512 lines
17 KiB
C++
512 lines
17 KiB
C++
/*
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Fannyapp - Application to view the cover plan of the Fanny-Leicht-Gymnasium ins Stuttgart Vaihingen, Germany
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Copyright (C) 2019 Itsblue Development <development@itsblue.de>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "headers/serverconn.h"
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ServerConn * pGlobalServConn = nullptr;
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ServerConn::ServerConn(QObject *parent) : QObject(parent)
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{
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qDebug("+----- ServerConn konstruktor -----+");
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pGlobalServConn = this;
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this->networkManager = new QNetworkAccessManager();
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this->refreshNetworkManager = new QNetworkAccessManager();
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// check login state
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int perm = pGlobalAppSettings->loadSetting("permanent").toInt();
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qDebug() << "+----- login state: " << perm << " -----+";
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if(perm == 1){
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// permanent login -> restore login
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this->username = pGlobalAppSettings->loadSetting("username");
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this->password = pGlobalAppSettings->loadSetting("password");
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this->setState("loggedIn");
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}
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else {
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this->setState("notLoggedIn");
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}
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this->checkConnTimer = new QTimer();
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this->checkConnTimer->setInterval(1000);
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this->checkConnTimer->setSingleShot(true);
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connect(checkConnTimer, SIGNAL(timeout()), this, SLOT(checkConn()));
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this->checkConnTimer->start();
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}
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int ServerConn::login(QString username, QString password, bool permanent)
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{
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// add the data to the request
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QUrlQuery pdata;
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pdata.addQueryItem("username", username);
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pdata.addQueryItem("password", password);
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// send the request
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ReturnData_t ret = this->senddata(QUrl("http://www.fanny-leicht.de/j34/templates/g5_helium/intern/events.php"), pdata);
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if(ret.status_code == 200){
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// if not 200 was returned -> user data was correct
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// store username and password in the class variables
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this->username = username;
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this->password = password;
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if(permanent){
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// if the user wants to say logged in, store the username and password to the settings file
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pGlobalAppSettings->writeSetting("permanent", "1");
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pGlobalAppSettings->writeSetting("username", username);
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pGlobalAppSettings->writeSetting("password", password);
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}
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// set state to loggedIn
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this->setState("loggedIn");
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qDebug() << "+----- logged in -----+";
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// return success
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return(200);
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}
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else {
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// if not 200 was returned -> error -> return the return code
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this->setState("notLoggedIn");
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return(ret.status_code);
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}
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}
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int ServerConn::logout()
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{
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// reset the data stored in the class
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this->username = "";
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this->password = "";
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// reset the data stored in the settings
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pGlobalAppSettings->writeSetting("permanent", "0");
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pGlobalAppSettings->writeSetting("username", "");
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pGlobalAppSettings->writeSetting("password", "");
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this->setState("notLoggedIn");
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qDebug() << "+----- logout -----+";
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// return success
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return(200);
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}
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int ServerConn::checkConn()
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{
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if(this->state == "notLoggedIn"){
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return(903);
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}
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// add the data to the request
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QUrlQuery pdata;
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pdata.addQueryItem("username", this->username);
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pdata.addQueryItem("password", this->password);
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// send the request
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ReturnData_t ret = this->senddata(QUrl("http://www.fanny-leicht.de/j34/templates/g5_helium/intern/events.php"), pdata);
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if(ret.status_code == 401){
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// if the stats code is 401 -> userdata is incorrect
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authErrorCount ++;
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if(authErrorCount > 3){
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qDebug() << "+----- checkconn: user data is incorrect -----+";
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logout();
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}
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}
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this->checkConnTimer->start();
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return(ret.status_code);
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}
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int ServerConn::getEvents(QString day)
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{
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if(this->state != "loggedIn"){
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return(401);
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}
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// add the data to the request
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QUrlQuery pdata;
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pdata.addQueryItem("username", this->username);
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pdata.addQueryItem("password", this->password);
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pdata.addQueryItem("day", day);
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// send the request
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ReturnData_t ret = this->senddata(QUrl("http://www.fanny-leicht.de/j34/templates/g5_helium/intern/events.php"), pdata);
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if(ret.status_code != 200){
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// if the request didn't result in a success, clear the old events, as they are probaply incorrect and return the error code
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this->m_events.clear();
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return(ret.status_code);
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}
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// get the filers list for later usage
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QList<QStringList> filtersList = pGlobalAppSettings->readFilters();
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// remove all elements from the filters list, that do not match the current mode ( teacher / student ) of the app
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for(int i = 0; i < filtersList.length(); i++){
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QStringList filterList = filtersList[i];
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if( !(pGlobalAppSettings->loadSetting("teacherMode") == "true" ? filterList[2] == "t":filterList[2] == "s") ){
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filtersList.removeAt(i);
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i = i-1;
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}
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}
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// list to be returned
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QList<QStringList> tmpEvents;
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QStringList tmpEventHeader;
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//qDebug() << jsonString;
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QJsonDocument jsonFilters = QJsonDocument::fromJson(ret.text.toUtf8());
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// array with all filters in it
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QJsonObject dataArray = jsonFilters.object();
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// get the version of the json format
