KItinerary

jsapi/jsonld.cpp
1/*
2 SPDX-FileCopyrightText: 2018 Volker Krause <vkrause@kde.org>
3
4 SPDX-License-Identifier: LGPL-2.0-or-later
5*/
6
7#include "jsonld.h"
8#include "reservationconverter.h"
9
10#include <KItinerary/JsonLdDocument>
11
12#include <QDebug>
13#include <QJSEngine>
14#include <QJsonArray>
15#include <QJsonObject>
16#include <QLocale>
17#include <QMetaProperty>
18#include <QRegularExpression>
19#include <QUrl>
20
21using namespace KItinerary;
22
23JsApi::JsonLd::JsonLd(QJSEngine* engine)
24 : QObject(engine)
25 , m_engine(engine)
26{
27}
28
29JsApi::JsonLd::~JsonLd() = default;
30
31QJSValue JsApi::JsonLd::newObject(const QString &typeName) const
32{
33 auto v = m_engine->newObject();
34 v.setProperty(QStringLiteral("@type"), typeName);
35 return v;
36}
37
38QJSValue JsApi::JsonLd::newPlace(const QString &type) const
39{
40 const auto addr = newObject(QStringLiteral("PostalAddress"));
41 const auto geo = newObject(QStringLiteral("GeoCoordinates"));
42
43 auto p = newObject(type);
44 p.setProperty(QStringLiteral("address"), addr);
45 p.setProperty(QStringLiteral("geo"), geo);
46
47 return p;
48}
49
50QJSValue JsApi::JsonLd::newFlightReservation() const
51{
52 const auto dep = newPlace(QStringLiteral("Airport"));
53 const auto arr = newPlace(QStringLiteral("Airport"));
54 const auto airline = newObject(QStringLiteral("Airline"));
55 const auto person = newObject(QStringLiteral("Person"));
56
57 auto resFor = newObject(QStringLiteral("Flight"));
58 resFor.setProperty(QStringLiteral("departureAirport"), dep);
59 resFor.setProperty(QStringLiteral("arrivalAirport"), arr);
60 resFor.setProperty(QStringLiteral("airline"), airline);
61
62 const auto ticket = newObject(QStringLiteral("Ticket"));
63
64 auto res = newObject(QStringLiteral("FlightReservation"));
65 res.setProperty(QStringLiteral("reservationFor"), resFor);
66 res.setProperty(QStringLiteral("underName"), person);
67 res.setProperty(QStringLiteral("reservedTicket"), ticket);
68
69 return res;
70}
71
72QJSValue JsApi::JsonLd::newTrainReservation() const
73{
74 const auto dep = newPlace(QStringLiteral("TrainStation"));
75 const auto arr = newPlace(QStringLiteral("TrainStation"));
76 const auto person = newObject(QStringLiteral("Person"));
77 const auto seat = newObject(QStringLiteral("Seat"));
78
79 auto ticket = newObject(QStringLiteral("Ticket"));
80 ticket.setProperty(QStringLiteral("ticketedSeat"), seat);
81
82 auto resFor = newObject(QStringLiteral("TrainTrip"));
83 resFor.setProperty(QStringLiteral("departureStation"), dep);
84 resFor.setProperty(QStringLiteral("arrivalStation"), arr);
85 resFor.setProperty(QStringLiteral("provider"), newObject(QStringLiteral("Organization")));
86
87 auto res = newObject(QStringLiteral("TrainReservation"));
88 res.setProperty(QStringLiteral("reservationFor"), resFor);
89 res.setProperty(QStringLiteral("underName"), person);
90 res.setProperty(QStringLiteral("reservedTicket"), ticket);
91 res.setProperty(QStringLiteral("programMembershipUsed"), newObject(QStringLiteral("ProgramMembership")));
92
93 return res;
94}
95
96QJSValue JsApi::JsonLd::newBusReservation() const
97{
98 const auto dep = newPlace(QStringLiteral("BusStation"));
99 const auto arr = newPlace(QStringLiteral("BusStation"));
100 const auto person = newObject(QStringLiteral("Person"));
101 const auto seat = newObject(QStringLiteral("Seat"));
102
103 auto ticket = newObject(QStringLiteral("Ticket"));
104 ticket.setProperty(QStringLiteral("ticketedSeat"), seat);
