package com.iamberry.nuonuo.service;


import com.iamberry.nuonuo.bean.RequestMode;
import com.iamberry.nuonuo.exception.ExConstants;
import com.iamberry.nuonuo.exception.OpensnsException;
import com.iamberry.nuonuo.util.SecurityUtil;
import com.iamberry.nuonuo.util.StateData;
import com.iamberry.nuonuo.util.ValidataUtil;
import net.sf.json.xml.XMLSerializer;
import org.json.JSONObject;

import java.util.Map;

/**
* 提供访问爱信诺开放平台 OpenApiV1 的接口
 * @author sdk.jss.com.cn
 * @version 2.0
 * @since jdk1.6
*/
public class OpenApiV1{

	/**
	 * 执行API调用
	 * @param serverName 服务器的地址
	 * @param headers  请求头参数
	 * @param requestMode 请求体model
	 * @return  返回服务器响应内容
	 * @throws OpensnsException
	 */
	public String handle(String serverName, Map<String, String> headers, RequestMode requestMode) throws OpensnsException {
		// 客户端请求的数据进行基本校验
		requestDataValidata(serverName, headers, requestMode);
		String dataType = (String) headers.get("dataType");
		String signMethod = (String) headers.get("signMethod");
		String clientReqParam = "";
		String aesParams = "";
		try {
			if ("json".equalsIgnoreCase(dataType)) {
				clientReqParam = installJsonStr(requestMode, clientReqParam);
			} else if ("xml".equalsIgnoreCase(dataType)) {
				clientReqParam = installXmlStr(requestMode);
			}
		} catch (Exception e) {
			throw new OpensnsException(ExConstants.input_Data_Type, ExConstants.input_Data_Type_Msg);
		}
//		System.out.println("客户端组装的参数格式-->：" + clientReqParam);
		try {
			// 每个APP密钥不同，根据当前APP赋值相应密钥值
			aesParams = (String) SecurityUtil.AESEncrypt(clientReqParam, StateData.app_secret);
		} catch (Exception e) {
			throw new OpensnsException(ExConstants.security_Decryption, ExConstants.security_Encryption_Msg);
		}
		// 发送请求(客户端可以自定义自己的请求)
		HttpClientService httpService = new HttpClientService();
		String result = httpService.sendSyncSingleHttp(serverName, headers, aesParams);
		// 如果返回值为密文，此处进行AES解密操作
		if ("AES/AES".equalsIgnoreCase(signMethod)) {	//{"result":"","code":"E9301","describe":"企业信息备案错误,请联系诺诺网"}
			result = String.valueOf(SecurityUtil.AESDecrypt(result, StateData.app_secret));
		}
		return result;
	}


	/**
	 * 客户端请求数据校验
	 * @param headers
	 * @param requestMode
	 * @throws OpensnsException
	 */
	private void requestDataValidata(String serverName, Map<String, String> headers, RequestMode requestMode) throws OpensnsException {
		if (ValidataUtil.isEmpty(serverName) || (headers == null || headers.isEmpty()) || requestMode == null
				|| requestMode.getPublic() == null || requestMode.getPrivate() == null) {
			throw new OpensnsException(ExConstants.input_Data_Null, ExConstants.input_Data_Null_Msg);
		}
		// 检查header参数不为空
		if (ValidataUtil.isEmpty(headers.get("appKey")) // appkey
				|| ValidataUtil.isEmpty(headers.get("dataType"))// 数据格式<xml/json>
				|| ValidataUtil.isEmpty(headers.get("accessToken"))// 授权码
				|| ValidataUtil.isEmpty(headers.get("appRate"))) {
			throw new OpensnsException(ExConstants.input_Data_Type, ExConstants.input_Data_Type_Msg1);
		}
		// 检查加密算法
		if (!valiSignMethod(String.valueOf(headers.get("signMethod")))) {
			throw new OpensnsException(ExConstants.security_Decryption_arithmeticNULL,
					ExConstants.security_Decryption_arithmeticNULL_Msg);
		}
		// 检查public参数不为空
		if (ValidataUtil.isEmpty(requestMode.getPublic().getMethod())
				|| ValidataUtil.isEmpty(requestMode.getPublic().getTimestamp())
				|| ValidataUtil.isEmpty(requestMode.getPublic().getVersion())) {
			throw new OpensnsException(ExConstants.input_Data_Type, ExConstants.input_Data_Null_Msg);
		}
		String dataType = (String) headers.get("dataType");
		// 检查public参数不为空
		if ((!"json".equalsIgnoreCase(dataType)) && (!"xml".equalsIgnoreCase(dataType))) {
			throw new OpensnsException(ExConstants.input_Data_Type, ExConstants.input_Data_Type_Msg);
		}
	}
	
	/**
	 * 判断加密方法是否正确
	 *   true 正确
	 * @param signMethod
	 * @return
	 */
	private boolean valiSignMethod(String signMethod) {
		boolean isFlag = false;
		if ("AES".equalsIgnoreCase(signMethod) || "AES/AES".equalsIgnoreCase(signMethod)) {
			isFlag = true;
		}
		return isFlag;
	}


	/**
	 * 组装成JSON格式字符串
	 * @param requestMode
	 * @param clientReqParam
	 * @return
	 */
	private String installJsonStr(RequestMode requestMode, String clientReqParam) throws Exception {
		JSONObject jSONObj = new JSONObject();
		JSONObject publicObj = new JSONObject();
		JSONObject privateObj = new JSONObject();
		publicObj.put("method", requestMode.getPublic().getMethod());
		publicObj.put("version", requestMode.getPublic().getVersion());
		publicObj.put("timestamp", requestMode.getPublic().getTimestamp());
		privateObj.put("servicedata", requestMode.getPrivate().getServicedata());
		jSONObj.put("public", publicObj);
		jSONObj.put("private", privateObj);
		clientReqParam = jSONObj.toString();
		return clientReqParam;
	}


	/**
	 * 组装成XML格式字符串
	 * @param requestMode
	 * @return
	 */
	private String installXmlStr(RequestMode requestMode) throws Exception {
		net.sf.json.JSONObject jsonObject = net.sf.json.JSONObject.fromObject(requestMode);
		XMLSerializer xml = new XMLSerializer();
		String xmlStr = xml.write(jsonObject, "UTF-8");
		return xmlStr;
	}
	
}