package database import ( "fmt" "reflect" "go.mongodb.org/mongo-driver/bson/primitive" "go.mongodb.org/mongo-driver/mongo/options" "github.com/mainnika/mongox-go-driver/v2/mongox/base" ) // DeleteArray removes documents list from a database by their ids func (d *Database) DeleteArray(target interface{}) error { targetV := reflect.ValueOf(target) targetT := targetV.Type() targetK := targetV.Kind() if targetK != reflect.Ptr { panic(fmt.Errorf("target is not a ptr")) } targetSliceV := targetV.Elem() targetSliceT := targetT.Elem() if targetSliceT.Kind() != reflect.Slice { panic(fmt.Errorf("target should be a ptr to a slice")) } targetSliceElemT := targetSliceT.Elem() if targetSliceElemT.Kind() != reflect.Ptr { panic(fmt.Errorf("target slice should contain ptrs")) } zeroElem := reflect.Zero(targetSliceElemT) targetLen := targetSliceV.Len() collection := d.GetCollectionOf(zeroElem.Interface()) opts := options.Delete() ids := primitive.A{} for i := 0; i < targetLen; i++ { elem := targetSliceV.Index(i) ids = append(ids, base.GetID(elem.Interface())) } if len(ids) == 0 { return fmt.Errorf("can't delete zero elements") } result, err := collection.DeleteMany(d.Context(), primitive.M{"_id": primitive.M{"$in": ids}}, opts) if err != nil { return fmt.Errorf("can't create find and delete result: %w", err) } if result.DeletedCount != int64(targetLen) { return fmt.Errorf("can't verify delete result: removed count mismatch %d != %d", result.DeletedCount, targetLen) } return nil }