1 files changed, 98 insertions, 0 deletions
diff --git a/BackEnd/Timeline/Models/Timeline.cs b/BackEnd/Timeline/Models/Timeline.cs
new file mode 100644
index 00000000..a5987577
--- /dev/null
+++ b/BackEnd/Timeline/Models/Timeline.cs
@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+
+namespace Timeline.Models
+{
+    public enum TimelineVisibility
+    {
+        /// <summary>
+        /// All people including those without accounts.
+        /// </summary>
+        Public,
+        /// <summary>
+        /// Only people signed in.
+        /// </summary>
+        Register,
+        /// <summary>
+        /// Only member.
+        /// </summary>
+        Private
+    }
+
+    public static class TimelinePostContentTypes
+    {
+        public const string Text = "text";
+        public const string Image = "image";
+    }
+
+    public interface ITimelinePostContent
+    {
+        public string Type { get; }
+    }
+
+    public class TextTimelinePostContent : ITimelinePostContent
+    {
+        public TextTimelinePostContent(string text) { Text = text; }
+
+        public string Type { get; } = TimelinePostContentTypes.Text;
+        public string Text { get; set; }
+    }
+
+    public class ImageTimelinePostContent : ITimelinePostContent
+    {
+        public ImageTimelinePostContent(string dataTag) { DataTag = dataTag; }
+
+        public string Type { get; } = TimelinePostContentTypes.Image;
+
+        /// <summary>
+        /// The tag of the data. The tag of the entry in DataManager. Also the etag (not quoted).
+        /// </summary>
+        public string DataTag { get; set; }
+    }
+
+    public class TimelinePost
+    {
+        public TimelinePost(long id, ITimelinePostContent? content, DateTime time, User? author, DateTime lastUpdated, string timelineName)
+        {
+            Id = id;
+            Content = content;
+            Time = time;
+            Author = author;
+            LastUpdated = lastUpdated;
+            TimelineName = timelineName;
+        }
+
+        public long Id { get; set; }
+        public ITimelinePostContent? Content { get; set; }
+        public bool Deleted => Content == null;
+        public DateTime Time { get; set; }
+        public User? Author { get; set; }
+        public DateTime LastUpdated { get; set; }
+        public string TimelineName { get; set; }
+    }
+
+#pragma warning disable CA1724 // Type names should not match namespaces
+    public class Timeline
+#pragma warning restore CA1724 // Type names should not match namespaces
+    {
+        public string UniqueID { get; set; } = default!;
+        public string Name { get; set; } = default!;
+        public DateTime NameLastModified { get; set; } = default!;
+        public string Title { get; set; } = default!;
+        public string Description { get; set; } = default!;
+        public User Owner { get; set; } = default!;
+        public TimelineVisibility Visibility { get; set; }
+#pragma warning disable CA2227 // Collection properties should be read only
+        public List<User> Members { get; set; } = default!;
+#pragma warning restore CA2227 // Collection properties should be read only
+        public DateTime CreateTime { get; set; } = default!;
+        public DateTime LastModified { get; set; } = default!;
+    }
+
+    public class TimelineChangePropertyRequest
+    {
+        public string? Title { get; set; }
+        public string? Description { get; set; }
+        public TimelineVisibility? Visibility { get; set; }
+    }
+}