/*******************************************************************************
 **
 ** smolbote: yet another qute browser
 ** Copyright (C) 2017  Xian Nox
 **
 ** This program is free software: you can redistribute it and/or modify
 ** it under the terms of the GNU General Public License as published by
 ** the Free Software Foundation, either version 3 of the License, or
 ** (at your option) any later version.
 **
 ** This program is distributed in the hope that it will be useful,
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ** GNU General Public License for more details.
 **
 ** You should have received a copy of the GNU General Public License
 ** along with this program.  If not, see <http://www.gnu.org/licenses/>.
 **
 ******************************************************************************/

#include "blockersubscription.h"
#include "ui_subscriptionform.h"

#include "browser.h"
#include <QNetworkRequest>
#include <QNetworkReply>

#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>

FilterCollection::FilterCollection(const QString path, QWidget *parent) :
    QWidget(parent),
    ui(new Ui::SubscriptionForm)
{
    ui->setupUi(this);

    m_name = "TODO";
    m_path = path;

    qDebug("Adding subscription [%s]", qUtf8Printable(m_path));


    QFile filterFile(m_path);
    if(!filterFile.open(QIODevice::ReadOnly)) {
        qWarning("Could not open filter!");
        return;
    }

    QJsonDocument filters(QJsonDocument::fromJson(filterFile.readAll()));
    load(filters.object());

    qDebug("Added %i rules", m_rules.size());
}

FilterCollection::~FilterCollection()
{
    delete ui;
}

QString FilterCollection::name() const
{
    return m_name;
}

/**
 * Check if a URL request should be blocked or not
 * @param info
 * @return true if it should be blocked; false otherwise
 */
FilterCollection::MatchResult FilterCollection::match(QWebEngineUrlRequestInfo &info)
{
    MatchResult result;

    for(auto rule : qAsConst(m_rules)) {
        result.match = true;
        result.block = rule->match(info);
        result.pattern = rule->filter();
        return result;
    }

    // request matches neither whitelist nor blacklist
    result.match = false;
    result.block = false;
    return result;
}

void FilterCollection::load(const QJsonObject &json)
{
    for(QJsonValue v : json["rules"].toArray()) {
        m_rules.append(createRule(v.toObject()));
    }
}

BlockerRule* FilterCollection::createRule(const QJsonObject &obj)
{
    BlockerRule *rule;

    BlockerRule::NavigationType n;
    BlockerRule::ResourceType r;
    rule = new BlockerRule(RegExp(obj["firstPartyUrl"].toString()), RegExp(obj["requestUrl"].toString()), n, r, obj["shouldBlock"].toBool(), this);

    return rule;
}