u

assert.go

@@ -0,0 +1,41 @@
+package igdb
+
+import "fmt"
+
+func AssertSingle[T any](data any, err error) (*T, error) {
+	if err != nil {
+		return nil, err
+	}
+
+	if data == nil {
+		return nil, fmt.Errorf("data is nil")
+	}
+
+	datas, ok := data.([]*T)
+	if !ok {
+		return nil, fmt.Errorf("failed to convert to []*T")
+	}
+
+	if len(datas) == 0 {
+		return nil, fmt.Errorf("no results")
+	}
+
+	return datas[0], nil
+}
+
+func AssertSlice[T any](data any, err error) ([]*T, error) {
+	if err != nil {
+		return nil, err
+	}
+
+	if data == nil {
+		return nil, fmt.Errorf("data is nil")
+	}
+
+	datas, ok := data.([]*T)
+	if !ok {
+		return nil, fmt.Errorf("failed to convert to []*T")
+	}
+
+	return datas, nil
+}