File indexing completed on 2024-05-12 16:45:58

 /***************************************************************************
     Copyright (C) 2009 Robby Stephenson <robby@periapsis.org>
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *   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 2 of        *
  *   the License or (at your option) version 3 or any later version        *
  *   accepted by the membership of KDE e.V. (or its successor approved     *
  *   by the membership of KDE e.V.), which shall act as a proxy            *
  *   defined in Section 14 of version 3 of the license.                    *
  *                                                                         *
  *   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 "openlibraryfetcher.h"
 #include "../collections/bookcollection.h"
 #include "../images/imagefactory.h"
 #include "../utils/isbnvalidator.h"
 #include "../utils/guiproxy.h"
 #include "../utils/string_utils.h"
 #include "../entry.h"
 #include "../core/filehandler.h"
 #include "../tellico_debug.h"
 
 #include <KLocalizedString>
 #include <KIO/Job>
 #include <KJobUiDelegate>
 #include <KJobWidgets/KJobWidgets>
 
 #include <QLabel>
 #include <QFile>
 #include <QTextStream>
 #include <QGridLayout>
 #include <QTextCodec>
 #include <QJsonDocument>
 #include <QJsonObject>
 #include <QJsonArray>
 #include <QUrlQuery>
 
 namespace {
   static const char* OPENLIBRARY_QUERY_URL = "http://openlibrary.org/query.json";
 }
 
 using namespace Tellico;
 using Tellico::Fetch::OpenLibraryFetcher;
 
 OpenLibraryFetcher::OpenLibraryFetcher(QObject* parent_)
     : Fetcher(parent_), m_started(false) {
 }
 
 OpenLibraryFetcher::~OpenLibraryFetcher() {
 }
 
 QString OpenLibraryFetcher::source() const {
   return m_name.isEmpty() ? defaultName() : m_name;
 }
 
 bool OpenLibraryFetcher::canSearch(Fetch::FetchKey k) const {
   return k == Title || k == Person || k == ISBN || k == LCCN || k == Keyword;
 }
 
 bool OpenLibraryFetcher::canFetch(int type) const {
   return type == Data::Collection::Book || type == Data::Collection::Bibtex;
 }
 
 void OpenLibraryFetcher::readConfigHook(const KConfigGroup&) {
 }
 
 void OpenLibraryFetcher::search() {
   m_started = true;
   // we only split ISBN and LCCN values
   QStringList searchTerms;
   if(request().key() == ISBN || request().key() == LCCN) {
     searchTerms = FieldFormat::splitValue(request().value());
   } else  {
     searchTerms += request().value();
   }
   foreach(const QString& searchTerm, searchTerms) {
     doSearch(searchTerm);
   }
   if(m_jobs.isEmpty()) {
     stop();
   }
 }
 
 void OpenLibraryFetcher::doSearch(const QString& term_) {
   QUrl u(QString::fromLatin1(OPENLIBRARY_QUERY_URL));
   QUrlQuery q;
   // books are type/edition
   q.addQueryItem(QStringLiteral("type"), QStringLiteral("/type/edition"));
 
   switch(request().key()) {
     case Title:
       q.addQueryItem(QStringLiteral("title"), term_);
       break;
 
     case Person:
       {
         const QString author = getAuthorKeys(term_);
         if(author.isEmpty()) {
           myWarning() << "no authors found";
           return;
         }
         q.addQueryItem(QStringLiteral("authors"), author);
       }
       break;
 
     case ISBN:
       {
         const QString isbn = ISBNValidator::cleanValue(term_);
         if(isbn.size() > 10) {
           q.addQueryItem(QStringLiteral("isbn_13"), isbn);
         } else {
           q.addQueryItem(QStringLiteral("isbn_10"), isbn);
         }
       }
       break;
 
     case LCCN:
       q.addQueryItem(QStringLiteral("lccn"), term_);
       break;
 
     case Raw:
       {
         // raw query comes in as a query string, combine it
         QUrlQuery newQuery(term_);
         foreach(auto item, newQuery.queryItems()) {
           q.addQueryItem(item.first, item.second);
         }
       }
       break;
 
     case Keyword:
       myWarning() << "not supported";
       return;
 
     default:
       myWarning() << "key not recognized:" << request().key();
       return;
   }
   q.addQueryItem(QStringLiteral("*"), QString());
   u.setQuery(q);
 //  myDebug() << "url:" << u;
 
