hetzner: improve zone ID detection (#1815)

providers/dns/hetzner/internal/client.go

@@ -129,7 +129,7 @@ func (c *Client) DeleteRecord(recordID string) error {
 
 // GetZoneID gets the zone ID for a domain.
 func (c *Client) GetZoneID(domain string) (string, error) {
-	zones, err := c.getZones()
+	zones, err := c.getZones(domain)
 	if err != nil {
 		return "", err
 	}
@@ -144,17 +144,26 @@ func (c *Client) GetZoneID(domain string) (string, error) {
 }
 
 // https://dns.hetzner.com/api-docs#operation/GetZones
-func (c *Client) getZones() (*Zones, error) {
+func (c *Client) getZones(name string) (*Zones, error) {
 	endpoint, err := c.createEndpoint("api", "v1", "zones")
 	if err != nil {
 		return nil, fmt.Errorf("failed to create endpoint: %w", err)
 	}
 
+	query := endpoint.Query()
+	query.Set("name", name)
+	endpoint.RawQuery = query.Encode()
+
 	resp, err := c.do(http.MethodGet, endpoint, nil)
 	if err != nil {
 		return nil, fmt.Errorf("could not get zones: %w", err)
 	}
 
+	// EOF fallback
+	if resp.StatusCode == http.StatusNotFound {
+		return &Zones{}, nil
+	}
+
 	if resp.StatusCode != http.StatusOK {
 		return nil, fmt.Errorf("could not get zones: %s", resp.Status)
 	}

providers/dns/hetzner/internal/types.go

@@ -25,4 +25,18 @@ type Zone struct {
 // Zones a set of DNS zones.
 type Zones struct {
 	Zones []Zone `json:"zones"`
+	Meta  Meta   `json:"meta,omitempty"`
+}
+
+// Meta response metadata.
+type Meta struct {
+	Pagination Pagination `json:"pagination,omitempty"`
+}
+
+// Pagination information about pagination.
+type Pagination struct {
+	Page         int `json:"page,omitempty" url:"page"`
+	PerPage      int `json:"per_page,omitempty" url:"per_page"`
+	LastPage     int `json:"last_page,omitempty" url:"-"`
+	TotalEntries int `json:"total_entries,omitempty" url:"-"`
 }