105
106 auto resFor = newObject(QStringLiteral("BusTrip"));
107 resFor.setProperty(QStringLiteral("departureBusStop"), dep);
108 resFor.setProperty(QStringLiteral("arrivalBusStop"), arr);
109 resFor.setProperty(QStringLiteral("provider"), newObject(QStringLiteral("Organization")));
110
111 auto res = newObject(QStringLiteral("BusReservation"));
112 res.setProperty(QStringLiteral("reservationFor"), resFor);
113 res.setProperty(QStringLiteral("underName"), person);
114 res.setProperty(QStringLiteral("reservedTicket"), ticket);
115
116 return res;
117}
118
119QJSValue JsApi::JsonLd::newLodgingReservation() const
120{
121 const auto person = newObject(QStringLiteral("Person"));
122 const auto resFor = newPlace(QStringLiteral("LodgingBusiness"));
123
124 auto res = newObject(QStringLiteral("LodgingReservation"));
125 res.setProperty(QStringLiteral("reservationFor"), resFor);
126 res.setProperty(QStringLiteral("underName"), person);
127
128 return res;
129}
130
131QJSValue JsApi::JsonLd::newEventReservation() const
132{
133 auto resFor = newObject(QStringLiteral("Event"));
134 resFor.setProperty(QStringLiteral("location"), newPlace(QStringLiteral("Place")));
135
136 auto res = newObject(QStringLiteral("EventReservation"));
137 res.setProperty(QStringLiteral("reservationFor"), resFor);
138
139 auto ticket = newObject(QStringLiteral("Ticket"));
140 ticket.setProperty(QStringLiteral("ticketedSeat"), newObject(QStringLiteral("Seat")));
141 res.setProperty(QStringLiteral("reservedTicket"), ticket);
142
143 const auto person = newObject(QStringLiteral("Person"));
144 res.setProperty(QStringLiteral("underName"), person);
145
146 return res;
147}
148
149QJSValue JsApi::JsonLd::newFoodEstablishmentReservation() const
150{
151 const auto person = newObject(QStringLiteral("Person"));
152 const auto resFor = newPlace(QStringLiteral("FoodEstablishment"));
153
154 auto res = newObject(QStringLiteral("FoodEstablishmentReservation"));
155 res.setProperty(QStringLiteral("reservationFor"), resFor);
156 res.setProperty(QStringLiteral("underName"), person);
157
158 return res;
159}
160
161QJSValue JsApi::JsonLd::newRentalCarReservation() const
162{
163 const auto pickup = newPlace(QStringLiteral("Place"));
164 const auto dropoff = newPlace(QStringLiteral("Place"));
165 const auto person = newObject(QStringLiteral("Person"));
166 const auto org = newObject(QStringLiteral("Organization"));
167
168 auto resFor = newObject(QStringLiteral("RentalCar"));
169 resFor.setProperty(QStringLiteral("rentalCompany"), org);
170
171 auto res = newObject(QStringLiteral("RentalCarReservation"));
172 res.setProperty(QStringLiteral("reservationFor"), resFor);
173 res.setProperty(QStringLiteral("pickupLocation"), pickup);
174 res.setProperty(QStringLiteral("dropoffLocation"), dropoff);
175 res.setProperty(QStringLiteral("underName"), person);
176
177 return res;
178}
179
180QJSValue JsApi::JsonLd::newBoatReservation() const
181{
182 const auto dep = newPlace(QStringLiteral("BoatTerminal"));
183 const auto arr = newPlace(QStringLiteral("BoatTerminal"));
184 const auto person = newObject(QStringLiteral("Person"));
185 const auto ticket = newObject(QStringLiteral("Ticket"));
186
187 auto resFor = newObject(QStringLiteral("BoatTrip"));
188 resFor.setProperty(QStringLiteral("departureBoatTerminal"), dep);
189 resFor.setProperty(QStringLiteral("arrivalBoatTerminal"), arr);
190
191 auto res = newObject(QStringLiteral("BoatReservation"));
192 res.setProperty(QStringLiteral("reservationFor"), resFor);
