using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Text;
using System.Windows.Forms;
using System.Linq;

namespace AutoPekage
{
    public partial class Form1 : Form
    {

        public static string tempPath = Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), Path.Combine("AutoPackage", "tempfile"));
        //Dictionary<string, int>  
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            var dao = LiteDbHelper.Settings;
            if (Directory.Exists(tempPath) &&
                ((dao.AskAutoLoadFile && MessageBox.Show("发现临时目录存在文件，是否自动加载内容？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes) ||
                (!dao.AskAutoLoadFile && dao.AutoLoadFile == 1)))
            {
                var files = Directory.GetFiles(tempPath);
                foreach (var file in files)
                {
                    AddNewFile(file);
                }
            }
        }

        private void Form1_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                e.Effect = DragDropEffects.Link;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }

        private void Form1_DragDrop(object sender, DragEventArgs e)
        {
            var dropList = (System.Array)e.Data.GetData(DataFormats.FileDrop);
            foreach (var item in dropList)
            {
                string filePath = item.ToString();
                AddDropFile(filePath);
            } 
        }

        private void AddDropFile(string filePath)
        {
            FileInfo fi = new FileInfo(filePath);
            if (fi.Attributes == FileAttributes.Directory)
            {
                var files = Directory.EnumerateFiles(filePath, "*", SearchOption.AllDirectories);
                foreach (var file in files)
                {
                    AddDropFile(file);
                }
                return;
            }

            string extension = Path.GetExtension(filePath);
            if (extension.ToLower() == ".zip" || extension.ToLower() == ".rar" || extension.ToLower() == ".7z" || extension.ToLower() == ".gzip" || extension.ToLower() == ".tar")
            {
                ZipControl.NewFileDecompress += AddNewFile;
                //ZipControl.UnZip(filePath, "");
                ZipControl.FileWillDecompress += ZipControl_FileWillDecompress;
                ZipControl.UnCompress(filePath, tempPath);
                ZipControl.FileWillDecompress -= ZipControl_FileWillDecompress;
                ZipControl.NewFileDecompress -= AddNewFile;
            }
            else
            {
                var itemlist = lvFileList.Items.Cast<ListViewItem>().Where(x => Path.GetFileName(x.Tag as string) == Path.GetFileName(filePath));
                if (itemlist.Count() > 0)
                {
                    if (itemlist.First().Tag as string == filePath)
                    {
                        return;
                    }
                    else
                    {
                        if (MessageBox.Show(Path.GetFileName(filePath) + "已存在并且与目前列表中文件不同，是否替换？"
                            , "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                        {
                            AddNewFile(filePath);
                        }
                    }
                }
                else
                {
                    AddNewFile(filePath);
                }
                
            }
        }

        private void AddNewFile(string filePath)
        {
            var itemlist = lvFileList.Items.Cast<ListViewItem>().Where(x => Path.GetFileName(x.Tag as string) == Path.GetFileName(filePath));
            if (itemlist.Count() > 0)
            {
                itemlist.First().Tag = filePath;
            }
            else
            {
                ilFileList.Images.Add(GetIcon.GetFileIcon(filePath));
                string filename = Path.GetFileName(filePath);
                var item = new ListViewItem(filename);
                item.ImageIndex = ilFileList.Images.Count - 1;
                item.Tag = filePath;
                lvFileList.Items.Add(item);
            }
            
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            var dao = LiteDbHelper.Settings;
            if (Directory.Exists(tempPath) && 
                ((dao.AskAutoDeleteFile && MessageBox.Show("发现临时目录存在文件，是否删除？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)||
                (!dao.AskAutoDeleteFile && dao.AutoDeleteFile == 1)))
            {
                Directory.Delete(tempPath, true);
            }
        }

        private void cmsFileContextMenu_Opening(object sender, CancelEventArgs e)
        {
            bool showMenu = false;

            //要判断是否点击项，控件里至少要有一个项
            if (this.lvFileList.Items.Count > 0)
            {
                Point point = this.lvFileList.PointToClient(MousePosition);
                ListViewHitTestInfo hitTest = this.lvFileList.HitTest(point);

                if ( hitTest.Item != null)
                {//点击的不是列且不是空白区域
                    showMenu = true;
                }
            }

            e.Cancel = !showMenu;
        }

        private void 打开文件ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            
            foreach (ListViewItem item in lvFileList.SelectedItems)
            {
                Process.Start(item.Tag as string);
            }
        }

        private void 移除文件ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            foreach (ListViewItem item in lvFileList.SelectedItems)
            {
                lvFileList.Items.Remove(item);
            }
            
        }

        private void 打开所在目录ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            
            foreach (ListViewItem item in lvFileList.SelectedItems)
            {
                Process.Start("Explorer.exe", Path.GetDirectoryName(item.Tag as string));
            }
        }

        private void lvFileList_ItemCheck(object sender, ItemCheckEventArgs e)
        {

        }

        private void lvFileList_DoubleClick(object sender, EventArgs e)
        {
            //要判断是否点击项，控件里至少要有一个项
            if (this.lvFileList.Items.Count > 0)
            {
                Point point = this.lvFileList.PointToClient(MousePosition);
                ListViewHitTestInfo hitTest = this.lvFileList.HitTest(point);

                if (hitTest.Item != null)
                {//点击的不是列且不是空白区域
                    Process.Start(lvFileList.SelectedItems[0].Tag as string);
                }
            }
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            if (lvFileList.Items.Count == 0)
            {
                MessageBox.Show("打包前至少应该有一个文件", "自动打包", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            frmPackage package = new frmPackage(lvFileList.Items.Cast<ListViewItem>().Select(x => x.Tag as string).ToList());
            package.ShowDialog();
            
        }

        bool ZipControl_FileWillDecompress(string filePath)
        {
            if (lvFileList.Items.Cast<ListViewItem>().Where(x => Path.GetFileName(x.Tag as string) == Path.GetFileName(filePath)).Count() > 0)
            {
                if (MessageBox.Show(Path.GetFileName(filePath) + "已存在在列表中，是否覆盖？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            return true;
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void btnSettings_Click(object sender, EventArgs e)
        {
            new frmSettings().ShowDialog();
        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            //要判断是否点击项，控件里至少要有一个项
            if (this.lvFileList.SelectedItems.Count > 0)
            {
                if(e.Shift && e.KeyCode == Keys.Delete)
                {
                    if (MessageBox.Show("确实要同时删除此文件吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)
                    {
                        foreach (ListViewItem item in lvFileList.SelectedItems)
                        {
                            File.Delete(item.Tag as string);
                            lvFileList.Items.Remove(item);
                        }
                    }
                }
                else if (e.KeyCode == Keys.Delete)
                {
                    foreach (ListViewItem item in lvFileList.SelectedItems)
                    {
                        lvFileList.Items.Remove(item);
                    }
                }
            }
        }
    }
}