Initial code commit

internal/providers/namecheap/dns.go

@@ -0,0 +1,34 @@
+package namecheap
+
+import (
+	"fmt"
+	"time"
+)
+
+func (c *Client) WaitForDNSPropagation(domain, subdomain, expectedIP string, timeout time.Duration) error {
+	deadline := time.Now().Add(timeout)
+	backoff := 5 * time.Second
+	maxBackoff := 80 * time.Second
+
+	for {
+		if time.Now().After(deadline) {
+			return fmt.Errorf("timeout waiting for DNS propagation")
+		}
+
+		records, err := c.ListDNSRecords(domain)
+		if err != nil {
+			return fmt.Errorf("failed to check DNS records: %w", err)
+		}
+
+		for _, record := range records {
+			if record.Name == subdomain && record.Address == expectedIP {
+				return nil
+			}
+		}
+
+		time.Sleep(backoff)
+		if backoff < maxBackoff {
+			backoff *= 2
+		}
+	}
+}