package internal

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

// Logger constants
var (
	Log       *log.Logger
	DaemonLog *log.Logger
)

func init() {
	// Check debug mode once at startup
	debugMode := os.Getenv("DEBUG") == "1"

	// Initialize loggers
	Log = createLogger("envvault.log", debugMode)
	DaemonLog = createLogger("envvault.daemon.log", debugMode)
}

// createLogger creates a logger with the specified log file
func createLogger(logFileName string, debugMode bool) *log.Logger {
	// Ensure log directory exists
	homeDir, err := os.UserHomeDir()
	if err != nil {
		log.Printf("Failed to get user home directory: %v", err)
		return log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile)
	}

	logDir := filepath.Join(homeDir, ".local/cache/envvault")
	if err := os.MkdirAll(logDir, 0700); err != nil {
		log.Printf("Failed to create log directory: %v", err)
		return log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile)
	}

	// Open log file
	logFilePath := filepath.Join(logDir, logFileName)
	f, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
	if err != nil {
		log.Printf("Failed to open log file: %v", err)
		return log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile)
	}

	// If in debug mode, log to both file and stderr
	var writer io.Writer
	if debugMode {
		writer = io.MultiWriter(f, os.Stderr)
	} else {
		writer = f
	}

	// Create logger with timestamp, file name, and line number
	return log.New(writer, "", log.LstdFlags|log.Lshortfile)
}