package com.shipmentparcel.backend.Utils.PayU;

import com.shipmentparcel.backend.Entity.ShipmentEntity;
import com.shipmentparcel.backend.Http.Request.AddShipmentRequest;
import com.shipmentparcel.backend.Http.Response.AddPaymentOrderResponse;
import okhttp3.*;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.IOException;
import java.util.concurrent.TimeUnit;

public class PayuApi {
    private static PayuApi payuApi;
    private OkHttpClient httpClient;
    private static final String URL = "https://secure.snd.payu.com";
    private static final String CLIENT_ID = "370489";
    private static final String SECRET_KEY = "20a2786b2cadb9a2e281914f7842cb40";

    public static void main(String[] args) {
        PayuApi.getInstance().createNewOrder(null);
    }

    public static PayuApi getInstance(){
        if (payuApi == null) payuApi = new PayuApi();
        return payuApi;
    }

    public PayuApi() {
        httpClient = new OkHttpClient.Builder()
                .connectTimeout(20, TimeUnit.SECONDS)
                .writeTimeout(20, TimeUnit.SECONDS)
                .readTimeout(20, TimeUnit.SECONDS)
                .followRedirects(false)
                .build();
    }

    public String getJwtToken() {
        String url = URL+"/pl/standard/user/oauth/authorize";
        String bodyStr = "grant_type=client_credentials&client_id="+CLIENT_ID+"&client_secret="+SECRET_KEY;
        RequestBody body = RequestBody.create(MediaType.parse("application/x-www-form-urlencoded"), bodyStr);
        Request request = new Request.Builder().url(url)
                .addHeader("Content-Type","application/x-www-form-urlencoded")
                .post(body)
                .build();
        Response response;
        String responseBody;
        String token = null;
        try {
            response = httpClient.newCall(request).execute();
            responseBody = response.body().string();
            token = new JSONObject(responseBody).getString("access_token");
        } catch (IOException e) {
            e.printStackTrace();
        }

        return token;
    }

    public AddPaymentOrderResponse createNewOrder(ShipmentEntity shipment) {
        String url = URL+"/api/v2_1/orders/";

        String token = getJwtToken();

        JSONObject order = new JSONObject();
        JSONObject buyer = new JSONObject();
        buyer.put("firstName",shipment.getSender().getFirstName());
        buyer.put("lastName",shipment.getSender().getLastName());
        buyer.put("email",shipment.getSender().getEmail());
        buyer.put("phone",shipment.getSender().getPhoneNumber());
        order.put("buyer",buyer);

        JSONArray products = new JSONArray();
        JSONObject product = new JSONObject();
        product.put("name","Shipment " + shipment.getShipmentNumber());
        product.put("unitPrice",String.valueOf(((Double)(shipment.getCost()*100)).intValue()));
        product.put("quantity","1");
        products.put(product);
        order.put("products", products);

        order.put("customerIp", "127.0.0.1")
                //.put("notifyUrl", "http://localhost:8080/payment/notify")
                .put("continueUrl", "http://localhost:4200/send/confirmation")
                .put("merchantPosId", CLIENT_ID)
                .put("description", "Payment for shipment "+shipment.getShipmentNumber())
                .put("currencyCode", "PLN")
                .put("totalAmount", String.valueOf(((Double)(shipment.getCost()*100)).intValue()));

        RequestBody body = RequestBody.create(MediaType.parse("application/json"), order.toString());
        System.out.println(body.toString());
        Request request = new Request.Builder().url(url)
                .addHeader("Content-Type","application/json")
                .addHeader("Authorization","Bearer "+token)
                .post(body)
                .build();
        Response response;
        String responseBody;
        String redirectUrl = null, status = null, orderId=null;
        try {
            response = httpClient.newCall(request).execute();
            responseBody = response.body().string();
            System.out.println(responseBody);
            redirectUrl = new JSONObject(responseBody).getString("redirectUri");
            status = new JSONObject(responseBody).getJSONObject("status").getString("statusCode");
            orderId = new JSONObject(responseBody).getString("orderId");
        } catch (IOException e) {
            e.printStackTrace();
        }

        return new AddPaymentOrderResponse(redirectUrl, status, orderId);
    }


}