   QPointer<KIO::StoredTransferJob> job = KIO::storedGet(u, KIO::NoReload, KIO::HideProgressInfo);
   KJobWidgets::setWindow(job, GUI::Proxy::widget());
   connect(job.data(), &KJob::result, this, &OpenLibraryFetcher::slotComplete);
   m_jobs << job;
 }
 
 void OpenLibraryFetcher::endJob(KIO::StoredTransferJob* job_) {
   m_jobs.removeAll(job_);
   if(m_jobs.isEmpty())  {
     stop();
   }
 }
 
 void OpenLibraryFetcher::stop() {
   if(!m_started) {
     return;
   }
   foreach(QPointer<KIO::StoredTransferJob> job, m_jobs) {
     if(job) {
       job->kill();
     }
   }
   m_jobs.clear();
   m_started = false;
   emit signalDone(this);
 }
 
 Tellico::Data::EntryPtr OpenLibraryFetcher::fetchEntryHook(uint uid_) {
   Data::EntryPtr entry = m_entries.value(uid_);
   if(!entry) {
     myWarning() << "no entry in dict";
     return Data::EntryPtr();
   }
 
   // if the entry is not set, go ahead and try to fetch it
   if(entry->field(QStringLiteral("cover")).isEmpty()) {
     const QString isbn = ISBNValidator::cleanValue(entry->field(QStringLiteral("isbn")));
     if(!isbn.isEmpty()) {
       QUrl imageUrl(QStringLiteral("http://covers.openlibrary.org/b/isbn/%1-M.jpg?default=false").arg(isbn));
       const QString id = ImageFactory::addImage(imageUrl, true);
       if(!id.isEmpty()) {
         entry->setField(QStringLiteral("cover"), id);
       }
     }
   }
 
   return entry;
 }
 
 Tellico::Fetch::FetchRequest OpenLibraryFetcher::updateRequest(Data::EntryPtr entry_) {
   const QString isbn = entry_->field(QStringLiteral("isbn"));
   if(!isbn.isEmpty()) {
     return FetchRequest(ISBN, isbn);
   }
   const QString lccn = entry_->field(QStringLiteral("lccn"));
   if(!lccn.isEmpty()) {
     return FetchRequest(LCCN, lccn);
   }
   const QString title = entry_->field(QStringLiteral("title"));
   if(title.isEmpty()) {
     return FetchRequest();
   }
 
   // can't search by authors, for now, since the author value is a key reference
   // can't search by pub year since many of the publish_date fields are a full month, day, year
 
   const QString pub = entry_->field(QStringLiteral("publisher"));
   auto publishers = FieldFormat::splitValue(pub);
   if(!publishers.isEmpty()) {
     QUrlQuery q;
     q.addQueryItem(QStringLiteral("title"), title);
     q.addQueryItem(QStringLiteral("publishers"), publishers.first());
     return FetchRequest(Raw, q.query());
   }
 
   // fallback to just title search
   return FetchRequest(Title, title);
 }
 
 void OpenLibraryFetcher::slotComplete(KJob* job_) {
   KIO::StoredTransferJob* job = static_cast<KIO::StoredTransferJob*>(job_);
 
   if(job->error()) {
     job->uiDelegate()->showErrorMessage();
     endJob(job);
     return;
   }
 
   QByteArray data = job->data();
   if(data.isEmpty()) {
     myDebug() << "no data";
     endJob(job);
     return;
   }
 
 #if 0
   myWarning() << "Remove debug from openlibraryfetcher.cpp";
   QFile f(QString::fromLatin1("/tmp/test.json"));
   if(f.open(QIODevice::WriteOnly)) {
     QTextStream t(&f);
     t.setCodec("UTF-8");
     t << data;
   }
   f.close();
 #endif
 
   QJsonDocument doc = QJsonDocument::fromJson(data);
   QJsonArray array = doc.array();
   if(array.isEmpty()) {
 //    myDebug() << "no results";
     endJob(job);
     return;
   }
 