193 res.setProperty(QStringLiteral("underName"), person);
194 res.setProperty(QStringLiteral("reservedTicket"), ticket);
195
196 return res;
197}
198
199QJSValue JsApi::JsonLd::trainToBusReservation(const QJSValue &trainRes) const
200{
201 return m_engine->toScriptValue(ReservationConverter::trainToBus(QJsonValue::fromVariant(trainRes.toVariant()).toObject()));
202}
203
204QJSValue JsApi::JsonLd::busToTrainReservation(const QJSValue &busRes) const
205{
206 return m_engine->toScriptValue(ReservationConverter::busToTrain(QJsonValue::fromVariant(busRes.toVariant()).toObject()));
207}
208
209QDateTime JsApi::JsonLd::toDateTime(const QString &dtStr, const QString &format, const QString &localeName) const
210{
211 QLocale locale(localeName);
212 auto dt = locale.toDateTime(dtStr, format);
213
214 // try harder for the "MMM" month format
215 // QLocale expects the exact string in QLocale::shortMonthName(), while we often encounter a three
216 // letter month identifier. For en_US that's the same, for Swedish it isn't though for example. So
217 // let's try to fix up the month identifiers to the full short name.
218 if (!dt.isValid() && format.contains(QLatin1StringView("MMM"))) {
219 auto dtStrFixed = dtStr;
220 for (int i = 1; i <= 12; ++i) {
221 const auto monthName = locale.monthName(i, QLocale::ShortFormat);
222 dtStrFixed.replace(monthName.left(3), monthName, Qt::CaseInsensitive);
223 }
224 dt = locale.toDateTime(dtStrFixed, format);
225 }
226
227 // try even harder for "MMM" month format
228 // in the de_DE locale we encounter sometimes almost arbitrary abbreviations for month
229 // names (eg. Mrz, Mär for März). So try to identify those and replace them with what QLocale
230 // expects
231 if (!dt.isValid() && format.contains(QLatin1StringView("MMM"))) {
232 auto dtStrFixed = dtStr;
233 for (int i = 1; i <= 12; ++i) {
234 const auto monthName = locale.monthName(i, QLocale::LongFormat);
235 const auto beginIdx = dtStr.indexOf(monthName.at(0));
236 if (beginIdx < 0) {
237 continue;
238 }
239 auto endIdx = beginIdx;
240 for (auto nameIdx = 0;
241 endIdx < dtStr.size() && nameIdx < monthName.size(); ++nameIdx) {
242 if (dtStr.at(endIdx).toCaseFolded() ==
243 monthName.at(nameIdx).toCaseFolded()) {
244 ++endIdx;
245 }
246 }
247 if (endIdx - beginIdx >= 3) {
248 dtStrFixed.replace(beginIdx, endIdx - beginIdx,
249 locale.monthName(i, QLocale::ShortFormat));
250 break;
251 }
252 }
253 dt = locale.toDateTime(dtStrFixed, format);
254 }
255
256 if (!dt.isValid()) {
257 return dt;
258 }
259
260 const bool hasFullYear = format.contains(QLatin1StringView("yyyy"));
261 const bool hasYear =
262 hasFullYear || format.contains(QLatin1StringView("yy"));
263 const bool hasMonth = format.contains(QLatin1Char('M'));
264 const bool hasDay = format.contains(QLatin1Char('d'));
265
266 // time only, set a default date
267 if (!hasDay && !hasMonth && !hasYear) {
268 dt.setDate({1970, 1, 1});
269 }
270
271 // if the date does not contain a year number, determine that based on the context date, if set
272 else if (!hasYear && m_contextDate.isValid()) {
273 dt.setDate({m_contextDate.date().year(), dt.date().month(), dt.date().day()});
274 // go one day back to leave a bit of room for documents produced very close to
275 // or even during the trip
276 if (dt < m_contextDate.addDays(-1)) {
277 dt = dt.addYears(1);
278 }
279 }
280
281 // fix two-digit years ending up in the wrong century
282 else if (!hasFullYear && dt.date().year() / 100 == 19) {
