package fsutils

import (
	`errors`
	`fmt`
	`os`
	`os/user`
	`testing`

	`r00t2.io/sysutils/paths`
)

var (
	testFilename   string = "testfile"
	testErrBadUser error  = errors.New("test must be run as root, on Linux")
)

func testChkUser() (err error) {
	var u *user.User

	if u, err = user.Current(); err != nil {
		return
	}
	if u.Uid != "0" {
		err = testErrBadUser
		return
	}
	return
}

func TestSetAttrs(t *testing.T) {

	var err error
	var attrs *FsAttrs

	if attrs, err = GetAttrs(testFilename); err != nil {
		t.Fatalf("Failed to get attrs for %v: %v", testFilename, err)
	}
	t.Logf("Attrs for %v:\n%#v", testFilename, attrs)
	attrs.CompressFile = true
	if err = attrs.Apply(testFilename); err != nil {
		t.Fatalf("Failed to apply attrs to %v: %v", testFilename, err)
	}
	t.Logf("Applied new attrs to %v:\n%#v", testFilename, attrs)
}

func TestMain(t *testing.M) {

	var err error
	var rslt int

	if err = testChkUser(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	if err = paths.RealPath(&testFilename); err != nil {
		fmt.Println(err)
		os.Exit(2)
	}
	if err = os.WriteFile(testFilename, []byte("This is a test file."), 0o0644); err != nil {
		fmt.Println(err)
		os.Exit(3)
	}

	rslt = t.Run()

	if err = os.Remove(testFilename); err != nil {
		fmt.Printf("Failed to remove test file %v: %v", testFilename, err)
	}
	os.Exit(rslt)
}