consolidate Service interface and implementation classes

Oqtane.Client/Services/FolderService.cs

@@ -9,6 +9,58 @@ using Oqtane.Documentation;
 
 namespace Oqtane.Services
 {
+    /// <summary>
+    /// Service to get / create / modify <see cref="Folder"/> objects.
+    /// </summary>
+    public interface IFolderService
+    {
+        /// <summary>
+        /// Retrieve root folders of a <see cref="Site"/>
+        /// </summary>
+        /// <param name="siteId"></param>
+        /// <returns></returns>
+        Task<List<Folder>> GetFoldersAsync(int siteId);
+
+        /// <summary>
+        /// Retrieve the information of one <see cref="Folder"/>
+        /// </summary>
+        /// <param name="folderId"></param>
+        /// <returns></returns>
+        Task<Folder> GetFolderAsync(int folderId);
+
+        /// <summary>
+        /// Create one Folder using a <see cref="Folder"/> object. 
+        /// </summary>
+        /// <param name="folder"></param>
+        /// <returns></returns>
+        Task<Folder> AddFolderAsync(Folder folder);
+
+        /// <summary>
+        /// Update the information about a <see cref="Folder"/>
+        /// Use this to rename the folder etc.
+        /// </summary>
+        /// <param name="folder"></param>
+        /// <returns></returns>
+        Task<Folder> UpdateFolderAsync(Folder folder);
+
+        /// <summary>
+        /// Delete a <see cref="Folder"/>
+        /// </summary>
+        /// <param name="folderId">Reference to a <see cref="Folder"/></param>
+        /// <returns></returns>
+        Task DeleteFolderAsync(int folderId);
+
+        /// <summary>
+        /// Get a <see cref="Folder"/> of a <see cref="Site"/> based on the path.
+        /// </summary>
+        /// <param name="siteId">Reference to the <see cref="Site"/></param>
+        /// <param name="folderPath">Path of the folder
+        /// TODO: todoc verify exactly from where the folder path must start
+        /// </param>
+        /// <returns></returns>
+        Task<Folder> GetFolderAsync(int siteId, [NotNull] string folderPath);
+    }
+
     [PrivateApi("Don't show in the documentation, as everything should use the Interface")]
     public class FolderService : ServiceBase, IFolderService
     {