//  This file is part of Friendiqa
//  https://git.friendi.ca/lubuwest/Friendiqa
//  Copyright (C) 2017 Marco R. <thomasschmidt45@gmx.net>
//
//  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.
//
//  In addition, as a special exception, the copyright holders give
//  permission to link the code of portions of this program with the
//  OpenSSL library under certain conditions as described in each
//  individual source file, and distribute linked combinations including
//  the two.
//
//  You must obey the GNU General Public License in all respects for all
//  of the code used other than OpenSSL. If you modify file(s) with this
//  exception, you may extend this exception to your version of the
//  file(s), but you are not obligated to do so. If you do not wish to do
//  so, delete this exception statement from your version. If you delete
//  this exception statement from all source files in the program, then
//  also delete it here.
//
//  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 "updatenews.h"

#include <QHttpPart>
#include <QTextCodec>
#include <QUrlQuery>
#include <QList>
#include <QDataStream>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QQmlEngine>
#include <QSqlQuery>
#include <QSqlRecord>
#include <QSqlDatabase>
#include <QSqlError>
#include <QDateTime>
#include "xhr.h"


UPDATENEWS *UPDATENEWS::instance()
{
    static UPDATENEWS udn;
    return &udn;
}

UPDATENEWS::UPDATENEWS(QObject *parent) : QObject(parent)
{

}

void UPDATENEWS::setUrl(QString url)
{
   if (url!=m_url) {
       m_url = url;
       emit urlChanged(m_url);
   }
}


void UPDATENEWS::setDatabase()
{
    static QQmlEngine qe;
    QString db_url=qe.offlineStorageDatabaseFilePath("Friendiqa");
    m_db = QSqlDatabase::addDatabase("QSQLITE");
    m_db.setDatabaseName(QUrl("file://"+db_url+".sqlite").toLocalFile());
    qDebug() << db_url;

      if (!m_db.open())
      {
         qDebug() << "Error: connection with database fail " << m_db.lastError();
      }
      else
      {
         qDebug() << "Database: connection ok";
      }
}


void UPDATENEWS::login()
{
    qDebug() << "login";
    QSqlQuery query("SELECT * FROM config WHERE isActive=0",m_db);
    qDebug() <<"size "<< query.size();
    while (query.next())
    {
       username = query.value(1).toString();
       QByteArray bpassword=query.value(2).toByteArray();
       QString password=QByteArray::fromBase64(bpassword);
       m_login=username+":"+password ;
       //emit this->loginChanged(m_login);
       m_url=query.value(0).toString();
       QString isActive=query.value(7).toString();

       qDebug() << " username " << username<< password << m_url << isActive;
       //UPDATENEWS::connect(&UPDATENEWS::getLogin,SIGNAL(loginChanged(QString)),this,SLOT(XHR::login(QString)));
       m_api="/api/statuses/friends_timeline";
    }
    //return m_login;
}


void UPDATENEWS::timeline()
{
    QSqlQuery query("SELECT status_id FROM news WHERE username='"+ username +"' ORDER BY status_id DESC LIMIT 1",m_db);
    if (query.isActive() && query.isSelect()){query.first();};
    QString lastid=query.value(0).toString();
    //query.finish();
    qDebug() << lastid << query.at();
    clearParams();
    setParam("since_id",lastid);
    setParam("count","50");
    get();
    QObject::connect(this,&UPDATENEWS::success,this,&UPDATENEWS::store);
}

