using Microsoft.Extensions.Options;
using Omika.Diagnostics.Import;
using Omika.Diagnostics.Models;
using Omika.Diagnostics.Tests.Fakes;

namespace Omika.Diagnostics.Tests;

/// <summary>§53 — Déduplication : deux événements avec le même EventId → 1 événement PostgreSQL, sans exception fatale.</summary>
public class DiagnosticDeduplicationTests
{
    [Fact]
    public async Task Importer_DuplicateEventIds_ProducesSingleInserted()
    {
        Guid id = Guid.NewGuid();
        var source = new FakeDiagnosticJsonlSource(new[]
        {
            DiagnosticTestData.Record(id, "A"),
            DiagnosticTestData.Record(id, "A") // doublon (at-least-once)
        });

        var repository = new FakeDiagnosticEventRepository();
        var importer = new DiagnosticImporter(source, repository, Options.Create(new DiagnosticImportOptions { BatchSize = 100 }));

        DiagnosticImportResult result = await importer.ImportOnceAsync();

        Assert.True(result.Succeeded);
        Assert.Equal(2, result.ReadCount);
        Assert.Equal(1, result.ImportedCount); // 1 seul événement persisté
        Assert.Equal(1, repository.InsertedCount);
    }

    [Fact]
    public async Task Repository_DuplicateEventIds_IsIdempotent()
    {
        Guid id = Guid.NewGuid();
        var repository = new FakeDiagnosticEventRepository();

        DiagnosticEventRecord record = DiagnosticTestData.Event(id);
        int first = await repository.InsertBatchAsync(new[] { record });
        int second = await repository.InsertBatchAsync(new[] { DiagnosticTestData.Event(id) });

        Assert.Equal(1, first);
        Assert.Equal(0, second); // ON CONFLICT DO NOTHING → 0 nouvelle ligne
        Assert.Equal(1, repository.InsertedCount);
    }
}