// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.test.utils;

import java.net.URLEncoder;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeMap;

public class SignRequest {
	public static String url;
	public static String apikey;
	public static String secretkey;
	public static String command;
	
	
	public static void main (String[] args) {
		// Parameters
		List<String> argsList = Arrays.asList(args);
		Iterator<String> iter = argsList.iterator();
		while (iter.hasNext()) {
			String arg = iter.next();
			if (arg.equals("-a")) {
				apikey = iter.next();
				
			}
			if (arg.equals("-u")) {
				url = iter.next();
			}
			
			if (arg.equals("-s")) {
				secretkey = iter.next();
			}
		}
		
		
		if (url == null) {
			System.out.println("Please specify url with -u option. Example: -u \"command=listZones&id=1\"");
			System.exit(1);
		}
		
		if (apikey == null) {
			System.out.println("Please specify apikey with -a option");
			System.exit(1);
		}
		
		if (secretkey == null) {
			System.out.println("Please specify secretkey with -s option");
			System.exit(1);
		}
		
		TreeMap<String, String> param = new TreeMap<String, String>();
		
		String temp = "";
		param.put("apikey", apikey);
		
		StringTokenizer str1 = new StringTokenizer (url, "&");
		while(str1.hasMoreTokens()) {
			String newEl = str1.nextToken();
			StringTokenizer str2 = new StringTokenizer(newEl, "=");
			String name = str2.nextToken();
			String value= str2.nextToken();
			param.put(name, value);
		}
		
		//sort url hash map by key
		Set c = param.entrySet();
		Iterator it = c.iterator();
		while (it.hasNext()) {
			Map.Entry me = (Map.Entry)it.next();
			String key = (String) me.getKey();
			String value = (String) me.getValue();
			try {
				temp = temp + key + "=" + URLEncoder.encode(value, "UTF-8") + "&";
			} catch (Exception ex) {
				System.out.println("Unable to set parameter " + value + " for the command " + param.get("command"));
			}
			
		}
		temp = temp.substring(0, temp.length()-1 );
		String requestToSign = temp.toLowerCase();	
		System.out.println("After sorting: " + requestToSign);
		String signature = UtilsForTest.signRequest(requestToSign, secretkey);
		System.out.println("After Base64 encoding: " + signature);
		String encodedSignature = "";
		try {
			encodedSignature = URLEncoder.encode(signature, "UTF-8");
		} catch (Exception ex) {
			System.out.println(ex);
		}
		System.out.println("After UTF8 encoding: " + encodedSignature);
		String url = temp + "&signature=" + encodedSignature;
		System.out.println("After sort and add signature: " + url);
		
	}
}
