package com.cloud.common.utils;

import com.alibaba.fastjson.JSON;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

/**
 * Token信息类
 * @author
 * @date
 */
class Token {
	public String accessToken;
	public String tokenType;
	public String refreshToken;
	public String expiresIn;
	public String scope;
	public String getAccessToken() {
		return accessToken;
	}
	public void setAccessToken(String accessToken) {
		this.accessToken = accessToken;
	}
	public String getTokenType() {
		return tokenType;
	}
	public void setTokenType(String tokenType) {
		this.tokenType = tokenType;
	}
	public String getRefreshToken() {
		return refreshToken;
	}
	public void setRefreshToken(String refreshToken) {
		this.refreshToken = refreshToken;
	}
	public String getExpiresIn() {
		return expiresIn;
	}
	public void setExpiresIn(String expiresIn) {
		this.expiresIn = expiresIn;
	}
	public String getScope() {
		return scope;
	}
	public void setScope(String scope) {
		this.scope = scope;
	}
}
/**
 * 获取登录人的token信息类
 * @author
 * @date
 */
public class TokenUtil {

	public static String getAccessToken() {
		try {
			HttpClient httpclient = HttpClients.createDefault();
			HttpPost httppost = new HttpPost("http://127.0.0.1:8080/api-o/oauth/token");
			List<NameValuePair> params = new ArrayList<NameValuePair>(2);
			params.add(new BasicNameValuePair("grant_type", "password"));
			params.add(new BasicNameValuePair("client_id", "system"));
			params.add(new BasicNameValuePair("client_secret", "system"));
			params.add(new BasicNameValuePair("scope", "app"));
			params.add(new BasicNameValuePair("username", "admin|USERNAME"));
			params.add(new BasicNameValuePair("password", "admin"));
			httppost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));

			//Execute and get the response.
			HttpResponse response = httpclient.execute(httppost);
			
			
			String result = EntityUtils.toString(response.getEntity(), "UTF-8");  

	    	Token tokens = JSON.parseObject(result, Token.class);
	    	return tokens.getAccessToken();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IllegalStateException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}
	
}