package main

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

// MoveFile moves a file across file system boundaries
// taken from https://stackoverflow.com/questions/50740902/move-a-file-to-a-different-drive-with-go
func MoveFile(sourcePath, destPath string) error {
	inputFile, err := os.Open(sourcePath)
	if err != nil {
		return fmt.Errorf("Couldn't open source file: %w", err)
	}
	defer inputFile.Close()

	outputFile, err := os.Create(destPath)
	if err != nil {
		return fmt.Errorf("Couldn't open dest file: %w", err)
	}
	defer outputFile.Close()

	_, err = io.Copy(outputFile, inputFile)
	if err != nil {
		return fmt.Errorf("Couldn't copy to dest from source: %w", err)
	}

	// for Windows, close before trying to remove: https://stackoverflow.com/a/64943554/246801
	err = inputFile.Close()
	if err != nil {
		return fmt.Errorf("Couldn't close input: %w", err)
	}

	err = os.Remove(sourcePath)
	if err != nil {
		return fmt.Errorf("Couldn't remove source file: %w", err)
	}
	return nil
}