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QString version = dataArray.value("version").toString();
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// get the header data
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tmpEventHeader.append(dataArray.value("targetDate").toString());
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tmpEventHeader.append(dataArray.value("stewardingClass").toString());
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// expand the length of the header list to seven to prevent list out of range errors
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while (tmpEventHeader.length() < 7) {
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tmpEventHeader.append("");
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}
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// append the header to the temporyry event list
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tmpEvents.append(tmpEventHeader);
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// get the event data
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QJsonArray eventsArray = dataArray.value("events").toArray();
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for(int i=0; i<eventsArray.count(); i++){
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// get the current event-list out of the array
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QJsonArray eventArray = eventsArray[i].toArray();
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// lst to store the current event
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QStringList tmpEventList;
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// extract values from array
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foreach(const QJsonValue & key, eventArray){
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// and append them to the temporyry list
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tmpEventList.append(key.toString());
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}
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while (tmpEventList.length() < 7) {
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// enshure that the list contains at least seven items (to prevent getting list out of range errors)
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tmpEventList.append("");
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}
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if(filtersList.isEmpty()){
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// if there are no filters append the event immideatly
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tmpEvents.append(tmpEventList);
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}
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else {
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// if there is at least one filter, check if the event matches it
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foreach(QStringList filter, filtersList){
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// go through all filters and check if one of them matches the event
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// always append the first row, as it is the legend
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if((tmpEventList[0].contains(filter[0]) && tmpEventList[0].contains(filter[1])) || i == 0){
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// append the eventList to the temporary event list
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tmpEvents.append(tmpEventList);
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// terminate the loop
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break;
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}
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}
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}
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}
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// check if there is any valid data
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if(tmpEvents.length() < 3){
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// remove the last (in this case the second) element, as it is unnecessary (it is the legend -> not needed when there is no data)
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tmpEvents.takeLast();
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// set return code to 'no data' (901)
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ret.status_code = 901;
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}
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this->m_events = tmpEvents;
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return(ret.status_code);
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}
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int ServerConn::getFoodPlan()
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{
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QUrlQuery pdata;
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ReturnData_t ret = this->senddata(QUrl("http://www.treffpunkt-fanny.de/fuer-schueler-und-lehrer/speiseplan.html"), pdata);
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if(ret.status_code != 200){
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// if the request didn't result in a success, return the error code
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// if the request failed but there is still old data available
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if(!this->m_weekplan.isEmpty()){
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// set the status code to 902 (old data)
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ret.status_code = 902;
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}
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return(ret.status_code);
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}
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// initialize the weekplan to store information to it
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QList<QList<QString>> temp_weekplan;
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// m_weekplan is a list, that contains a list for each day, which contains: cookteam, date, main dish, vagi main dish, garnish(Beilage) and Dessert.
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// read the whole website
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QString returnedData = ret.text;
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// remove unnecessary stuff
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returnedData.replace("\n","");
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returnedData.replace("\r","");
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returnedData.replace("\t","");
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// workaround for changing html syntax
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returnedData.replace("style=\"width: 25%;\"", "width=\"25%\"");
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// split the string at the beginning of the tables
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QStringList documentList = returnedData.split( "<table class=\"speiseplan\">" );
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// enshure that the data is valid
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if(documentList.length() < 2){
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return(900);
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}
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//---------- prepare the table of the first week ----------
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QString table1 = documentList[1];
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// enshure that the data is valid
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if(table1.split( "</table>" ).length() < 1){
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return(900);
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}
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// remove everything after "</table>"
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table1 = table1.split( "</table>" )[0];
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// remove "<tbody><tr style=\"border: 1px solid #999;\" align=\"center\" valign=\"top\">" at the beginning
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table1.remove(0,71);
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//remove "</tr></tbody>" at the end
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table1 = table1.left(table1.length() - 13);
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//split at the days to get a list of all days
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QStringList table1list = table1.split("<td width=\"25%\">");
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// enshure that the data is valid
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if(table1list.length() < 5){
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return(900);
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}
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//remove the first item, as it is empty
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table1list.takeFirst();
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//---------- prepare the table of the second week ----------
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QString table2 = documentList[2];
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// enshure that the data is valid
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if(table2.split( "</table>" ).length() < 1){
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return(900);
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}
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//remove everything after "</table>"
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table2 = table2.split( "</table>" )[0];
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//remove "<tbody><tr align=\"center\" valign=\"top\">" at the beginning
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table2.remove(0,39);
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//remove "</tr></tbody>" at the end
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table2.remove(table2.length() - 13, table2.length());
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//split at the days to get a list of all days
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QStringList table2list = table2.split("<td width=\"25%\">");
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// enshure that the data is valid
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if(table2list.length() < 5){
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return(900);
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}
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//remove the first item, as it is empty
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table2list.takeFirst();
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//---------- put both weeks into one big list ----------
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QStringList weeklist = table1list + table2list;
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//---------- go through all days and split the day-string into the different types of information ----------
