package main

import (
	"fmt"
	"io"
	"os"
)

func check(e error) {
	if e != nil {
		panic(e)
	}
}

func copyFile(src, dst string) error {
	// Open the source file
	sourceFile, err := os.Open(src)
	if err != nil {
		return fmt.Errorf("failed to open source file: %w", err)
	}
	defer sourceFile.Close()

	// Create the destination file
	destinationFile, err := os.Create(dst)
	if err != nil {
		return fmt.Errorf("failed to create destination file: %w", err)
	}
	defer destinationFile.Close()

	// Copy the content
	_, err = io.Copy(destinationFile, sourceFile)
	if err != nil {
		return fmt.Errorf("failed to copy file: %w", err)
	}

	// Flush file metadata to disk
	err = destinationFile.Sync()
	if err != nil {
		return fmt.Errorf("failed to sync destination file: %w", err)
	}

	return nil
}