/**
 * Copyright 2015-2025 FLY的狐狸(email:jflyfox@sina.com qq:369191470).
 *
 * Licensed 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.jflyfox.jfinal.component.oauth;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.util.HashMap;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.jfinal.log.Log;
import com.jflyfox.jfinal.component.oauth.util.OathConfig;
import com.jflyfox.jfinal.component.oauth.util.TokenUtil;
import com.jflyfox.util.StrUtils;

/**
 * OauthBaidu
 */
public class OauthBaidu extends Oauth {

	private static final long serialVersionUID = 1L;
	private static final Log LOGGER = Log.getLog(OauthBaidu.class);

	private static final String AUTH_URL = "https://openapi.baidu.com/oauth/2.0/authorize";
	private static final String TOKEN_URL = "https://openapi.baidu.com/oauth/2.0/token";
	private static final String USER_INFO_URL = "https://openapi.baidu.com/rest/2.0/passport/users/getInfo";

	private static OauthBaidu oauthBaidu = new OauthBaidu();

	/**
	 * 用于链式操作
	 * 
	 * @return
	 */
	public static OauthBaidu me() {
		return oauthBaidu;
	}

	public OauthBaidu() {
		setClientId(OathConfig.getValue("openid_baidu"));
		setClientSecret(OathConfig.getValue("openkey_baidu"));
		setRedirectUri(OathConfig.getValue("redirect_baidu"));
	}

	/**
	 * @throws UnsupportedEncodingException
	 *             获取授权url
	 *             DOC：http://developer.baidu.com/wiki/index.php?title=docs
	 *             /oauth
	 * @param @return 设定文件
	 * @return String 返回类型
	 * @throws
	 */
	public String getAuthorizeUrl(String state) throws UnsupportedEncodingException {
		Map<String, String> params = new HashMap<String, String>();
		params.put("response_type", "code");
		params.put("client_id", getClientId());
		params.put("redirect_uri", getRedirectUri());
		if (StrUtils.isNotEmpty(state)) {
			params.put("state", state); // OAuth2.0标准协议建议，利用state参数来防止CSRF攻击。可存储于session或其他cache中
		}
		return super.getAuthorizeUrl(AUTH_URL, params);
	}

	/**
	 * 获取token
	 * 
	 * @param @param code
	 * @param @return 设定文件
	 * @return String 返回类型
	 * @throws NoSuchProviderException
	 * @throws NoSuchAlgorithmException
	 * @throws KeyManagementException
	 */
	public String getTokenByCode(String code) throws IOException, KeyManagementException, NoSuchAlgorithmException,
			NoSuchProviderException {
		Map<String, String> params = new HashMap<String, String>();
		params.put("code", code);
		params.put("client_id", getClientId());
		params.put("client_secret", getClientSecret());
		params.put("grant_type", "authorization_code");
		params.put("redirect_uri", getRedirectUri());
		String token = TokenUtil.getAccessToken(super.doPost(TOKEN_URL, params));
		LOGGER.debug(token);
		return token;
	}

	/**
	 * 获取UserInfo
	 * 
	 * @return 设定文件
	 * @return String 返回类型
	 * @throws NoSuchProviderException
	 * @throws NoSuchAlgorithmException
	 * @throws KeyManagementException
	 */
	public String getUserInfo(String accessToken) throws IOException, KeyManagementException, NoSuchAlgorithmException,
			NoSuchProviderException {
		Map<String, String> params = new HashMap<String, String>();
		params.put("access_token", accessToken);
		return super.doPost(USER_INFO_URL, params);
	}

	/**
	 * 根据code一步获取用户信息
	 * 
	 * @param @param args 设定文件
	 * @return void 返回类型
	 * @throws NoSuchProviderException
	 * @throws NoSuchAlgorithmException
	 * @throws KeyManagementException
	 */
	public JSONObject getUserInfoByCode(String code) throws IOException, KeyManagementException,
			NoSuchAlgorithmException, NoSuchProviderException {
		String accessToken = getTokenByCode(code);
		if (StrUtils.isEmpty(accessToken)) {
			return null;
		}
		String userInfo = getUserInfo(accessToken);
		JSONObject dataMap = JSON.parseObject(userInfo);
		dataMap.put("access_token", accessToken);
		LOGGER.debug(dataMap.toJSONString());
		return dataMap;
	}
}