using IWshRuntimeLibrary;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GHFUploader
{
    public partial class ConfigureForm2 : Form
    {
        private RichTextBox richTextBox1;
        private GroupBox groupBox1;

        public ConfigureForm2(List<string> strings)
        {
            InitializeComponent();
            foreach (string str in strings)
            {
                richTextBox1.Text += str;
                richTextBox1.Text += '\n';
            }
            richTextBox1.AddContextMenu();
            this.BringToFront();
        }

        private void InitializeComponent()
        {
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            //
            // groupBox1
            //
            this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Left)
            | System.Windows.Forms.AnchorStyles.Right)));
            this.groupBox1.Controls.Add(this.richTextBox1);
            this.groupBox1.Location = new System.Drawing.Point(12, 12);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(865, 551);
            this.groupBox1.TabIndex = 0;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "results";
            //
            // richTextBox1
            //
            this.richTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Left)
            | System.Windows.Forms.AnchorStyles.Right)));
            this.richTextBox1.Location = new System.Drawing.Point(6, 19);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(853, 526);
            this.richTextBox1.TabIndex = 0;
            this.richTextBox1.Text = "";
            //
            // ConfigureForm2
            //
            this.ClientSize = new System.Drawing.Size(889, 575);
            this.Controls.Add(this.groupBox1);
            this.DoubleBuffered = true;
            this.MinimumSize = new System.Drawing.Size(200, 200);
            this.Name = "ConfigureForm2";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "GHFUploader Results";
            this.TopMost = true;
            this.groupBox1.ResumeLayout(false);
            this.ResumeLayout(false);
        }
    }

    public partial class ConfigureForm : Form
    {
        private Label installedLabel;
        private Button uninstallButton;
        private Button installButton;
        private GroupBox groupBox1;

        public ConfigureForm()
        {
            InitializeComponent();
            CheckInstallStatus();
            this.BringToFront();
        }

        private void InitializeComponent()
        {
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.installedLabel = new System.Windows.Forms.Label();
            this.uninstallButton = new System.Windows.Forms.Button();
            this.installButton = new System.Windows.Forms.Button();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            //
            // groupBox1
            //
            this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Left)
            | System.Windows.Forms.AnchorStyles.Right)));
            this.groupBox1.Controls.Add(this.installedLabel);
            this.groupBox1.Controls.Add(this.uninstallButton);
            this.groupBox1.Controls.Add(this.installButton);
            this.groupBox1.Location = new System.Drawing.Point(12, 12);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(370, 83);
            this.groupBox1.TabIndex = 0;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "install / uninstall";
            //
            // installedLabel
            //
            this.installedLabel.AutoSize = true;
            this.installedLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 20.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.installedLabel.Location = new System.Drawing.Point(96, 28);
            this.installedLabel.Name = "installedLabel";
            this.installedLabel.Size = new System.Drawing.Size(271, 31);
            this.installedLabel.TabIndex = 2;
            this.installedLabel.Text = "currently not installed";
            //
            // uninstallButton
            //
            this.uninstallButton.Location = new System.Drawing.Point(6, 48);
            this.uninstallButton.Name = "uninstallButton";
            this.uninstallButton.Size = new System.Drawing.Size(84, 23);
            this.uninstallButton.TabIndex = 1;
            this.uninstallButton.Text = "Uninstall";
            this.uninstallButton.UseVisualStyleBackColor = true;
            this.uninstallButton.Click += new System.EventHandler(this.uninstallButton_Click);
            //
            // installButton
            //
            this.installButton.Location = new System.Drawing.Point(6, 19);
            this.installButton.Name = "installButton";
            this.installButton.Size = new System.Drawing.Size(84, 23);
            this.installButton.TabIndex = 0;
            this.installButton.Text = "Install";
            this.installButton.UseVisualStyleBackColor = true;
            this.installButton.Click += new System.EventHandler(this.installButton_Click);
            //
            // ConfigureForm
            //
            this.ClientSize = new System.Drawing.Size(394, 107);
            this.Controls.Add(this.groupBox1);
            this.DoubleBuffered = true;
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.MaximumSize = new System.Drawing.Size(410, 146);
            this.MinimumSize = new System.Drawing.Size(410, 146);
            this.Name = "ConfigureForm";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "GHFUploader Installer";
            this.TopMost = true;
            this.groupBox1.ResumeLayout(false);
            this.groupBox1.PerformLayout();
            this.ResumeLayout(false);
        }

        private void installButton_Click(object sender, EventArgs e)
        {
            uninstallButton_Click(null, null);

            string exeDirectory = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "GHFUploader");
            if (!Directory.Exists(exeDirectory))
            {
                Directory.CreateDirectory(exeDirectory);
            }
            string exePath = Path.Combine(exeDirectory, "GHFUploader.exe");
            string currentExecutingLocation = System.Reflection.Assembly.GetExecutingAssembly().Location;
            System.IO.File.Copy(currentExecutingLocation, exePath);

            string shortcutPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.SendTo), "uploadToGHF.lnk");

            WshShell wsh = new WshShell();
            IWshRuntimeLibrary.IWshShortcut shortcut = wsh.CreateShortcut(shortcutPath) as IWshRuntimeLibrary.IWshShortcut;
            shortcut.Arguments = "";
            shortcut.TargetPath = exePath;
            shortcut.WindowStyle = 1;
            shortcut.Description = "upload to 666kb.com";
            shortcut.WorkingDirectory = @"";
            shortcut.IconLocation = "specify icon location";
            shortcut.Save();

