add apt gestion

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

internal/clone/apt/helpers.go

@@ -0,0 +1,44 @@
+package apt
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+)
+
+// fetchBytes performs a GET request and returns the response body.
+func fetchBytes(ctx context.Context, httpClient *http.Client, url string) ([]byte, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("HTTP %d for %s", resp.StatusCode, url)
+	}
+	return io.ReadAll(resp.Body)
+}
+
+// atomicWrite writes data to path via a temporary file and an atomic rename.
+func atomicWrite(path string, data []byte) error {
+	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
+		return err
+	}
+	tmp := path + ".tmp"
+	if err := os.WriteFile(tmp, data, 0o644); err != nil {
+		return err
+	}
+	if err := os.Rename(tmp, path); err != nil {
+		os.Remove(tmp)
+		return err
+	}
+	return nil
+}