feat(mongodb): fetch latest engine version (scaleway#2475)

Author: jremy42

api/mongodb/v1alpha1/mongodb_utils.go

@@ -1,6 +1,9 @@
 package mongodb
 
 import (
+	"context"
+	"fmt"
+	"sort"
 	"time"
 
 	"github.com/scaleway/scaleway-sdk-go/errors"
@@ -109,3 +112,20 @@ func (s *API) WaitForSnapshot(req *WaitForSnapshotRequest, opts ...scw.RequestOp
 	}
 	return snapshot.(*Snapshot), nil
 }
+
+func (s *API) FetchLatestEngineVersion() (*Version, error) {
+	resp, err := s.ListVersions(&ListVersionsRequest{}, scw.WithContext(context.Background()))
+	if err != nil {
+		return nil, fmt.Errorf("error fetching MongoDB versions: %w", err)
+	}
+
+	if len(resp.Versions) == 0 {
+		return nil, errors.New("no MongoDB versions found")
+	}
+
+	sort.Slice(resp.Versions, func(i, j int) bool {
+		return resp.Versions[i].Version > resp.Versions[j].Version
+	})
+
+	return resp.Versions[0], nil
+}