//  HomeworkGenerator
//  A2Z @ ITP
//  Created by alex kauffmann on 3/5/08.
//

import java.util.*;
import java.io.PrintWriter;
import java.io.IOException;

public class HomeworkGenerator {

    private String formatter;
    private String replacer;
    private String condenser;
    private String orderer;
    private int triggered = 0;

    private String filterString = "";

    public static void main (String args[]) {
	HomeworkGenerator hg = new HomeworkGenerator();
	hg.generate();
    }

    public HomeworkGenerator() {
    }

    public void formatter() {
	double chance = Math.random();
	if (chance > 0.5) return;
	else {
		int randomIndex = (int)(Math.random() * 3);	
		switch (randomIndex) {
			case 0: // Makes everything lower case
				formatter = "line = line.toLowerCase();\n";
			        filterString += formatter;
				break;
			case 1: // Makes everything upper case
				formatter = "line = line.toUpperCase();\n";
			        filterString += formatter;
				break;
			case 2: // Upper cases words greater than a random length determined at compile time 
				formatter = "String[] word = line.split(\"\\\\W+\");\nline=\"\";\nfor (String w: word) {\nif (w.length() > ((int)(Math.random()*8))) w = w.toUpperCase();\nline+=w+\" \";\n}\n";
			        filterString += formatter;
				break;

		}
	}
    }

    public void replacer() {
	double chance = Math.random();
	if (chance > 0.5) return;
	else {
		int randomIndex = (int)(Math.random() * 3);	
		switch (randomIndex) {
			case 0: // Unhelpful mechanic translator
				replacer = "line = line.replaceAll(\"\\\\bis\\\\b\", \"ain't\");\nline = line.replaceAll(\"\\\\bIs\\\\b\", \"Ain't\");\nline = line.replaceAll(\"\\\\bare\\\\b\", \"aren't\");\nline = line.replaceAll(\"\\\\bAre\\\\b\", \"Aren't\");\nline = line.replaceAll(\"\\\\bcan\\\\b\", \"can't\");\nline = line.replaceAll(\"\\\\bCan\\\\b\", \"Can't\");\nline = line.replaceAll(\"\\\\bdo\\\\b\", \"don't\");\nline = line.replaceAll(\"\\\\bDo\\\\b\", \"Don't\");\nline = line.replaceAll(\"\\\\bcould\\\\b\", \"couldn't\");\nline = line.replaceAll(\"\\\\bCould\\\\b\", \"Couldn't\");\nline = line.replaceAll(\"\\\\bwould\\\\b\", \"wouldn't\");\nline = line.replaceAll(\"\\\\bWould\\\\b\", \"Wouldn't\");\nline = line.replaceAll(\"\\\\bshould\\\\b\", \"shouldn't\");\nline = line.replaceAll(\"\\\\bShould\\\\b\", \"Shouldn't\");\nline = line.replaceAll(\"\\\\bwill\\\\b\", \"won't\");\nline = line.replaceAll(\"\\\\bWill\\\\b\", \"Won't\");\nline = line.replaceAll(\"\\\\bshall\\\\b\", \"shan't\");\nline = line.replaceAll(\"\\\\bShall\\\\b\", \"Shan't\");\nline = line.replaceAll(\"\\\\byes\\\\b\", \"no\");\nline = line.replaceAll(\"\\\\bYes\\\\b\", \"No\");\nline = line.replaceAll(\"\\\\bmust\\\\b\", \"mustn't\");\nline = line.replaceAll(\"\\\\bMust\\\\b\", \"Mustn't\");\nline = line.replaceAll(\"\\\\bneed\\\\b\", \"needn't\");\nline = line.replaceAll(\"\\\\bNeed\\\\b\", \"Needn't\");\nline = line.replaceAll(\"\\\\bhave\\\\b\", \"haven't\");\nline = line.replaceAll(\"\\\\bHave\\\\b\", \"Haven't\");\nline = line.replaceAll(\"\\\\bhas\\\\b\", \"hasn't\");\nline = line.replaceAll(\"\\\\bHas\\\\b\", \"Hasn't\");\nline = line.replaceAll(\"\\\\bwas\\\\b\", \"wasn't\");\nline = line.replaceAll(\"\\\\bWas\\\\b\", \"Wasn't\");\nline = line.replaceAll(\"\\\\bdoes\\\\b\", \"don't\");\nline = line.replaceAll(\"\\\\bDoes\\\\b\", \"Don't\");\nline = line.replaceAll(\"\\\\bany\\\\b\", \"no\");\nline = line.replaceAll(\"\\\\bAny\\\\b\", \"No\");\n";
			        filterString += replacer;
				break;
			case 1: // Leet translator
				replacer = "line = line.replaceAll(\"[oO]\", \"0\");\nline = line.replaceAll(\"[iI]\", \"1\");\nline = line.replaceAll(\"[zZ]\", \"2\");\nline = line.replaceAll(\"[eE]\", \"3\");\nline = line.replaceAll(\"[aA]\", \"4\");\nline = line.replaceAll(\"[sS]\", \"5\");\nline = line.replaceAll(\"[bB]\", \"6\");\nline = line.replaceAll(\"[tT]\", \"7\");\nline = line.replaceAll(\"[bB]\", \"8\");\nline = line.replaceAll(\"[gG]\", \"9\");\nline = line.replaceAll(\"s\\\\b\", \"z\");\n";
			        filterString += replacer;
				break;
			case 2: // Teenage girl translator
				replacer = "line = line.replaceAll(\"[,;:]\", \"!\");\nline = line.replaceAll(\"\\\\.\", \"?\");\nline+=\" and like\";\n";
			        filterString += replacer;
				break;

