using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
using ZB.MOM.WW.OtOpcUa.Driver.Historian.Sql.Common;

namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb.IntegrationTests;

/// <summary>Soft-delete behaviour. The writer-redelivery case lives in T7 (<c>TombstoneTests.Redelivery.cs</c>).</summary>
[Collection(QuestDbCollection.Name)]
public sealed partial class TombstoneTests(QuestDbFixture fx)
{
    private static readonly DateTime T0 = new(2026, 3, 1, 12, 0, 0, DateTimeKind.Utc);

    [Fact]
    public async Task Delete_then_raw_read_hides_the_row_and_leaves_a_NULL_valued_tombstone()
    {
        fx.SkipIfUnavailable();
        var rig = UpdateTests.MakeRig(fx);
        await rig.Updater.UpdateDataAsync("t", HistoryUpdateMode.Insert,
            [UpdateTests.V(T0, 1), UpdateTests.V(T0.AddSeconds(1), 2)], UpdateTests.Who, default);
        (await rig.Updater.DeleteAtTimeAsync("t", [T0], UpdateTests.Who, default)).ShouldBe([HistorianStatusCodes.Good]);

        (await UpdateTests.RowsAsync(rig, "t", liveOnly: true)).Select(r => r.Num).ShouldBe([2d]);
        var all = await UpdateTests.RowsAsync(rig, "t");
        all.Count.ShouldBe(2);                       // the tombstone replaced the row in place (dedup upsert)
        var tomb = all[0];
        tomb.Deleted.ShouldBeTrue();
        tomb.Num.ShouldBeNull();
        tomb.Kind.ShouldBe((byte)0);
        tomb.Status.ShouldBe((long)HistorianStatusCodes.BadNoData);
    }

    [Fact]
    public async Task Insert_over_a_tombstone_reports_GoodEntryInserted_and_the_row_is_visible()
    {
        fx.SkipIfUnavailable();
        var rig = UpdateTests.MakeRig(fx);
        await rig.Updater.UpdateDataAsync("t", HistoryUpdateMode.Insert, [UpdateTests.V(T0, 1)], UpdateTests.Who, default);
        await rig.Updater.DeleteAtTimeAsync("t", [T0], UpdateTests.Who, default);

        (await rig.Updater.UpdateDataAsync("t", HistoryUpdateMode.Replace, [UpdateTests.V(T0, 5)], UpdateTests.Who, default))
            .ShouldBe([HistorianStatusCodes.BadNoEntryExists]);   // a tombstone is no entry for Replace
        (await rig.Updater.UpdateDataAsync("t", HistoryUpdateMode.Insert, [UpdateTests.V(T0, 9)], UpdateTests.Who, default))
            .ShouldBe([HistorianStatusCodes.GoodEntryInserted]);
        var live = await UpdateTests.RowsAsync(rig, "t", liveOnly: true);
        live.Count.ShouldBe(1);
        live[0].Num.ShouldBe(9d);
        live[0].Deleted.ShouldBeFalse();
    }
}