package com.onaro.sanscreen.client.view.tabular.value;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import com.onaro.util.jfc.grouping.Node;

/**
 * Summarizer that sums numbers based on a condition. Works the same as the ConditionalSumUniqueNumberColumnSummarizer
 * except does not add the unique value requirement.
 *
 */
public class ConditionalSumNumberColumnSummarizer extends ConditionalSumUniqueNumberColumnSummarizer {

	public ConditionalSumNumberColumnSummarizer(NodeCondition condition, int column, String format) {
		super(condition, column, format);
	}

	public ConditionalSumNumberColumnSummarizer(NodeCondition condition, int column) {
		super(condition, column);
	}

	@Override
	public void updateSummary(Node node) {
        List<Object> values = new LinkedList<Object>();
        int otherValuesCount = 0;
        for (int i = 0; i < node.getChildCount(); ++i) {
            Node child = node.getChild(i);
            if (condition == null || condition.count(child)) {
	            Object value = child.getValueAt(column);
	            values.add(value);
	
	            if ((value instanceof SumNumberValue)) ++otherValuesCount;
            }
        }

        if (!values.isEmpty() && otherValuesCount == 0) {
            Iterator<Object> valueItr = values.iterator();
            if (values.size() == 1) {
            	Object value = valueItr.next();
            	if (value instanceof NumberValue) {
            		node.setValueAt(column, new SumNumberValue((NumberValue)value));
            	} else {
            		node.setValueAt(column, value);
            	}
            } else  {
                double sum = 0;
                while (valueItr.hasNext()) {
                    Object value = valueItr.next();
                    if (value instanceof NumberValue) {
                        sum += ((NumberValue) value).getNumber();
                    } else if (value instanceof Number) {
                    	sum += ((Number)value).doubleValue();
                    }
                }
                node.setValueAt(column, new SumNumberValue(sum));
            }
        }
	}
}