using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection.Emit;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;

namespace Archives_Center
{
    public partial class backups : Form
    {
        string Password = "fbHQb7L9ODdO9pyPB4cDaMtiW7AgYKJLmQb7FewTiJZhyQwzCJucVf4scvQt7R6b";
        public backups()
        {
            InitializeComponent();
            listView1.View = View.Details;
            listView1.Columns.Add("备份时间", 215);
            listView1.Columns.Add("大小(MB)", 65);
            listView1.Columns.Add("占比(%)", 60);
            listView1.Items.Clear();
            DirectoryInfo dirInfo = new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\");
            DirectoryInfo[] subDirs = dirInfo.GetDirectories();
            long totalSize = subDirs.Sum(d => GetDirectorySize(d));
            foreach (DirectoryInfo dir in subDirs)
            {
                long dirSize = GetDirectorySize(dir);
                double dirSizeMB = dirSize / (1024.0 * 1024.0);
                double percentage = totalSize > 0 ? (dirSize * 100.0 / totalSize) : 0;
                ListViewItem item = new ListViewItem(new string[]
                {
                    dir.Name,
                    dirSizeMB.ToString("F2"),
                    percentage.ToString("F2")
                });
                listView1.Items.Add(item);
            }
            if (listView1.Items.Count > 0) button3.Enabled = true;
            else button3.Enabled = false;
            label2.Text = "全部备份文件大小：" + GDL(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\").ToString() + "MB";
        }

        private long GetDirectorySize(DirectoryInfo directoryInfo)
        {
            long size = 0;
            FileInfo[] files = directoryInfo.GetFiles();
            size += files.Sum(file => file.Length);
            DirectoryInfo[] subDirs = directoryInfo.GetDirectories();
            size += subDirs.Sum(dir => GetDirectorySize(dir));
            return size;
        }

        private static long GDL(string dirPath)
        {
            long len = 0;
            DirectoryInfo dir = new DirectoryInfo(dirPath);
            foreach (FileInfo file in dir.GetFiles())
            {
                len += file.Length;
            }
            DirectoryInfo[] directoryInfos = dir.GetDirectories();
            if(directoryInfos.Length > 0)
            {
                for(int i = 0;i < directoryInfos.Length; i++)
                {
                    len +=
                        GDL(directoryInfos[i].FullName);
                }
            }
            long TTsize = len / (1024 * 1024);
            string TT = TTsize.ToString();
            return len;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string T = DateTime.Now.ToString("yyyy'.'MM'.'dd'T'HH'.'mm'.'ss'.'fffffffzz");