void UPDATENEWS::store(QByteArray serverreply,QString apiname)
{
    //qDebug() <<  serverreply;
    QJsonDocument news;
    QJsonParseError jsonerror;
    news=QJsonDocument::fromJson(serverreply,&jsonerror);
    qDebug() << news.isArray()<<news.isObject()<<news.isEmpty()<<jsonerror.errorString();
    if (news.isArray()){
     qDebug() << " isArray ";
     //QJsonArray array = news.//news.toArray();
     for (int i=0; i < news.array().count();i++){
         QJsonValue newsitem=news[i];
         QSqlQuery query(m_db);
         query.prepare("INSERT INTO news (username,messagetype,text,created_at,in_reply_to_status_id,source,status_id,in_reply_to_user_id,geo,favorited,uid,statusnet_html,statusnet_conversation_id,friendica_activities,friendica_activities_self,attachments,friendica_owner) " "VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)");
         query.bindValue(0,username);
         query.bindValue(1,"0");
         query.bindValue(2, newsitem["text"].toString().toUtf8().toBase64());
         QString sourcedate=newsitem["created_at"].toString();
         QString formateddate=sourcedate.mid(0,3)+", "+sourcedate.mid(8,3)+sourcedate.mid(4,3)+sourcedate.mid(25,5)+sourcedate.mid(10,15);
         query.bindValue(3,QDateTime::fromString(formateddate,Qt::RFC2822Date).toMSecsSinceEpoch() );
         if(newsitem["in_reply_to_status_id"]!=QJsonValue::Null){query.bindValue(4, newsitem["in_reply_to_status_id"].toInt());};
         query.bindValue(5,newsitem["source"]);
         query.bindValue(6,newsitem["id"].toInt());
         if(newsitem["in_reply_to_user_id"]!=QJsonValue::Null){ query.bindValue(7,newsitem["in_reply_to_user_id"].toInt());};
         query.bindValue(8,newsitem["geo"]);
         query.bindValue( 9, newsitem["favorited"].toInt());
         query.bindValue(10, newsitem["user"]["id"].toInt());
         query.bindValue(11, newsitem["statusnet_html"].toString().toUtf8().toBase64());
         query.bindValue(12, newsitem["statusnet_conversation_id"].toInt());
         QJsonArray likeArray;QJsonArray dislikeArray;QJsonArray attendyesArray;QJsonArray attendnoArray;QJsonArray attendmaybeArray;
         if (newsitem.toObject().contains("friendica_activities")){
             for (int a=0; a < newsitem["friendica_activities"]["like"].toArray().count();a++){
                 likeArray.append(newsitem["friendica_activities"]["like"][a]["url"].toString());
             }
             for (int b=0; b < newsitem["friendica_activities"]["dislike"].toArray().count();b++){
                 dislikeArray.append(newsitem["friendica_activities"]["dislike"][b]["url"].toString());
             }
             for (int c=0; c < newsitem["friendica_activities"]["attendyes"].toArray().count();c++){
                 attendyesArray.append(newsitem["friendica_activities"]["attendyes"][c]["url"].toString());
             }
             for (int d=0; d < newsitem["friendica_activities"]["attendno"].toArray().count();d++){
                 attendnoArray.append(newsitem["friendica_activities"]["attendno"][d]["url"].toString());
             }
             for (int e = 0; e < newsitem["friendica_activities"]["attendmaybe"].toArray().count();e++){
                 attendmaybeArray.append(newsitem["friendica_activities"]["attendmaybe"][e]["url"].toString());
             }
         };
         QJsonArray friendica_activities; friendica_activities={likeArray,dislikeArray,attendyesArray,attendnoArray,attendmaybeArray};
         QJsonDocument activities; activities.setArray(friendica_activities);
         query.bindValue(13,activities.toJson(QJsonDocument::Compact).toBase64());
         query.bindValue(14,"[]");

         if (newsitem["attachments"]!=QJsonValue::Undefined){
             query.bindValue(15, QJsonDocument(newsitem["attachments"].toArray()).toJson(QJsonDocument::Compact).toBase64());
         };

         query.bindValue(16, newsitem["friendica_owner"]["url"]);
         qDebug() << query.exec() <<query.lastError();
         //query.finish();
    }
    }
    QList<QJsonValue> newcontacts=findNewContacts(news);
    updateContacts(newcontacts);

    emit updatesuccess();
}


QList <QJsonValue> UPDATENEWS::findNewContacts(QJsonDocument news){
    QSqlQuery query("SELECT profile_image_url FROM contacts",m_db);
    QList<QString> imageurls;
    while (query.next()){
        imageurls.append(query.value(0).toString());
    }
    QList<QJsonValue> newcontacts;
    QList<QString> newcontactimagelinks;
    qDebug()<<news.array().count();
    for (int i=0; i<news.array().count();i++){
        if(imageurls.contains(news[i]["user"]["profile_image_url"].toString()) || newcontactimagelinks.contains(news[i]["user"]["profile_image_url"].toString())){
            qDebug()<<"vorhanden";
            }
        else{ qDebug()<<"newcontact" <<news[i]["user"];
            newcontacts.append(news[i]["user"]);
            newcontactimagelinks.append(news[i]["user"]["profile_image_url"].toString());
        }
    }
    return newcontacts;
}


