package render

import (
	"bytes"
	"fmt"
	"strings"

	corev1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"sigs.k8s.io/yaml"
)

func renderObjects(objs []runtime.Object) (string, error) {
	var buf bytes.Buffer

	for i, obj := range objs {
		if i > 0 {
			if _, err := fmt.Fprintln(&buf, "---"); err != nil {
				return "", err
			}
		}

		b, err := renderObjectYAML(obj)
		if err != nil {
			return "", err
		}

		if _, err := buf.Write(b); err != nil {
			return "", err
		}
	}

	return buf.String(), nil
}

func renderObjectYAML(obj runtime.Object) ([]byte, error) {
	b, err := yaml.Marshal(obj)
	if err != nil {
		return nil, err
	}

	var m map[string]any
	if err := yaml.Unmarshal(b, &m); err != nil {
		return nil, err
	}

	delete(m, "status")

	return yaml.Marshal(m)
}

func imagePullSecrets(names []string) []corev1.LocalObjectReference {
	if len(names) == 0 {
		return nil
	}

	refs := make([]corev1.LocalObjectReference, 0, len(names))
	for _, name := range names {
		name = strings.TrimSpace(name)
		if name == "" {
			continue
		}

		refs = append(refs, corev1.LocalObjectReference{
			Name: name,
		})
	}

	if len(refs) == 0 {
		return nil
	}

	return refs
}