init

Signed-off-by: Hadi <[email protected]>

internal/bluetooth/controller.go

@@ -0,0 +1,61 @@
+package bluetooth
+
+import "strings"
+
+// ControllerInfo is the state of the default Bluetooth adapter, as reported
+// by `bluetoothctl show`.
+type ControllerInfo struct {
+	Address      string
+	Name         string
+	Powered      bool
+	Discoverable bool
+	Pairable     bool
+	Discovering  bool
+}
+
+// ShowController returns the state of the default Bluetooth controller.
+func ShowController() (ControllerInfo, error) {
+	out, err := run(defaultTimeout, "show")
+	if err != nil {
+		return ControllerInfo{}, err
+	}
+
+	var c ControllerInfo
+	for _, line := range strings.Split(out, "\n") {
+		line = strings.TrimSpace(line)
+		if rest, ok := strings.CutPrefix(line, "Controller "); ok {
+			if fields := strings.Fields(rest); len(fields) > 0 {
+				c.Address = fields[0]
+			}
+			continue
+		}
+		key, value, ok := strings.Cut(line, ":")
+		if !ok {
+			continue
+		}
+		value = strings.TrimSpace(value)
+		switch strings.TrimSpace(key) {
+		case "Name":
+			c.Name = value
+		case "Powered":
+			c.Powered = value == "yes"
+		case "Discoverable":
+			c.Discoverable = value == "yes"
+		case "Pairable":
+			c.Pairable = value == "yes"
+		case "Discovering":
+			c.Discovering = value == "yes"
+		}
+	}
+	return c, nil
+}
+
+// SetPower turns the Bluetooth controller on or off entirely.
+func SetPower(on bool) error {
+	state := "off"
+	if on {
+		state = "on"
+	}
+	_, err := run(defaultTimeout, "power", state)
+	return err
+}