// Copyright (c) 2026 Storm Dragon
// SPDX-License-Identifier: GPL-3.0-or-later

package config

import (
	"path/filepath"
	"testing"
)

func TestDateTimePresetsValidateAndRoundTrip(t *testing.T) {
	settings := Defaults()
	settings.Presentation.DateTime = DateTime{TimeFormat: "12-hour-seconds", DateFormat: "full-dmy"}
	path := filepath.Join(t.TempDir(), "settings.toml")
	if err := Save(path, settings); err != nil {
		t.Fatal(err)
	}
	loaded, _, err := Load(path, nil)
	if err != nil || loaded.Presentation.DateTime != settings.Presentation.DateTime {
		t.Fatal(loaded, err)
	}
	for _, value := range []string{"", "unknown", "%H:%M"} {
		for _, date := range []bool{false, true} {
			invalid := Defaults()
			if date {
				invalid.Presentation.DateTime.DateFormat = value
			} else {
				invalid.Presentation.DateTime.TimeFormat = value
			}
			if invalid.Validate() == nil {
				t.Fatal("invalid format accepted", date, value)
			}
		}
	}
}