feat: Waku v2 bridge

Issue #12610

vendor/github.com/status-im/status-go/connection/state.go

@@ -0,0 +1,76 @@
+package connection
+
+import (
+	"fmt"
+)
+
+// State represents device connection state and type,
+// as reported by mobile framework.
+//
+// Zero value represents default assumption about network (online and unknown type).
+type State struct {
+	Offline   bool `json:"offline"`
+	Type      Type `json:"type"`
+	Expensive bool `json:"expensive"`
+}
+
+// Type represents description of available
+// connection types as reported by React Native (see
+// https://facebook.github.io/react-native/docs/netinfo.html)
+// We're interested mainly in 'wifi' and 'cellular', but
+// other types are also may be used.
+type Type byte
+
+const (
+	Offline  = "offline"
+	Wifi     = "wifi"
+	Cellular = "cellular"
+	Unknown  = "unknown"
+	None     = "none"
+)
+
+// NewType creates new Type from string.
+func NewType(s string) Type {
+	switch s {
+	case Cellular:
+		return connectionCellular
+	case Wifi:
+		return connectionWifi
+	}
+
+	return connectionUnknown
+}
+
+// Type constants
+const (
+	connectionUnknown  Type = iota
+	connectionCellular      // cellular, LTE, 4G, 3G, EDGE, etc.
+	connectionWifi          // WIFI or iOS simulator
+)
+
+func (c State) IsExpensive() bool {
+	return c.Expensive || c.Type == connectionCellular
+}
+
+// string formats ConnectionState for logs. Implements Stringer.
+func (c State) String() string {
+	if c.Offline {
+		return Offline
+	}
+
+	var typ string
+	switch c.Type {
+	case connectionWifi:
+		typ = Wifi
+	case connectionCellular:
+		typ = Cellular
+	default:
+		typ = Unknown
+	}
+
+	if c.Expensive {
+		return fmt.Sprintf("%s (expensive)", typ)
+	}
+
+	return typ
+}