niko
79 lines
3.1 KiB
C#
79 lines
3.1 KiB
C#
using LiteDB;
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namespace Campus_live_rewrite.api.dbs
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{
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/// <summary>
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/// A player's own curated lists (the Lists service's `list` table in the reference): the
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/// Play menu's "Saved for Later" row is `__SavedForLater_Rooms` (type 1, room ids), created by
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/// the client itself through PUT /lists/curatedlists/{name}/items/{itemId}/createlistifneeded.
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/// One list per (owner, type, name).
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/// </summary>
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public static class CuratedListDB
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{
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private static readonly Lazy<LiteDatabase> _db = new(() => new LiteDatabase(Path.Combine("Data", "DBs", "CuratedLists.db")));
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public class PlayerList
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{
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[BsonId] public long ListId { get; set; }
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public ulong CreatorAccountId { get; set; }
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public string Name { get; set; } = "";
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public int Type { get; set; } = 1;
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public int Accessibility { get; set; } = 0;
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public List<string> ItemIds { get; set; } = new();
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public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
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}
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private static ILiteCollection<PlayerList> Col()
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{
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var c = _db.Value.GetCollection<PlayerList>("lists");
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c.EnsureIndex(x => x.CreatorAccountId);
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return c;
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}
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/// <summary>
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/// A stable id for (owner, type, name) - the same list has the same id before and after it
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/// is created, so a read that answers a not-yet-created reserved list (`__SavedForLater_Rooms`)
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/// hands out the id the later write will use. Positive, 63-bit.
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/// </summary>
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public static long IdFor(ulong owner, int type, string name)
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{
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unchecked
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{
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ulong h = 1469598103934665603UL;
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foreach (char ch in (name ?? "").ToLowerInvariant()) { h ^= ch; h *= 1099511628211UL; }
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h ^= (ulong)type; h *= 1099511628211UL;
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h ^= owner; h *= 1099511628211UL;
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return (long)(h & 0x7FFF_FFFF_FFFF_FFFFUL) | 1L;
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}
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}
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public static PlayerList? Get(ulong owner, int type, string name) =>
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Col().FindById(IdFor(owner, type, name));
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public static PlayerList? GetById(long listId) => Col().FindById(listId);
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public static PlayerList AddItem(ulong owner, int type, string name, int accessibility, string itemId)
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{
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var col = Col();
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long id = IdFor(owner, type, name);
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var list = col.FindById(id) ?? new PlayerList
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{
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ListId = id, CreatorAccountId = owner, Name = name, Type = type, Accessibility = accessibility, CreatedAt = DateTime.UtcNow
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};
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if (!list.ItemIds.Contains(itemId)) list.ItemIds.Add(itemId);
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col.Upsert(list);
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return list;
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}
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public static PlayerList? RemoveItem(ulong owner, int type, string name, string itemId)
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{
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var col = Col();
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var list = col.FindById(IdFor(owner, type, name));
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if (list == null) return null;
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list.ItemIds.RemoveAll(x => x == itemId);
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col.Update(list);
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return list;
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}
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}
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}
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