98 lines
3.8 KiB
C#
98 lines
3.8 KiB
C#
using System.Collections.Concurrent;
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using Microsoft.Extensions.Options;
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using NeonSprawl.Server.Game.PositionState;
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namespace NeonSprawl.Server.Game.Factions;
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/// <summary>Thread-safe in-memory faction standing; seeds the configured dev player (NEO-135).</summary>
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public sealed class InMemoryFactionStandingStore(
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IOptions<GamePositionOptions> options,
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IFactionDefinitionRegistry factionRegistry) : IFactionStandingStore
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{
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private readonly HashSet<string> knownPlayers = CreateKnownPlayers(options.Value);
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private readonly ConcurrentDictionary<string, int> standingByKey = new(StringComparer.Ordinal);
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private readonly ConcurrentDictionary<string, object> keyLocks = new(StringComparer.Ordinal);
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private static HashSet<string> CreateKnownPlayers(GamePositionOptions o)
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{
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var id = FactionStandingIds.NormalizePlayerId(o.DevPlayerId);
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if (id.Length == 0)
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{
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throw new InvalidOperationException("Game:DevPlayerId must be non-empty.");
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}
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return new HashSet<string>(StringComparer.OrdinalIgnoreCase) { id };
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}
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/// <inheritdoc />
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public bool CanWritePlayer(string playerId)
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{
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var player = FactionStandingIds.NormalizePlayerId(playerId);
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return player.Length > 0 && knownPlayers.Contains(player);
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}
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/// <inheritdoc />
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public FactionStandingReadOutcome TryGetStanding(string playerId, string factionId)
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{
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var player = FactionStandingIds.NormalizePlayerId(playerId);
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var faction = FactionStandingIds.NormalizeFactionId(factionId);
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if (player.Length == 0 || faction.Length == 0)
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{
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return DenyRead(FactionStandingReasonCodes.PlayerNotWritable);
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}
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if (!CanWritePlayer(player))
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{
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return DenyRead(FactionStandingReasonCodes.PlayerNotWritable);
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}
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if (!factionRegistry.TryGetDefinition(faction, out var definition) || definition is null)
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{
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return DenyRead(FactionStandingReasonCodes.UnknownFaction);
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}
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var key = FactionStandingIds.MakeStandingKey(player, faction);
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var raw = standingByKey.GetValueOrDefault(key, 0);
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return new FactionStandingReadOutcome(true, null, FactionStandingIds.ClampStanding(raw, definition));
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}
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/// <inheritdoc />
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public FactionStandingMutationOutcome TryApplyStandingDelta(string playerId, string factionId, int deltaAmount)
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{
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var player = FactionStandingIds.NormalizePlayerId(playerId);
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var faction = FactionStandingIds.NormalizeFactionId(factionId);
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if (player.Length == 0 || faction.Length == 0)
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{
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return DenyMutation(FactionStandingReasonCodes.PlayerNotWritable);
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}
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if (!CanWritePlayer(player))
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{
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return DenyMutation(FactionStandingReasonCodes.PlayerNotWritable);
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}
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if (!factionRegistry.TryGetDefinition(faction, out var definition) || definition is null)
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{
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return DenyMutation(FactionStandingReasonCodes.UnknownFaction);
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}
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var key = FactionStandingIds.MakeStandingKey(player, faction);
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lock (keyLocks.GetOrAdd(key, _ => new object()))
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{
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var raw = standingByKey.GetValueOrDefault(key, 0);
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var previousStanding = FactionStandingIds.ClampStanding(raw, definition);
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var newStanding = FactionStandingIds.ClampStanding(raw + deltaAmount, definition);
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standingByKey[key] = newStanding;
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return new FactionStandingMutationOutcome(true, null, previousStanding, newStanding);
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}
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}
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private static FactionStandingReadOutcome DenyRead(string reasonCode) =>
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new(false, reasonCode, 0);
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private static FactionStandingMutationOutcome DenyMutation(string reasonCode) =>
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new(false, reasonCode, 0, 0);
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}
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