package ever.generic;

import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;

import ever.pipeline.AbstractLocalWorkflowAnalyzer;
import ever.pipeline.Case;
import ever.workflowRepresentation.EmptyProductException;
import ever.workflowRepresentation.NotAProductException;
import ever.workflowRepresentation.Product;
import ever.workflowRepresentation.Sequence;
import ever.workflowRepresentation.SimpleProduct;
import ever.workflowRepresentation.Task;
import ever.workflowRepresentation.Workflow;
import ever.workflowRepresentation.WorkflowElement;
/**
 *This Analyzer takes the raw string of an ingredient which was extracted by sundance and it splits ingredients lists in single ingredient.
 * Sundance can by default just extract one item per case frame. Therefore a set of pattern was integrated in Sundance to extract comma seperated lists (with and and or)
 * 
 * @author Pol Schumacher, Wirtschaftsinformatik, Institut fuer Informatik, Goethe Universitaet Frankfurt
 *
 */

public class LocalProductSplitter extends AbstractLocalWorkflowAnalyzer {

	@Override
	public Case analyze(Case c) {
		Workflow wf = c.getWf();
		LinkedList<WorkflowElement> taskList = new LinkedList<WorkflowElement>();
		Sequence seq = wf.getTopSequence();		
		for(WorkflowElement wfe : seq.getAllElements())
		{
			Task t;
			try {
				try {
					t = (Task)wfe;
				} catch (ClassCastException e1) {
					taskList.add(wfe);
					continue;
				}
				SimpleProduct p = (SimpleProduct)t.getNextInProduct();
				HashSet<Product> toAdd = new HashSet<Product>();
				while(p!=null) 
				{
					String rawProduct = p.getName();
					String [] split = rawProduct.split("(>comma)|(>COMMA)|( and )|( or )");
					for(String s :split)
					{
						try {
							toAdd.add(new SimpleProduct(s, t.getId()));
						} catch (EmptyProductException e) {
							continue;
						} catch (NotAProductException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
					t.removeInProduct(p);
					p=(SimpleProduct)t.getNextInProduct();					
				}
				for(Product pr : toAdd)
					t.addInProduct(pr);
				
				toAdd.clear();
				p = (SimpleProduct)t.getNextOutProduct();
				while(p!=null)
				{
					String rawProduct = p.getName();
					String [] split = rawProduct.split("(>COMMA)|( and )|( or )");
					for(String s :split)
					{
						try {
							toAdd.add(new SimpleProduct(s, t.getId()));
						} catch (EmptyProductException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						} catch (NotAProductException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
					t.removeOutProduct(p);
					p=(SimpleProduct)t.getNextOutProduct();					
				}
				for(Product pr : toAdd)
					t.addOutProduct(pr);
				
				
			} catch (ClassCastException e) {				
				continue;
			}
			taskList.add(t);			
		}		
		seq.putAllElements(taskList);
		wf.setTopSequence(seq);
		c.setWf(wf);
		return c;		
	}

	@Override
	public HashMap<Integer, Case> analyze(HashMap<Integer, Case> c) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public void analyze() {
		// TODO Auto-generated method stub

	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}