   Data::CollPtr coll(new Data::BookCollection(true));
   if(!coll->hasField(QStringLiteral("openlibrary")) && optionalFields().contains(QStringLiteral("openlibrary"))) {
     Data::FieldPtr field(new Data::Field(QStringLiteral("openlibrary"), i18n("OpenLibrary Link"), Data::Field::URL));
     field->setCategory(i18n("General"));
     coll->addField(field);
   }
 
   for(int i = 0; i < array.count(); i++) {
     // be sure to check that the fetcher has not been stopped
     // crashes can occur if not
     if(!m_started) {
       break;
     }
 //    myDebug() << "found result:" << result;
     QVariantMap resultMap = array.at(i).toObject().toVariantMap();
 
 //  myDebug() << resultMap.value(QLatin1String("isbn_10")).toList().at(0);
 
     Data::EntryPtr entry(new Data::Entry(coll));
 
     entry->setField(QStringLiteral("title"), mapValue(resultMap, "title"));
     entry->setField(QStringLiteral("subtitle"), mapValue(resultMap, "subtitle"));
     QRegularExpression yearRx(QStringLiteral("\\d{4}"));
     QRegularExpressionMatch yearMatch = yearRx.match(mapValue(resultMap, "publish_date"));
     if(yearMatch.hasMatch()) {
       entry->setField(QStringLiteral("pub_year"), yearMatch.captured());
     }
     QString isbn = mapValue(resultMap, "isbn_10");
     if(isbn.isEmpty()) {
       isbn = mapValue(resultMap, "isbn_13");
     }
     if(!isbn.isEmpty()) {
       ISBNValidator val(this);
       val.fixup(isbn);
       entry->setField(QStringLiteral("isbn"), isbn);
     }
     entry->setField(QStringLiteral("lccn"), mapValue(resultMap, "lccn"));
     entry->setField(QStringLiteral("genre"), mapValue(resultMap, "genres"));
     entry->setField(QStringLiteral("keyword"), mapValue(resultMap, "subjects"));
     entry->setField(QStringLiteral("edition"), mapValue(resultMap, "edition_name"));
     QString binding = mapValue(resultMap, "physical_format");
     if(binding.toLower() == QLatin1String("hardcover")) {
       binding = QStringLiteral("Hardback");
     } else if(binding.contains(QStringLiteral("paperback"), Qt::CaseInsensitive)) {
       binding = QStringLiteral("Paperback");
     }
     if(!binding.isEmpty()) {
       entry->setField(QStringLiteral("binding"), i18n(binding.toUtf8().constData()));
     }
     entry->setField(QStringLiteral("publisher"), mapValue(resultMap, "publishers"));
     entry->setField(QStringLiteral("series"), mapValue(resultMap, "series"));
     entry->setField(QStringLiteral("pages"), mapValue(resultMap, "number_of_pages"));
     entry->setField(QStringLiteral("comments"), mapValue(resultMap, "notes"));
 
     if(optionalFields().contains(QStringLiteral("openlibrary"))) {
       entry->setField(QStringLiteral("openlibrary"), QLatin1String("https://openlibrary.org") + mapValue(resultMap, "key"));
     }
 
     QStringList authors;
     foreach(const QVariant& authorMap, resultMap.value(QLatin1String("authors")).toList()) {
       const QString key = mapValue(authorMap.toMap(), "key");
       if(!key.isEmpty()) {
         QUrl authorUrl(QString::fromLatin1(OPENLIBRARY_QUERY_URL));
         QUrlQuery q;
         q.addQueryItem(QStringLiteral("type"), QStringLiteral("/type/author"));
         q.addQueryItem(QStringLiteral("key"), key);
         q.addQueryItem(QStringLiteral("name"), QString());
         authorUrl.setQuery(q);
 
         QString output = FileHandler::readTextFile(authorUrl, true /*quiet*/);
         QJsonDocument doc = QJsonDocument::fromJson(output.toUtf8());
         QJsonArray array = doc.array();
         QVariantMap authorResult = array.isEmpty() ? QVariantMap() : array.at(0).toObject().toVariantMap();
         const QString name = mapValue(authorResult, "name");
         if(!name.isEmpty()) {
           authors << name;
         }
       }
     }
     if(!authors.isEmpty()) {
       entry->setField(QStringLiteral("author"), authors.join(FieldFormat::delimiterString()));
     }
 
