package config

import (
	"bytes"
	"log/slog"
	"reflect"
	"testing"

	"github.com/stretchr/testify/assert"
)

func slogToBuffer() (*bytes.Buffer, *slog.Logger) {
	buf := new(bytes.Buffer)
	return buf, slog.New(
		slog.NewTextHandler(
			buf,
			&slog.HandlerOptions{
				Level: slog.LevelDebug,
			},
		),
	)
}

func TestNew(t *testing.T) {
	c := New()
	assert.Equal(t, "config.Config", reflect.TypeOf(c).String())
}

func TestSetLogLevel(t *testing.T) {
	c := New()

	for _, i := range []int{0, 21, 41, 61} {
		c.LogLevel = i

		setLogLevel(&c)
		switch i {
		case 0:
			assert.Equal(t, slog.LevelError, c.SLogLevel.Level())
		case 21:
			assert.Equal(t, slog.LevelWarn, c.SLogLevel.Level())
		case 41:
			assert.Equal(t, slog.LevelInfo, c.SLogLevel.Level())
		case 61:
			assert.Equal(t, slog.LevelDebug, c.SLogLevel.Level())
		}
	}
}

func TestPrintRunningConfig(t *testing.T) {
	buf, log := slogToBuffer()
	c := New()
	c.Log = log
	cfgInfo, err := getStructInfo(&c)
	assert.NoError(t, err)
	printRunningConfig(&c, cfgInfo)

	assert.Contains(t, buf.String(), "Running Configuration")
}