package assignment1;

import java.util.HashMap;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class XMLParser {

	public  void build(String file) {
		DocumentBuilderFactory factory= DocumentBuilderFactory.newInstance();
	     HashMap<String,Movie> listOfMovies = new HashMap<String,Movie>();
	     HashMap<String,Genres> listOfGenre = new HashMap<String,Genres>();
	     HashMap<String,Actor> listOfActor = new HashMap<String,Actor>();
	     HashMap<String,Action> listOfAction = new HashMap<String,Action>();
	     HashMap<String,Users> listOfUser = new HashMap<String,Users>();
	     Overseer overseer=new Overseer();
		overseer.setup(listOfMovies, listOfGenre, listOfActor, listOfAction, listOfUser);



		try{

		DocumentBuilder builder=factory.newDocumentBuilder();
		Document doc=builder.parse(file);
		NodeList movie=doc.getElementsByTagName("movies");
		NodeList genreList=doc.getElementsByTagName("genres");
		for(int i=0;i<genreList.getLength();i++)
		{
			Node genreFinder = genreList.item(i);
			if (genreFinder.getNodeType() == Node.ELEMENT_NODE) {
				Element eElement = (Element) genreFinder;
				NodeList genreNode=eElement.getElementsByTagName("genre");
				for(int j=0;j<genreNode.getLength();j++)
				{
					Node genre = genreNode.item(j);

					Genres temp = new Genres();
					temp.setName(genre.getTextContent());
					listOfGenre.put(genre.getTextContent().toLowerCase(),temp);
			}
		}

		}
		NodeList actionList=doc.getElementsByTagName("actions");
		for(int i=0;i<genreList.getLength();i++)
		{
			Node actionFinder = actionList.item(i);
			if (actionFinder.getNodeType() == Node.ELEMENT_NODE) {
				Element eElement = (Element) actionFinder;
				NodeList actionNode=eElement.getElementsByTagName("action");
				for(int j=0;j<actionNode.getLength();j++)
				{
					Node action = actionNode.item(j);

					Action temp = new Action();
					temp.setName(action.getTextContent());
					listOfAction.put(action.getTextContent().toLowerCase(),temp);
			}
		}

		}
		for(int i=0;i<movie.getLength();i++)
		{
			Node movieFinder = movie.item(i);
			if (movieFinder.getNodeType() == Node.ELEMENT_NODE) {
				Element eElement = (Element) movieFinder;
				NodeList movieNode=eElement.getElementsByTagName("movie");
				for(int j=0;j<movieNode.getLength();j++)
				{
					Node movieDesc = movieNode.item(j);
					if (movieDesc.getNodeType() == Node.ELEMENT_NODE) {
						Movie tempMovie= new Movie();
						Element temp = (Element) movieDesc;

					    NodeList title=temp.getElementsByTagName("title");
					    String movieName= title.item(0).getTextContent();

					   tempMovie.setMovieName(title.item(0).getTextContent());
					   NodeList description=temp.getElementsByTagName("description");
					   tempMovie.addDescription(description.item(0).getTextContent());
					   NodeList year=temp.getElementsByTagName("year");
					   tempMovie.addYear(year.item(0).getTextContent());
					   NodeList genre=temp.getElementsByTagName("genre");
					   tempMovie.addGenre(genre.item(0).getTextContent());
					   NodeList director=temp.getElementsByTagName("director");
					   tempMovie.setDirectorName(director.item(0).getTextContent());
					   NodeList rating=temp.getElementsByTagName("rating");
					   tempMovie.addRating(rating.item(0).getTextContent());
					   NodeList writingList=temp.getElementsByTagName("writer");
					   for(int p=0;p<writingList.getLength();p++)
					   {
						   tempMovie.addWriter(writingList.item(p).getTextContent());

					   }
					   NodeList actorList=temp.getElementsByTagName("actor");
					   for(int n=0;n<actorList.getLength();n++)
					   {
						   Actor actor= new Actor();
						   actor.setName(actorList.item(n).getTextContent());

						   tempMovie.addActor( actorList.item(n).getTextContent());
						   listOfActor.put(actorList.item(n).getTextContent().toLowerCase(),actor);

					   }
					   listOfMovies.put(movieName.toLowerCase(),tempMovie);
					   tempMovie.setUpActors();

				}

			}

		}
		}
		NodeList userList=doc.getElementsByTagName("users");
		for(int i=0;i<userList.getLength();i++)
		{
			Node userFinder = userList.item(i);
			if (userFinder.getNodeType() == Node.ELEMENT_NODE) {
				Element eElement = (Element) userFinder;
				NodeList userNode=eElement.getElementsByTagName("user");
				for(int j=0;j<userNode.getLength();j++)
				{
					Node user = userNode.item(j);
					if (user.getNodeType() == Node.ELEMENT_NODE) {

						Element temp = (Element) user;
					    NodeList userName=temp.getElementsByTagName("username");
					    NodeList password=temp.getElementsByTagName("password");
					    NodeList fName=temp.getElementsByTagName("fname");
					    NodeList lName=temp.getElementsByTagName("lname");
					    Users tempUser= new Users(userName.item(0).getTextContent(),password.item(0).getTextContent(),
					    		fName.item(0).getTextContent(),lName.item(0).getTextContent());
					    NodeList followingList=temp.getElementsByTagName("following");
						   for(int p=0;p<followingList.getLength();p++)
						   {
								Node followerFinder = followingList.item(i);
								if (followerFinder.getNodeType() == Node.ELEMENT_NODE) {
									Element fElement = (Element) followerFinder;
								    NodeList followerUserName=fElement.getElementsByTagName("username");
								    for(int r=0;r<followerUserName.getLength();r++)
								    {
								    	tempUser.setFollowing(followerUserName.item(r).getTextContent());
								    }
								}


						   }
						NodeList feedList=temp.getElementsByTagName("feed");
						   for(int k=0;k<feedList.getLength();k++)
						   {
								NodeList eventList=temp.getElementsByTagName("event");
								for(int t=0;t<eventList.getLength();t++)
								{
									NodeList action=temp.getElementsByTagName("action");
								    NodeList movieName=temp.getElementsByTagName("movie");
								    NodeList ratingNum=temp.getElementsByTagName("rating");
								    tempUser.setEventList(action.item(0).getTextContent(),
								    		movieName.item(0).getTextContent(), ratingNum.item(0).getTextContent());
								}

						   }
						   listOfUser.put(tempUser.getUserName().toLowerCase(),tempUser);



				}

			}

		}

		}
		overseer.buildUp();


	 } catch (Exception e) {
		    e.printStackTrace();
		    }

	}
}