using BuildFlow.Domain.Entities.Conversation;
using BuildFlow.Infrastructure.Persistence;
using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using Xunit;

namespace BuildFlow.Rag.Tests.Chat;

/// <summary>会话知识库导航必须复用现有显式外键，禁止产生影子列。</summary>
public sealed class ConversationModelConfigurationTests
{
    [Fact]
    public void KnowledgeBaseNavigationUsesKnowledgeBaseId()
    {
        using var db = new RagDbContext(
            new DbContextOptionsBuilder<RagDbContext>()
                .UseInMemoryDatabase($"conversation-model-{Guid.NewGuid():N}")
                .Options);

        var entityType = db.Model.FindEntityType(typeof(ConversationEntity));

        entityType.Should().NotBeNull();
        entityType!.FindProperty("KnowledgeBaseEntityId").Should().BeNull();
        var navigation = entityType.FindNavigation(nameof(ConversationEntity.KnowledgeBaseEntity));
        navigation.Should().NotBeNull();
        navigation!.ForeignKey.Properties.Select(x => x.Name)
            .Should().Equal(nameof(ConversationEntity.KnowledgeBaseId));
    }
}