package logger

import (
	"os"
	"strings"
	"testing"
)

const (
	tcPathInfo    = "logger_info_test.txt"
	tcPathWarning = "logger_warning_test.txt"
	tcPathError   = "logger_error_test.txt"
)

const (
	tcTestInfo    = "test_info_text"
	tcTestWarning = "test_warning_text"
	tcTestError   = "test_error_text"
)

func TestLoggerSettings(t *testing.T) {
	t.Parallel()

	_ = NewLogger(
		NewSettings(&SSettings{}),
		func(arg ILogArg) string {
			return arg.(string)
		},
	)
}

func TestNullLogger(t *testing.T) {
	t.Parallel()

	logger := NewLogger(
		NewSettings(&SSettings{}),
		func(arg ILogArg) string {
			return arg.(string)
		},
	)
	logger.PushErro("1") // do nothing
	logger.PushWarn("1") // do nothing
	logger.PushInfo("1") // do nothing

	logger2 := NewLogger(
		NewSettings(&SSettings{
			FInfo: os.Stdout,
			FWarn: os.Stdout,
			FErro: os.Stdout,
		}),
		func(_ ILogArg) string {
			return ""
		},
	)
	logger2.PushErro("1") // do nothing
	logger2.PushWarn("1") // do nothing
	logger2.PushInfo("1") // do nothing
}

func TestLogger(t *testing.T) {
	t.Parallel()

	defer func() {
		_ = os.Remove(tcPathInfo)
		_ = os.Remove(tcPathWarning)
		_ = os.Remove(tcPathError)
	}()

	fileInfo, err := os.OpenFile(tcPathInfo, os.O_CREATE|os.O_WRONLY, 0600)
	if err != nil {
		t.Fatal(err.Error())
	}

	fileWarn, err := os.OpenFile(tcPathWarning, os.O_CREATE|os.O_WRONLY, 0600)
	if err != nil {
		t.Fatal(err.Error())
	}

	fileErro, err := os.OpenFile(tcPathError, os.O_CREATE|os.O_WRONLY, 0600)
	if err != nil {
		t.Fatal(err.Error())
	}

	logger := NewLogger(
		NewSettings(&SSettings{
			FInfo: fileInfo,
			FWarn: fileWarn,
			FErro: fileErro,
		}),
		func(arg ILogArg) string {
			return arg.(string)
		},
	)

	logger.PushInfo(tcTestInfo)
	logger.PushWarn(tcTestWarning)
	logger.PushErro(tcTestError)

	res, err := os.ReadFile(tcPathInfo)
	if err != nil {
		t.Fatal(err.Error())
	}
	if !strings.Contains(string(res), tcTestInfo) {
		t.Fatal("info does not contains tcTestInfo")
	}

	res, err = os.ReadFile(tcPathWarning)
	if err != nil {
		t.Fatal(err.Error())
	}
	if !strings.Contains(string(res), tcTestWarning) {
		t.Fatal("warning does not contains tcTestWarning")
	}

	res, err = os.ReadFile(tcPathError)
	if err != nil {
		t.Fatal(err.Error())
	}
	if !strings.Contains(string(res), tcTestError) {
		t.Fatal("error does not contains tcTestError")
	}
}