feat: add dashed lines to computed relations

dot.go

@@ -71,7 +71,7 @@ func (g *dotEncodingGraph) AddOrGetNode(label string) graph.Node {
 	return n
 }
 
-func (g *dotEncodingGraph) AddEdge(from, to string, optionalHeadLabel string) graph.Line {
+func (g *dotEncodingGraph) AddEdge(from, to string, optionalHeadLabel, optionalStyle string) graph.Line {
 	n1 := g.AddOrGetNode(from)
 	n2 := g.AddOrGetNode(to)
 	existingLinesIter := g.Lines(n1.ID(), n2.ID())
@@ -91,6 +91,7 @@ func (g *dotEncodingGraph) AddEdge(from, to string, optionalHeadLabel string) gr
 	g.DirectedGraph.SetLine(edge)
 	edge.attrs["label"] = strconv.Itoa(g.edgeCounter)
 	edge.attrs["headlabel"] = optionalHeadLabel
+	edge.attrs["style"] = optionalStyle
 	g.lines[edge.ID()] = edge.attrs
 	return &dotLine{
 		Line:  edge,

writer.go

@@ -72,17 +72,17 @@ func rewriteHandler(typesys *typesystem.TypeSystem, g *dotEncodingGraph, typeNam
 					if assignableRelationRef != "" {
 						assignableRelationNodeName := fmt.Sprintf("%s#%s", assignableType, assignableRelationRef)
 
-						g.AddEdge(assignableRelationNodeName, relationNodeName, "")
+						g.AddEdge(assignableRelationNodeName, relationNodeName, "", "")
 					}
 
 					wildcardRelationRef := assignableRelation.GetWildcard()
 					if wildcardRelationRef != nil {
 						wildcardRelationNodeName := fmt.Sprintf("%s:*", assignableType)
 
-						g.AddEdge(wildcardRelationNodeName, relationNodeName, "")
+						g.AddEdge(wildcardRelationNodeName, relationNodeName, "", "")
 					}
 				} else {
-					g.AddEdge(assignableType, relationNodeName, "")
+					g.AddEdge(assignableType, relationNodeName, "", "")
 				}
 			}
 		case *openfgav1.Userset_ComputedUserset:
@@ -93,7 +93,7 @@ func rewriteHandler(typesys *typesystem.TypeSystem, g *dotEncodingGraph, typeNam
 			}
 
 			rewrittenNodeName := fmt.Sprintf("%s#%s", typeName, rewritten.GetName())
-			g.AddEdge(rewrittenNodeName, relationNodeName, "")
+			g.AddEdge(rewrittenNodeName, relationNodeName, "", "dashed")
 		case *openfgav1.Userset_TupleToUserset:
 			tupleset := rw.TupleToUserset.GetTupleset().GetRelation()
 			rewrittenRelation := rw.TupleToUserset.GetComputedUserset().GetRelation()
@@ -113,7 +113,7 @@ func rewriteHandler(typesys *typesystem.TypeSystem, g *dotEncodingGraph, typeNam
 				rewrittenNodeName := fmt.Sprintf("%s#%s", assignableType, rewrittenRelation)
 				conditionedOnNodeName := fmt.Sprintf("(%s#%s)", typeName, tuplesetRel.GetName())
 
-				g.AddEdge(rewrittenNodeName, relationNodeName, conditionedOnNodeName)
+				g.AddEdge(rewrittenNodeName, relationNodeName, conditionedOnNodeName, "")
 			}
 		case *openfgav1.Userset_Union:
 		case *openfgav1.Userset_Intersection: