package com.teamtreehouse;

import java.io.IOException;

public class Main {

    public static void main(String[] args) {
        Prompter prompter = new Prompter();
// create a new Prompter object
        String story = "";
// create a story String and initialize it to " "
// there is no story yet, but the Users story-template will be stored inside "story"

        try {
            story = prompter.promptForStory();
// inside the try block use the promptForStory() method from the Prompter class
// to ask the User for a Story Template and "__wordsThatWillBeReplaced__ "
// this method uses the BufferedReader called mReader that is created inside the Prompter class
// using readLine method you will get a Story as a String object and store it inside "story"

        } catch (IOException ioe) {
// catch exception if something is wrong
            ioe.printStackTrace();
        }
        Template tmpl = new Template(story);
// give the story for analysis to the Template class
// inside the Template class the "__wordsThatWillBeReplaced__" inside the story will be analized, extracted
// and stored inside the List called mPlaceHolders (see Template class)
        prompter.run(tmpl);
// look at the run method inside the Prompter class
// the run method accepts the template that is created inside the Template class
// the promtForWords method uses a for loop and gets the placeHolders (____wordsThatWillBeReplaced____) 
// from the Template class and stores it inside the String "phrase"
// this "phrase" is handled to the promptForWord method that presents the placeHolders to the User 
// and asks him to input the proper words and replace the placeHolder ( __ ? __ )
// if the Users input is not censored a trimed answer will be returned
    }
}

package com.teamtreehouse;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


public class Prompter {
    private BufferedReader mReader;
    private Set<String> mCensoredWords;

    public Prompter() {
        mReader = new BufferedReader(new InputStreamReader(System.in));
        loadCensoredWords();
    }

    private void loadCensoredWords() {
        mCensoredWords = new HashSet<String>();
        Path file = Paths.get("resources", "censored_words.txt");
        List<String> words = null;
        try {
            words = Files.readAllLines(file);
        } catch (IOException e) {
            System.out.println("Couldn't load censored words");
            e.printStackTrace();
        }
        mCensoredWords.addAll(words);
    }

    public void run(Template tmpl) {
        List<String> results = null;
        try {
            results = promptForWords(tmpl);
        } catch (IOException e) {
            System.out.println("There was a problem prompting for words");
            e.printStackTrace();
            System.exit(0);
        }

        System.out.println(tmpl.render(results));

    }


    public List<String> promptForWords(Template tmpl) throws IOException {
        List<String> words = new ArrayList<String>();
        for (String phrase : tmpl.getPlaceHolders()) {
            String word = promptForWord(phrase);
            words.add(word);
        }
        return words;
    }



    public String promptForWord(String phrase) throws IOException {
        System.out.printf("Please Enter your words for %s:: %n", phrase);
        String answer = mReader.readLine();

        while (mCensoredWords.contains(answer)) {
            System.out.printf("Sorry %s is an unacceptable word%n", phrase);
            answer = mReader.readLine();

        }
        return answer.trim();
    }


    public String promptForStory() throws IOException {
        return mReader.readLine();
    }
}

package com.teamtreehouse;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Template {
    private String mCompiled;
    private List<String> mPlaceholders;

    public Template(String text) {
        Pattern pattern = Pattern.compile("__([^__]+)__");
        Matcher matcher = pattern.matcher(text);
        this.mPlaceholders = new ArrayList();

        while(matcher.find()) {
            String label = matcher.group(1);
            this.mPlaceholders.add(label);
        }

        this.mCompiled = matcher.replaceAll("%s");
    }

    public List<String> getPlaceHolders() {
        return this.mPlaceholders;
    }

    public String render(List<String> values) {
        return String.format(this.mCompiled, values.toArray());
    }
}