using BrightIdeasSoftware;
using ObjectListViewDemo;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using ryCommon;
using System.Collections;
using System.Drawing.Drawing2D;
using WeifenLuo.WinFormsUI.Docking;
using 开发辅助工具.Tools.SmartEditor;
using 开发辅助工具.Manager;
using Newtonsoft.Json.Linq;
using 开发辅助工具.Controls;

namespace SuperDesign.Tools.SmartEditor
{
    public partial class FrmFileBrowser : DockContent
    {
        public FrmFileBrowser()
        {
            InitializeComponent();
            SetupColumns();
            SetupTree();
            TreeListView.TreeRenderer renderer = this.treeListView.TreeColumnRenderer;
            renderer.LinePen = new Pen(Color.Firebrick, 0.5f)
            {
                DashStyle = DashStyle.Dot
            };
        }

        private void Drag_ElevatedDragDrop(object sender, ElevatedDragDropArgs e)
        {
            if (e.Files.Count == 1)
            {
                if (System.IO.Directory.Exists(e.Files[0]))
                {
                    Add(e.Files[0]);
                }
            }
        }

        private void SetupColumns()
        {
            // The column setup here is identical to the File Explorer example tab --
            // nothing specific to the TreeListView. 

            // The only difference is that we don't setup anything to do with grouping,
            // since TreeListViews can't show groups.

            SysImageListHelper helper = new SysImageListHelper(this.treeListView);
            this.olvColumnName.ImageGetter = delegate (object x) {
                return helper.GetImageIndex(((MyFileSystemInfo)x).FullName);
            };

            // Get the size of the file system entity. 
            // Folders and errors are represented as negative numbers
            this.olvColumnSize.AspectGetter = delegate (object x) {
                MyFileSystemInfo myFileSystemInfo = (MyFileSystemInfo)x;

                if (myFileSystemInfo.IsDirectory)
                    return (long)-1;

                try
                {
                    return myFileSystemInfo.Length;
                }
                catch (System.IO.FileNotFoundException)
                {
                    // Mono 1.2.6 throws this for hidden files
                    return (long)-2;
                }
            };

            // Show the size of files as GB, MB and KBs. By returning the actual
            // size in the AspectGetter, and doing the conversion in the 
            // AspectToStringConverter, sorting on this column will work off the
            // actual sizes, rather than the formatted string.
            this.olvColumnSize.AspectToStringConverter = delegate (object rowdata, object x) {
                long sizeInBytes = (long)x;
                if (sizeInBytes < 0) // folder or error
                    return "";
                return RyFiles.GetFileSizeStr(sizeInBytes);
            };

            // Show the system description for this object
            this.olvColumnFileType.AspectGetter = delegate (object x) {
                return ShellUtilities.GetFileType(((MyFileSystemInfo)x).FullName);
            };
        }
        private void SetupTree()
        {

            // TreeListView require two delegates:
            // 1. CanExpandGetter - Can a particular model be expanded?
            // 2. ChildrenGetter - Once the CanExpandGetter returns true, ChildrenGetter should return the list of children

            // CanExpandGetter is called very often! It must be very fast.

            this.treeListView.CanExpandGetter = delegate (object x) {
                return ((MyFileSystemInfo)x).IsDirectory;
            };

            // We just want to get the children of the given directory.
            // This becomes a little complicated when we can't (for whatever reason). We need to report the error 
            // to the user, but we can't just call MessageBox.Show() directly, since that would stall the UI thread
            // leaving the tree in a potentially undefined state (not good). We also don't want to keep trying to
            // get the contents of the given directory if the tree is refreshed. To get around the first problem,
            // we immediately return an empty list of children and use BeginInvoke to show the MessageBox at the 
            // earliest opportunity. We get around the second problem by collapsing the branch again, so it's children
            // will not be fetched when the tree is refreshed. The user could still explicitly unroll it again --
            // that's their problem :)
            this.treeListView.ChildrenGetter = delegate (object x) {
                try
                {
                    return ((MyFileSystemInfo)x).GetFileSystemInfos();
                }
                catch (UnauthorizedAccessException ex)
                {
                    this.BeginInvoke((MethodInvoker)delegate () {
                        this.treeListView.Collapse(x);
                        MessageBox.Show(this, ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                    });
                    return new ArrayList();
                }
            };

