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#include <QObject>
#include <QTest>
#include <QSignalSpy>

#include <imapclient.h>
#include <imapstrategy.h>
#include <imapconfiguration.h>

class tst_ImapClient : public QObject
{
    Q_OBJECT

public:
    tst_ImapClient() {}
    virtual ~tst_ImapClient() {}

private slots:
    void initTestCase();
    void cleanupTestCase();

    void test_connection();

private:
    ImapClient *mClient = nullptr;
};

QTEST_MAIN(tst_ImapClient)

#include "tst_imap.moc"

void tst_ImapClient::initTestCase()
{
    QMailAccount account;
    account.setName("Test account for IMAP");
    account.setMessageType(QMailMessage::Email);
    account.setFromAddress(QMailAddress("Account IMAP", "account.imap@example.org"));
    account.setCustomField("test_account", "true");

    QMailAccountConfiguration config;
    config.addServiceConfiguration("imap4");
    ImapConfigurationEditor imap(&config);
    // Provide real server / credentials here
    imap.setMailServer("imap.free.fr");
    imap.setMailUserName("test account");
    imap.setMailPassword("test password");
    //imap.setValue("CredentialsId", "13");
    imap.setMailEncryption(QMailTransport::Encrypt_SSL);
    imap.setMailPort(993);

    QVERIFY(QMailStore::instance()->addAccount(&account, &config));

    mClient = new ImapClient(account.id(), this);
}

void tst_ImapClient::cleanupTestCase()
{
    QMailStore::instance()->removeAccounts(QMailAccountKey::customField("test_account"));
    delete mClient;
    mClient = nullptr;
}

class ConnectionStrategy: public ImapStrategy
{
public:
    void transition(ImapStrategyContextBase *context,
                    const ImapCommand cmd,
                    const OperationStatus op) override
    {
        if (op != OpOk)
            qWarning() << "Test response to cmd:" << cmd << " is not ok: " << op;

        switch (cmd)
            {
            case IMAP_Login:
                context->operationCompleted();
                break;
            default:
                qWarning() << "Unhandled test response:" << cmd;
            }
    }
};

void tst_ImapClient::test_connection()
{
    ConnectionStrategy strategy;
    QSignalSpy completed(mClient, &ImapClient::retrievalCompleted);
    QSignalSpy updateStatus(mClient, &ImapClient::updateStatus);

    mClient->setStrategy(&strategy);
    mClient->newConnection();
    QVERIFY(!completed.wait(2500)); // Fails with wrong credentials

    QCOMPARE(updateStatus.count(), 4);
    QCOMPARE(updateStatus.takeFirst().first().toString(), QString::fromLatin1("DNS lookup"));
    QCOMPARE(updateStatus.takeFirst().first().toString(), QString::fromLatin1("Connected"));
    QCOMPARE(updateStatus.takeFirst().first().toString(), QString::fromLatin1("Checking capabilities"));
    QCOMPARE(updateStatus.takeFirst().first().toString(), QString::fromLatin1("Logging in"));
}