package com.paypal;

import com.paypal.AuthorizeIntentExamples.CreateOrder;
import com.paypal.http.HttpRequest;
import com.paypal.http.HttpResponse;
import com.paypal.http.serializer.Json;
import com.paypal.orders.AmountBreakdown;
import com.paypal.orders.AmountWithBreakdown;
import com.paypal.orders.LinkDescription;
import com.paypal.orders.Money;
import com.paypal.orders.Order;
import com.paypal.orders.OrdersGetRequest;
import com.paypal.orders.OrdersPatchRequest;
import com.paypal.orders.Patch;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONObject;

public class PatchOrder extends PayPalClient {
  private List<Patch> buildRequestBody() throws IOException {
    List<Patch> patches = new ArrayList<>();
    patches.add(new Patch().op("replace").path("/intent").value("CAPTURE"));
    patches.add(new Patch().op("replace").path("/purchase_units/@reference_id=='PUHF'/amount")
        .value(new AmountWithBreakdown().currencyCode("USD").value("200.00")
          .amountBreakdown(new AmountBreakdown().itemTotal(new Money().currencyCode("USD").value("180.00"))
            .taxTotal(new Money().currencyCode("USD").value("20.00")))));
    return patches;
  }
  
  public void patchOrder(String orderId) throws IOException {
    OrdersPatchRequest request = new OrdersPatchRequest(orderId);
    request.requestBody(buildRequestBody());
    client().execute((HttpRequest)request);
    OrdersGetRequest getRequest = new OrdersGetRequest(orderId);
    HttpResponse<Order> response = this.client.execute((HttpRequest)getRequest);
    System.out.println("After Patch:");
    System.out.println("Order ID: " + ((Order)response.result()).id());
    System.out.println("Intent: " + ((Order)response.result()).checkoutPaymentIntent());
    System.out.println("Links: ");
    for (LinkDescription link : (Iterable<LinkDescription>)((Order)response.result()).links())
      System.out.println("\t" + link.rel() + ": " + link.href() + "\tCall Type: " + link.method()); 
    System.out.println("Gross Amount: " + ((Order)response.result()).purchaseUnits().get(0).amountWithBreakdown().currencyCode() + " " + ((Order)
        response.result()).purchaseUnits().get(0).amountWithBreakdown().value());
    System.out.println("Full response body:");
    System.out.println(new JSONObject(new Json().serialize(response.result())).toString(4));
  }
  
  public static void main(String[] args) throws IOException {
    System.out.println("Before PATCH:");
    HttpResponse<Order> response = new CreateOrder().createOrder(true);
    System.out.println("\nAfter PATCH (Changed Intent and Amount):");
    new PatchOrder().patchOrder(((Order)response.result()).id());
  }
}