implement dca commands:

- DCA added to Client struct
- dca command added to both CLIs

help mds updated

internal/xair/dca.go

@@ -0,0 +1,95 @@
+package xair
+
+import "fmt"
+
+type DCA struct {
+	client      *Client
+	baseAddress string
+}
+
+// newDCA creates a new DCA instance
+func newDCA(c *Client) *DCA {
+	return &DCA{
+		client:      c,
+		baseAddress: c.addressMap["dca"],
+	}
+}
+
+// Mute requests the current mute status for a DCA group
+func (d *DCA) Mute(group int) (bool, error) {
+	address := fmt.Sprintf(d.baseAddress, group) + "/on"
+	err := d.client.SendMessage(address)
+	if err != nil {
+		return false, err
+	}
+
+	msg, err := d.client.ReceiveMessage()
+	if err != nil {
+		return false, err
+	}
+	val, ok := msg.Arguments[0].(int32)
+	if !ok {
+		return false, fmt.Errorf("unexpected argument type for DCA mute value")
+	}
+	return val == 0, nil
+}
+
+// SetMute sets the mute status for a specific DCA group (1-based indexing)
+func (d *DCA) SetMute(group int, muted bool) error {
+	address := fmt.Sprintf(d.baseAddress, group) + "/on"
+	var value int32
+	if !muted {
+		value = 1
+	}
+	return d.client.SendMessage(address, value)
+}
+
+// Name requests the current name for a DCA group
+func (d *DCA) Name(group int) (string, error) {
+	address := fmt.Sprintf(d.baseAddress, group) + "/config/name"
+	err := d.client.SendMessage(address)
+	if err != nil {
+		return "", err
+	}
+
+	msg, err := d.client.ReceiveMessage()
+	if err != nil {
+		return "", err
+	}
+	name, ok := msg.Arguments[0].(string)
+	if !ok {
+		return "", fmt.Errorf("unexpected argument type for DCA name value")
+	}
+	return name, nil
+}
+
+// SetName sets the name for a specific DCA group (1-based indexing)
+func (d *DCA) SetName(group int, name string) error {
+	address := fmt.Sprintf(d.baseAddress, group) + "/config/name"
+	return d.client.SendMessage(address, name)
+}
+
+// Color requests the current color for a DCA group
+func (d *DCA) Color(group int) (int32, error) {
+	address := fmt.Sprintf(d.baseAddress, group) + "/config/color"
+	err := d.client.SendMessage(address)
+	if err != nil {
+		return 0, err
+	}
+
+	msg, err := d.client.ReceiveMessage()
+	if err != nil {
+		return 0, err
+	}
+	color, ok := msg.Arguments[0].(int32)
+	if !ok {
+		return 0, fmt.Errorf("unexpected argument type for DCA color value")
+	}
+	return color, nil
+}
+
+// SetColor sets the color for a specific DCA group (1-based indexing)
+func (d *DCA) SetColor(group int, color int32) error {
+	address := fmt.Sprintf(d.baseAddress, group) + "/config/color"
+	return d.client.SendMessage(address, color)
+}