            CheckInstallStatus();
        }

        private void uninstallButton_Click(object sender, EventArgs e)
        {
            string shortcutPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.SendTo), "uploadToGHF.lnk");
            if (System.IO.File.Exists(shortcutPath))
            {
                System.IO.File.Delete(shortcutPath);
            }
            string fileSavePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "GHFUploader", "GHFUploader.exe");
            if (System.IO.File.Exists(fileSavePath))
            {
                System.IO.File.Delete(fileSavePath);
            }
            CheckInstallStatus();
        }

        private void CheckInstallStatus()
        {
            string shortcutPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.SendTo), "uploadToGHF.url");
            string fileSavePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "GHFUploader", "GHFUploader.exe");
            if (System.IO.File.Exists(shortcutPath) || System.IO.File.Exists(fileSavePath))
            {
                installedLabel.Text = "currently installed";
                installedLabel.ForeColor = System.Drawing.Color.Green;
            }
            else
            {
                installedLabel.Text = "currently not installed";
                installedLabel.ForeColor = System.Drawing.Color.Red;
            }
        }
    }

    internal class Program
    {
        [STAThread]
        private static void Main(string[] args)
        {
            Regex urlExtractionRegex = new Regex("n Bilddatei: <a href=\"(.+?)\"", RegexOptions.Compiled);

            if (args.Length == 0)
            {
                // no argument, .exe was executed directly
                ConfigureForm configureForm = new ConfigureForm();
                Application.Run(configureForm);
            }
            else
            {
                List<string> results = new List<string>();
                // arguments, let's upload
                foreach (string fileToBeUploaded in args)
                {
                    string uploadResult = Upload(fileToBeUploaded);
                    Match match = urlExtractionRegex.Match(uploadResult);
                    if (match.Success)
                    {
                        string resultUrl = match.Groups[1].ToString();
                        results.Add(resultUrl);
                    }
                    else
                    {
                        results.Add("File<" + fileToBeUploaded + "> could not be uploaded.");
                    }
                }

                if (results.Count == 1)
                {
                    Clipboard.SetText(results[0]);
                    MessageBox.Show("Upload attempt finished. The result is in your clipboard.", "GHUploader", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }
                else
                {
                    Application.Run(new ConfigureForm2(results));
                }
            }
        }

        // uploads file at path, returns url
        private static string Upload(string path)
        {
            string result = UploadFilesToRemoteUrl("http://666kb.com/u.php", path);
            return result;
        }

        // from http://stackoverflow.com/questions/566462/upload-files-with-httpwebrequest-multipart-form-data
        public static string UploadFilesToRemoteUrl(string url, string file, NameValueCollection formFields = null)
        {
            string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.ContentType = "multipart/form-data; boundary=" +
                                    boundary;
            request.Method = "POST";
            request.KeepAlive = true;

            Stream memStream = new System.IO.MemoryStream();

            var boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +
                                                                    boundary + "\r\n");
            var endBoundaryBytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +
                                                                        boundary + "--");

            string formdataTemplate = "\r\n--" + boundary +
                                        "\r\nContent-Disposition: form-data; name=\"{0}\";\r\n\r\n{1}";

            if (formFields != null)
            {
                foreach (string key in formFields.Keys)
                {
                    string formitem = string.Format(formdataTemplate, key, formFields[key]);
                    byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
                    memStream.Write(formitembytes, 0, formitembytes.Length);
                }
            }

            string headerTemplate =
                "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
                "Content-Type: application/octet-stream\r\n\r\n";

            memStream.Write(boundarybytes, 0, boundarybytes.Length);
            var header = string.Format(headerTemplate, "f", file);
            var headerbytes = System.Text.Encoding.UTF8.GetBytes(header);

            memStream.Write(headerbytes, 0, headerbytes.Length);

            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read))
            {
                var buffer = new byte[1024];
                var bytesRead = 0;
                while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
                {
                    memStream.Write(buffer, 0, bytesRead);
                }
            }

            memStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            request.ContentLength = memStream.Length;

            using (Stream requestStream = request.GetRequestStream())
            {
                memStream.Position = 0;
                byte[] tempBuffer = new byte[memStream.Length];
                memStream.Read(tempBuffer, 0, tempBuffer.Length);
                memStream.Close();
                requestStream.Write(tempBuffer, 0, tempBuffer.Length);
            }

            using (var response = request.GetResponse())
            {
                Stream stream2 = response.GetResponseStream();
                StreamReader reader2 = new StreamReader(stream2);
                return reader2.ReadToEnd();
            }
        }
    }

    internal static class RichTextBoxExtension
    {
        public static void AddContextMenu(this RichTextBox rtb)
        {
            if (rtb.ContextMenuStrip == null)
            {
                ContextMenuStrip cms = new ContextMenuStrip { ShowImageMargin = false };
                ToolStripMenuItem tsmiCut = new ToolStripMenuItem("Cut");
                tsmiCut.Click += (sender, e) => rtb.Cut();
                cms.Items.Add(tsmiCut);
                ToolStripMenuItem tsmiCopy = new ToolStripMenuItem("Copy");
                tsmiCopy.Click += (sender, e) => rtb.Copy();
                cms.Items.Add(tsmiCopy);
                ToolStripMenuItem tsmiPaste = new ToolStripMenuItem("Paste");
                tsmiPaste.Click += (sender, e) => rtb.Paste();
                cms.Items.Add(tsmiPaste);
                rtb.ContextMenuStrip = cms;
            }
        }
    }
}