283 // be careful to only change the date, QDateTime::addYears can change
284 // the time as well if e.g. DST has been changed in the corresponding timezone
285 dt.setDate(dt.date().addYears(100));
286 }
287
288 return dt;
289}
290
291QDateTime JsApi::JsonLd::toDateTime(const QString &dtStr, const QJSValue &format, const QJSValue &localeName) const
292{
293 if (localeName.isString() && format.isString()) {
294 return toDateTime(dtStr, format.toString(), localeName.toString());
295 }
296 if (format.isArray()) {
297 const auto count = format.property(QLatin1StringView("length")).toInt();
298 for (auto i = 0; i < count; ++i) {
299 const auto dt = toDateTime(dtStr, format.property(i), localeName);
300 if (dt.isValid()) {
301 return dt;
302 }
303 }
304 }
305 if (format.isString() && localeName.isArray()) {
306 const auto count =
307 localeName.property(QLatin1StringView("length")).toInt();
308 for (auto i = 0; i < count; ++i) {
309 const auto dt = toDateTime(dtStr, format.toString(),
310 localeName.property(i).toString());
311 if (dt.isValid()) {
312 return dt;
313 }
314 }
315 }
316 return {};
317}
318
319QJSValue JsApi::JsonLd::toJson(const QVariant &v) const
320{
321 if (v.canConvert<QList<QVariant>>()) {
322 return m_engine->toScriptValue(
323 JsonLdDocument::toJson(v.value<QList<QVariant>>()));
324 }
325
326 const auto json = JsonLdDocument::toJsonValue(v);
327 return m_engine->toScriptValue(json);
328}
329
330QJSValue JsApi::JsonLd::clone(const QJSValue& v) const
331{
332 return m_engine->toScriptValue(v.toVariant());
333}
334
335QJSValue JsApi::JsonLd::toGeoCoordinates(const QString &mapUrl)
336{
337 QUrl url(mapUrl);
338 if (url.host().contains(QLatin1StringView("google"))) {
339 QRegularExpression regExp(
340 QStringLiteral("[/=@](-?\\d+\\.\\d+),(-?\\d+\\.\\d+)"));
341 auto match = regExp.match(url.path());
342 if (!match.hasMatch()) {
343 match = regExp.match(url.query());
344 }
345
346 if (match.hasMatch()) {
347 auto geo = m_engine->newObject();
348 geo.setProperty(QStringLiteral("@type"),
349 QStringLiteral("GeoCoordinates"));
350 geo.setProperty(QStringLiteral("latitude"),
351 match.capturedView(1).toDouble());
352 geo.setProperty(QStringLiteral("longitude"),
353 match.capturedView(2).toDouble());
354 return geo;
355 }
356 }
357
358 return {};
359}
360
361QJSValue JsApi::JsonLd::readQDateTime(const QVariant &obj, const QString &propName) const
362{
363 const auto mo = QMetaType(obj.userType()).metaObject();
364 if (!mo) {
365 return {};
366 }
367 const auto propIdx = mo->indexOfProperty(propName.toUtf8().constData());
368 if (propIdx < 0) {
369 qWarning() << "Unknown property name:" << mo->className() << propName;
370 return {};
371 }
372 const auto prop = mo->property(propIdx);
373 const auto dt = prop.readOnGadget(obj.constData());
374 return toJson(dt);
375}
376
377QJSValue JsApi::JsonLd::apply(const QJSValue &lhs, const QJSValue &rhs) const
378{
379 const auto lhsVar = JsonLdDocument::fromJsonSingular(QJsonValue::fromVariant(lhs.toVariant()).toObject());
380 const auto rhsVar = JsonLdDocument::fromJsonSingular(QJsonValue::fromVariant(rhs.toVariant()).toObject());
381 const auto v = JsonLdDocument::apply(lhsVar, rhsVar);
382 return toJson(v);
383}
384
385void JsApi::JsonLd::setContextDate(const QDateTime& dt)
386{
387 m_contextDate = dt;
388}
389
390#include "moc_jsonld.cpp"
KItinerary::JsApi::JsonLd::newEventReservation
Q_INVOKABLE QJSValue newEventReservation() const
Convenience method that generates a full EventReservation JS object.