     QStringList langs;
     foreach(const QVariant& langMap, resultMap.value(QLatin1String("languages")).toList()) {
       const QString key = mapValue(langMap.toMap(), "key");
       if(!key.isEmpty()) {
         QUrl langUrl(QString::fromLatin1(OPENLIBRARY_QUERY_URL));
         QUrlQuery q;
         q.addQueryItem(QStringLiteral("type"), QStringLiteral("/type/language"));
         q.addQueryItem(QStringLiteral("key"), key);
         q.addQueryItem(QStringLiteral("name"), QString());
         langUrl.setQuery(q);
 
         QString output = FileHandler::readTextFile(langUrl, true /*quiet*/, true /*utf8*/);
         QJsonDocument doc = QJsonDocument::fromJson(output.toUtf8());
         QJsonArray array = doc.array();
         QVariantMap langResult = array.isEmpty() ? QVariantMap() : array.at(0).toObject().toVariantMap();
         const QString name = mapValue(langResult, "name");
         if(!name.isEmpty()) {
           langs << i18n(name.toUtf8().constData());
         }
       }
     }
     if(!langs.isEmpty()) {
       entry->setField(QStringLiteral("language"), langs.join(FieldFormat::delimiterString()));
     }
 
     FetchResult* r = new FetchResult(this, entry);
     m_entries.insert(r->uid, entry);
     emit signalResultFound(r);
   }
 
 //  m_start = m_entries.count();
 //  m_hasMoreResults = m_start <= m_total;
   m_hasMoreResults = false; // for now, no continued searches
   endJob(job);
 }
 
 QString OpenLibraryFetcher::getAuthorKeys(const QString& term_) {
   QUrl u(QString::fromLatin1(OPENLIBRARY_QUERY_URL));
   QUrlQuery q;
   q.addQueryItem(QStringLiteral("type"), QStringLiteral("/type/author"));
   q.addQueryItem(QStringLiteral("name"), term_);
   u.setQuery(q);
 
   QString output = FileHandler::readTextFile(u, true /*quiet*/, true /*utf8*/);
   QJsonDocument doc = QJsonDocument::fromJson(output.toUtf8());
   QJsonArray array = doc.array();
 //  myDebug() << "found" << array.count() << "authors";
   // right now, only use the first
   return array.isEmpty() ? QString() : mapValue(array.at(0).toObject().toVariantMap(), "key");
 }
 
 Tellico::Fetch::ConfigWidget* OpenLibraryFetcher::configWidget(QWidget* parent_) const {
   return new OpenLibraryFetcher::ConfigWidget(parent_, this);
 }
 
 QString OpenLibraryFetcher::defaultName() {
   return QStringLiteral("Open Library"); // no translation
 }
 
 QString OpenLibraryFetcher::defaultIcon() {
   return favIcon("http://openlibrary.org");
 }
 
 Tellico::StringHash OpenLibraryFetcher::allOptionalFields() {
   StringHash hash;
   hash[QStringLiteral("openlibrary")] = i18n("OpenLibrary Link");
   return hash;
 }
 
 OpenLibraryFetcher::ConfigWidget::ConfigWidget(QWidget* parent_, const OpenLibraryFetcher* fetcher_)
     : Fetch::ConfigWidget(parent_) {
   QVBoxLayout* l = new QVBoxLayout(optionsWidget());
   l->addWidget(new QLabel(i18n("This source has no options."), optionsWidget()));
   l->addStretch();
 
   // now add additional fields widget
   addFieldsWidget(OpenLibraryFetcher::allOptionalFields(), fetcher_ ? fetcher_->optionalFields() : QStringList());
 }
 
 void OpenLibraryFetcher::ConfigWidget::saveConfigHook(KConfigGroup&) {
 }
 
 QString OpenLibraryFetcher::ConfigWidget::preferredName() const {
   return OpenLibraryFetcher::defaultName();
 }