//NAME:Caleb Bird
//ID: 1289680
//??References??

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;

public class TabProcTextGen {
    public static void main(String[] args) {
		try{
				
				
			if (args.length != 3) {
				System.out.println("Usage: TabProcTextGen <inputFilename> <outputFilename> <inputType>");
			}
			else {
				String inputFilename = args[0];
				String outputFilename = args[1];
				String inputType = args[2];
				    

				System.out.println("Processing: " + inputFilename);
				
				FileReader fileReader = new FileReader(inputFilename);
				BufferedReader buf = new BufferedReader(fileReader);
				//FileWriter fw = new FileWriter("HathiDocIDList.txt");
				FileWriter fw = new FileWriter(outputFilename);
				String line = null;
				String[] item;

				//Splits into each record, since readLine splits by "\n"
				int line_num = 0;

				while ((line = buf.readLine()) != null) {
					line_num++;
					if (line_num%100000 == 0) {
					System.out.print(".");
					System.out.flush();
					}

					//Splits by tab, leaves "" for every blank entry
					item = line.split("\t", -1);
					//Check items to be equal
					if(	item[1].equals("allow") && 
					item[2].equals("pd") && 
					item[19].equals(inputType) && 
					(item[24].equals("open")||item[24].equals("page"))){
						//Encode id
						String idEncoded = item[0];
						//idEncoded = idEncoded.replaceAll(":", "+").replaceAll("/", "=");
						//Write item to file
						fw.write(idEncoded + "\n");
					}
				}		
				buf.close();
				fw.close();
			}
		}catch(Exception e){
			e.printStackTrace();
		}
    }
}

//REFERNECES 
//https://www.javatpoint.com/java-filewriter-class
//https://docs.oracle.com/javase/8/docs/api/index.html?java/io/FileWriter.html
//Email from supervisor (Compx520 ID Error Apr 24)