package rebelsky.madlibs;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;

/**
 * A simple implementation of the Mad Libs game.  This game
 * prompts the user for a variety of parts of speech and then
 * puts them in a short story.
 *
 * @author Samuel A. Rebelsky
 * @version 1.0 of September 2005
 */
public class MadLibs
{
  public static void main(String[] args)
    throws Exception
  {
    // Look!  The program uses a ton of variables.
    String line;		// One line of the program
    String partOfSpeech;	// The part of speech for the user to enter
    String response;		// A response from the user.
    String story;		// The story we've created.
    PrintWriter screen;		// For printing to the screen.
    PrintWriter result;		// For printing from to the result file. 
    BufferedReader template;    // For reading from the template file.
    BufferedReader eyes;	// For user input.

    // Prepare the main input and output.
    screen = new PrintWriter(System.out, true);
    eyes = new BufferedReader(new InputStreamReader(System.in));

    // The story is initially empty.
    story = "";

    // Determine the file names and create appropriate readers and
    // writers.
    screen.print("Please enter the name of the template: ");
    screen.flush();
    response = eyes.readLine();
    template = new BufferedReader(new FileReader(new File(response)));
    screen.print("Please enter the name for the result file: ");
    screen.flush();
    response = eyes.readLine();
    result = new PrintWriter(new File(response));
    screen.println();

    // Four times (boy, I need a loop), read a line, find the thing
    // to ask, ask it, and add to the story.
    // ONE
    line = template.readLine();
    partOfSpeech = line.substring(line.indexOf("_")+1);
    partOfSpeech = partOfSpeech.substring(0, partOfSpeech.indexOf("_"));
    screen.print("Please enter a(n) ");
    screen.print(partOfSpeech);
    screen.print(": ");
    screen.flush();
    response = eyes.readLine();
    partOfSpeech = 
    line = line.replace("_".concat(partOfSpeech).concat("_"), response);
    story = story.concat("  ").concat(line).concat("\n");
    result.println(line);

    // TWO
    line = template.readLine();
    partOfSpeech = line.substring(line.indexOf("_")+1);
    partOfSpeech = partOfSpeech.substring(0, partOfSpeech.indexOf("_"));
    screen.print("Please enter a(n) ");
    screen.print(partOfSpeech);
    screen.print(": ");
    screen.flush();
    response = eyes.readLine();
    partOfSpeech = 
    line = line.replace("_".concat(partOfSpeech).concat("_"), response);
    story = story.concat("  ").concat(line).concat("\n");
    result.println(line);

    // THREE
    line = template.readLine();
    partOfSpeech = line.substring(line.indexOf("_")+1);
    partOfSpeech = partOfSpeech.substring(0, partOfSpeech.indexOf("_"));
    screen.print("Please enter a(n) ");
    screen.print(partOfSpeech);
    screen.print(": ");
    screen.flush();
    response = eyes.readLine();
    partOfSpeech = 
    line = line.replace("_".concat(partOfSpeech).concat("_"), response);
    story = story.concat("  ").concat(line).concat("\n");
    result.println(line);

    // FOUR
    line = template.readLine();
    partOfSpeech = line.substring(line.indexOf("_")+1);
    partOfSpeech = partOfSpeech.substring(0, partOfSpeech.indexOf("_"));
    screen.print("Please enter a(n) ");
    screen.print(partOfSpeech);
    screen.print(": ");
    screen.flush();
    response = eyes.readLine();
    partOfSpeech = 
    line = line.replace("_".concat(partOfSpeech).concat("_"), response);
    story = story.concat("  ").concat(line).concat("\n");
    result.println(line);

    // Print the story.
    screen.println();
    screen.println("Here is your story ...");
    screen.println();
    screen.println(story);

    // Clean up.
    screen.close();
    eyes.close();
    template.close();
    result.close();
  } // main(String[])

} // class MadLibs