: true } numeric)
        {
            var property = numeric.Name;
            var value = numeric.Value;
            ViewModel.UpdateCameraParams(property, value);
        }
    }

    /// <summary>
    ///     当滑动条发生变化时
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void OnSliderValueChanged(object? sender, RoutedEventArgs e)
    {
        if (sender is Slider { IsFocused: true } slider)
        {
            var property = slider.Name;
            var value = slider.Value;
            ViewModel.UpdateCameraParams(property, value);
        }
    }

    /// <summary>
    ///     当开关发生变化时
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void OnToggleSwitchChanged(object? sender, RoutedEventArgs e)
    {
        if (sender is ToggleButton { IsFocused: true } toggleButton)
        {
            var property = toggleButton.Name;
            var value = toggleButton.IsChecked;
            ViewModel.UpdateCameraParams(property, value);
        }
    }
}