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for (int i = 0; i <=7; i ++){
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if(i > weeklist.length()){
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// if the loop exceeds the length of the wweklist some kind of eror occured
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return 900;
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}
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// store item temporarly to edit it
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QString day = weeklist[i];
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// remove "</td>" at the and of the Item
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day = day.left(day.length()-5);
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// table list[i] looks now like: | clould be:
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// <strong>cookteam</strong> | <strong>Red Hot Chili Peppers</strong>
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// <br /> | <br />
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// <strong>date</strong> | <strong>26.06.2018</strong>
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// <hr />mainDish | <hr />Gulasch mit Kartoffeln
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// <hr />mainDishVeg | <hr />Pellkartoffeln mit Quark
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// <hr />garnish | <hr />Gemischter Salat
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// <hr />dessert</td> | <hr />Eaton Mess ( Erdbeer-Nachtisch )</td>
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// split item at strong, to get the cookteam and the date
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QStringList daylist = day.split("<strong>");
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day = "";
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// convert the list to a big string
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for (int i = 0; i <= 2; i ++){
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if(i <= daylist.length()){
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day += daylist[i];
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}
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}
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day.replace("<br />","");
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daylist = day.split("</strong>");
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// store cookteam and date in the temp_weekplan
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//temp_weekplan.append({daylist[0], daylist[1]});
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// store information in day
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// (looks like: "<hr />MainDish<hr />MainDishVeg<hr />Garnish<hr />Dessert")
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// (could be: "<hr />Gulasch mit Kartoffeln<hr />Pellkartoffeln mit Quark<hr />Gemischter Salat<hr />Eaton Mess ( Erdbeer-Nachtisch )")
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day = daylist.takeLast();
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// seperate the information
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daylist.append(day.split("<hr />"));
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// remove the item that is emplty from the list
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daylist.removeAt(2);
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//---------- check if the day is aleady over ----------
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// get the datestring
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QString dateString = daylist[1];
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// convert it to a valid QDate
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QDateTime date = QDateTime::fromString(dateString,"dd.MM.yyyy");
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// get the current date and time
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QDateTime currentDateTime = QDateTime::currentDateTimeUtc();
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// check if the given day is still in the future or today (then it is valid)
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if(date.toTime_t() > currentDateTime.toTime_t() || date.date() == currentDateTime.date()){
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// add the rest of the information to the temp_weekplan
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qDebug() << "day valid:" << daylist;
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//---------- convert the date to a readable string ----------
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QString readableDateString;
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if(date.date() == currentDateTime.date()){
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// the given day is today
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readableDateString = "Heute";
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}
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else if (date.toTime_t() < ( currentDateTime.toTime_t() + ( 24 * 60 * 60 ))) {
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// the given day is tomorrow
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readableDateString = "Morgen";
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}
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else {
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readableDateString = date.toString("dddd, d.M.yy");
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}
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qDebug() << readableDateString;
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// insert the redable tring into the daylist
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daylist[1] = readableDateString;
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// append the day to the weeklist
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temp_weekplan.append({daylist[0], daylist[1], daylist[2], daylist[3], daylist[4], daylist[5]});
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}
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}
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// write data to global foodplan
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this->m_weekplan = temp_weekplan;
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// check if there is any valid data
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if(this->m_weekplan.isEmpty()){
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// no data
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return(901);
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}
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// success
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return(200);
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}
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ReturnData_t ServerConn::senddata(QUrl serviceUrl, QUrlQuery pdata)
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{
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ReturnData_t ret; //this is a custom type to store the return-data
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// Create network request
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QNetworkRequest request(serviceUrl);
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request.setHeader(QNetworkRequest::ContentTypeHeader,
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"application/x-www-form-urlencoded");
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//set ssl configuration
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//send a POST request with the given url and data to the server
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QNetworkReply* reply;
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reply = this->networkManager->post(request, pdata.toString(QUrl::FullyEncoded).toUtf8());
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// loop to wait until the request has finished before processing the data
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QEventLoop loop;
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// timer to cancel the request after 3 seconds
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QTimer timer;
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timer.setSingleShot(true);
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// quit the loop when the request finised
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loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
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// or the timer timed out
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loop.connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
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// start the timer
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timer.start(4000);
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// start the loop
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loop.exec();
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//get the status code
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QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
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ret.status_code = status_code.toInt();
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//get the full text response
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ret.text = QString::fromUtf8(reply->readAll());
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if(reply->isOpen()){
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delete reply;
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}
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//return the data
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return(ret);
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}
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QString ServerConn::getState() {
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return(this->state);
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}
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void ServerConn::setState(QString state) {
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if(state != this->state){
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qDebug() << "+----- serverconn has new state: " + state + " -----+";
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this->state = state;
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this->stateChanged(this->state);
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}
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}
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ServerConn::~ServerConn()
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{
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qDebug("+----- ServerConn destruktor -----+");
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delete this->networkManager;
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delete this->refreshNetworkManager;
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}
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