Definition jsapi/jsonld.cpp:131
KItinerary::JsApi::JsonLd::toGeoCoordinates
Q_INVOKABLE QJSValue toGeoCoordinates(const QString &mapUrl)
Parses geo coordinates from a given mapping service URLs.
Definition jsapi/jsonld.cpp:335
KItinerary::JsApi::JsonLd::newLodgingReservation
Q_INVOKABLE QJSValue newLodgingReservation() const
Convenience method that generates a full LodgingReservation JS object.
Definition jsapi/jsonld.cpp:119
KItinerary::JsApi::JsonLd::newBusReservation
Q_INVOKABLE QJSValue newBusReservation() const
Convenience method that generates a full BusReservation JS object.
Definition jsapi/jsonld.cpp:96
KItinerary::JsApi::JsonLd::busToTrainReservation
Q_INVOKABLE QJSValue busToTrainReservation(const QJSValue &busRes) const
Convert a bus reservation to a train reservation.
Definition jsapi/jsonld.cpp:204
KItinerary::JsApi::JsonLd::newObject
Q_INVOKABLE QJSValue newObject(const QString &typeName) const
Create a new JSON-LD object of type typeName.
Definition jsapi/jsonld.cpp:31
KItinerary::JsApi::JsonLd::apply
Q_INVOKABLE QJSValue apply(const QJSValue &lhs, const QJSValue &rhs) const
Definition jsapi/jsonld.cpp:377
KItinerary::JsApi::JsonLd::clone
Q_INVOKABLE QJSValue clone(const QJSValue &v) const
Clones the given JS object.
Definition jsapi/jsonld.cpp:330
KItinerary::JsApi::JsonLd::toJson
Q_INVOKABLE QJSValue toJson(const QVariant &v) const
Convert object v to a JSON-LD object.
Definition jsapi/jsonld.cpp:319
KItinerary::JsApi::JsonLd::newRentalCarReservation
Q_INVOKABLE QJSValue newRentalCarReservation() const
Convenience method that generates a full RentalCarReservation JS object.
Definition jsapi/jsonld.cpp:161
KItinerary::JsApi::JsonLd::toDateTime
Q_INVOKABLE QDateTime toDateTime(const QString &dtStr, const QJSValue &format, const QJSValue &localeName) const
Convert a date/time string to a date/time value.
Definition jsapi/jsonld.cpp:291
KItinerary::JsApi::JsonLd::readQDateTime
Q_INVOKABLE QJSValue readQDateTime(const QVariant &obj, const QString &propName) const
Read a QDateTime property and return a JSON-LD serialization of it.
Definition jsapi/jsonld.cpp:361
KItinerary::JsApi::JsonLd::newFoodEstablishmentReservation
Q_INVOKABLE QJSValue newFoodEstablishmentReservation() const
Convenience method that generates a full FoodEstablishmentReservation JS object.
Definition jsapi/jsonld.cpp:149
KItinerary::JsApi::JsonLd::newTrainReservation
Q_INVOKABLE QJSValue newTrainReservation() const
Convenience method that generates a full TrainReservation JS object.
