// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: MIT

package main

import (
	"bytes"
	"strings"
	"testing"
)

func TestRunPrintsConfigAndMarshal(t *testing.T) {
	var stdout, stderr bytes.Buffer
	if code := Run(&stdout, &stderr); code != 0 {
		t.Fatalf("Run returned %d, stderr = %q", code, stderr.String())
	}
	got := stdout.String()
	for _, want := range []string{
		"title:    interpres demo",
		"launched: 2024-11-04T09:00:00Z",
		"debug:    false",
		"server:   127.0.0.1:9090",
		"user:     petr",
		"admin=true",
		"admin=false",
		"--- marshal (group by kind, default) ---",
		`title = "interpres demo"`,
		"--- marshal (GroupByKind=false) ---",
		"[server]",
		"port = 9090",
		"[[users]]",
		"--- round-trip ---",
	} {
		if !strings.Contains(got, want) {
			t.Errorf("output missing %q\n----\n%s", want, got)
		}
	}
}

func TestRunMarshalerFieldRendersAsScalar(t *testing.T) {
	// The Port Marshaler hook returns a string, so the field becomes a
	// scalar "9000:9001" inside [srv] rather than an integer.
	var stdout, stderr bytes.Buffer
	if code := Run(&stdout, &stderr); code != 0 {
		t.Fatalf("Run returned %d, stderr = %q", code, stderr.String())
	}
	for _, want := range []string{
		`port = "9000:9001"`,
		`addr = "10.0.0.1:8080"`,
		`tag = "primary"`,
	} {
		if !strings.Contains(stdout.String(), want) {
			t.Errorf("output missing %q\n----\n%s", want, stdout.String())
		}
	}
}