package com.tenwa.workflow;

import java.net.URLDecoder;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.commons.lang.StringUtils;

public class QueryUtil {
	
	public static Map<String, String> getRequestParameterMapByAjax(HttpServletRequest request) {
		Map<String,String> model = getSessionAttributesMap(request);
		try {
			model.putAll(getRequestParameterMapByAjax(request, null));
		} catch (Exception e) {
		}
		return model;
	}
    public static Map<String,String> getSessionAttributesMap(HttpServletRequest request){
    	Map<String, String> model = new HashMap<String, String>();
		HttpSession session = request.getSession(false);
		Enumeration<?> attributeNamesEnum = session.getAttributeNames();
		while (attributeNamesEnum.hasMoreElements()) {
			Object keyObj = attributeNamesEnum.nextElement();
			if (keyObj instanceof String) {
				String key = StringUtil.nullToString(keyObj);
				if (!key.isEmpty()) {
					Object valueObj = session.getAttribute(key);
					String value = StringUtil.nullToString(valueObj);
					if (!value.isEmpty()) {
						model.put(key, value);
					}
				}
			}
		}
		return  model;
    }
	public static Map<String, String> getRequestParameterMapByAjax(HttpServletRequest request, String fieldPrefixRemove) throws Exception {
		Map<String,String> model = getSessionAttributesMap(request);
		model.putAll(getRequestParameterMapByAjax(request, fieldPrefixRemove, true));
		return model;
	}
	public static Map<String, String> getRequestParameterMapByAjax(HttpServletRequest request, String fieldPrefixRemove, boolean decodeURL)
			throws Exception {
		Map<String,String> model = getSessionAttributesMap(request);
		model.putAll(getRequestParameterMapByAjax((Map<String, String[]>) request.getParameterMap(), fieldPrefixRemove, decodeURL));
		return model;
	}
	public static Map<String, String> getRequestParameterMapByAjax(Map<String, String[]> requestParameterMap, String fieldPrefixRemove,
			boolean decodeURL) {
		String prefixRemove = "";
		if (fieldPrefixRemove != null && !"".equals(fieldPrefixRemove))
			prefixRemove = fieldPrefixRemove;

		if (requestParameterMap == null) {
			return new HashMap<String, String>();
		}

		Map<String, String> parameters = new HashMap<String, String>(requestParameterMap.size());

		for (Iterator<String> keys = requestParameterMap.keySet().iterator(); keys.hasNext();) {
			String key = keys.next();

			if (StringUtils.isBlank(key)) {
				continue;
			}
			String entityFieldName = key;
			if (!"".equals(prefixRemove) && entityFieldName.startsWith(prefixRemove)) {
				entityFieldName = key.substring(prefixRemove.length());
			}
			String[] values;
			Object valuesObj = requestParameterMap.get(key);
			if (valuesObj instanceof String) {
				values = new String[] { (String) valuesObj };
			} else {
				values = (String[]) valuesObj;
			}
			Object value = ((values == null) ? null
					: (values.length == 1 ? (Object) values[0] : ("[" + StringUtil.join(values, ",") + "]")/* (Object) values */));
			String strValue = StringUtil.nullToString(value);
			if (strValue.isEmpty()) {
				parameters.put(entityFieldName, null);
				continue;
			}
			try {

				if (decodeURL) {
 					/*if(!"xmlFileName".equals(entityFieldName)){
						strValue=strValue.replaceAll("%", "%25");
					}*/
					parameters.put(entityFieldName, URLDecoder.decode(strValue ,"UTF-8") );
				} else {
					parameters.put(entityFieldName, strValue);
				}

			} catch (Exception e) {
				try{
					parameters.put(entityFieldName, URLDecoder.decode(strValue.replaceAll("%", "%25") ,"UTF-8"));
				}catch(Exception e1){
					e1.printStackTrace();
				}
			}
		}
		return parameters;
	}
	
	
}