using Furniture.DAL.Caching;
using Furniture.DAL.Adapters;
using Furniture.DAL.Providers;
using Furniture.DAL.Repositories;
using System.Reflection;

namespace Furniture.DAL.UnitTests;

public class BoundaryShapeTests
{
    [Fact]
    public void ProviderBoundaries_WhenReflected_AreInterfaces()
    {
        Assert.True(typeof(IFurnitureDataProvider).IsInterface);
        Assert.True(typeof(ICatalogDataProvider).IsInterface);
    }

    [Fact]
    public void RepositoryAndCacheBoundaries_WhenReflected_AreInterfaces()
    {
        Assert.True(typeof(IFurnitureRepository).IsInterface);
        Assert.True(typeof(ICatalogRepository).IsInterface);
        Assert.True(typeof(ICacheInvalidationPolicy).IsInterface);
    }

    [Fact]
    public void RepositoryBoundaries_WhenReflected_ExposeReadOnlyContracts()
    {
        Assert.Equal("ReadAvailabilityAsync", typeof(IFurnitureRepository).GetMethods().Single().Name);
        Assert.Equal("ReadProductAsync", typeof(ICatalogRepository).GetMethods().Single().Name);
    }

    [Fact]
    public void ProviderBoundaries_WhenReflected_ExposeReadOnlyContracts()
    {
        Assert.Equal("ReadAvailabilityAsync", typeof(IFurnitureDataProvider).GetMethods().Single().Name);
        Assert.Equal("ReadProductAsync", typeof(ICatalogDataProvider).GetMethods().Single().Name);
    }

    [Fact]
    public void AdapterBoundaries_WhenReflected_AreInterfaces()
    {
        Assert.True(typeof(IFurnitureDalGrpcContractAdapter).IsInterface);
        Assert.True(typeof(ICatalogProjectionContractAdapter).IsInterface);

        var grpcMethodNames = typeof(IFurnitureDalGrpcContractAdapter)
            .GetMethods(BindingFlags.Public | BindingFlags.Instance)
            .Select(method => method.Name)
            .OrderBy(name => name)
            .ToArray();

        Assert.Equal(
            ["FromGrpcAvailabilityRequest", "FromGrpcCatalogRequest", "ToGrpcAvailabilityRequest", "ToGrpcCatalogRequest"],
            grpcMethodNames);
    }
}