            // Once those two delegates are in place, the TreeListView starts working
            // after setting the Roots property.
            var WorkArea = Itrycn_Db.GetSetting("WorkArea", "");
            JArray jarr = WorkArea.Length == 0 ? new JArray() : JArray.Parse(WorkArea);
            for (int i = 0; i < jarr.Count; i++)
            {
                var item = jarr[i];
                roots.Add(new MyFileSystemInfo(new DirectoryInfo(item["path"].ToString()), item["name"].ToString()));
            }
            this.treeListView.Roots = roots;
        }

        readonly List<MyFileSystemInfo> roots = new List<MyFileSystemInfo>();
        private void TreeListView_ItemActivate(object sender, EventArgs e)
        {
            Object model = this.treeListView.SelectedObject;
            if (model != null)
                this.treeListView.ToggleExpansion(model);
        }

        private void TreeListView_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            MyFileSystemInfo model = (MyFileSystemInfo)this.treeListView.SelectedObject;
            if (model != null)
            {
                if (model.IsDirectory) { return; }
                if (model.Length >= 1024*1024 * 20)
                {
                    MessageBox.Show("不支持打开超过20M的文本。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    return;
                }
                FrmMainEditor.MainEditor.OpenFile(model.FullName);
            }
        }
        public void Add(string path)
        {
            var dir_path = path;
            var WorkArea = Itrycn_Db.GetSetting("WorkArea", "");
            JArray jarr = WorkArea.Length == 0 ? new JArray() : JArray.Parse(WorkArea);
            for (int i = jarr.Count - 1; i >= 0; i--)
            {
                var item = jarr[i];
                if (item["path"].ToString().ToLower() == dir_path.ToLower())
                {
                    MessageBox.Show("当前文件夹已存在", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    return;
                }
            }
            JObject jo = new JObject
                {
                    { "name", System.IO.Path.GetFileName(dir_path) },
                    { "path", dir_path }
                };
            jarr.Add(jo);
            Itrycn_Db.SetSetting("WorkArea", jarr.ToString());
            roots.Add(new MyFileSystemInfo(new DirectoryInfo(dir_path), System.IO.Path.GetFileName(dir_path)));
            this.treeListView.Roots = roots;
        }
        private void 添加工作区ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if(folderBrowserDialog1.ShowDialog()== DialogResult.OK)
            {
                var dir_path = folderBrowserDialog1.SelectedPath;
                Add(dir_path);
            }
        }

        private void 移除工作区ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MyFileSystemInfo model = (MyFileSystemInfo)this.treeListView.SelectedObject;
            if (model == null) { return; }
            if (treeListView.GetParent(model)==null)
            {
                switch (MessageBox.Show("是否要删除工作区？", "询问", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2))
                {
                    case DialogResult.No:
                        return;
                }
                var WorkArea = Itrycn_Db.GetSetting("WorkArea", "");
                JArray jarr = WorkArea.Length == 0 ? new JArray() : JArray.Parse(WorkArea);
                for (int i = jarr.Count-1; i>=0; i--)
                {
                    var item = jarr[i];
                    if (item["path"].ToString().ToLower()== model.FullName.ToLower())
                    {
                        jarr.Remove(item);
                    }
                }
                roots.Remove(model);
                Itrycn_Db.SetSetting("WorkArea", jarr.ToString());
                treeListView.RemoveObject(model);
            }
        }

        private void ContextMenuStrip1_Opening(object sender, CancelEventArgs e)
        {
            MyFileSystemInfo model = (MyFileSystemInfo)this.treeListView.SelectedObject;
            if (model == null) { 重命名ToolStripMenuItem.Enabled = false; 移除工作区ToolStripMenuItem.Enabled = false;return; }
            if (treeListView.GetParent(model) != null)
            {
                重命名ToolStripMenuItem.Enabled = false;
                移除工作区ToolStripMenuItem.Enabled = false; return;
            }
            重命名ToolStripMenuItem.Enabled = true;
            移除工作区ToolStripMenuItem.Enabled = true;
        }

