// Count on many "I" appear in the posts on my student blog
// based on Daniel Shiffman code - A2Z


import java.io.*;
import java.nio.*;
import java.nio.channels.*;


public class Exercise2 {
  public static void main (String[] args) throws IOException {
	  
	

    // Create an input stream and file channel
    // Using first argument as file name to read in
    FileInputStream fis = new FileInputStream(args[0]);
    FileChannel fc = fis.getChannel();
  
    // Read the contents of a file into a ByteBuffer
    ByteBuffer bb = ByteBuffer.allocate((int)fc.size());
    fc.read(bb);
    fc.close();
    
    // Convert ByteBuffer to one long String
    String content = new String(bb.array());
    
    // This line uses a regular expression which we haven't learned yet
    // '\\b' means split the text along word boundaries
    // We will cover this in more detail next week
    String[] words = content.split("\\b");
    StringBuffer CountIs = new StringBuffer();
    StringBuffer PhrasesIs = new StringBuffer();
    for ( int a = 0; a<words.length; a ++){
    	//System.out.println(words[a]);
    	String lookforI = "I";
    	if (words[a].equals(lookforI)){
    		CountIs.append(words[a]+ "\n");
    		PhrasesIs.append(words[a] + " " + words [a+2] + "\n");    	}
    }
    
    String Count = CountIs.toString();
   
    String [] CountFinal = Count.split("\n");
    int count = CountFinal.length;
    String FinalPhrases = PhrasesIs.toString();
    
    String output = "I wrote " + count + " times the word I in my blog " + "\n" + "Take a look of the some of the phrases where I use the word I" + "\n"+  "\n"+ FinalPhrases;
    
  
    // Create an output stream and file channel to write out a report
    // (Also print out report to screen)
    FileOutputStream fos = new FileOutputStream(args[1]);
    FileChannel outfc = fos.getChannel();
    
    // Convert content String into ByteBuffer and write out to file
    bb = ByteBuffer.wrap(output.getBytes());
    outfc.write(bb);
    outfc.close();
    
    System.out.println("Reversed text written to " + args[1]);

  }
}