using System.Collections.ObjectModel;

namespace NeonSprawl.Server.Game.Quests;

/// <summary>In-memory quest catalog loaded at startup (NEO-113). Game callers should use <see cref="IQuestDefinitionRegistry"/> (NEO-114).</summary>
public sealed class QuestDefinitionCatalog(
    string questsDirectory,
    IReadOnlyDictionary<string, QuestDefRow> byId,
    int catalogJsonFileCount)
{
    /// <summary>Absolute path to the directory that was enumerated for <c>*_quests.json</c> catalogs.</summary>
    public string QuestsDirectory { get; } = questsDirectory;

    public IReadOnlyDictionary<string, QuestDefRow> ById { get; } =
        new ReadOnlyDictionary<string, QuestDefRow>(new Dictionary<string, QuestDefRow>(byId, StringComparer.Ordinal));

    public int DistinctQuestCount => ById.Count;

    /// <summary>Number of <c>*_quests.json</c> files under <see cref="QuestsDirectory"/>.</summary>
    public int CatalogJsonFileCount { get; } = catalogJsonFileCount;

    /// <summary>Resolves a catalog row by stable quest <paramref name="id"/>.</summary>
    public bool TryGetQuest(string id, out QuestDefRow? row) =>
        ById.TryGetValue(id, out row);
}