tried stuff - nothing works yet

11/main.go

@@ -0,0 +1,90 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+
+	"git.z1glr.de/advent-of-code-2025/pkg/aoc"
+)
+
+type Server struct {
+	Start, Out   bool
+	Destinations map[string]*Server
+}
+
+func (s *Server) Walk() int {
+	if s.Out {
+		return 1
+	} else {
+		routes := 0
+
+		for _, dd := range s.Destinations {
+			routes += dd.Walk()
+		}
+
+		return routes
+	}
+}
+
+func ParseServerLine(s string) (*Server, string) {
+	stringFields := strings.Fields(s)
+
+	returnServer := Server{
+		Destinations: make(map[string]*Server),
+	}
+
+	for _, ff := range stringFields[1:] {
+		switch ff {
+		case "you":
+			returnServer.Start = true
+		case "out":
+			returnServer.Out = true
+		default:
+			returnServer.Destinations[ff] = nil
+		}
+	}
+
+	return &returnServer, stringFields[0][:len(stringFields[0])-1]
+}
+
+func do(test bool) (int, int) {
+	rows := aoc.ReadFileRows(test)
+
+	servers := make(map[string]*Server)
+
+	starts := []*Server{}
+
+	for _, rr := range rows {
+		thisServer, name := ParseServerLine(rr)
+
+		servers[name] = thisServer
+
+		if thisServer.Start {
+			starts = append(starts, thisServer)
+		}
+	}
+
+	// populate destinations
+	for ii := range servers {
+		ss := servers[ii]
+		for dd := range ss.Destinations {
+			ss.Destinations[dd] = servers[dd]
+		}
+	}
+
+	routes := 0
+
+	for _, ss := range starts[:1] {
+		routes += ss.Walk()
+	}
+
+	fmt.Println(routes)
+
+	return routes, 0
+}
+
+func main() {
+	if r1, r2 := do(true); r1 == 5 && r2 == 0 {
+		do(false)
+	}
+}