package foundation.io.file.pull;

import org.apache.poi.xssf.model.SharedStringsTable;
import org.apache.poi.xssf.model.StylesTable;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import foundation.data.entity.Entity;
import foundation.io.object.Titles;


public class SheetHandler extends DefaultHandler {

	private int titleRowNo;
	private int dataRowNo;
	private DataBucket dataBucket;
	private CellRuntime cellRuntime;
	private Titles titles;
	private Entity entity;
	private int rowNo;
	private boolean vIsOpen;
	

	public SheetHandler(SharedStringsTable sharedStrings, StylesTable stylesTable, DataBucket dataBucket, int titleRowNo, int dataRowNo) {
		this.dataBucket = dataBucket;
		this.titleRowNo = titleRowNo;
		this.dataRowNo = dataRowNo;
		
		cellRuntime = new CellRuntime(sharedStrings, stylesTable);
		titles = dataBucket.getTitles();
		rowNo = 0;
	}
	
	private void outputOneRow() throws SAXException {
		
	}
	
	private void onComplete() {
		
	}

	@Override
	public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
		vIsOpen = false;
		
        if ("c".equals(name)) {
			cellRuntime.readAttributes(attributes);
			cellRuntime.clearRawData();
		}
        else if ("inlineStr".equals(name) || "v".equals(name)) {
            vIsOpen = true;
        }
		else if ("row".equals(name)) {
			rowNo = parseRowno(attributes);
			
			if (rowNo >= dataRowNo) {
				entity = dataBucket.addOneLine(rowNo);
			}
		}			
	}

	@Override
	public void endElement(String uri, String localName, String name) throws SAXException {
		try {
			if ("v".equals(name)) {
				if (cellRuntime.isIgnore()) {
					return;
				}
				
				if (titleRowNo == rowNo) {
					titles.add(cellRuntime.parseToString());
				}
				else if (entity != null) {
					entity.set(cellRuntime.getColumnIndex(), cellRuntime.parseToString());
				}
			}
			else if ("row".equals(name)) {
				outputOneRow();
			}
			else if ("worksheet".equals(name)) {
				onComplete();
			}			
		}
		catch (Exception e) {
			e.printStackTrace();
			throw new SAXException(e);
		}		
	}
	
	@Override
	public void characters(char[] ch, int start, int length) throws SAXException {
		if (vIsOpen) {
			cellRuntime.appendValue(ch, start, length);
		}
	}

	private int parseRowno(Attributes attributes) {
		rowNo = Integer.parseInt(attributes.getValue(0));
		return rowNo;
	}

}