Added project files

internal/client.go

@@ -0,0 +1,54 @@
+package configurator
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+)
+
+type SmdClient struct {
+	http.Client
+	Host        string
+	Port        int
+	AccessToken string
+}
+
+func (client *SmdClient) FetchDNS(config *Config) error {
+	// fetch DNS related information from SMD's endpoint:
+	return nil
+}
+
+func (client *SmdClient) FetchEthernetInterfaces() ([]EthernetInterface, error) {
+	if client == nil {
+		return nil, fmt.Errorf("client is nil")
+	}
+	// fetch DHCP related information from SMD's endpoint:
+	url := fmt.Sprintf("%s:%d/hsm/v2/Inventory/EthernetInterfaces", client.Host, client.Port)
+	req, err := http.NewRequest(http.MethodGet, url, bytes.NewBuffer([]byte{}))
+
+	// include access token in authorzation header if found
+	if client.AccessToken != "" {
+		req.Header.Add("Authorization", "Bearer "+client.AccessToken)
+	}
+	if err != nil {
+		return nil, fmt.Errorf("failed to create new HTTP request: %v", err)
+	}
+	res, err := client.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to make request: %v", err)
+	}
+
+	b, err := io.ReadAll(res.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read HTTP response: %v", err)
+	}
+
+	// unmarshal JSON and extract
+	eths := []EthernetInterface{} // []map[string]any{}
+	json.Unmarshal(b, &eths)
+	fmt.Printf("ethernet interfaces: %v\n", string(b))
+
+	return eths, nil
+}