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#include "cookie_monster_delegate_qt.h"

#include "base/bind.h"
#include "base/memory/ptr_util.h"
#include "base/task/post_task.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "net/cookies/cookie_util.h"

#include "api/qwebenginecookiestore.h"
#include "api/qwebenginecookiestore_p.h"
#include "type_conversion.h"

namespace QtWebEngineCore {

static GURL sourceUrlForCookie(const QNetworkCookie &cookie)
{
    QString urlFragment = QStringLiteral("%1%2").arg(cookie.domain()).arg(cookie.path());
    return net::cookie_util::CookieOriginToURL(urlFragment.toStdString(), /* is_https */ cookie.isSecure());
}

CookieMonsterDelegateQt::CookieMonsterDelegateQt()
    : m_client(0)
    , m_cookieMonster(nullptr)
{
}

CookieMonsterDelegateQt::~CookieMonsterDelegateQt()
{

}

void CookieMonsterDelegateQt::AddStore(net::CookieStore *store)
{
    std::unique_ptr<net::CookieChangeSubscription> sub = store->GetChangeDispatcher().AddCallbackForAllChanges(
            base::Bind(&CookieMonsterDelegateQt::OnCookieChanged,
                       // this object's destruction will deregister the subscription.
                       base::Unretained(this)));

    m_subscriptions.push_back(std::move(sub));
}

bool CookieMonsterDelegateQt::hasCookieMonster()
{
    return m_cookieMonster;
}

void CookieMonsterDelegateQt::getAllCookies(quint64 callbackId)
{
    net::CookieMonster::GetCookieListCallback callback =
            base::BindOnce(&CookieMonsterDelegateQt::GetAllCookiesCallbackOnIOThread, this, callbackId);

    base::PostTaskWithTraits(FROM_HERE, {content::BrowserThread::IO},
                             base::BindOnce(&CookieMonsterDelegateQt::GetAllCookiesOnIOThread, this, std::move(callback)));
}

void CookieMonsterDelegateQt::GetAllCookiesOnIOThread(net::CookieMonster::GetCookieListCallback callback)
{
    if (m_cookieMonster)
        m_cookieMonster->GetAllCookiesAsync(std::move(callback));
}

void CookieMonsterDelegateQt::setCookie(quint64 callbackId, const QNetworkCookie &cookie, const QUrl &origin)
{
    Q_ASSERT(hasCookieMonster());
    Q_ASSERT(m_client);

    net::CookieStore::SetCookiesCallback callback;
    if (callbackId != CallbackDirectory::NoCallbackId)
        callback = base::BindOnce(&CookieMonsterDelegateQt::SetCookieCallbackOnIOThread, this, callbackId);

    GURL gurl = origin.isEmpty() ? sourceUrlForCookie(cookie) : toGurl(origin);

    base::PostTaskWithTraits(FROM_HERE, {content::BrowserThread::IO},
                             base::BindOnce(&CookieMonsterDelegateQt::SetCookieOnIOThread, this,
                                            gurl, cookie.toRawForm().toStdString(), std::move(callback)));
}

void CookieMonsterDelegateQt::SetCookieOnIOThread(const GURL &url, const std::string &cookie_line,
                                                  net::CookieMonster::SetCookiesCallback callback)
{
    net::CookieOptions options;
    options.set_include_httponly();

    if (m_cookieMonster)
        m_cookieMonster->SetCookieWithOptionsAsync(url, cookie_line, options, std::move(callback));
}

void CookieMonsterDelegateQt::deleteCookie(const QNetworkCookie &cookie, const QUrl &origin)
{
    Q_ASSERT(hasCookieMonster());
    Q_ASSERT(m_client);

    GURL gurl = origin.isEmpty() ? sourceUrlForCookie(cookie) : toGurl(origin);

    base::PostTaskWithTraits(FROM_HERE, {content::BrowserThread::IO},
                             base::BindOnce(&CookieMonsterDelegateQt::DeleteCookieOnIOThread, this,
                                            gurl, cookie.name().toStdString()));
}

void CookieMonsterDelegateQt::DeleteCookieOnIOThread(const GURL &url, const std::string &cookie_name)
{
    if (m_cookieMonster) {
        net::CookieMonster::GetCookieListCallback callback =
            base::BindOnce(&CookieMonsterDelegateQt::GetCookiesToDeleteCallback, this, cookie_name);
        m_cookieMonster->GetAllCookiesForURLAsync(url, std::move(callback));
    }
}

void CookieMonsterDelegateQt::GetCookiesToDeleteCallback(const std::string &cookie_name, const net::CookieList &cookies,
                                                         const net::CookieStatusList &statusList)
{
    Q_UNUSED(statusList);
    if (!m_cookieMonster)
        return;

    net::CookieList cookiesToDelete;
    for (auto cookie : cookies) {
        if (cookie.Name() == cookie_name)
            cookiesToDelete.push_back(cookie);
    }
    for (auto cookie : cookiesToDelete)
        m_cookieMonster->DeleteCanonicalCookieAsync(cookie, base::DoNothing());
}


void CookieMonsterDelegateQt::deleteSessionCookies(quint64 callbackId)
{
    Q_ASSERT(hasCookieMonster());
    Q_ASSERT(m_client);

