using AppLauncher.Models;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AppLauncher.Windows.Forms
{
    public partial class TileLayoutContainer : AUserControl
    {
        protected int collapseIncrement = 6;
        protected int expandIncrement = 8;
        protected TileGroupModel groupInfo = null;
        protected bool isAnimating = false;

        public TileLayoutContainer(TileGroupModel model) : base()
        {
            InitializeComponent();

            this.ContextMenuStrip = contextMenuStrip1;

            label1.TileGroupPanel = this;

            this.LoadModel(model);

            panel1.Resize += panel1_Resize;
        }

        protected override async void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            label1.Width = panel1.Width;

            this.Margin = new Padding(0, 0, 0, 0);
            this.Padding = new Padding(0, 0, 0, 10);
            //this.MaximumSize = new Size(panel1.Width, ExpandedHeight);
            //this.MinimumSize = new Size(panel1.Width, label1.Height);
            //this.Size = this.MaximumSize;
            this.Size = new Size(panel1.Width, this.ExpandedHeight);
        }

        private async void panel1_Resize(object sender, EventArgs e)
        {
            await this.InvalidateContainer();
        }

        public int CollapseHeight => label1.Height + panel1.CollapseHeight;

        public int ExpandedHeight => label1.Height + panel1.ExpandedHeight + this.Padding.Top + this.Padding.Bottom;

        public bool IsAnimating => isAnimating;

        public TileGroupModel Model
        {
            get
            {
                TileGroupModel rs = new TileGroupModel()
                {
                    Title = label1.TitleText,
                    GridSize = new Size(panel1.GridSize.X, panel1.GridSize.Y),
                    IsExpanded = label1.Checked,
                    IsExclusive = groupInfo.IsExclusive,
                    Items = panel1.Tiles
                };

                return rs;
            }
        }

        public FlowLayoutPanel FlowLayoutPanel
        {
            get
            {
                if (this.Parent == null)
                {
                    return null;
                }

                if (this.Parent.GetType() != typeof(FlowLayoutPanel))
                {
                    return null;
                }

                return this.Parent as FlowLayoutPanel;
            }
        }

        public async Task Collapse()
        {
            await Task.Run(() =>
            {
                if (isAnimating) return;

                isAnimating = true;

                while (this.Height > this.CollapseHeight)
                {
                    if (this.InvokeRequired)
                    {
                        this.Invoke(new MethodInvoker(() => {
                            this.Height -= collapseIncrement;
                        }));
                    }
                    else
                    {
                        this.Height -= collapseIncrement;
                    }

                    Thread.Sleep(10);
                }

                isAnimating = false;
            });
        }

        public async Task CollapseNow()
        {
            await Task.Run(() =>
            {
                if (isAnimating) return;

                isAnimating = true;

                if (this.InvokeRequired)
                {
                    this.Invoke(new MethodInvoker(() => {
                        this.Height = this.CollapseHeight;
                    }));
                }
                else
                {
                    this.Height = this.CollapseHeight;
                }

                isAnimating = false;
            });
        }

        public async Task Expand()
        {
            await Task.Run(() =>
            {
                if (isAnimating) return;

                isAnimating = true;

                while (this.Height < this.ExpandedHeight)
                {
                    if (this.InvokeRequired)
                    {
                        this.Invoke(new MethodInvoker(() => {
                            this.Height += expandIncrement;
                            this.Invalidate();
                        }));
                    }
                    else
                    {
                        this.Height += expandIncrement;
                        this.Invalidate();
                    }

                    Thread.Sleep(10);
                }

                isAnimating = false;
            });
        }

        public async Task InvalidateContainer(bool animate = true)
        {
            if (this.IsAnimating)
            {
                return;
            }

            if (label1.Checked)
            {
                await this.Expand();
            }
            else
            {
                if (animate)
                {
                    await this.Collapse();
                }
                else
                {
                    await this.CollapseNow();
                }
            }
        }

        public void AddGroup()
        {
            if (this.FlowLayoutPanel == null)
            {
                return;
            }

            this.FlowLayoutPanel.Controls.Add(new TileLayoutContainer(new TileGroupModel()
            {
                Title = "New Group",
                GridSize = new Size(8, 1)
            }));
        }

        public void AddRow()
        {
            panel1.SetGridSize(groupInfo.GridSize.Width, (groupInfo.GridSize.Height + 1));
        }

        public void EditGroup()
        {
            EditGroupForm editForm = new EditGroupForm(this);
            editForm.ShowDialog();
        }

        public void LoadModel(TileGroupModel model, bool loadTiles = true)
        {
            groupInfo = model;

            label1.TitleText = groupInfo.Title;
            panel1.SetGridSize(groupInfo.GridSize.Width, groupInfo.GridSize.Height);
            this.Width = panel1.Width;

            label1.Checked = groupInfo.IsExpanded;

            if (loadTiles)
            {
                panel1.LoadTiles(model.Items);
            }
        }

        public void MoveTop()
        {
            if (this.FlowLayoutPanel == null)
            {
                return;
            }

            this.FlowLayoutPanel.Controls.SetChildIndex(this, 0);
        }

        public void MoveUp()
        {
            if (this.FlowLayoutPanel == null)
            {
                return;
            }

            int pos = this.FlowLayoutPanel.Controls.GetChildIndex(this);
            if (pos <= 0)
            {
                return;
            }

            this.FlowLayoutPanel.Controls.SetChildIndex(this, (pos - 1));
        }

        public void MoveDown()
        {
            if (this.FlowLayoutPanel == null)
            {
                return;
            }

            int pos = this.FlowLayoutPanel.Controls.GetChildIndex(this);
            if (pos >= (this.FlowLayoutPanel.Controls.Count - 1))
            {
                return;
            }

            this.FlowLayoutPanel.Controls.SetChildIndex(this, (pos + 1));
        }

        public void MoveBottom()
        {
            if (this.FlowLayoutPanel == null)
            {
                return;
            }

            this.FlowLayoutPanel.Controls.SetChildIndex(this, (this.FlowLayoutPanel.Controls.Count - 1));
        }

        public void Remove()
        {
            if (this.FlowLayoutPanel == null)
            {
                return;
            }

            this.FlowLayoutPanel.Controls.Remove(this);
        }

        private void addToolStripMenuItem_Click(object sender, EventArgs e)
        {
            AddTileForm addForm = new AddTileForm(panel1);
            addForm.ShowDialog();
        }

    }
}