Radicade Public Code

Server/Rooms/Lists/AlgorithmicListsAPI.cs

@@ -0,0 +1,86 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using RadicadeServer.DB;
+using RadicadeServer.RecNet.Enums;
+using RadicadeServer.RecNet.Enums.Rooms;
+using RadicadeServer.RecNet.Rooms;
+
+namespace RadicadeServer.Lists
+{
+	[Route("lists/algorithmiclists")]
+	public class AlgorithmicListsAPI : Controller
+	{
+		private const int Rooms = 1;
+
+		private const int RowSize = 20;
+
+		RecDBContext db;
+
+		public AlgorithmicListsAPI(RecDBContext context)
+		{
+			this.db = context;
+		}
+
+		[HttpGet("{list}")]
+		public async Task<IActionResult> GetAlgorithmicList(string list, [FromQuery] int? type)
+		{
+			var echoed = type is >= 0 and <= 255 ? type.Value : Rooms;
+
+			return Ok(new AlgorithmicList
+			{
+				Type = echoed,
+				Entities = (await GetRowIds(list)).Select(roomId => new AlgorithmicListEntity
+				{
+					Id = roomId.ToString(),
+					Context = null,
+				}).ToList(),
+			});
+		}
+
+		private async Task<List<long>> GetRowIds(string? list)
+		{
+			var key = (list ?? string.Empty).Trim().ToLowerInvariant();
+
+			var rooms = await db.Rooms
+				.Where(x => x.Accessibility == Accessibility.Public
+					&& x.State == RoomState.Active
+					&& !x.IsDorm)
+				.ToListAsync();
+
+			if (key == "new")
+			{
+				return rooms
+					.OrderByDescending(x => x.PublishedAt)
+					.ThenBy(x => x.RoomId)
+					.Take(RowSize)
+					.Select(x => x.RoomId)
+					.ToList();
+			}
+
+			var visits = await db.RoomStats
+				.Select(x => new { x.RoomId, x.VisitCount })
+				.ToDictionaryAsync(x => x.RoomId, x => x.VisitCount);
+
+			return rooms
+				.OrderByDescending(x => visits.TryGetValue(x.RoomId, out var count) ? count : 0)
+				.ThenBy(x => x.RoomId)
+				.Take(RowSize)
+				.Select(x => x.RoomId)
+				.ToList();
+		}
+	}
+
+	public class AlgorithmicList
+	{
+		public int Type { get; set; }
+
+		public List<AlgorithmicListEntity> Entities { get; set; } = new();
+	}
+
+	public class AlgorithmicListEntity
+	{
+		public string Id { get; set; } = "";
+
+		public string? Context { get; set; }
+	}
+}