using AvalonDock.Controls;
using FastReport.Export.Dxf.Sections;
using InABox.Configuration;
using InABox.Core;
using InABox.Wpf;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace PRSDesktop;

/// <summary>
/// An <see cref="IPanel{T}"/> which wraps a <typeparamref name="TDashboard"/>, with a header. <typeparamref name="TDashboard"/>
/// must be an <see cref="IBasePanel"/>, so that it can act as a normal PRS panel.
/// </summary>
/// <remarks>
/// <see cref="IActionsDashboard"/> has no effect here, and instead, since <typeparamref name="TDashboard"/> must implement <see cref="IBasePanel"/>,
/// one should use <see cref="IBasePanel.CreateToolbarButtons(PRSDesktop.IPanelHost)"/> to create actions.
/// </remarks>
/// <typeparam name="TDashboard"></typeparam>
/// <typeparam name="TGroup"></typeparam>
/// <typeparam name="TProperties"></typeparam>
public class DashboardContainerPanel<TDashboard, TGroup, TProperties> : UserControl, IBasePanel
    where TDashboard : IDashboardWidget<TGroup, TProperties>, IBasePanel, new()
    where TGroup : DashboardWidgetGroup
    where TProperties : IUserConfigurationSettings, IDashboardProperties, new()
{
    public TDashboard Dashboard { get; set; }

    private StackPanel HeaderItemsLeft;
    private StackPanel HeaderItemsRight;

    public DashboardContainerPanel()
    {
        Dashboard = new TDashboard
        {
            Properties = new UserConfiguration<TProperties>().Load()
        };

        var border = new Border
        {
            BorderBrush = new SolidColorBrush(Colors.Gray),
            BorderThickness = new Thickness(0)
        };

        var grid = new Grid();
        grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
        grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Star) });

        var headerBorder = new Border
        {
            BorderBrush = new SolidColorBrush(Colors.Gray),
            BorderThickness = new Thickness(0.75),
            CornerRadius = new CornerRadius(5, 5, 0, 0),
            Background = new SolidColorBrush(Colors.WhiteSmoke)
        };

        var dock = new DockPanel
        {
            Background = new SolidColorBrush(Colors.Transparent)
        };

        HeaderItemsRight = new StackPanel
        {
            Margin = new Thickness(5),
            Orientation = Orientation.Horizontal
        };

        HeaderItemsLeft = new StackPanel
        {
            Margin = new Thickness(5),
            Orientation = Orientation.Horizontal
        };

        DockPanel.SetDock(HeaderItemsRight, Dock.Right);
        dock.Children.Add(HeaderItemsRight);
        DockPanel.SetDock(HeaderItemsLeft, Dock.Left);
        dock.Children.Add(HeaderItemsLeft);

        headerBorder.Child = dock;

        var content = new ContentControl
        {
            Margin = new Thickness(0, 2, 0, 0),
            Content = Dashboard
        };

        Grid.SetRow(headerBorder, 0);
        Grid.SetRow(content, 1);

        grid.Children.Add(headerBorder);
        grid.Children.Add(content);

        border.Child = grid;

        Content = border;

        if (Dashboard is IHeaderDashboard headerDashboard)
        {
            RefreshHeader(headerDashboard.Header);

            headerDashboard.Header.HeaderChanged += Header_HeaderChanged;
        }
    }

    private void RefreshHeader(DashboardHeader header)
    {
        if (HeaderItemsLeft.Children.Count > 0)
        {
            HeaderItemsLeft.Children.Clear();
        }
        if (HeaderItemsRight.Children.Count > 0)
        {
            HeaderItemsRight.Children.Clear();
        }

        foreach (var item in header.GetLeftElements())
        {
            HeaderItemsLeft.Children.Add(item);
        }
        foreach (var item in header.GetRightElements())
        {
            HeaderItemsRight.Children.Add(item);
        }
    }

    private void Header_HeaderChanged(DashboardHeader header)
    {
        RefreshHeader(header);
    }

    #region IBasePanel

    public bool IsReady { get => Dashboard.IsReady; set => Dashboard.IsReady = true; }

    public string SectionName => Dashboard.SectionName;

    public event DataModelUpdateEvent? OnUpdateDataModel
    {
        add => Dashboard.OnUpdateDataModel += value;
        remove => Dashboard.OnUpdateDataModel -= value;
    }

    public void CreateToolbarButtons(IPanelHost host)
    {
        Dashboard.CreateToolbarButtons(host);
    }

    public DataModel DataModel(Selection selection)
    {
        return Dashboard.DataModel(selection);
    }

    public void Heartbeat(TimeSpan time)
    {
        Dashboard.Heartbeat(time);
    }

    public void Refresh()
    {
        Dashboard.Refresh();
    }

    public Dictionary<string, object[]> Selected()
    {
        return Dashboard.Selected();
    }

    public void Setup()
    {
        Dashboard.Setup();
    }

    public void Shutdown(CancelEventArgs? cancel)
    {
        Dashboard.Shutdown(cancel);
        if(cancel?.Cancel != true)
        {
            new UserConfiguration<TProperties>().Save(Dashboard.Properties);
        }
    }

    #endregion
}