using MeterVault.App.MeterEditing;
using MeterVault.Core.Analysis;
using MeterVault.Core.Analysis.Totals;
using MeterVault.Core.Analysis.Virtual;
using MeterVault.Core.Domain;
using MeterVault.Infrastructure.Analysis;
using MeterVault.Integration.Tests.Analysis;

namespace MeterVault.Integration.Tests.Editor;

/// <summary>
/// The meter editor's rules without a browser or a database (brief §5.1, D-23, D-26, D-28, D-31, D-39, A-08, A-15): how
/// a calculation is written in Sum, Difference and Formula mode, which sources and cost rules are offered, when a save is
/// blocked, what a legacy meter proposes, and the words for a loop, a unit mismatch and a refused totals override. The
/// catalog is built from entities (<see cref="AnalysisCatalog.Build"/>), exactly as a request builds it.
/// </summary>
public sealed class MeterEditorLogicTests
{
    private const int SolarA = 1;
    private const int SolarB = 2;
    private const int House = 3;
    private const int Water = 4;
    private const int SolarSum = 5;
    private const int HalfHouse = 6;
    private const int Draft = 7;
    private const int ReadsDraft = 8;
    private const int Garage = 9;
    private const int Car = 10;
    private const int Legacy = 11;

    // ------------------------------------------------------------------------------------------------ writing a calculation

    [Theory]
    [InlineData("m1 + m2", CalculationMode.Sum, new[] { 1, 2 })]
    [InlineData("m2 + m1", CalculationMode.Sum, new[] { 2, 1 })]
    [InlineData("(m1) + m2", CalculationMode.Sum, new[] { 1, 2 })]
    [InlineData("m3 - m1 - m2", CalculationMode.Difference, new[] { 3, 1, 2 })]
    [InlineData("m3 - (m1 - m2)", CalculationMode.Advanced, new[] { 3, 1, 2 })]
    [InlineData("(m1 - m2) * 0.5", CalculationMode.Advanced, new[] { 1, 2 })]
    [InlineData("m1 + m1", CalculationMode.Advanced, new[] { 1, 1 })]
    [InlineData("m1 + 5", CalculationMode.Advanced, new[] { 1 })]
    public void A_stored_formula_reopens_in_the_mode_its_shape_allows(string expression, CalculationMode mode, int[] meters)
    {
        var draft = CalculationDraft.From(new VirtualDefinition(expression, QuantityKind.Consumption, "kWh", VirtualCostRule.None));

        Assert.Equal(mode, draft.Mode);
        switch (mode)
        {
            case CalculationMode.Sum:
                Assert.Equal(meters, draft.SumSources);
                break;
            case CalculationMode.Difference:
                Assert.Equal(meters[0], draft.Minuend);
                Assert.Equal(meters[1..], draft.Subtrahends);
                break;
            default:
                Assert.Equal(expression, draft.Text);
                break;
        }

        // Whatever the mode, the text it writes is the same calculation.
        Assert.Equal(Formula.Parse(expression), Formula.Parse(draft.Text));
    }

    [Fact]
    public void Switching_modes_carries_the_meters_and_the_formula_text()
    {
        var draft = new CalculationDraft();
        Assert.True(draft.IsIncomplete);
        Assert.Equal(string.Empty, draft.Text);

        draft.SetSumSources([SolarA, SolarB]);
        Assert.Equal("m1 + m2", draft.Text);
        draft.SetSumSources([SolarB, SolarA, House]);    // picking a meter never reorders the ones already there
        Assert.Equal("m1 + m2 + m3", draft.Text);

        draft.SwitchTo(CalculationMode.Difference);
        Assert.Equal("m1 - m2 - m3", draft.Text);
        draft.SetMinuend(SolarB);                        // the start is never also subtracted
        Assert.Equal("m2 - m3", draft.Text);
        draft.SetSubtrahends([SolarB]);
        Assert.True(draft.IsIncomplete);                 // nothing left to subtract
        draft.SetSubtrahends([House, SolarA]);

        draft.SwitchTo(CalculationMode.Advanced);
        Assert.Equal("m2 - m3 - m1", draft.Expression);
        draft.Expression = "m1 / m3";
        draft.InsertReference(SolarB);
        Assert.Equal("m1 / m3 + m2", draft.Expression);
        draft.Expression = "m1 * (";
        draft.InsertReference(House);
        Assert.Equal("m1 * ( m3", draft.Expression);

