117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2021 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "metaengine.h"
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#include "wikipediaengine.h"
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#include "lastfmengine.h"
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#include <QDebug>
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static bool debugEnabled=false;
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#define DBUG if (debugEnabled) qWarning() << metaObject()->className() << __FUNCTION__
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void MetaEngine::enableDebug()
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{
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debugEnabled=true;
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}
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static const QLatin1String constBlankResp("-");
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MetaEngine::MetaEngine(QObject *p)
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: ContextEngine(p)
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{
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wiki=new WikipediaEngine(this);
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lastfm=new LastFmEngine(this);
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connect(wiki, SIGNAL(searchResult(QString,QString)), SLOT(wikiResponse(QString,QString)));
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connect(lastfm, SIGNAL(searchResult(QString,QString)), SLOT(lastFmResponse(QString,QString)));
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}
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QStringList MetaEngine::getLangs() const
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{
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QStringList langs=wiki->getLangs();
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langs.append(LastFmEngine::constLang);
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return langs;
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}
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QString MetaEngine::getPrefix(const QString &key) const
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{
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return key==LastFmEngine::constLang ? LastFmEngine::constLang : wiki->getPrefix(key);
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}
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QString MetaEngine::translateLinks(QString text) const
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{
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return lastfm->translateLinks(wiki->translateLinks(text));
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}
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void MetaEngine::search(const QStringList &query, Mode mode)
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{
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DBUG << query << (int)mode;
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responses.clear();
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wiki->cancel();
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lastfm->cancel();
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wiki->search(query, mode);
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lastfm->search(query, mode);
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}
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void MetaEngine::wikiResponse(const QString &html, const QString &lang)
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{
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DBUG << html.isEmpty() << lang.isEmpty();
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if (!html.isEmpty()) {
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// Got a wikipedia reponse, use it!
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DBUG << "Got wiki response!";
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lastfm->cancel();
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emit searchResult(html, lang);
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responses.clear();
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} else if (responses[LastFm].html.isEmpty()) {
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DBUG << "Wiki empty, but not received last.fm";
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// Wikipedia response is empty, but have not received last.fm reply yet.
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// So, indicate that Wikipedia was empty - and wait for last.fm
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responses[Wiki]=Response(constBlankResp, lang);
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} else if (constBlankResp==responses[LastFm].html) {
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DBUG << "Both responses empty";
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// Last.fm is empty as well :-(
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emit searchResult(QString(), QString());
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responses.clear();
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} else {
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// Got a last.fm response, use that!
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DBUG << "Wiki empty, last.fm not - so use last.fm";
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emit searchResult(responses[LastFm].html, responses[LastFm].lang);
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responses.clear();
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}
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}
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void MetaEngine::lastFmResponse(const QString &html, const QString &lang)
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{
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DBUG << html.isEmpty() << lang.isEmpty();
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if (constBlankResp==responses[Wiki].html) {
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// Wikipedia failed, so use last.fm response...
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DBUG << "Wiki failed, so use last.fm";
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emit searchResult(html, lang);
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responses.clear();
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} else if (responses[Wiki].html.isEmpty()) {
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// No Wikipedia response yet, so save last.fm response...
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DBUG << "No wiki response, save last.fm";
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responses[LastFm]=Response(html.isEmpty() ? constBlankResp : html, lang);
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}
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}
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#include "moc_metaengine.cpp"
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