using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Windows.Azure.Storage;
using System.Xml.Linq;
using System.Net;

namespace PhotoStore_WebRole
{
    public partial class ManageBlob : System.Web.UI.Page
    {
        private ConnectionDetails connectionDetails;
        private string blobFullPath;

        private string blob;
        private string container;

        protected void Page_Load(object sender, EventArgs e)
        {
            connectionDetails = PhotoStoreUtils.GetConnectionDetails();

            blobFullPath = Request.QueryString["blob"];
            ProcessBlobElements();

            if (!IsPostBack)
            {
                SetPictureDetails();
            }
        }

        private void ProcessBlobElements()
        {
            string[] urlBits;

            urlBits = new Uri(blobFullPath).PathAndQuery.Split('/');

            container = urlBits[urlBits.Length - 2];
            blob = urlBits[urlBits.Length - 1];
        }

        private void SetPictureDetails()
        {
            imgBlob.ImageUrl = blobFullPath;
            LoadMetadata();
        }

        private void LoadMetadata()
        {
            BlobContainer request = new BlobContainer(connectionDetails, container);
            BlobContainerResponse response;

            response = request.GetBlobMetadata(blob);

            if (response.ResponseCode == System.Net.HttpStatusCode.OK)
            {
                txtDescription.Text = response.ResponseHeaders["x-ms-meta-description"];
            }
        }

        protected void btnSetMetadata_Click(object sender, EventArgs e)
        {
            Dictionary<string, string> metadata = new Dictionary<string, string>() ;
            BlobContainer request = new BlobContainer(connectionDetails, container);
            BlobContainerResponse response;

            metadata.Add("x-ms-meta-description", txtDescription.Text);

            response = request.SetBlobMetadata(blob, metadata);

            using (Label status = new Label())
            {
                if (response.ResponseMessage == "OK")
                {
                    status.Text = "Updated Successful";
                    status.ForeColor = System.Drawing.Color.Green;
                }
                else
                {
                    status.Text = String.Format("{0}: {1}", "Error", response.ResponseBody);
                    status.ForeColor = System.Drawing.Color.Red;
                }
                phStatus.Controls.Add(status);
            }
        }
    }
}