package logger

import (
	"fmt"
	"log"
	"os"
	"path/filepath"
)

var (
	infoLog  *log.Logger
	errorLog *log.Logger
	debugLog *log.Logger
)

func Init() error {
	home, err := os.UserHomeDir()
	if err != nil {
		home = "."
	}

	logDir := filepath.Join(home, ".config", "grokkit")
	if err := os.MkdirAll(logDir, 0755); err != nil {
		return fmt.Errorf("failed to create log directory: %w", err)
	}

	logFile := filepath.Join(logDir, "grokkit.log")
	file, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
	if err != nil {
		return fmt.Errorf("failed to open log file: %w", err)
	}

	infoLog = log.New(file, "INFO: ", log.Ldate|log.Ltime|log.Lshortfile)
	errorLog = log.New(file, "ERROR: ", log.Ldate|log.Ltime|log.Lshortfile)
	debugLog = log.New(file, "DEBUG: ", log.Ldate|log.Ltime|log.Lshortfile)

	return nil
}

func Info(format string, v ...interface{}) {
	if infoLog != nil {
		infoLog.Output(2, fmt.Sprintf(format, v...))
	}
}

func Error(format string, v ...interface{}) {
	if errorLog != nil {
		errorLog.Output(2, fmt.Sprintf(format, v...))
	}
}

func Debug(format string, v ...interface{}) {
	if debugLog != nil {
		debugLog.Output(2, fmt.Sprintf(format, v...))
	}
}