        private void 重命名ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MyFileSystemInfo model = (MyFileSystemInfo)this.treeListView.SelectedObject;
            if (model == null) { return; }
            if (treeListView.GetParent(model) == null)
            {
                FrmTitle frm = new FrmTitle();
                frm.TxtTitle.Text = model.Name;
                frm.Text = "请输入重命名的名称";
                if (frm.ShowDialog() == DialogResult.OK)
                {
                    var WorkArea = Itrycn_Db.GetSetting("WorkArea", "");
                    JArray jarr = WorkArea.Length == 0 ? new JArray() : JArray.Parse(WorkArea);
                    for (int i = jarr.Count - 1; i >= 0; i--)
                    {
                        var item = jarr[i];
                        if (item["path"].ToString().ToLower() == model.FullName.ToLower())
                        {
                            item["name"] = frm.TxtTitle.Text;
                            model.Name = frm.TxtTitle.Text;
                        }
                    }
                    Itrycn_Db.SetSetting("WorkArea", jarr.ToString());
                    treeListView.RefreshObject(model);
                }
                frm.Dispose();
            }
        }

        private void FrmFileBrowser_Load(object sender, EventArgs e)
        {
            treeListView.IsSimpleDragSource = true;
        }

        private void FrmFileBrowser_FormClosing(object sender, FormClosingEventArgs e)
        {
            //drag.ElevatedDragDrop -= Drag_ElevatedDragDrop;
        }

        private void TreeListView_Dropped(object sender, OlvDropEventArgs e)
        {

        }

        private void TreeListView_DragDrop(object sender, DragEventArgs e)
        {
            string[] s = (string[])e.Data.GetData(DataFormats.FileDrop, false);
            if(s!=null && s.Length==1)
            {
                Add(s[0]);
            }
        }

        private void TreeListView_DragOver(object sender, DragEventArgs e)
        {
        }

        private void TreeListView_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                e.Effect = DragDropEffects.All;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }
        public void GotoPath(string path)
        {
            if (path.Length == 0) { return; }
            var isexist = false;
            MyFileSystemInfo find_item = null;
            for (int i = 0; i < roots.Count; i++)
            {
                var root = roots[i];
                if(path.IndexOfEx(root.FullName)==0)
                {
                    treeListView.Expand(root);
                    Find(root);
                    if(isexist)
                    {
                        break;
                    }
                    void Find(MyFileSystemInfo _item)
                    {
                        if (_item.FullName.ToLower() == path.ToLower())
                        {
                            isexist = true;
                            find_item = _item;
                            return;
                        }
                        var list = treeListView.GetChildren(_item);
                        foreach (var _file in list)
                        {
                            var file = (MyFileSystemInfo)_file;
                            if (file.IsDirectory)
                            {
                                
                                if (path.IndexOfEx(file.FullName) == 0)
                                {
                                    treeListView.Expand(file);
                                    if (path.Length == file.FullName.Length)
                                    {
                                        isexist = true;
                                        find_item = file;
                                        break;
                                    }
                                    else
                                    {
                                        Find(file);
                                        continue;
                                    }
                                }
                                else { continue; }
                            }
                            if (file.FullName.ToLower() == path.ToLower())
                            {
                                isexist = true;
                                find_item = file;
                                break;
                            }
                        }
                    }
                }
            }
            if (isexist)
            {
                treeListView.EnsureModelVisible(find_item);
                //var aa= treeListView.SelectedObject==find_item;
                treeListView.Expand(find_item);
                treeListView.SelectedObject = find_item;
                //treeListView.Expand(find_item);
            }
        }
        private void 重命名ToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            FrmTitle frm = new FrmTitle();
            frm.TxtTitle.Text = Text;
            frm.Text = "请输入重命名的工作区名称";
            if (frm.ShowDialog() == DialogResult.OK)
            {
                Text = frm.TxtTitle.Text;
            }
            frm.Dispose();
        }
    }
}