/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QT_NO_HTTP

#include <qoauth2implicitgrantflow.h>
#include <qoauthhttpserverreplyhandler.h>

#include <private/qoauth2implicitgrantflow_p.h>

#include <QtCore/qurl.h>
#include <QtCore/qstring.h>
#include <QtCore/qurlquery.h>

#include <QtNetwork/qnetworkaccessmanager.h>

QT_BEGIN_NAMESPACE

QOAuth2ImplicitGrantFlowPrivate::QOAuth2ImplicitGrantFlowPrivate(QNetworkAccessManager *manager) :
    QAbstractOAuth2Private(manager)
{}

QOAuth2ImplicitGrantFlowPrivate::~QOAuth2ImplicitGrantFlowPrivate()
{}

QOAuth2ImplicitGrantFlow::QOAuth2ImplicitGrantFlow(QObject *parent) :
    QAbstractOAuth2(*new QOAuth2ImplicitGrantFlowPrivate(nullptr), parent)
{}

QOAuth2ImplicitGrantFlow::QOAuth2ImplicitGrantFlow(QNetworkAccessManager *manager,
                                                   QObject *parent) :
    QAbstractOAuth2(*new QOAuth2ImplicitGrantFlowPrivate(manager), parent)
{}

QOAuth2ImplicitGrantFlow::QOAuth2ImplicitGrantFlow(const QString &clientIdentifier,
                                                   QNetworkAccessManager *manager,
                                                   QObject *parent) :
    QAbstractOAuth2(*new QOAuth2ImplicitGrantFlowPrivate(manager), parent)
{
    Q_D(QOAuth2ImplicitGrantFlow);
    d->clientCredentials.first = clientIdentifier;
}

QOAuth2ImplicitGrantFlow::~QOAuth2ImplicitGrantFlow()
{}

QString QOAuth2ImplicitGrantFlow::responseType() const
{
    return QStringLiteral("token");
}

void QOAuth2ImplicitGrantFlow::grant()
{
    const QString state = QAbstractOAuth2Private::generateRandomState();
    const QUrl url = authorizationRequestUrl(state);
    Q_EMIT authorizeWithBrowser(url);
}

QUrl QOAuth2ImplicitGrantFlow::authorizationRequestUrl(const QString &state) const
{
    Q_D(const QOAuth2ImplicitGrantFlow);
    typedef QAbstractOAuth2Private::OAuth2KeyString Key;

    QVariantMap parameters;
    QUrl url(d->authorizationUrl);
    parameters.insert(Key::responseType, responseType());
    parameters.insert(Key::clientIdentifier, d->clientCredentials.first);
    parameters.insert(Key::redirectUri, callback());
    parameters.insert(Key::scope, d->scope);
    parameters.insert(Key::state, state);
    url.setQuery(QAbstractOAuth2Private::createQuery(parameters));
    return url;
}

QT_END_NAMESPACE

#endif // QT_NO_HTTP