using System.Diagnostics.CodeAnalysis;

namespace NeonSprawl.Server.Game.Quests;

/// <summary>Adapter over <see cref="QuestDefinitionCatalog"/> (NEO-114).</summary>
public sealed class QuestDefinitionRegistry(QuestDefinitionCatalog catalog) : IQuestDefinitionRegistry
{
    private readonly IReadOnlyList<QuestDefRow> _definitionsInIdOrder = BuildDefinitionsInIdOrder(catalog);

    /// <inheritdoc />
    public bool TryGetDefinition(string? questId, [NotNullWhen(true)] out QuestDefRow? definition)
    {
        if (questId is null)
        {
            definition = null;
            return false;
        }

        return catalog.TryGetQuest(questId, out definition);
    }

    /// <inheritdoc />
    public bool TryNormalizeKnown(string? rawQuestId, [NotNullWhen(true)] out string normalized)
    {
        if (rawQuestId is null)
        {
            normalized = string.Empty;
            return false;
        }

        normalized = rawQuestId.Trim().ToLowerInvariant();
        if (normalized.Length == 0)
        {
            normalized = string.Empty;
            return false;
        }

        return catalog.TryGetQuest(normalized, out _);
    }

    /// <inheritdoc />
    public IReadOnlyList<QuestDefRow> GetDefinitionsInIdOrder() => _definitionsInIdOrder;

    private static IReadOnlyList<QuestDefRow> BuildDefinitionsInIdOrder(QuestDefinitionCatalog catalog)
    {
        var ids = catalog.ById.Keys.OrderBy(k => k, StringComparer.Ordinal).ToArray();
        var list = new List<QuestDefRow>(ids.Length);
        foreach (var id in ids)
        {
            list.Add(catalog.ById[id]);
        }

        return list;
    }
}