        // Back from a formula of another shape: the pickers start from the meters it names.
        draft.Expression = "(m3 - m1) / m2";
        draft.SwitchTo(CalculationMode.Sum);
        Assert.Equal([House, SolarA, SolarB], draft.SumSources);
        Assert.Equal(CalculationMode.Sum, draft.Mode);
    }

    [Fact]
    public void The_definition_leaves_undeclared_parts_to_inference()
    {
        var draft = new CalculationDraft { ResultUnit = "  " };
        draft.SetSumSources([SolarA, SolarB]);

        var definition = draft.Definition;

        Assert.Equal("m1 + m2", definition.Expression);
        Assert.Null(definition.ResultKind);
        Assert.Null(definition.ResultUnit);
        Assert.Null(definition.CostRule);
        Assert.Equal([SolarA, SolarB], definition.ReferencedMeterIds);
    }

    // ------------------------------------------------------------------------------------------------ sources and cost rules

    [Fact]
    public void Sum_and_difference_pickers_offer_only_compatible_sources()
    {
        var catalog = Catalog();
        var options = CalculationSources.For(catalog, MeterDraft.NewMeterId, energyTypeId: 1);

        // Nothing picked: every meter that can be added up; the draft's own type first.
        var open = CalculationSources.ForSum(options, []).Select(o => o.MeterId).ToList();
        Assert.Contains(SolarA, open);
        Assert.Contains(Water, open);
        Assert.True(open.IndexOf(Water) > open.IndexOf(House), "meters of the draft's own energy type come first");

        // Once a generation meter in kWh is picked, only generation in kWh fits a sum.
        var afterSolar = CalculationSources.ForSum(options, [SolarA]).Select(o => o.MeterId).ToHashSet();
        Assert.Equal(new HashSet<int> { SolarA, SolarB, SolarSum, Draft, ReadsDraft, Legacy }, afterSolar);

        // A difference subtracts meters of its start's unit, of any additive kind (import minus export is a net balance).
        var fromHouse = CalculationSources.ForSubtrahends(options, House, []).Select(o => o.MeterId).ToHashSet();
        Assert.Contains(SolarA, fromHouse);
        Assert.Contains(Garage, fromHouse);
        Assert.DoesNotContain(House, fromHouse);
        Assert.DoesNotContain(Water, fromHouse);
        Assert.True(CalculationSources.MixesKinds(options, [House, SolarA]));

        // Editing a meter never offers itself, nor a calculation that already reads it (that would close a loop).
        var forDraft = CalculationSources.For(catalog, Draft, energyTypeId: 1).Select(o => o.MeterId).ToHashSet();
        Assert.DoesNotContain(Draft, forDraft);
        Assert.DoesNotContain(ReadsDraft, forDraft);
        Assert.Contains(SolarSum, forDraft);

        // Each option says what it measures, in its normalized unit.
        var water = options.Single(o => o.MeterId == Water);
        Assert.Equal("m³", water.Unit);
        Assert.Equal(QuantityKind.Consumption, water.Kind);
        Assert.Equal(new DateOnly(2021, 3, 1), options.Single(o => o.MeterId == SolarA).InstalledAt);
    }

    [Theory]
    [InlineData("m3 + m9", null, new[] { VirtualCostRule.None, VirtualCostRule.SourceCosts, VirtualCostRule.OwnQuantity })]
    [InlineData("m1 + m2", null, new[] { VirtualCostRule.None, VirtualCostRule.OwnQuantity })]
    [InlineData("m3 - m9", null, new[] { VirtualCostRule.None, VirtualCostRule.OwnQuantity })]
    [InlineData("0.5 * m3", null, new[] { VirtualCostRule.None, VirtualCostRule.OwnQuantity })]
    [InlineData("m3 + 5", null, new[] { VirtualCostRule.None })]
    [InlineData("m3 / m9", QuantityKind.Indicator, new[] { VirtualCostRule.None })]
    [InlineData("m6 + m9", null, new[] { VirtualCostRule.None, VirtualCostRule.OwnQuantity })]
    public void Cost_rules_are_offered_only_where_the_calculation_supports_them(string expression, QuantityKind? kind, VirtualCostRule[] offered)
    {
        var catalog = Catalog();
        var validation = VirtualValidator.Validate(new VirtualDefinition(expression, kind, kind == QuantityKind.Indicator ? "%" : null), MeterDraft.NewMeterId, catalog.Catalog);

