package quality

import (
	
	
	

	
	
)

// Metrics describe a positioned drawing for bounded repair triggers and safety
// checks. They are not weights or ordering components in the layout score.
// Obstruction measurements cover rectangular shapes and polygonal routes only.
type Metrics struct {
	NodeOverlaps, RouteObstructions int64
	TextOcclusions                  int64
	Crossings, Detour, RouteLength  float64
}

// Inspect reads diagnostics without mutating the graph or influencing Score.
func ( context.Context,  *layoutgraph.Graph) (Metrics, error) {
	, ,  := inspectWithLimit(, , maxEvaluationWorkUnits)
	return , 
}

func inspectWithLimit( context.Context,  *layoutgraph.Graph,  int64) (Metrics, int64, error) {
	if  == nil {
		return Metrics{}, 0, fmt.Errorf("cannot evaluate a nil graph")
	}
	if  := layoutgraph.ValidatePositionedGraph(, "Inspect", );  != nil {
		return Metrics{}, 0, 
	}
	,  := limits.NewWorkGuard(, "Inspect", )
	if  != nil {
		return Metrics{}, 0, 
	}
	var  Metrics
	 := func( error) (Metrics, int64, error) { return Metrics{}, .Used(),  }
	// Normalize by typical noncontainer dimensions, rather than drawing bounds:
	// opening empty space or expanding a container cannot make wire cheaper.
	,  := 0.0, 0
	for ,  := range .Nodes {
		if  := .Step();  != nil {
			return ()
		}
		if !.IsContainer() && !.IsInvisible {
			 += (.Width + .Height) / 2
			++
		}
	}
	 = math.Max(1, /float64(max(1, )))
	 := make([]*layoutgraph.Edge, 0, len(.Edges))
	for ,  := range .Edges {
		if  := .Step();  != nil {
			return ()
		}
		if .IsInvisible {
			continue
		}
		 = append(, )
		 := 0.0
		for  := 1;  < len(.Points); ++ {
			if  := .Step();  != nil {
				return ()
			}
			,  := .Points[-1], .Points[]
			 += math.Hypot(.X-.X, .Y-.Y)
		}
		.RouteLength +=  / 
		if len(.Points) < 2 || .IsLoop() {
			continue
		}
		,  := .Points[0], .Points[len(.Points)-1]
		 := math.Abs(.X-.X) + math.Abs(.Y-.Y)
		.Detour += math.Max(0, -) / math.Max(, )

	}
	,  := countNonSharedCrossings(, )
	if  != nil {
		return ()
	}
	.Crossings = float64()
	if  := measureGeometry(, &, );  != nil {
		return ()
	}
	if  := measureLabels(, &, );  != nil {
		return ()
	}
	if !finite(.RouteLength) || !finite(.Detour) {
		return (fmt.Errorf("TALA Inspect produced non-finite geometry"))
	}
	if  := .Finish();  != nil {
		return ()
	}
	return , .Used(), nil
}