namespace StellaOps.ElkSharp;

internal static partial class ElkEdgeRouterIterative
{
    private static ElkRoutedEdge[] ApplyBoundaryFirstVerification(
        ElkRoutedEdge[] edges,
        ElkRoutedEdge[] originalEdges,
        ElkPositionedNode[] nodes,
        ElkLayoutDirection direction,
        double minLineClearance)
    {
        // Minimal structural safety only — the hybrid winner refinement
        // handles remaining violations after boundary-first is promoted.
        var result = ElkEdgePostProcessor.AvoidNodeCrossings(edges, nodes, direction);
        result = ElkEdgePostProcessor.EliminateDiagonalSegments(result, nodes);
        result = ElkEdgePostProcessorSimplify.SimplifyEdgePaths(result, nodes);
        result = ElkEdgePostProcessorSimplify.TightenOuterCorridors(result, nodes);
        if (HighwayProcessingEnabled)
        {
            result = ElkEdgeRouterHighway.BreakShortHighways(result, nodes);
        }

        // Normalize boundary geometry for the slot-pinned endpoints.
        result = ElkEdgePostProcessor.NormalizeBoundaryAngles(result, nodes);
        result = ElkEdgePostProcessor.NormalizeSourceExitAngles(result, nodes);

        // Collector-specific structural repairs.
        result = RestoreProtectedRepeatCollectorCorridors(result, originalEdges, nodes);

        // Below-graph clamping and final crossing check.
        result = ClampBelowGraphEdges(result, nodes);
        result = ElkEdgePostProcessor.AvoidNodeCrossings(result, nodes, direction);

        return result;
    }
}