Windows Azure Storage - Patch incorrect/missing MIME types

PatchIncorrectMimeTypesProgram.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.WindowsAzure;
using Microsoft.WindowsAzure.StorageClient;

class PatchIncorrectMimeTypesProgram
{
    static void recurse(IListBlobItem blobItem, Action<CloudBlockBlob> action)
    {
        if (blobItem is CloudBlobDirectory)
        {
            foreach (var item in ((CloudBlobDirectory)blobItem).ListBlobs())
            {
                recurse(item, action);
            }
        }
        else
        {
            action((CloudBlockBlob)blobItem);
        }
    }

    static void Main(string[] args)
    {
        var mappings = new Dictionary<string, string>
                               {
                                   { ".html", "text/html" },
                                   { ".css", "text/css" },
                                   { ".jpg", "image/jpeg"},
                                   { ".jpeg", "image/jpeg"},
                                   { ".js", "application/javascript"}
                               };

        Action<CloudBlockBlob> setMimeType = b =>
        {
            var uri = b.Uri.AbsoluteUri;
            var mimeType = mappings.Where(x => uri.EndsWith(x.Key)).Select(x => x.Value).FirstOrDefault();
            if (string.IsNullOrEmpty(mimeType)) return;
            if (string.Equals(b.Attributes.Properties.ContentType, mimeType)) return;
            b.Attributes.Properties.ContentType = mimeType;
            b.SetProperties();
        };

        var account = CloudStorageAccount.Parse("DefaultEndpointsProtocol=https;AccountName=xxxxxxx;AccountKey=Msss...");
        var client = account.CreateCloudBlobClient();
        var publicFiles = client.GetContainerReference("public");
        publicFiles.ListBlobs().ToList().ForEach(i => recurse(i, setMimeType));
    }
}