        Assert.Equal(offered, CalculationSources.OfferedCostRules(validation.Formula, validation.Kind, MeterDraft.NewMeterId, catalog.Catalog));
    }

    [Fact]
    public void A_rule_that_is_not_offered_says_why()
    {
        var catalog = Catalog().Catalog;
        CostRuleUnavailable? Why(VirtualCostRule rule, string expression, QuantityKind? kind = null)
        {
            var v = VirtualValidator.Validate(new VirtualDefinition(expression, kind, kind == QuantityKind.Indicator ? "%" : null), MeterDraft.NewMeterId, catalog);
            return CalculationSources.WhyNot(rule, v.Formula, v.Kind, MeterDraft.NewMeterId, catalog);
        }

        Assert.Null(Why(VirtualCostRule.SourceCosts, "m3 + m9"));
        Assert.Equal(CostRuleBlock.Generation, Why(VirtualCostRule.SourceCosts, "m1 + m2")!.Reason);
        Assert.Equal(CostRuleBlock.NotPureSum, Why(VirtualCostRule.SourceCosts, "m3 - m9")!.Reason);
        Assert.Equal(new CostRuleUnavailable(CostRuleBlock.NestedNotPureSum, HalfHouse), Why(VirtualCostRule.SourceCosts, "m6 + m9"));
        Assert.Equal(CostRuleBlock.NotLinear, Why(VirtualCostRule.OwnQuantity, "m3 + 5")!.Reason);
        Assert.Equal(CostRuleBlock.Indicator, Why(VirtualCostRule.OwnQuantity, "m3 / m9", QuantityKind.Indicator)!.Reason);
        Assert.Null(Why(VirtualCostRule.None, "m3 / m9", QuantityKind.Indicator));
    }

    // ------------------------------------------------------------------------------------------------ the calculation section

    [Fact]
    public void A_new_calculation_is_saved_only_once_it_is_complete_and_valid()
    {
        var model = new VirtualCalculationModel(Catalog(), MeterDraft.NewMeterId, energyTypeId: 1);
        Assert.False(model.CanSave);
        Assert.Null(model.EffectiveDefinition);
        Assert.Empty(model.Problems);                    // incomplete asks for input, it does not report errors

        model.Draft.SetSumSources([SolarA, SolarB]);
        model.Refresh();

        // A-08: what a save writes is the effective definition — the inferred kind, the canonical unit, the default rule.
        Assert.True(model.CanSave);
        Assert.Equal(QuantityKind.Generation, model.InferredKind);
        Assert.Equal("kWh", model.InferredUnit);
        Assert.Equal(VirtualCostRule.None, model.DefaultCostRule);        // a generation sum is not costed (A-15)
        Assert.Equal(new VirtualDefinition("m1 + m2", QuantityKind.Generation, "kWh", VirtualCostRule.None), model.EffectiveDefinition);

        // A new sum links its sources in the flow view unless told not to (links never change the calculation).
        Assert.True(model.OffersLinkSync);
        Assert.True(model.SyncLinks);
        Assert.Equal([SolarA, SolarB], model.LinksAfterSave);
        model.SyncLinks = false;
        Assert.Empty(model.LinksAfterSave);

        // A unit mismatch blocks the save and says so.
        model.Draft.SwitchTo(CalculationMode.Advanced);
        model.Draft.Expression = "m1 + m4";
        model.Refresh();
        Assert.False(model.CanSave);
        Assert.Contains(model.Problems, p => p.Kind == VirtualProblemKind.UnitMismatch);
    }

    [Fact]
    public void A_cost_rule_the_formula_stops_supporting_falls_back_to_the_default()
    {
        var model = new VirtualCalculationModel(Catalog(), MeterDraft.NewMeterId, energyTypeId: 1);
        model.Draft.SetSumSources([House, Garage]);
        model.Refresh();
        Assert.Equal(VirtualCostRule.SourceCosts, model.DefaultCostRule);
        model.Draft.CostRule = VirtualCostRule.OwnQuantity;
        model.Refresh();
        Assert.False(model.CostRuleReset);
        Assert.Equal(VirtualCostRule.OwnQuantity, model.EffectiveDefinition!.CostRule);

