55 lines
1.9 KiB
C#
55 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text.Json;
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namespace SharpChat.EventStorage {
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public class VirtualEventStorage : IEventStorage {
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private readonly Dictionary<long, StoredEventInfo> Events = new();
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public void AddEvent(
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long id,
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string type,
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string? channelName,
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long senderId,
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string? senderName,
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Colour senderColour,
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int senderRank,
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string? senderNick,
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UserPermissions senderPerms,
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object? data = null,
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StoredEventFlags flags = StoredEventFlags.None
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) {
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// VES is meant as an emergency fallback but this is something else
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JsonDocument hack = JsonDocument.Parse(data == null ? "{}" : JsonSerializer.Serialize(data));
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Events.Add(id, new(id, type, senderId < 1 ? null : new UserInfo(
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senderId,
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senderName ?? string.Empty,
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senderColour,
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senderRank,
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senderPerms,
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senderNick
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), DateTimeOffset.Now, null, channelName, hack, flags));
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}
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public StoredEventInfo? GetEvent(long seqId) {
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return Events.TryGetValue(seqId, out StoredEventInfo? evt) ? evt : null;
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}
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public void RemoveEvent(StoredEventInfo evt) {
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Events.Remove(evt.Id);
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}
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public IEnumerable<StoredEventInfo> GetChannelEventLog(string channelName, int amount = 20, int offset = 0) {
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IEnumerable<StoredEventInfo> subset = Events.Values.Where(ev => ev.ChannelName == channelName);
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int start = subset.Count() - offset - amount;
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if(start < 0) {
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amount += start;
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start = 0;
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}
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return subset.Skip(start).Take(amount).ToArray();
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}
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}
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}
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