/*
Copyright 2022 The Flux authors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package manifestgen

import (
	"fmt"
	"os"
	"path/filepath"
)

// MkdirTempAbs creates a tmp dir and returns the absolute path to the dir.
// This is required since certain OSes like MacOS create temporary files in
// e.g. `/private/var`, to which `/var` is a symlink.
func MkdirTempAbs(dir, pattern string) (string, error) {
	tmpDir, err := os.MkdirTemp(dir, pattern)
	if err != nil {
		return "", err
	}
	tmpDir, err = filepath.EvalSymlinks(tmpDir)
	if err != nil {
		return "", fmt.Errorf("error evaluating symlink: %w", err)
	}
	return tmpDir, nil
}