ken120-mvc-vuejs-MediaLibraryApi.ashx

ken120-mvc-vuejs-MediaLibraryApi.ashx

using System.Linq;
using System.Web;
using CMS.Helpers;
using CMS.MediaLibrary;
using CMS.Membership;
using CMS.SiteProvider;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;

namespace CMSApp.CMSPages
{
    /// <summary>
    /// Endpoint for Mvc widgets needing to query the media library
    /// </summary>
    public class MediaLibraryApi : IHttpHandler
    {
        private static readonly JsonSerializerSettings serializerSettings = 
            new JsonSerializerSettings
            {
                ContractResolver = new CamelCasePropertyNamesContractResolver(),
                Formatting = Formatting.Indented
            };

        public void ProcessRequest(HttpContext context)
        {
            if (!AuthenticationHelper.IsAuthenticated())
            {
                return;
            }

            var queryString = context.Request.QueryString;

            int pageSize = ValidationHelper.GetInteger(queryString["pageSize"], 10);
            int pageNumber = ValidationHelper.GetInteger(queryString["pageNumber"], 0);

            string fileName = queryString["fileName"] ?? "";
            string fileTitle = queryString["fileTitle"] ?? "";

            var query = MediaFileInfoProvider.GetMediaFiles()
                .WhereNotNull(nameof(MediaFileInfo.FileName))
                .WhereNotNull(nameof(MediaFileInfo.FileSiteID))
                .WhereEquals(nameof(MediaFileInfo.FileSiteID), SiteContext.CurrentSiteID)
                .Page(pageNumber, pageSize);

            if (!string.IsNullOrWhiteSpace(fileName))
            {
                query = query.WhereContains(nameof(MediaFileInfo.FileName), fileName);
            }

            if (!string.IsNullOrWhiteSpace(fileTitle))
            {
                query = query.WhereContains(nameof(MediaFileInfo.FileTitle), fileTitle);
            }

            var files = query
                .TypedResult
                .Select(f => new
                {
                    f.FileID,
                    f.FileGUID,
                    f.FileName,
                    f.FileTitle,
                    f.FilePath,
                    f.FileSize,
                    f.FileImageWidth,
                    f.FileImageHeight,
                    f.FileModifiedWhen,
                    f.FileDescription,
                    f.FileExtension,
                    f.FileCreatedWhen,
                    PermanentUrl = MediaLibraryHelper.GetPermanentUrl(f).TrimStart('~')
                });

            string responseJson = JsonConvert.SerializeObject(files, serializerSettings);

            context.Response.ContentType = "application/json";
            context.Response.Write(responseJson);
        }

        public bool IsReusable => false;
    }
}