            SevenZipHelper.CreateEncryptedZip(Path.GetTempPath() + @"ArchivesCenter\Data\", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted", Password);
            string folderToDelete = Path.GetTempPath() + @"ArchivesCenter";
            DeleteFolderWithAdminRights.DeleteFolder(folderToDelete);
            Directory.CreateDirectory(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + T);
            if (File.Exists(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Users.encrypted"))
                File.Copy(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Users.encrypted", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + T + @"\Users.encrypted");
            if (File.Exists(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted"))
                File.Copy(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + T + @"\Data.encrypted");
            File.Delete(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Users.encrypted");
            File.Delete(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted");
            File.Copy(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + listView1.SelectedItems[0].Text + @"\Users.encrypted", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Users.encrypted");
            File.Copy(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + listView1.SelectedItems[0].Text + @"\Data.encrypted", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted");
            listView1.Items.Clear();
            DirectoryInfo dirInfo = new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\");
            DirectoryInfo[] subDirs = dirInfo.GetDirectories();
            long totalSize = subDirs.Sum(d => GetDirectorySize(d));
            foreach (DirectoryInfo dir in subDirs)
            {
                long dirSize = GetDirectorySize(dir);
                double dirSizeMB = dirSize / (1024.0 * 1024.0);
                double percentage = totalSize > 0 ? (dirSize * 100.0 / totalSize) : 0;
                ListViewItem item = new ListViewItem(new string[]
                {
                    dir.Name,
                    dirSizeMB.ToString("F2"),
                    percentage.ToString("F2")
                });
                listView1.Items.Add(item);
            }
            if (listView1.Items.Count > 0) button3.Enabled = true;
            else button3.Enabled = false;
            label2.Text = "全部备份文件大小：" + GDL(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\").ToString() + "MB";
            MessageBox.Show("还原操作已成功执行，立即重启", "Archives Center", MessageBoxButtons.OK, MessageBoxIcon.Information);
            DeleteFolderWithAdminRights.DeleteFolder(Path.GetTempPath() + @"ArchivesCenter");
            Environment.Exit(0);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("此操作不可逆，确认删除此备份？", "删除确认", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
            {
                if (MessageBox.Show("此操作不可逆，确认删除此备份？\n这是最后一次确认", "二次删除确认", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation) == DialogResult.OK)
                {
                    Directory.Delete(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + listView1.SelectedItems[0].Text, true);
                    listView1.Items.Clear();
                    DirectoryInfo dirInfo = new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\");
                    DirectoryInfo[] subDirs = dirInfo.GetDirectories();
                    long totalSize = subDirs.Sum(d => GetDirectorySize(d));
                    foreach (DirectoryInfo dir in subDirs)
                    {
                        long dirSize = GetDirectorySize(dir);
                        double dirSizeMB = dirSize / (1024.0 * 1024.0);
                        double percentage = totalSize > 0 ? (dirSize * 100.0 / totalSize) : 0;
                        ListViewItem item = new ListViewItem(new string[]
                        {
                    dir.Name,
                    dirSizeMB.ToString("F2"),
                    percentage.ToString("F2")
                        });
                        listView1.Items.Add(item);
                    }
                    if (listView1.Items.Count > 0) button3.Enabled = true;
                    else button3.Enabled = false;
                    button1.Enabled = false;
                    button2.Enabled = false;
                }
            }
            label2.Text = "全部备份文件大小：" + GDL(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\").ToString() + "MB";
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("此操作不可逆，确认删除全部备份？", "删除确认", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
            {
                if (MessageBox.Show("此操作不可逆，确认删除全部备份？\n这是最后一次确认", "二次删除确认", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation) == DialogResult.OK)
                {
                    Directory.Delete(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\", true);
                    Directory.CreateDirectory(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\");
                    listView1.Items.Clear();
                    DirectoryInfo dirInfo = new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\");
                    DirectoryInfo[] subDirs = dirInfo.GetDirectories();
                    long totalSize = subDirs.Sum(d => GetDirectorySize(d));
                    foreach (DirectoryInfo dir in subDirs)
                    {
                        long dirSize = GetDirectorySize(dir);
                        double dirSizeMB = dirSize / (1024.0 * 1024.0);
                        double percentage = totalSize > 0 ? (dirSize * 100.0 / totalSize) : 0;
                        ListViewItem item = new ListViewItem(new string[]
                        {
                    dir.Name,
                    dirSizeMB.ToString("F2"),
                    percentage.ToString("F2")
                        });
                        listView1.Items.Add(item);
                    }
                    button1.Enabled = false;
                    button2.Enabled = false;
                    button3.Enabled = false;
                }
            }
            label2.Text = "全部备份文件大小：" + GDL(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\").ToString() + "MB";
        }

        private void button4_Click(object sender, EventArgs e)
        {
            string T = DateTime.Now.ToString("yyyy'.'MM'.'dd'T'HH'.'mm'.'ss'.'fffffffzz");
            Directory.CreateDirectory(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + T);
            if (File.Exists(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Users.encrypted"))
                File.Copy(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Users.encrypted", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + T + @"\Users.encrypted");
            if (File.Exists(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted"))
                File.Copy(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Data.encrypted", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\" + T + @"\Data.encrypted");
            listView1.Items.Clear();
            DirectoryInfo dirInfo = new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\");
            DirectoryInfo[] subDirs = dirInfo.GetDirectories();
            long totalSize = subDirs.Sum(d => GetDirectorySize(d));
            foreach (DirectoryInfo dir in subDirs)
            {
                long dirSize = GetDirectorySize(dir);
                double dirSizeMB = dirSize / (1024.0 * 1024.0);
                double percentage = totalSize > 0 ? (dirSize * 100.0 / totalSize) : 0;
                ListViewItem item = new ListViewItem(new string[]
                {
                    dir.Name,
                    dirSizeMB.ToString("F2"),
                    percentage.ToString("F2")
                });
                listView1.Items.Add(item);
            }
            button1.Enabled = false;
            button2.Enabled = false;
            button3.Enabled = true;
            label2.Text = "全部备份文件大小：" + GDL(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArchivesCenter\Backups\" + Properties.Settings.Default.current_user + @"\").ToString() + "MB";
        }

        private void listView1_ItemSelectionChanged(object sender, ListViewItemSelectionChangedEventArgs e)
        {
            if (listView1.SelectedItems.Count > 0)
            {
                button1.Enabled = true;
                button2.Enabled = true;
            }
            else
            {
                button1.Enabled = false;
                button2.Enabled = false;
            }
        }
    }
}