using System;
using System.IO;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;

namespace PDF_Alchemy
{
    class Upload
    {
        const string accessKeyId = "xxxxxxxxxxxxxxxxxxxx";
        const string secretAccessKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

        // Uploads a single file to PDF Alchemy.
        static private void UploadFile(string filename)
        {
            // Trim filename to just the basename.
            string basename = filename;
            if (basename.LastIndexOf('\\') >= 0)
                basename = basename.Substring(basename.LastIndexOf('\\') + 1);
            Console.Write("Uploading '" + basename + "': ");

            // Generate the HMAC-SHA1 signature.
            string date = DateTime.UtcNow.ToString("r");
            string request = '/' + accessKeyId + "/inqueue/" + HttpUtility.UrlEncode(basename);
            string clearText = "PUT\n" + accessKeyId + '\n' + date + '\n' + request;
            HMACSHA1 hmac = new HMACSHA1(ASCIIEncoding.UTF8.GetBytes(secretAccessKey));
            string signature = Convert.ToBase64String(hmac.ComputeHash(ASCIIEncoding.UTF8.GetBytes(clearText)));

            // Upload the file to PDF Alchemy.
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://www.pdfalchemy.com" + request);
            req.Method = "PUT";
            req.Headers.Add("X-PDF-Alchemy-Date", date);
            req.Headers.Add("X-PDF-Alchemy-Signature", signature);
            byte[] fileData = File.ReadAllBytes(filename);
            try
            {
                Stream stream = req.GetRequestStream();
                stream.Write(fileData, 0, fileData.Length);
                stream.Close();
                HttpWebResponse response = (HttpWebResponse)req.GetResponse();
                Console.WriteLine(new StreamReader(response.GetResponseStream()).ReadToEnd());
                response.Close();
            }
            catch (System.Net.WebException e)
            {
                Console.Write(e.Message);
            }
        }

        // Uploads all convertable files from a single directory, to PDF Alchemy.
        static private void UploadFilesInDir(string dirname)
        {
            foreach (string filename in Directory.GetFiles(dirname))
                if (filename.EndsWith(".doc") || filename.EndsWith(".docx") ||
                    filename.EndsWith(".rtf") || filename.EndsWith(".txt"))
                    UploadFile(filename);
        }

        static void Main(string[] args)
        {
            // Process the command line arguments.
            foreach (string arg in args)
                if (Directory.Exists(arg))
                    UploadFilesInDir(arg);
                else
                    UploadFile(arg);
        }
    }
}