        // m3 + 5 is not linear: the chosen rule is dropped rather than left as an error the user did not make.
        model.Draft.SwitchTo(CalculationMode.Advanced);
        model.Draft.Expression = "m3 + 5";
        model.Refresh();
        Assert.True(model.CostRuleReset);
        Assert.Null(model.Draft.CostRule);
        Assert.Equal([VirtualCostRule.None], model.OfferedCostRules);
        Assert.Equal(VirtualCostRule.None, model.EffectiveDefinition!.CostRule);
    }

    [Fact]
    public void A_source_cost_rule_over_a_nested_calculation_that_is_not_a_sum_blocks_the_save()
    {
        // The formula is a plain sum at its own level, but its source Half house is 0.5 × House (A-15): the validator's
        // CostRuleProblem must stop a save that stores sourceCosts, even though the definition itself is valid.
        var catalog = Catalog();
        var validation = MeterDraftAnalysis.Validate(catalog, NewVirtual() with
        {
            Definition = new VirtualDefinition("m6 + m9", null, null, VirtualCostRule.SourceCosts),
        });

        Assert.True(validation.IsValid);
        Assert.False(validation.IsSavable);
        Assert.Equal(VirtualProblemKind.CostRuleNeedsPureSum, validation.CostRuleProblem!.Kind);
        var text = AnalysisUiTestData.In("en", () => MeterEditorText.Problem(validation.CostRuleProblem, Name(catalog)));
        Assert.Equal("“Sum of the sources' costs” needs plain sums throughout, but Half house is not a plain sum.", text);
    }

    [Fact]
    public void A_stored_calculation_reopens_with_what_its_sources_imply_as_automatic()
    {
        // Solar sum is stored with everything declared (A-08); what merely repeats the sources shows as automatic, so a
        // change of sources carries the kind along instead of contradicting it.
        var model = new VirtualCalculationModel(Catalog(), SolarSum, energyTypeId: 1);

        Assert.Equal(VirtualMeterStatus.Valid, model.Status);
        Assert.Equal(CalculationMode.Sum, model.Draft.Mode);
        Assert.Equal([SolarA, SolarB], model.Draft.SumSources);
        Assert.Null(model.Draft.ResultKind);
        Assert.Null(model.Draft.ResultUnit);
        Assert.Null(model.Draft.CostRule);
        Assert.True(model.CanSave);
        Assert.False(model.OffersLinkSync);     // its links already are its sources
    }

    [Fact]
    public void A_legacy_meter_opens_with_its_implied_sum_as_a_proposal_to_confirm()
    {
        var model = new VirtualCalculationModel(Catalog(), Legacy, energyTypeId: 1);

        Assert.True(model.IsLegacyProposal);
        Assert.Equal(CalculationMode.Sum, model.Draft.Mode);
        Assert.Equal([SolarA, SolarB], model.Draft.SumSources.Order());
        Assert.True(model.CanSave);
        Assert.Equal(QuantityKind.Generation, model.EffectiveDefinition!.ResultKind);
        Assert.False(model.OffersLinkSync);
    }

    // ------------------------------------------------------------------------------------------------ findings in words

    [Fact]
    public void A_loop_is_named_by_its_path_in_both_languages()
    {
        var catalog = Catalog();
        var validation = MeterDraftAnalysis.Validate(catalog, new MeterDraft(Draft, "Draft", 1, MeterMode.Virtual, "kWh")
        {
            Definition = new VirtualDefinition($"m{ReadsDraft}"),
        });

        var cycle = Assert.Single(validation.Problems, p => p.Kind == VirtualProblemKind.DependencyCycle);
        Assert.Equal([Draft, ReadsDraft, Draft], cycle.MeterIds);
        Assert.Equal(
            "The calculation goes round in a circle: Draft → Reads draft → Draft.",
            AnalysisUiTestData.In("en", () => MeterEditorText.Problem(cycle, Name(catalog))));
        Assert.Equal(
            "Die Berechnung dreht sich im Kreis: Draft → Reads draft → Draft.",
            AnalysisUiTestData.In("de", () => MeterEditorText.Problem(cycle, Name(catalog))));
    }

