Java tutorial
/* * Copyright (C) 2010 Nullbyte <http://nullbyte.eu> * * 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 com.liato.bankdroid.banking.banks.americanexpress; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.liato.bankdroid.banking.Account; import com.liato.bankdroid.banking.Bank; import com.liato.bankdroid.banking.Transaction; import com.liato.bankdroid.banking.banks.americanexpress.model.Card; import com.liato.bankdroid.banking.banks.americanexpress.model.LoginRequest; import com.liato.bankdroid.banking.banks.americanexpress.model.LoginResponse; import com.liato.bankdroid.banking.banks.americanexpress.model.TransactionDetails; import com.liato.bankdroid.banking.banks.americanexpress.model.TransactionsResponse; import com.liato.bankdroid.banking.exceptions.BankChoiceException; import com.liato.bankdroid.banking.exceptions.BankException; import com.liato.bankdroid.banking.exceptions.LoginException; import com.liato.bankdroid.legacy.R; import com.liato.bankdroid.provider.IAccountTypes; import com.liato.bankdroid.provider.IBankTypes; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.entity.StringEntity; import org.apache.http.protocol.HTTP; import org.joda.time.format.DateTimeFormat; import android.content.Context; import android.support.annotation.Nullable; import java.io.IOException; import java.math.BigDecimal; import java.util.ArrayList; import java.util.List; import eu.nullbyte.android.urllib.CertificateReader; import eu.nullbyte.android.urllib.Urllib; public class AmericanExpress extends Bank { private static final String NAME = "American Express"; private static final int BANKTYPE_ID = IBankTypes.AMERICANEXPRESS; private static final ObjectMapper MAPPER = new ObjectMapper(); @Nullable private LoginResponse loginResponse; public AmericanExpress(Context context) { super(context, R.drawable.logo_americanexpress); super.webViewEnabled = false; } @Override public int getBanktypeId() { return BANKTYPE_ID; } @Override public String getName() { return NAME; } public AmericanExpress(String username, String password, Context context) throws BankException, LoginException, BankChoiceException, IOException { this(context); this.update(username, password); } @Override protected LoginPackage preLogin() throws BankException, IOException { urlopen = new Urllib(context, CertificateReader.getCertificates(context, R.raw.cert_americanexpress_global)); urlopen.setAllowCircularRedirects(true); urlopen.setContentCharset(HTTP.UTF_8); urlopen.addHeader("Face", "sv_SE"); return new LoginPackage(urlopen, null, null, "https://global.americanexpress.com/myca/intl/moblclient/emea/svc/v1/loginSummary.do"); } @Override public Urllib login() throws LoginException, BankException, IOException { LoginPackage lp = preLogin(); loginResponse = parseLoginResponse(urlopen.openAsHttpResponse(lp.getLoginTarget(), new StringEntity(objectAsJson(new LoginRequest(getUsername(), getPassword())), HTTP.UTF_8), true)); urlopen.addHeader("cupcake", loginResponse.getLogonData().getCupcake()); return urlopen; } @Override public void update() throws BankException, LoginException, BankChoiceException, IOException { super.update(); if (getUsername().isEmpty() || getPassword().isEmpty()) { throw new LoginException(res.getText(R.string.invalid_username_password).toString()); } urlopen = login(); for (Card card : loginResponse.getCards()) { Account account = asAccount(card); if (card.isTransactionsEnabled()) { account.setTransactions(fetchTransactionsFor(card)); } accounts.add(account); } if (accounts.isEmpty()) { throw new BankException(res.getText(R.string.no_accounts_found).toString()); } super.updateComplete(); } private List<Transaction> fetchTransactionsFor(Card card) throws IOException, BankException { HttpResponse response = urlopen.openAsHttpResponse( "https://global.americanexpress.com/myca/intl/moblclient/emea/svc/v1/transaction.do", new StringEntity( "{" + "\"billingIndexList\": [\"0\"]," + "\"sortedIndex\":" + card.getSortedIndex() + "}", HTTP.UTF_8), true); if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) { response.getEntity().consumeContent(); throw new BankException(res.getText(R.string.update_transactions_error).toString()); } TransactionsResponse details = MAPPER.reader().withType(TransactionsResponse.class) .readValue(response.getEntity().getContent()); if (details.getTransactionDetails() == null) { throw new BankException(res.getText(R.string.server_error_try_again).toString()); } if (details.getTransactionDetails().getStatus() != 0) { throw new BankException(details.getTransactionDetails().getMessage()); } return transactionsOf(details.getTransactionDetails()); } private List<Transaction> transactionsOf(@Nullable TransactionDetails details) { List<Transaction> transactions = new ArrayList<>(); if (details != null) { for (com.liato.bankdroid.banking.banks.americanexpress.model.Transaction transaction : details .getTransactions()) { transactions.add(asTransaction(transaction)); } } return transactions; } private Transaction asTransaction( com.liato.bankdroid.banking.banks.americanexpress.model.Transaction transaction) { return new Transaction(DateTimeFormat.forPattern("yyyyMMdd") .parseDateTime(Long.toString(transaction.getChargeDate().getRawValue())).toString("yyyy-MM-dd"), transaction.getDescription().get(0), new BigDecimal(transaction.getAmount().getRawValue()).negate()); } private Account asAccount(Card card) { Account account = new Account(card.getCardProductName(), card.getBalance(), card.getCardKey()); account.setType(IAccountTypes.CCARD); return account; } private String objectAsJson(Object value) throws BankException { try { return MAPPER.writeValueAsString(value); } catch (JsonProcessingException e) { throw new BankException(e.getMessage(), e); } } private LoginResponse parseLoginResponse(HttpResponse response) throws IOException, BankException { if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) { response.getEntity().consumeContent(); throw new BankException(res.getText(R.string.server_error_try_again).toString()); } LoginResponse loginResponse = MAPPER.reader().withType(LoginResponse.class) .readValue(response.getEntity().getContent()); if (loginResponse == null || loginResponse.getLogonData() == null) { throw new BankException(res.getText(R.string.server_error_try_again).toString()); } if (loginResponse.getLogonData().getStatus() != 0) { throw new BankException(loginResponse.getLogonData().getMessage()); } return loginResponse; } }