		}
	}
    }

    public void condenser() {
	double chance = Math.random();
	if (chance > 0.5) return;
	else {
		int randomIndex = (int)(Math.random() * 3);	
		switch (randomIndex) {
			case 0: // Removes all words that contain the letter "e"
				condenser = "String[] words = line.split(\"\\\\W+\");\nline=\"\";\nfor (String w: words) {\nif (w.indexOf(\"e\") == -1) line+=w+\" \";\n}\n";
			        filterString += condenser;
				break;
			case 1: // Removes all four-letter words
				condenser = "String[] words = line.split(\"\\\\W+\");\nline=\"\";\nfor (String w: words) {\nif (w.length() != 4) line+=w+\" \";\n}\n";
			        filterString += condenser;
				break;
			case 2: // Reduces each line to its longest word
				condenser = "int max = 0;\nString longWord = \"\";\nString[] words = line.split(\"\\\\W+\");\nfor (String w: words) {\nif (w.length() > max) {\nmax = w.length();\nlongWord = w;\n}\n}\nline=longWord;\n";
			        filterString += condenser;
				break;

		}
	}
    }

    public void orderer() {
	double chance = Math.random();
	if (chance > 0.5) return;
	else {
		triggered = 1;  // Returns lines in random order
		orderer = "while (metaFilter.size()>0) {\nint randomIndex = (int)(Math.random() * metaFilter.size());\nprintln(metaFilter.get(randomIndex));\nmetaFilter.remove(randomIndex);\n}\n";
	}
    }

    public void generate() {

	ArrayList<Integer> filterOrder = new ArrayList<Integer>();
	
	for (int i = 0; i < 4; i++) {
		filterOrder.add(i+1);
	}

	while (filterOrder.size() > 0) {
		int randomIndex = (int)(Math.random() * filterOrder.size());
		int caseCounter = filterOrder.get(randomIndex);

		switch (caseCounter) {
			case 1:
			    formatter();
			    filterOrder.remove(randomIndex);
			    break;
			case 2:
			    replacer();
			    filterOrder.remove(randomIndex);
			    break;
			case 3:
			    condenser();
			    filterOrder.remove(randomIndex);
			    break;
			case 4:
			    orderer();
			    filterOrder.remove(randomIndex);
			    break;
		}
	}
	outPut();
    }


    public void outPut() {
	try {
		PrintWriter output = new PrintWriter("myHomework.java");
		output.print("import com.decontextualize.a2z.TextFilter;\nimport java.util.ArrayList;\n\npublic class myHomework extends TextFilter {\nprivate ArrayList<String> metaFilter= new ArrayList<String>();\npublic static void main (String args[]) {\nnew myHomework().run();\n}\n\npublic void eachLine(String line) {\n");
		if (filterString.equals("") && triggered==0) {
			generate();
		} 
		if (triggered == 0) {
		output.print(filterString+"metaFilter.add(line);\n}\n\npublic void end() {\nfor (int i = 0; i<metaFilter.size(); i++) {\nprintln(metaFilter.get(i));\n}\n}\n}\n");
		} else {
		output.print(filterString+"metaFilter.add(line);\n}\n\npublic void end() {\n"+orderer+"\n}\n}\n");
		}
		output.close();
	        }
		catch (IOException e) {
    		}
		description();
    	    }


    public void description() {
	String generatedString = "";
	String[] filterOne = {"munge","distort","falsify","repurpose","whisper","reformat","render invisible","translate","recontextualize","refute","destroy","soufflé"};
	String[] filterTwo = {"capitalizing","decapitalizing","erasing","reversing","doubling","truncating","ironically understating","cataloguing","parsing","populating","copying","removing"};
	String[] filterThree = {"every four-letter word","every other word","each pronoun","each rhyme","a mediocre poem","each line","one line","an arbitrary noun phrase","each line that contains the word 'the'"};
	String[] filterFour = {"removing every fourth character from", "searching the internet for","comparing it to","sorting it based on","indexing it based on","setting it to the tune of"};
	String[] filterFive = {"Adam Parrish's website","Adam Parrish's lecture notes","all my correspondence with Adam Parrish","Adam Parrish's phone number","Adam Parrish's thoughts on grammar","the contents of Adam Parrish's desk drawer in the Residents' office","a random file on Adam Parrish's laptop"};
	String[] filterSix = {"a scathing critique of","a post-modern limerick about","an entirely incomprehensible rendition of","a meditation on","what easily amounts to the world's most eleoquent commentary on","a reasonable substitute for","a new interpretation of","an Oulipo poem about"};
	String[] filterSeven = {"death","the idea of homework","country song lyrics","words better left unsaid", "text","algorithms","language","grammar","dialogue","words", "writing","letters","the alphabet"};

	int randomIndex = (int)(Math.random() * filterOne.length);
	generatedString += filterOne[randomIndex]+" the text you give it by ";
	randomIndex = (int)(Math.random() * filterTwo.length);
	generatedString += filterTwo[randomIndex]+" ";
	randomIndex = (int)(Math.random() * filterThree.length);
	generatedString += filterThree[randomIndex]+" before ";
	randomIndex = (int)(Math.random() * filterFour.length);
	generatedString += filterFour[randomIndex]+" ";
	randomIndex = (int)(Math.random() * filterFive.length);
	generatedString += filterFive[randomIndex]+".  The resulting text is ";
	randomIndex = (int)(Math.random() * filterSix.length);
	generatedString += filterSix[randomIndex]+" ";
	randomIndex = (int)(Math.random() * filterSeven.length);
	generatedString += filterSeven[randomIndex]+".";

	System.out.println("\n\nThe text filter I created for this week's class will "+generatedString+"\n\nTo run it, type 'javac myHomework.java' followed by\n'java myHomework <nameoftextfile.txt' at the prompt.\nPlease munge responsibly.\n\n");

    }
}