using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using StellaOps.Concelier.ProofService.Postgres.EfCore.CompiledModels;
using StellaOps.Concelier.ProofService.Postgres.EfCore.Models;
using Xunit;

namespace StellaOps.Concelier.ProofService.Postgres.Tests;

/// <summary>
/// Guard tests ensuring the EF Core compiled model is real (not a stub)
/// and contains all expected entity type registrations.
/// </summary>
public sealed class CompiledModelGuardTests
{
    [Trait("Category", "Unit")]
    [Fact]
    public void CompiledModel_Instance_IsNotNull()
    {
        ProofServiceDbContextModel.Instance.Should().NotBeNull(
            "compiled model must be generated via 'dotnet ef dbcontext optimize', not a stub");
    }

    [Trait("Category", "Unit")]
    [Fact]
    public void CompiledModel_HasExpectedEntityTypeCount()
    {
        var entityTypes = ProofServiceDbContextModel.Instance.GetEntityTypes().ToList();
        entityTypes.Should().HaveCount(5,
            "proof-service compiled model must contain exactly 5 entity types (regenerate with 'dotnet ef dbcontext optimize' if count differs)");
    }

    [Trait("Category", "Unit")]
    [Theory]
    [InlineData(typeof(BinaryFingerprintEntity))]
    [InlineData(typeof(ChangelogEvidenceEntity))]
    [InlineData(typeof(DistroAdvisoryEntity))]
    [InlineData(typeof(PatchEvidenceEntity))]
    [InlineData(typeof(PatchSignatureEntity))]
    public void CompiledModel_ContainsEntityType(Type entityType)
    {
        var found = ProofServiceDbContextModel.Instance.FindEntityType(entityType);
        found.Should().NotBeNull(
            $"compiled model must contain entity type '{entityType.Name}' — regenerate if missing");
    }

    [Trait("Category", "Unit")]
    [Fact]
    public void CompiledModel_EntityTypes_HaveTableNames()
    {
        var entityTypes = ProofServiceDbContextModel.Instance.GetEntityTypes();
        foreach (var entityType in entityTypes)
        {
            var tableName = entityType.GetTableName();
            tableName.Should().NotBeNullOrWhiteSpace(
                $"entity type '{entityType.ClrType.Name}' must have a table name configured");
        }
    }
}