package com.taover.bazhuayun.analysis.common.exceldeal;

import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ExcelHeaderAnnoParser implements ExcelHeaderParser {	
	@Override
	public ExcelHeaderResult parse(List<Object> data, Class headerBeanClass) {		
		Map<Field, Integer> fieldNameToIndex = new HashMap<Field, Integer>();
		List<Field> originDataFieldList = new ArrayList<Field>();
		
		if(data == null || data.isEmpty()) {
			return new ExcelHeaderResult();
		}
		
		Class currClass = headerBeanClass;
		while(currClass != null 
				&& !currClass.getSimpleName().equals("Object")) {
			Field[] fields = currClass.getDeclaredFields();
			for(int i=0; i<fields.length; ++i) {
				Field item = fields[i];
				item.setAccessible(true);
				
				//原始数据
				ExcelOriginData dataAnno = item.getDeclaredAnnotation(ExcelOriginData.class);
				if(dataAnno != null) {
					originDataFieldList.add(item);
					continue;
				}
				
				//表头列
				ExcelHeaderName anno = item.getDeclaredAnnotation(ExcelHeaderName.class);
				if(anno == null || "".equals(anno.value().trim())) {
					continue;
				}
				for(int j=0; j<data.size(); ++j) {
					Object tempJ = data.get(j);
					if(tempJ == null) {
						continue;
					}
					if(anno.value().equals(tempJ.toString())) {
						fieldNameToIndex.put(item, j);
					}
				}
			}
			currClass = headerBeanClass.getSuperclass();
		}
		return new ExcelHeaderResult(fieldNameToIndex, originDataFieldList);
	}
}