import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import java.lang.Number;
import java.text.ParseException;
import java.text.SimpleDateFormat;

/**
 *
 * CSCU9T4 Java strings and files exercise.
 *
 */
public class FilesInOut {

    public static void main(String[] args) throws IOException {
        // Replace this with statements to set the file name (input) and file name (output).
        // Initially it will be easier to hardcode suitable file names.

        // Set up a new Scanner to read the input file.
        // Processing line by line would be sensible here.
        // Initially, echo the text to System.out to check you are reading correctly.
        // Then add code to modify the text to the output format.

        // Set up a new PrintWriter to write the output file.
        // Add suitable code into the above processing (because you need to do this line by line also.
        // That is, read a line, write a line, loop.

        // Finally, add code to read the filenames as arguments from the command line.

//         String inFileName = "input.txt";
//         String outFileName = "output.txt";

         String cmdInFileName = args[0];
         String cmdOutFileName = args[1];

         boolean uppercase = false;

         for (int i = 0; i < args.length; i++) {
             if (args[i].equals("-u")) {
                 uppercase = true;
             }
         }
         readWriteFile(cmdInFileName, cmdOutFileName, uppercase);

    } // main

    public static void readWriteFile(String inFileName, String outFileName, boolean uppercase) {

        try {
            File input = new File("C:\\Users\\marks\\eclipse-workspace\\T4Prac4\\" + inFileName); // Set input file
            File output = new File("C:\\Users\\marks\\eclipse-workspace\\T4Prac4\\"+ outFileName); // Set output file

            Scanner scan = new Scanner(input); // Declare Scanner
            PrintWriter printer = new PrintWriter(output); // Declare printWriter
            while(scan.hasNextLine()) { // Loop while text exists in file
                String s = scan.nextLine(); // Scan next line
                String[] splitStrings = s.split(" ", 4);
                String finalOutput = "";

                if (splitStrings.length < 4) {
                    if (uppercase) {
                        finalOutput = formattedOutputUpperCase3(splitStrings[0], splitStrings[1], splitStrings[2]);
                    }
                    else finalOutput = formattedOutput3(splitStrings[0], splitStrings[1], splitStrings[2]);
                }
                else {
                    if (uppercase) {
                        finalOutput = formattedOutputUpperCase(splitStrings[0], splitStrings[1], splitStrings[2], splitStrings[3]);
                    }
                    else finalOutput = formattedOutput(splitStrings[0], splitStrings[1], splitStrings[2], splitStrings[3]);
                }
                System.out.println(finalOutput); // Print out to console
                printer.write(finalOutput + "\n"); // Format


            }
            scan.close();
            printer.close();
        }
        catch (FileNotFoundException e) {
            System.err.println("File not found");
        }

    } // readFile

    public static String capitalise(String str) {
        if(str == null || str.isEmpty()) { // Check there is a string
            return str;
        }

        return str.substring(0, 1).toUpperCase() + str.substring(1); // Convert first letter of string to Uppercase
    }

    public static String formatDate(String date) {
        SimpleDateFormat inputDate = new SimpleDateFormat("ddmmyyyy"); // Inputed format
        SimpleDateFormat newFormat = new SimpleDateFormat("dd/mm/yyyy");// New format
        String reformattedStr = "";

        try {
            reformattedStr = newFormat.format(inputDate.parse(date)); // Format the String
        }
        catch (ParseException e) {
            e.printStackTrace();
        }

        return reformattedStr; // return

    }

    public static String formattedOutput(String firstWord,  String middleName, String secondWord, String date) {
        String finalOutput = capitalise(firstWord) + " " + capitalise(middleName) + ". " + capitalise(secondWord) + "\t\t " + formatDate(date);

        return finalOutput;
    }

    public static String formattedOutputUpperCase(String firstWord, String middleName, String secondWord, String date) {
        String finalOutput = firstWord.toUpperCase() + " " + middleName.toUpperCase() + ". " + secondWord.toUpperCase() + "\t\t " + formatDate(date);

        return finalOutput;
    }

    public static String formattedOutput3(String firstWord, String secondWord, String date) {
        String finalOutput = capitalise(firstWord) + " " + capitalise(secondWord) + "\t\t " + formatDate(date);

        return finalOutput;
    }

    public static String formattedOutputUpperCase3(String firstWord, String secondWord, String date) {
        String finalOutput = firstWord.toUpperCase() + " " + secondWord.toUpperCase() + "\t\t " + formatDate(date);

        return finalOutput;
    }
} // FilesInOut