package config

import (
	"os"
	"path/filepath"
	"reflect"
	"strings"
	"testing"
)

func TestExampleIsTheDefaults(t *testing.T) {
	path := filepath.Join(t.TempDir(), "steward.yaml")
	os.WriteFile(path, []byte(Example), 0o644)
	c, err := Load(path, false)
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(c, Default()) {
		t.Errorf("example differs from the defaults:\n%+v\n%+v", c, Default())
	}
}

func TestErrors(t *testing.T) {
	cases := map[string]string{
		"listen: []":                                "listen",
		"database: relative.db":                     "database",
		"session: {cookie_secure: x}":               "cookie_secure",
		"tls: {cert_file: /a}":                      "tls",
		"no_such_setting: 1":                        "no_such_setting",
		"backup: {retention: 3x}":                   "duration",
		"tls: {acme: {domain: dhcp.example.com}}":   "needs Jarl",
		"jarl: {server: https://dns.example.com}":   "token or token_file",
		"jarl: {server: dns.example.com, token: x}": "Jarl's URL",
		"{tls: {cert_file: /a, key_file: /b, acme: {domain: d.example.com}}, jarl: {server: https://j, token: x}}": "can't both",
		"{tls: {acme: {domain: '*.example.com'}}, jarl: {server: https://j, token: x}}":                            "full name",
		"{tls: {acme: {domain: d.example.com, directory: http://x}}, jarl: {server: https://j, token: x}}":         "https://",
	}
	for yml, want := range cases {
		path := filepath.Join(t.TempDir(), "s.yaml")
		os.WriteFile(path, []byte(yml), 0o644)
		if _, err := Load(path, false); err == nil || !strings.Contains(err.Error(), want) {
			t.Errorf("%q: %v", yml, err)
		}
	}
	if _, err := Load("/nonexistent/steward.yaml", true); err != nil {
		t.Errorf("missing file allowed: %v", err)
	}
}