presence

func (ActionFunc) Status ¶

func (a ActionFunc) Status(mac string, found bool)

Status is called with the status of the given MAC address

func (*HCITool) IsPresent ¶

func (h *HCITool) IsPresent(ctx context.Context, mac string) (bool, error)

IsPresent checks if bluetooth device with given MAC address can be found

func (*Presence) RegisterAction ¶

func (p *Presence) RegisterAction(mac string, actions ...Action)

RegisterAction registers one ore more actions for a certain MAC address.

Note: Given actions are added to already existing registered actions for given MAC address.

func (*Presence) Scan ¶

func (p *Presence) Scan(ctx context.Context)

Scan executes a single presence check for all registered MAC addresses and calls action functions with the scan result.

mockBTScanner := &MockBTScanner{
	config: map[string]struct {
		found bool
		err   error
	}{
		"mymac":  {true, nil},
		"mymac2": {false, nil},
	},
}
p := New(mockBTScanner)

p.RegisterAction("mymac", ActionFunc(func(mac string, present bool) {
	fmt.Printf("%s found: %t\n", mac, present)
}))

p.RegisterAction("mymac", ActionFunc(func(mac string, present bool) {
	fmt.Printf("%s found: %t\n", mac, present)
}))

p.RegisterAction("mymac2", ActionFunc(func(mac string, present bool) {
	fmt.Printf("%s found: %t\n", mac, present)
}))

p.Scan(context.Background())

Output:

mymac2 found: false
mymac found: true
mymac found: true

func (*Presence) ScanPeriodically ¶

func (p *Presence) ScanPeriodically(ctx context.Context, interval time.Duration)

ScanPeriodically will call Scan periodically with a given interval after a run cycle has finished

func (*Presence) UnregisterActions ¶

func (p *Presence) UnregisterActions(mac string)

UnregisterActions removes all registered actions for a given MAC address

If no actions are registered, this method is a no-op.