    [Fact]
    public void A_unit_mismatch_names_both_meters_and_their_units()
    {
        var catalog = Catalog();
        var validation = MeterDraftAnalysis.Validate(catalog, NewVirtual() with { Definition = new VirtualDefinition("m1 + m4") });

        var mismatch = Assert.Single(validation.Problems, p => p.Kind == VirtualProblemKind.UnitMismatch);
        Assert.Equal(
            "Solar A (kWh) and Water (m³) cannot be added or subtracted: their units differ.",
            AnalysisUiTestData.In("en", () => MeterEditorText.Problem(mismatch, Name(catalog))));
        Assert.Equal(
            "Solar A (kWh) und Water (m³) lassen sich nicht addieren oder subtrahieren: Ihre Einheiten unterscheiden sich.",
            AnalysisUiTestData.In("de", () => MeterEditorText.Problem(mismatch, Name(catalog))));
    }

    [Theory]
    [InlineData("m1 +", "The formula ends where a meter or a number is expected.")]
    [InlineData("m1 + n2", "“n2” is not a meter; refer to meters as m and their number, e.g. m12.")]
    [InlineData("(m1 + m2", "The parenthesis at position 1 is never closed.")]
    [InlineData("m1 % m2", "“%” is not allowed in a formula (position 4).")]
    [InlineData("m1 + m3 + m99", "m99 is not a meter.")]
    [InlineData("m1 + m2 - m3", "Solar A (Generation) and House (Consumption) measure different things; to combine them, set the result to Net.")]
    [InlineData("m3 * m9", "Multiplying or dividing meters (House, Garage) gives a ratio: set the result to Indicator.")]
    [InlineData("5", "The formula refers to no meter; a number alone is not a meter.")]
    public void Validation_problems_read_as_sentences(string expression, string expected)
    {
        var catalog = Catalog();
        var validation = MeterDraftAnalysis.Validate(catalog, NewVirtual() with { Definition = new VirtualDefinition(expression, KindFor(expression)) });

        var texts = AnalysisUiTestData.In("en", () => validation.Problems.Select(p => MeterEditorText.Problem(p, Name(catalog))).ToList());
        Assert.Contains(expected, texts);
    }

    // ------------------------------------------------------------------------------------------------ totals override (D-23)

    [Fact]
    public void Always_on_a_breakdown_is_refused_naming_the_counted_parent()
    {
        var catalog = Catalog();
        var car = new MeterDraft(Car, "Car", 1, MeterMode.CumulativeCounter, "kWh");
        var overlay = MeterDraftAnalysis.Overlay(catalog, car, null);

        var always = MeterDraftAnalysis.CheckTotals(overlay, car, TotalsOverride.Always);
        Assert.False(always.IsAllowed);
        Assert.Equal(new TotalsConflict(TotalsConflictReason.OverlapsCountedMeter, House), always.Conflict);
        Assert.Equal(
            "“Always count” would count energy twice: House is already counted and overlaps this meter.",
            AnalysisUiTestData.In("en", () => MeterEditorText.Conflict(always.Conflict!, Name(catalog))));

        Assert.True(MeterDraftAnalysis.CheckTotals(overlay, car, TotalsOverride.Never).IsAllowed);
        Assert.True(MeterDraftAnalysis.CheckTotals(overlay, car, TotalsOverride.Auto).IsAllowed);

        // Unlinked from House in the dialog, the same meter is a root of its own and may be counted.
        var unlinked = car with { Upstream = [] };
        Assert.True(MeterDraftAnalysis.CheckTotals(MeterDraftAnalysis.Overlay(catalog, unlinked, null), unlinked, TotalsOverride.Always).IsAllowed);
    }

    [Fact]
    public void A_new_virtual_draft_is_laid_over_the_catalog_with_its_effective_definition()
    {
        var catalog = Catalog();
        var draft = NewVirtual() with { Definition = new VirtualDefinition("m1 + m2"), Upstream = [SolarA, SolarB] };
        var effective = MeterDraftAnalysis.Validate(catalog, draft).EffectiveDefinition!;

        var overlay = MeterDraftAnalysis.Overlay(catalog, draft, effective);

        var meter = overlay.Find(MeterDraft.NewMeterId)!;
        Assert.Equal(VirtualMeterStatus.Valid, meter.VirtualStatus);
        Assert.Equal(QuantityKind.Generation, meter.Quantity.Kind);
        Assert.Equal([SolarA, SolarB], overlay.Graph.DirectDependencies(MeterDraft.NewMeterId));
        Assert.Equal(2, overlay.Links.Count(l => l.ToMeterId == MeterDraft.NewMeterId));
        Assert.Equal(catalog.Meters.Count + 1, overlay.Meters.Count);
        Assert.Equal(MeterTotalsClass.AnalysisOnly, overlay.Totals.Meters[MeterDraft.NewMeterId].Class);

