package com.peanut.modules.pay.paypal;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;

@Component
@Slf4j
public class PaypalConfig {

    //沙盒
    public static final String modeUrl = "https://api-m.sandbox.paypal.com";
    public static final String CLIENID ="Ab8SeEuhkLGp6Fts9V3Cti0UcXQhITRWZkiHDM3U1fDY9YrrRc5IOcYHPfV6qROhmh0hvgysqrfOCSUr";
    public static final String SECRET ="EF63FGWI9fd4q07Ndvc_h8P7jxiZcGOWn8Ul_y1_EKpluKJNFHOW8BP62Kf1wBDQ3XYIeqF8_kVrDF7C";
    public static final String WEBSCR ="https://www.sandbox.paypal.com/cgi-bin/webscr";//回调验证地址

    //正式
//    public static final String modeUrl = "https://api-m.paypal.com";
//    public static final String CLIENID ="";
//    public static final String SECRET ="";
//    public static final String WEBSCR ="https://www.paypal.com/cgi-bin/webscr";


    public static final String accessTokenURL = "/v1/oauth2/token";
    public static final String createOrderURL = "/v2/checkout/orders";
    public static final String captureURL = "/v2/checkout/orders/%1s/capture";
    public static final String orderInfoURL = "/v2/checkout/orders/";
    public static final String refundURL = "/v2/payments/captures/%1s/refund";
    public static final String refundInfoURL = "/v2/payments/refunds/";



    //回调验证
    public String receiveVerify(String verifyData) throws Exception{
        URL url = new URL(WEBSCR);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        connection.setDoOutput(true);
        OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
        writer.write(verifyData);
        writer.flush();
        writer.close();
        connection.getOutputStream().close();
        InputStream responseStream = connection.getResponseCode() / 100 == 2
                ? connection.getInputStream()
                : connection.getErrorStream();
        Scanner s = new Scanner(responseStream).useDelimiter("\\A");
        String response = s.hasNext() ? s.next() : "";
        System.out.println(response);
        return response;
    }

    //退款查询
    public JSONObject refundInfo(String refundId) throws Exception{
        URL url = new URL(modeUrl+refundInfoURL+refundId);
        HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
        httpConn.setRequestMethod("GET");
        httpConn.setRequestProperty("Content-Type", "application/json");
        httpConn.setRequestProperty("Authorization", "Bearer " + getAccessToken().get("access_token"));

        InputStream responseStream = httpConn.getResponseCode() / 100 == 2
                ? httpConn.getInputStream()
                : httpConn.getErrorStream();
        Scanner s = new Scanner(responseStream).useDelimiter("\\A");
        String response = s.hasNext() ? s.next() : "";
        System.out.println(response);
        return JSONObject.parseObject(response);
    }

    //退款
    public JSONObject refund(String captureId) throws Exception{
        URL url = new URL(String.format(modeUrl+refundURL,captureId));
        HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
        httpConn.setRequestMethod("POST");
        httpConn.setRequestProperty("Content-Type", "application/json");
        httpConn.setRequestProperty("Authorization", "Bearer " + getAccessToken().get("access_token"));
        httpConn.setRequestProperty("Prefer", "return=representation");
        httpConn.setDoOutput(true);

        InputStream responseStream = httpConn.getResponseCode() / 100 == 2
                ? httpConn.getInputStream()
                : httpConn.getErrorStream();
        Scanner s = new Scanner(responseStream).useDelimiter("\\A");
        String response = s.hasNext() ? s.next() : "";
        System.out.println(response);
        return JSONObject.parseObject(response);
    }

    //订单查询
    public JSONObject orderInfo(String paypalOrderId) throws Exception{
        URL url = new URL(modeUrl+orderInfoURL+paypalOrderId);
        HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
        httpConn.setRequestMethod("GET");
        httpConn.setRequestProperty("Authorization", "Bearer " + getAccessToken().get("access_token"));

        InputStream responseStream = httpConn.getResponseCode() / 100 == 2
                ? httpConn.getInputStream()
                : httpConn.getErrorStream();
        Scanner s = new Scanner(responseStream).useDelimiter("\\A");
        String response = s.hasNext() ? s.next() : "";
        System.out.println(response);
        return JSONObject.parseObject(response);
    }

    //用户授权支付成功，进行扣款操作
    public JSONObject capture(String paypalOrderId) throws Exception{
        URL url = new URL(String.format(modeUrl+captureURL,paypalOrderId));
        HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
        httpConn.setRequestMethod("POST");
        httpConn.setRequestProperty("Content-Type", "application/json");
        httpConn.setRequestProperty("Authorization", "Bearer " + getAccessToken().get("access_token"));

        InputStream responseStream = httpConn.getResponseCode() / 100 == 2
                ? httpConn.getInputStream()
                : httpConn.getErrorStream();
        Scanner s = new Scanner(responseStream).useDelimiter("\\A");
        String response = s.hasNext() ? s.next() : "";
        return JSONObject.parseObject(response);
    }

    //下单
    public JSONObject createOrder(JSONObject jsonObject){
        try{
            URL u = new URL(modeUrl+createOrderURL);
            HttpURLConnection connection = (HttpURLConnection) u.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestProperty("Authorization", "Bearer " + getAccessToken().get("access_token"));
            connection.setDoOutput(true);
            OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
            writer.write(jsonObject.toString());
            writer.flush();
            writer.close();
            connection.getOutputStream().close();
            InputStream responseStream = connection.getResponseCode() / 100 == 2
                    ? connection.getInputStream()
                    : connection.getErrorStream();
            Scanner s = new Scanner(responseStream).useDelimiter("\\A");
            String response = s.hasNext() ? s.next() : "";
            return JSONObject.parseObject(response);
        }catch (Exception e) {
            log.error(">>>>>>>>>>:PayPal创建订单网络连接失败 reason = {}", e.getMessage());
            e.printStackTrace();
            return JSONObject.parseObject("{'error':'PayPal创建订单网络连接失败，请联系管理员'}");
        }
    }

    public JSONObject getAccessToken(){
        try {
            String credentials = CLIENID + ":" + SECRET;
            String encodedCredentials = Base64.getEncoder().encodeToString(credentials.getBytes());
            URL url = new URL(modeUrl+accessTokenURL);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Authorization", "Basic " + encodedCredentials);
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setDoOutput(true);
            String postParameters = "grant_type=client_credentials";
            try (OutputStream os = connection.getOutputStream()) {
                byte[] postParametersBytes = postParameters.getBytes();
                os.write(postParametersBytes);
                os.flush();
            }
            InputStream responseStream = connection.getResponseCode() / 100 == 2
                    ? connection.getInputStream()
                    : connection.getErrorStream();
            Scanner s = new Scanner(responseStream).useDelimiter("\\A");
            String response = s.hasNext() ? s.next() : "";
            return JSONObject.parseObject(response);
        }catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

}