65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
package api
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import (
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"fmt"
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)
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// ConnectionState represents device connection state and type,
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// as reported by mobile framework.
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//
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// Zero value represents default assumption about network (online and unknown type).
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type ConnectionState struct {
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Offline bool `json:"offline"`
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Type ConnectionType `json:"type"`
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Expensive bool `json:"expensive"`
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}
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// ConnectionType represents description of available
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// connection types as reported by React Native (see
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// https://facebook.github.io/react-native/docs/netinfo.html)
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// We're interested mainly in 'wifi' and 'cellular', but
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// other types are also may be used.
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type ConnectionType byte
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// NewConnectionType creates new ConnectionType from string.
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func NewConnectionType(s string) ConnectionType {
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switch s {
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case "cellular":
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return ConnectionCellular
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case "wifi":
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return ConnectionWifi
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}
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return ConnectionUnknown
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}
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// ConnectionType constants
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const (
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ConnectionUnknown ConnectionType = iota
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ConnectionCellular // cellular, LTE, 4G, 3G, EDGE, etc.
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ConnectionWifi // WIFI or iOS simulator
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)
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// String formats ConnectionState for logs. Implements Stringer.
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func (c ConnectionState) String() string {
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if c.Offline {
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return "offline"
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}
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var typ string
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switch c.Type {
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case ConnectionWifi:
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typ = "wifi"
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case ConnectionCellular:
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typ = "cellular"
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default:
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typ = "unknown"
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}
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if c.Expensive {
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return fmt.Sprintf("%s (expensive)", typ)
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}
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return typ
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}
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