    net::CookieMonster::DeleteCallback callback =
        base::BindOnce(&CookieMonsterDelegateQt::DeleteCookiesCallbackOnIOThread, this, callbackId);
    base::PostTaskWithTraits(FROM_HERE, {content::BrowserThread::IO},
                             base::BindOnce(&CookieMonsterDelegateQt::DeleteSessionCookiesOnIOThread, this, std::move(callback)));
}

void CookieMonsterDelegateQt::DeleteSessionCookiesOnIOThread(net::CookieMonster::DeleteCallback callback)
{
    if (m_cookieMonster)
        m_cookieMonster->DeleteSessionCookiesAsync(std::move(callback));
}

void CookieMonsterDelegateQt::deleteAllCookies(quint64 callbackId)
{
    Q_ASSERT(hasCookieMonster());
    Q_ASSERT(m_client);

    net::CookieMonster::DeleteCallback callback =
        base::BindOnce(&CookieMonsterDelegateQt::DeleteCookiesCallbackOnIOThread, this, callbackId);
    base::PostTaskWithTraits(FROM_HERE, {content::BrowserThread::IO},
                             base::BindOnce(&CookieMonsterDelegateQt::DeleteAllOnIOThread, this, std::move(callback)));
}

void CookieMonsterDelegateQt::DeleteAllOnIOThread(net::CookieMonster::DeleteCallback callback)
{
    if (m_cookieMonster)
        m_cookieMonster->DeleteAllAsync(std::move(callback));
}

void CookieMonsterDelegateQt::setCookieMonster(net::CookieMonster *monster)
{
    if (monster == m_cookieMonster)
        return;

    m_subscriptions.clear();
    if (monster)
        AddStore(monster);

    m_cookieMonster = monster;

    if (!m_client)
        return;

    if (monster)
        m_client->d_func()->processPendingUserCookies();
    else
        m_client->d_func()->rejectPendingUserCookies();
}

void CookieMonsterDelegateQt::setClient(QWebEngineCookieStore *client)
{
    m_client = client;

    if (!m_client)
        return;

    m_client->d_func()->delegate = this;

    if (hasCookieMonster())
        m_client->d_func()->processPendingUserCookies();
}

bool CookieMonsterDelegateQt::canSetCookie(const QUrl &firstPartyUrl, const QByteArray &/*cookieLine*/, const QUrl &url) const
{
    if (!m_client)
        return true;

    return m_client->d_func()->canAccessCookies(firstPartyUrl, url);
}

bool CookieMonsterDelegateQt::canGetCookies(const QUrl &firstPartyUrl, const QUrl &url) const
{
    if (!m_client)
        return true;

    return m_client->d_func()->canAccessCookies(firstPartyUrl, url);
}

void CookieMonsterDelegateQt::OnCookieChanged(const net::CanonicalCookie &cookie, net::CookieChangeCause cause)
{
    if (!m_client)
        return;
    m_client->d_func()->onCookieChanged(toQt(cookie), cause != net::CookieChangeCause::INSERTED);
}

void CookieMonsterDelegateQt::GetAllCookiesCallbackOnIOThread(qint64 callbackId, const net::CookieList &cookies, const net::CookieStatusList &statusList)
{
    QByteArray rawCookies;
    for (auto &&cookie : cookies)
        rawCookies += toQt(cookie).toRawForm() % QByteArrayLiteral("\n");

    base::PostTaskWithTraits(
                FROM_HERE, {content::BrowserThread::UI},
                base::BindOnce(&CookieMonsterDelegateQt::GetAllCookiesCallbackOnUIThread, this, callbackId, rawCookies));
}

void CookieMonsterDelegateQt::SetCookieCallbackOnIOThread(qint64 callbackId, net::CanonicalCookie::CookieInclusionStatus status)
{
    base::PostTaskWithTraits(
                FROM_HERE, {content::BrowserThread::UI},
                base::BindOnce(&CookieMonsterDelegateQt::SetCookieCallbackOnUIThread, this, callbackId, status));
}

void CookieMonsterDelegateQt::DeleteCookiesCallbackOnIOThread(qint64 callbackId, uint numCookies)
{
    base::PostTaskWithTraits(
                FROM_HERE, {content::BrowserThread::UI},
                base::BindOnce(&CookieMonsterDelegateQt::DeleteCookiesCallbackOnUIThread, this, callbackId, numCookies));
}

void CookieMonsterDelegateQt::GetAllCookiesCallbackOnUIThread(qint64 callbackId, const QByteArray &cookies)
{
    if (m_client)
        m_client->d_func()->onGetAllCallbackResult(callbackId, cookies);
}

void CookieMonsterDelegateQt::SetCookieCallbackOnUIThread(qint64 callbackId, net::CanonicalCookie::CookieInclusionStatus status)
{
    if (m_client)
        m_client->d_func()->onSetCallbackResult(callbackId,
                                                status == net::CanonicalCookie::CookieInclusionStatus::INCLUDE);
}

void CookieMonsterDelegateQt::DeleteCookiesCallbackOnUIThread(qint64 callbackId, uint numCookies)
{
    if (m_client)
        m_client->d_func()->onDeleteCallbackResult(callbackId, numCookies);
}
}