using System;
using System.Collections.Generic;
using Microsoft.Extensions.Options;
using StellaOps.Cryptography;

namespace StellaOps.Cryptography.DependencyInjection;

internal sealed class CryptoPluginProviderRegistry : ICryptoProviderRegistry
{
    private readonly CryptoProviderRegistry _registry;

    public CryptoPluginProviderRegistry(
        IReadOnlyList<ICryptoProvider> providers,
        IOptionsMonitor<CryptoProviderRegistryOptions>? optionsMonitor = null)
    {
        ArgumentNullException.ThrowIfNull(providers);
        var preferred = optionsMonitor?.CurrentValue?.ResolvePreferredProviders();
        _registry = new CryptoProviderRegistry(providers, preferred);
    }

    public IReadOnlyCollection<ICryptoProvider> Providers => _registry.Providers;
    public bool TryResolve(string preferredProvider, out ICryptoProvider provider)
        => _registry.TryResolve(preferredProvider, out provider);
    public ICryptoProvider ResolveOrThrow(CryptoCapability capability, string algorithmId)
        => _registry.ResolveOrThrow(capability, algorithmId);
    public CryptoSignerResolution ResolveSigner(
        CryptoCapability capability,
        string algorithmId,
        CryptoKeyReference keyReference,
        string? preferredProvider = null)
        => _registry.ResolveSigner(capability, algorithmId, keyReference, preferredProvider);
    public CryptoHasherResolution ResolveHasher(string algorithmId, string? preferredProvider = null)
        => _registry.ResolveHasher(algorithmId, preferredProvider);
}