🚚 Rename activity in sphere to timeline

In order to leave the activity keyword for pass service user activity

DysonNetwork.Sphere/Timeline/TimelineController.cs

@@ -0,0 +1,54 @@
+using DysonNetwork.Shared.Models;
+using DysonNetwork.Shared.Proto;
+using Microsoft.AspNetCore.Mvc;
+using NodaTime;
+using NodaTime.Text;
+
+namespace DysonNetwork.Sphere.Timeline;
+
+/// <summary>
+/// Activity is a universal feed that contains multiple kinds of data. Personalized and generated dynamically.
+/// </summary>
+[ApiController]
+[Route("/api/timeline")]
+public class ActivityController(TimelineService acts) : ControllerBase
+{
+    /// <summary>
+    /// Listing the activities for the user, users may be logged in or not to use this API.
+    /// When the users are not logged in, this API will return the posts that are public.
+    /// When the users are logged in,
+    /// the API will personalize the user's experience
+    /// by ranking up the people they like and the posts they like.
+    /// Besides, when users are logged in, it will also mix the other kinds of data and who're plying to them.
+    /// </summary>
+    [HttpGet]
+    public async Task<ActionResult<List<SnTimelineEvent>>> ListEvents(
+        [FromQuery] string? cursor,
+        [FromQuery] string? filter,
+        [FromQuery] int take = 20,
+        [FromQuery] string? debugInclude = null
+    )
+    {
+        Instant? cursorTimestamp = null;
+        if (!string.IsNullOrEmpty(cursor))
+        {
+            try
+            {
+                cursorTimestamp = InstantPattern.ExtendedIso.Parse(cursor).GetValueOrThrow();
+            }
+            catch
+            {
+                return BadRequest("Invalid cursor format");
+            }
+        }
+
+        var debugIncludeSet = debugInclude?.Split(',').ToHashSet() ?? new HashSet<string>();
+
+        HttpContext.Items.TryGetValue("CurrentUser", out var currentUserValue);
+        return currentUserValue is not Account currentUser
+            ? Ok(await acts.ListEventsForAnyone(take, cursorTimestamp, debugIncludeSet))
+            : Ok(
+                await acts.ListEvents(take, cursorTimestamp, currentUser, filter, debugIncludeSet)
+            );
+    }
+}