Add sync message

Former-commit-id: d01f180941

olm/util.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/fosrl/newt/logger"
 	"github.com/fosrl/newt/network"
+	"github.com/fosrl/olm/peers"
 	"github.com/fosrl/olm/websocket"
 )
 
@@ -53,3 +54,45 @@ func GetNetworkSettingsJSON() (string, error) {
 func GetNetworkSettingsIncrementor() int {
 	return network.GetIncrementor()
 }
+
+// slicesEqual compares two string slices for equality (order-independent)
+func slicesEqual(a, b []string) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	// Create a map to count occurrences in slice a
+	counts := make(map[string]int)
+	for _, v := range a {
+		counts[v]++
+	}
+	// Check if slice b has the same elements
+	for _, v := range b {
+		counts[v]--
+		if counts[v] < 0 {
+			return false
+		}
+	}
+	return true
+}
+
+// aliasesEqual compares two Alias slices for equality (order-independent)
+func aliasesEqual(a, b []peers.Alias) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	// Create a map to count occurrences in slice a (using alias+address as key)
+	counts := make(map[string]int)
+	for _, v := range a {
+		key := v.Alias + "|" + v.AliasAddress
+		counts[key]++
+	}
+	// Check if slice b has the same elements
+	for _, v := range b {
+		key := v.Alias + "|" + v.AliasAddress
+		counts[key]--
+		if counts[key] < 0 {
+			return false
+		}
+	}
+	return true
+}