/* 
* This program features an ArrayList to do its reverse copy thing 
* from one file to another. 
*/
package arraylistplay;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

public class ReverseCopy {

    public static void main(String[] args) throws FileNotFoundException, IOException {
        String inputFileName = "Titanium.text";
        String outputFileName = "TitaniumReversed.text";
        ArrayList<String> words = readWordsFromFile(inputFileName);
        writeWordsToFile(words, outputFileName);
    }
    private static ArrayList<String> readWordsFromFile(String inputFileName) throws FileNotFoundException {
        // Equate a scanner with the input file
        Scanner scanner = establishScanner(inputFileName);
        // Read the words from the file into a dynamically growing ArrayList
        ArrayList<String> words = new ArrayList<>();
        while (scanner.hasNext()) {
            String word = scanner.next();
            words.add(word);
            }
            // Return the words
            return words;
        }
        private static void writeWordsToFile(ArrayList<String> words, String outputFileName) throws IOException {
            // Equate a printer with an output file
            PrintWriter printer = getPrintWriter(outputFileName);
            // Print the words to the file
            for (int x = words.size() - 1; x >= 0; x = x - 1) {
                printer.println(words.get(x));
            }
            printer.close();
        }
        private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
            String fullFileName = createFullFileName(inputFileName);
            return new Scanner(new File(fullFileName));
        }
        private static PrintWriter getPrintWriter (String outputFileName) throws FileNotFoundException {
            String fullFileName = createFullFileName(outputFileName);
            PrintWriter printer = new PrintWriter(fullFileName);
            return printer;
        }

    private static String createFullFileName(String fileName) {
        String separator = System.getProperty("file.separator");
        String home = System.getProperty("user.home");
        String path = home + separator + "CS1Files" + separator + "data" + separator;
        String fullFileName = path + fileName;
        return fullFileName;
    }
}