using Omika.Core.Observability;
using Omika.Core.Observability.External;
using Omika.Core.Observability.Outbox;
using Omika.Diagnostics.Import;
using Omika.Diagnostics.Models;

namespace Omika.Diagnostics.Tests;

/// <summary>
/// T18 (§14/§84) : ScreenCode/FeatureCode traversent le transport (OmikaEvent → DTO →
/// JSONL/Record) ; les données anciennes (NULL) restent compatibles partout.
/// </summary>
public class DiagnosticUsageTransportTests
{
    [Fact]
    public void Mapper_ToDto_CarriesScreenAndFeatureCode()
    {
        var @event = new TelemetryEvent
        {
            EventCode = TelemetryEventCodes.MobileScreenView,
            ScreenCode = DiagnosticScreenCodes.Agenda,
            FeatureCode = DiagnosticFeatureCodes.EmailSend
        };

        DiagnosticEventDto? dto = DiagnosticEventMapper.ToDto(@event, maxStringLength: 256);

        Assert.NotNull(dto);
        Assert.Equal(DiagnosticScreenCodes.Agenda, dto!.ScreenCode);
        Assert.Equal(DiagnosticFeatureCodes.EmailSend, dto.FeatureCode);
    }

    [Fact]
    public void Mapper_ToDto_NullUsage_StaysNull()
    {
        var @event = new TelemetryEvent { EventCode = TelemetryEventCodes.MobileAppStarted };

        DiagnosticEventDto? dto = DiagnosticEventMapper.ToDto(@event, maxStringLength: 256);

        Assert.NotNull(dto);
        Assert.Null(dto!.ScreenCode);
        Assert.Null(dto.FeatureCode);
    }

    [Fact]
    public void RecordMapper_CarriesScreenAndFeatureCode()
    {
        var record = new RemoteDiagnosticRecord
        {
            Event = new DiagnosticEventDto
            {
                EventId = Guid.NewGuid(),
                EventCode = TelemetryEventCodes.MobileScreenView.Value!,
                ScreenCode = DiagnosticScreenCodes.SiteDetail,
                FeatureCode = DiagnosticFeatureCodes.ReportGenerate
            }
        };

        DiagnosticEventRecord? mapped = DiagnosticEventRecordMapper.ToRecord(record, "mobile");

        Assert.NotNull(mapped);
        Assert.Equal(DiagnosticScreenCodes.SiteDetail, mapped!.ScreenCode);
        Assert.Equal(DiagnosticFeatureCodes.ReportGenerate, mapped.FeatureCode);
    }

    [Fact]
    public void RecordMapper_OldDataNullUsage_StaysNull()
    {
        var record = new RemoteDiagnosticRecord
        {
            Event = new DiagnosticEventDto
            {
                EventId = Guid.NewGuid(),
                EventCode = "OMK-MOB-APP-001"
            }
        };

        DiagnosticEventRecord? mapped = DiagnosticEventRecordMapper.ToRecord(record, "mobile");

        Assert.NotNull(mapped);
        Assert.Null(mapped!.ScreenCode);
        Assert.Null(mapped.FeatureCode);
    }
}