using System.IO;
using System.Security.Claims;
using Microsoft.AspNet.Authorization;
using Microsoft.AspNet.Builder;
using Microsoft.AspNet.FileProviders;
using Microsoft.AspNet.Hosting;
using Microsoft.AspNet.Http;
using Microsoft.AspNet.StaticFiles;
using Yavsc.ViewModels.Auth;

namespace Yavsc
{
    public partial class Startup
    {
        public static string UserFilesDirName { get; private set; }
        public static FileServerOptions UserFilesOptions { get; private set; }

        public static FileServerOptions AvatarsOptions { get; set; }
        public void ConfigureFileServerApp(IApplicationBuilder app,
                SiteSettings siteSettings, IHostingEnvironment env, IAuthorizationService authorizationService)
        {
            var userFilesDirInfo = new DirectoryInfo( siteSettings.UserFiles.Blog );
            UserFilesDirName =  userFilesDirInfo.FullName;

            if (!userFilesDirInfo.Exists) userFilesDirInfo.Create();

            UserFilesOptions = new FileServerOptions()
            {
                FileProvider = new PhysicalFileProvider(UserFilesDirName),
                RequestPath = new PathString(Constants.UserFilesPath),
                EnableDirectoryBrowsing = env.IsDevelopment()

            };
            UserFilesOptions.EnableDefaultFiles=true;
            UserFilesOptions.StaticFileOptions.ServeUnknownFileTypes=true;

            UserFilesOptions.StaticFileOptions.OnPrepareResponse += async context =>
             {
                 var uname = context.Context.User.GetUserName();
                 var path = context.Context.Request.Path;
                 var result = await authorizationService.AuthorizeAsync(context.Context.User, new ViewFileContext
                 { UserName = uname, File = context.File, Path = path } , new ViewRequirement());
             };
            var avatarsDirInfo = new DirectoryInfo(Startup.SiteSetup.UserFiles.Avatars);
            if (!avatarsDirInfo.Exists) avatarsDirInfo.Create();
            AvatarsDirName = avatarsDirInfo.FullName;

            AvatarsOptions = new FileServerOptions()
            {
                FileProvider = new PhysicalFileProvider(AvatarsDirName),
                RequestPath = new PathString(Constants.AvatarsPath),
                EnableDirectoryBrowsing = env.IsDevelopment()
            };

            app.UseFileServer(UserFilesOptions);

            app.UseFileServer(AvatarsOptions);

            app.UseStaticFiles();
        }
    }
}
