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Klarna Checkout SDK
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/*
 * Copyright 2015 Klarna AB
 *
 * 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 examples;

import com.klarna.checkout.Connector;
import com.klarna.checkout.ErrorResponseException;
import com.klarna.checkout.IConnector;
import com.klarna.checkout.Order;
import org.json.simple.JSONObject;

import java.io.IOException;
import java.net.URISyntaxException;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

/**
 * The create checkout example.
 */
final class Create {

    /**
     * Empty constructor.
     */
    private Create() {

    }

    /**
     * Runs the example code.
     *
     * @param args Command line arguments
     * @throws URISyntaxException       If URIs are incorrect
     * @throws NoSuchAlgorithmException If connector couldn't be created
     * @throws IOException              If api call failed
     */
    public static void main(final String[] args)
            throws URISyntaxException, NoSuchAlgorithmException, IOException {

        final String eid = "0";
        final String secret = "sharedSecret";

        IConnector connector = Connector.create(
                secret, IConnector.TEST_BASE_URL);

        Order order = new Order(connector);

        // Start a new session.
        final Map merchant;
        merchant = new HashMap() {
            {
                put("id", eid);
                put("terms_uri", "http://example.com/terms.html");
                put("checkout_uri", "http://example.com/checkout.jsp");
                put("confirmation_uri",
                        "http://example.com/thank-you.jsp"
                                + "?klarna_order_id={checkout.order.id}");
                // You can not receive push notification on a
                // non-publicly available uri.
                put("push_uri",
                        "http://example.com/push.jsp"
                                + "?klarna_order_id={checkout.order.id}");
            }
        };

        final Map cart = new HashMap() {
            {
                put("items", new ArrayList>() {
                    {
                        add(new HashMap() {
                            {
                                put("quantity", 2);
                                put("reference", "123456789");
                                put("name", "Klarna t-shirt");
                                put("unit_price", 12300);
                                put("discount_rate", 1000);
                                put("tax_rate", 2500);
                            }
                        });
                        add(new HashMap() {
                            {
                                put("quantity", 1);
                                put("type", "shipping_fee");
                                put("reference", "SHIPPING");
                                put("name", "Shipping Fee");
                                put("unit_price", 4900);
                                put("tax_rate", 2500);
                            }
                        });
                    }
                });
            }
        };

        // Add gui settings
        final Map gui = new HashMap() {
            {
                put("layout", "desktop");
            } // or mobile
        };

        Map data = new HashMap() {
            {
                put("purchase_country", "SE");
                put("purchase_currency", "SEK");
                put("locale", "sv-se");
                put("merchant", merchant);
                put("cart", cart);
                put("gui", gui);
            }
        };

        //data.put("recurring", true);

        try {
            order.create(data);
            order.fetch();

            String orderID = (String) order.get("id");

            System.out.println(orderID);
        } catch (ErrorResponseException e) {
            JSONObject json = e.getJson();

            System.out.println(json.get("http_status_message"));
            System.out.println(json.get("internal_message"));
        }
    }
}