namespace StellaOps.ElkSharp;

internal static partial class ElkEdgeRouterIterative
{
    private static ElkRoutedEdge[] ApplyTerminalRuleCleanupRound(
        ElkRoutedEdge[] edges,
        ElkPositionedNode[] nodes,
        ElkLayoutDirection direction,
        double minLineClearance,
        IReadOnlyCollection<string>? restrictedEdgeIds = null)
    {
        var result = edges;
        result = ElkEdgePostProcessor.SeparateSharedLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateRepeatCollectorLocalLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.PreferShortestBoundaryShortcuts(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        result = ElkEdgePostProcessor.ElevateRepeatCollectorNodeClearanceViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkRepeatCollectorCorridors.SeparateSharedLanes(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadSourceDepartureJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateMixedNodeFaceLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadRectTargetApproachFeederBands(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.FinalizeDecisionTargetEntries(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.FinalizeGatewayBoundaryGeometry(result, nodes, restrictedEdgeIds);
        result = ClampBelowGraphEdges(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.AvoidNodeCrossings(result, nodes, direction, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        result = ElkEdgePostProcessor.SeparateSharedLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadSourceDepartureJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.FinalizeGatewayBoundaryGeometry(result, nodes, restrictedEdgeIds);
        result = ClampBelowGraphEdges(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.AvoidNodeCrossings(result, nodes, direction, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        // Final late-stage verification: source/target boundary normalization can collapse
        // lanes back onto the same node face, so restabilize the local geometry once more.
        result = ElkEdgePostProcessor.SpreadSourceDepartureJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateMixedNodeFaceLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadRectTargetApproachFeederBands(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateSharedLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ClampBelowGraphEdges(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.AvoidNodeCrossings(result, nodes, direction, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        result = ElkEdgePostProcessor.SpreadSourceDepartureJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateMixedNodeFaceLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadRectTargetApproachFeederBands(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateSharedLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateMixedNodeFaceLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SeparateSharedLaneConflicts(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.ElevateRepeatCollectorNodeClearanceViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.ElevateUnderNodeViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.PreferShortestBoundaryShortcuts(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadRectTargetApproachFeederBands(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.ElevateUnderNodeViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.FinalizeGatewayBoundaryGeometry(result, nodes, restrictedEdgeIds);
        result = ClampBelowGraphEdges(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.AvoidNodeCrossings(result, nodes, direction, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadRectTargetApproachFeederBands(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.ElevateUnderNodeViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        // Final hard-rule restabilization after the last normalize pass: the final
        // boundary normalization can still pull target slots and horizontal lanes back
        // into a bad state, so re-apply the local rule fixers once more before scoring.
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);
        result = ElkEdgePostProcessor.RepairBoundaryAnglesAndTargetApproaches(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadTargetApproachJoins(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SpreadRectTargetApproachFeederBands(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.ElevateRepeatCollectorNodeClearanceViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.ElevateUnderNodeViolations(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ClampBelowGraphEdges(result, nodes, restrictedEdgeIds);
        result = ElkEdgePostProcessor.AvoidNodeCrossings(result, nodes, direction, restrictedEdgeIds);
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = CloseRemainingTerminalViolations(result, nodes, direction, minLineClearance, restrictedEdgeIds);
        var lateDetourShortcuts = ElkEdgePostProcessor.PreferShortestBoundaryShortcuts(result, nodes, restrictedEdgeIds);
        result = ElkEdgeRoutingScoring.CountBoundarySlotViolations(result, nodes) > 0
            ? ChoosePreferredBoundarySlotRepairLayout(result, lateDetourShortcuts, nodes)
            : ChoosePreferredHardRuleLayout(result, lateDetourShortcuts, nodes);
        result = ApplyFinalDetourPolish(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SnapBoundarySlotAssignments(
            result,
            nodes,
            minLineClearance,
            restrictedEdgeIds,
            enforceAllNodeEndpoints: true);
        result = ApplyPostSlotDetourClosure(result, nodes, minLineClearance, restrictedEdgeIds);
        result = ElkEdgePostProcessor.SnapBoundarySlotAssignments(
            result,
            nodes,
            minLineClearance,
            restrictedEdgeIds,
            enforceAllNodeEndpoints: true);
        return result;
    }
}