Added debit settlement amount calculation

api/gateway/tron/shared/network_registry.go

@@ -0,0 +1,36 @@
+package shared
+
+import "strings"
+
+// NetworkRegistry provides network configuration lookup by name.
+type NetworkRegistry struct {
+	networks map[string]Network
+}
+
+// NewNetworkRegistry creates a NetworkRegistry from a slice of network configs.
+func NewNetworkRegistry(networks []Network) *NetworkRegistry {
+	m := make(map[string]Network, len(networks))
+	for _, n := range networks {
+		if n.Name.IsValid() {
+			m[strings.ToLower(n.Name.String())] = n
+		}
+	}
+	return &NetworkRegistry{networks: m}
+}
+
+// Network returns the configuration for the named network.
+func (r *NetworkRegistry) Network(name string) (Network, bool) {
+	if r == nil || r.networks == nil {
+		return Network{}, false
+	}
+	n, ok := r.networks[strings.ToLower(strings.TrimSpace(name))]
+	return n, ok
+}
+
+// Networks returns all configured networks.
+func (r *NetworkRegistry) Networks() map[string]Network {
+	if r == nil {
+		return nil
+	}
+	return r.networks
+}