package logger

import (
	"bytes"
	"encoding/json"
	"log/slog"
	"strings"
	"testing"
)

func TestLogFmt(t *testing.T) {

	var buf bytes.Buffer
	jsonh := slog.NewJSONHandler(&buf, nil)
	h := newLogFmtHandler(jsonh)

	log := slog.New(h)
	log.Info("test message", "id", 1010)
	t.Logf("buf: %s", buf.String())

	msg := map[string]any{}

	err := json.Unmarshal(buf.Bytes(), &msg)
	if err != nil {
		t.Logf("couldn't unmarshal json log: %s", err)
		t.Fail()
	}

	if msgTxt, ok := msg["msg"].(string); ok {
		if !strings.Contains(msgTxt, "id=1010") {
			t.Log("didn't find id in msg value")
			t.Fail()
		}
		if strings.Contains(msgTxt, "level=") {
			t.Log("msg value contains level=")
			t.Fail()
		}
	} else {
		t.Log("didn't find message in output")
		t.Fail()
	}

}