Definition jsapi/jsonld.cpp:72
KItinerary::JsApi::JsonLd::newFlightReservation
Q_INVOKABLE QJSValue newFlightReservation() const
Convenience method that generates a full FlightReservation JS object.
Definition jsapi/jsonld.cpp:50
KItinerary::JsApi::JsonLd::newBoatReservation
Q_INVOKABLE QJSValue newBoatReservation() const
Convenience method that generates a full BoatReservation JS object.
Definition jsapi/jsonld.cpp:180
KItinerary::JsApi::JsonLd::trainToBusReservation
Q_INVOKABLE QJSValue trainToBusReservation(const QJSValue &trainRes) const
Convert a train reservation to a bus reservation.
Definition jsapi/jsonld.cpp:199
KItinerary::JsonLdDocument::toJsonValue
static QJsonValue toJsonValue(const QVariant &data)
JSON-LD serrialization of an invidividual data value.
Definition jsonlddocument.cpp:405
KItinerary::JsonLdDocument::apply
static QVariant apply(const QVariant &lhs, const QVariant &rhs)
Apply all properties of rhs on to lhs.
Definition jsonlddocument.cpp:564
KItinerary::JsonLdDocument::toJson
static QJsonArray toJson(const QList< QVariant > &data)
Serialize instantiated data types to JSON-LD.
Definition jsonlddocument.cpp:497
KItinerary::JsonLdDocument::fromJsonSingular
static QVariant fromJsonSingular(const QJsonObject &obj)
Convert a single JSON-LD object into an instantiated data type.
Definition jsonlddocument.cpp:361
KItinerary::ReservationConverter::trainToBus
QJsonObject trainToBus(const QJsonObject &trainRes)
Convert a train reservation to a bus reservation.
Definition reservationconverter.cpp:27
KItinerary::ReservationConverter::busToTrain
QJsonObject busToTrain(const QJsonObject &busRes)
Convert a bus reservation to a train reservation.
Definition reservationconverter.cpp:52
KItinerary
Classes for reservation/travel data models, data extraction and data augmentation.
Definition berelement.h:17
QByteArray::constData
const char * constData() const const
QChar::toCaseFolded
char32_t toCaseFolded(char32_t ucs4)
QJSEngine::newObject
QJSValue newObject()
QJsonValue::fromVariant
QJsonValue fromVariant(const QVariant &variant)
QJsonValue::toObject
QJsonObject toObject() const const
QJSValue::isArray
bool isArray() const const
QJSValue::isString
bool isString() const const
QJSValue::property
QJSValue property(const QString &name) const const
QJSValue::setProperty
void setProperty(const QString &name, const QJSValue &value)
QJSValue::toInt
qint32 toInt() const const
QJSValue::toString
QString toString() const const
QJSValue::toVariant
QVariant toVariant() const const
QMetaObject::indexOfProperty
int indexOfProperty(const char *name) const const
QMetaType::metaObject
const QMetaObject * metaObject() const const
QRegularExpression::match
QRegularExpressionMatch match(QStringView subjectView, qsizetype offset, MatchType matchType, MatchOptions matchOptions) const const
QString::at
const QChar at(qsizetype position) const const
QString::contains
bool contains(QChar ch, Qt::CaseSensitivity cs) const const
QString::indexOf
qsizetype indexOf(QChar ch, qsizetype from, Qt::CaseSensitivity cs) const const
QString::size
qsizetype size() const const
QString::toUtf8
QByteArray toUtf8() const const
Qt::CaseInsensitive
CaseInsensitive
QUrl::host
QString host(ComponentFormattingOptions options) const const
QUrl::path
QString path(ComponentFormattingOptions options) const const
QUrl::query
QString query(ComponentFormattingOptions options) const const
QVariant::canConvert
bool canConvert() const const
QVariant::constData
const void * constData() const const
QVariant::userType
int userType() const const
QVariant::value
T value() const const
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