void UPDATENEWS::updateContacts(QList<QJsonValue> contacts){
    qint64 currentTime =QDateTime::currentMSecsSinceEpoch();
    for (int i=0; i < contacts.count();i++){
        QJsonValue contact=contacts[i];
        QSqlQuery query(m_db);

        query.prepare("INSERT INTO contacts username, id, name, screen_name, location,imageAge, "
                      "profile_image_url, description, profile_image, url, protected, followers_count, "
                      "friends_count, created_at, favourites_count, utc_offset, time_zone, statuses_count,"
                      " following, verified, statusnet_blocking, notifications, statusnet_profile_url,"
                      " cid, network, isFriend, timestamp"
                      "VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)");
        query.bindValue(0,username);
        query.bindValue(1, contact["id"]);
        query.bindValue(2, contact["name"].toString().toUtf8().toBase64());
        query.bindValue(3, contact["screen_name"]);
        query.bindValue(4, contact["location"]);
        query.bindValue(5, currentTime);
        query.bindValue(6, contact["profile_image_url"]);
        query.bindValue(7, contact["description"].toString().toUtf8().toBase64());
        //query.bindValue(8,"")
        query.bindValue(9, contact["url"]);
        query.bindValue(10,contact["protected"]);
        query.bindValue(11,contact["followers_count"]);
        query.bindValue(12,contact["friends_count"]);
        query.bindValue(13,contact["created_at"]);
        query.bindValue(14,contact["favorites_count"]);
        query.bindValue(15,contact["utc_offset"]);
        query.bindValue(16,contact["time_zone"]);
        query.bindValue(17,contact["statuses_count"]);
        query.bindValue(18,contact["following"]);
        query.bindValue(19,contact["verfied"]);
        query.bindValue(20,contact["statusnet_blocking"]);
        query.bindValue(21,contact["notifications"]);
        query.bindValue(22,contact["statusnet_profile_url"]);
        query.bindValue(23,contact["cid"]);
        query.bindValue(24,contact["network"]);
        query.bindValue(25, 1);
        //query.bindValue(26,image_timestamp);

    }
}

QString UPDATENEWS::url() const
{
    return m_url;
}






void UPDATENEWS::setParam(QString name, QString value)
{
    params.insert(name, value);
}

void UPDATENEWS::clearParams()
{
    files.clear();
    params.clear();
}


void UPDATENEWS::get()
{
    QUrlQuery query;

    QHashIterator<QString, QString> i(params);
    while(i.hasNext()) {
        i.next();
        query.addQueryItem(i.key(), i.value());
    }

    QUrl requrl(m_url+m_api);
    qDebug() << requrl;
    requrl.setQuery(query);
    QByteArray loginData = m_login.toLocal8Bit().toBase64();
    QString headerData = "Basic " + loginData;
    request.setRawHeader("Authorization", headerData.toLocal8Bit());
    request.setUrl(requrl);
    reply = manager.get(request);

    connect(reply, &QNetworkReply::finished, this, &UPDATENEWS::onReplySuccess);
    connect(reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(onReplyError(QNetworkReply::NetworkError)));
    connect(reply, &QNetworkReply::readyRead, this, &UPDATENEWS::onReadyRead);
    connect(reply, &QNetworkReply::sslErrors, this, &UPDATENEWS::onSSLError);
}

void UPDATENEWS::onReplyError(QNetworkReply::NetworkError code)
{
    qDebug() << code;
    emit this->error( bufferToString(), m_url,m_api, (int) code);
    buffer.clear();
    reply->deleteLater();
}

void UPDATENEWS::onReplySuccess()
{
    qDebug() << "!";
    emit this->success( buffer, m_api);
    buffer.clear();
//    reply->deleteLater();
}

void UPDATENEWS::onReadyRead()
{
    qDebug() << ".";
    buffer += reply->readAll();
}

void UPDATENEWS::onSSLError(const QList<QSslError> &errors)
{
    qDebug() << "XHR::onSSLError :" ;
    QListIterator<QSslError> ierrs(errors);
    while(ierrs.hasNext()) {
        qDebug() << "\t" <<  ierrs.next().errorString();
    }
}

QString UPDATENEWS::bufferToString()
{
    return QTextCodec::codecForName("utf-8")->toUnicode(buffer);
}