using System.Collections.ObjectModel;

namespace NeonSprawl.Server.Game.Contracts;

/// <summary>In-memory contract template catalog loaded at startup (NEO-145). Game code should prefer <see cref="IContractTemplateRegistry"/> for lookups.</summary>
public sealed class ContractTemplateCatalog
{
    public ContractTemplateCatalog(
        string contractsDirectory,
        IReadOnlyDictionary<string, ContractTemplateRow> byId,
        int catalogJsonFileCount)
    {
        ContractsDirectory = contractsDirectory;
        ById = new ReadOnlyDictionary<string, ContractTemplateRow>(new Dictionary<string, ContractTemplateRow>(byId, StringComparer.Ordinal));
        CatalogJsonFileCount = catalogJsonFileCount;
    }

    /// <summary>Absolute path to the directory that was enumerated for <c>*_contract_templates.json</c> catalogs.</summary>
    public string ContractsDirectory { get; }

    public IReadOnlyDictionary<string, ContractTemplateRow> ById { get; }

    public int DistinctTemplateCount => ById.Count;

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