        // The stored catalog is untouched.
        Assert.Null(catalog.Find(MeterDraft.NewMeterId));
    }

    [Fact]
    public void The_totals_override_is_written_beside_every_other_key()
    {
        var meta = MeterDraftAnalysis.WithTotalsOverride("""{"role":"grid_import","expression":"m1"}""", TotalsOverride.Always);
        Assert.Equal(TotalsOverride.Always, TotalsOverrideTokens.FromMeta(meta));
        Assert.Equal("grid_import", MeterMeta.Role(meta));
        Assert.Contains("\"expression\":\"m1\"", meta, StringComparison.Ordinal);

        var auto = MeterDraftAnalysis.WithTotalsOverride(meta, TotalsOverride.Auto);
        Assert.DoesNotContain("totals", auto, StringComparison.Ordinal);
        Assert.Equal("grid_import", MeterMeta.Role(auto));

        Assert.Equal("""{"totals":"never"}""", MeterDraftAnalysis.WithTotalsOverride("not json", TotalsOverride.Never));
    }

    // ------------------------------------------------------------------------------------------------ helpers

    /// <summary>A declared kind where a case needs one: a product declared as consumption, a mixed sum declared as generation.</summary>
    private static QuantityKind? KindFor(string expression) => expression switch
    {
        "m1 + m2 - m3" => QuantityKind.Generation,
        _ when expression.Contains('*', StringComparison.Ordinal) => QuantityKind.Consumption,
        _ => null,
    };

    private static MeterDraft NewVirtual() => new(0, "New", 1, MeterMode.Virtual, "kWh");

    private static Func<int, string> Name(AnalysisCatalog catalog) =>
        id => catalog.Find(id)?.Name ?? (id == MeterDraft.NewMeterId ? "New" : CalculationDraft.Token(id));

    /// <summary>
    /// Two solar meters and their stored sum, a house with a garage and a car below it, water in another type, a
    /// calculation that is not a sum (half the house), an edited virtual meter another one reads, and a legacy sum.
    /// </summary>
    private static AnalysisCatalog Catalog()
    {
        static string Def(string expression, QuantityKind kind, string unit, VirtualCostRule rule) =>
            VirtualDefinitionJson.Write("{}", new VirtualDefinition(expression, kind, unit, rule));

        Meter M(int id, string name, MeterMode mode, string unit = "kWh", short type = 1, string meta = "{}") =>
            new() { Id = id, Name = name, EnergyTypeId = type, Mode = mode, Unit = unit, Meta = meta };

        var solarA = M(SolarA, "Solar A", MeterMode.GenerationCounter);
        solarA.InstalledAt = new DateOnly(2021, 3, 1);
        Meter[] meters =
        [
            solarA,
            M(SolarB, "Solar B", MeterMode.GenerationCounter),
            M(House, "House", MeterMode.CumulativeCounter),
            M(Water, "Water", MeterMode.CumulativeCounter, "m3", type: 2),
            M(SolarSum, "Solar sum", MeterMode.Virtual, meta: Def("m1 + m2", QuantityKind.Generation, "kWh", VirtualCostRule.None)),
            M(HalfHouse, "Half house", MeterMode.Virtual, meta: Def("0.5 * m3", QuantityKind.Consumption, "kWh", VirtualCostRule.None)),
            M(Draft, "Draft", MeterMode.Virtual, meta: Def("m1 + m2", QuantityKind.Generation, "kWh", VirtualCostRule.None)),
            M(ReadsDraft, "Reads draft", MeterMode.Virtual, meta: Def("m7", QuantityKind.Generation, "kWh", VirtualCostRule.None)),
            M(Garage, "Garage", MeterMode.CumulativeCounter),
            M(Car, "Car", MeterMode.CumulativeCounter),
            M(Legacy, "Legacy sum", MeterMode.Virtual),
        ];

        MeterLink[] links =
        [
            new() { FromMeterId = SolarA, ToMeterId = SolarSum },
            new() { FromMeterId = SolarB, ToMeterId = SolarSum },
            new() { FromMeterId = House, ToMeterId = Car },
            new() { FromMeterId = SolarA, ToMeterId = Legacy },
            new() { FromMeterId = SolarB, ToMeterId = Legacy },
        ];

        return AnalysisCatalog.Build(meters, [], links, [], AnalysisUiTestData.Berlin);
    }
}