1 files changed, 64 insertions, 0 deletions
diff --git a/BackEnd/Timeline/Services/Api/IBookmarkTimelineService.cs b/BackEnd/Timeline/Services/Api/IBookmarkTimelineService.cs
new file mode 100644
index 00000000..18feee54
--- /dev/null
+++ b/BackEnd/Timeline/Services/Api/IBookmarkTimelineService.cs
@@ -0,0 +1,64 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Timeline.Services.Timeline;
+using Timeline.Services.User;
+
+namespace Timeline.Services.Api
+{
+    /// <summary>
+    /// Service interface that manages timeline bookmarks.
+    /// </summary>
+    public interface IBookmarkTimelineService
+    {
+        /// <summary>
+        /// Get bookmarks of a user.
+        /// </summary>
+        /// <param name="userId">User id of bookmark owner.</param>
+        /// <returns>Id of Bookmark timelines in order.</returns>
+        /// <exception cref="UserNotExistException">Thrown when user does not exist.</exception>
+        Task<List<long>> GetBookmarksAsync(long userId);
+
+        /// <summary>
+        /// Check if a timeline is a bookmark.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="timelineId">Timeline id.</param>
+        /// <param name="checkUserExistence">If true it will throw when user does not exist.</param>
+        /// <param name="checkTimelineExistence">If true it will throw when timeline does not exist.</param>
+        /// <returns>True if timeline is a bookmark. Otherwise false.</returns>
+        /// <exception cref="UserNotExistException">Throw if user does not exist and <paramref name="checkUserExistence"/> is true.</exception>
+        /// <exception cref="TimelineNotExistException">Thrown if timeline does not exist and <paramref name="checkTimelineExistence"/> is true.</exception>
+        Task<bool> IsBookmarkAsync(long userId, long timelineId, bool checkUserExistence = true, bool checkTimelineExistence = true);
+
+        /// <summary>
+        /// Add a bookmark to tail to a user.
+        /// </summary>
+        /// <param name="userId">User id of bookmark owner.</param>
+        /// <param name="timelineId">Timeline id.</param>
+        /// <returns>True if timeline is added to bookmark. False if it already is.</returns>
+        /// <exception cref="UserNotExistException">Thrown when user does not exist.</exception>
+        /// <exception cref="TimelineNotExistException">Thrown when timeline does not exist.</exception>
+        Task<bool> AddBookmarkAsync(long userId, long timelineId);
+
+        /// <summary>
+        /// Remove a bookmark from a user.
+        /// </summary>
+        /// <param name="userId">User id of bookmark owner.</param>
+        /// <param name="timelineId">Timeline id.</param>
+        /// <returns>True if deletion is performed. False if bookmark does not exist.</returns>
+        /// <exception cref="UserNotExistException">Thrown when user does not exist.</exception>
+        /// <exception cref="TimelineNotExistException">Thrown when timeline does not exist.</exception>
+        Task<bool> RemoveBookmarkAsync(long userId, long timelineId);
+
+        /// <summary>
+        /// Move bookmark to a new position.
+        /// </summary>
+        /// <param name="userId">User id of bookmark owner.</param>
+        /// <param name="timelineId">Timeline name.</param>
+        /// <param name="newPosition">New position. Starts at 1.</param>
+        /// <exception cref="UserNotExistException">Thrown when user does not exist.</exception>
+        /// <exception cref="TimelineNotExistException">Thrown when timeline does not exist.</exception>
+        /// <exception cref="InvalidBookmarkException">Thrown when the timeline is not a bookmark.</exception>
+        Task MoveBookmarkAsync(long userId, long timelineId, long newPosition);
+    }
+}