521 lines
16 KiB
C++
521 lines
16 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2013 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 "artistview.h"
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#include "localize.h"
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#include "covers.h"
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#include "utils.h"
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#include "combobox.h"
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#include "headerlabel.h"
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#include "musiclibrarymodel.h"
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#include "networkaccessmanager.h"
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#include "settings.h"
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#include "qjson/parser.h"
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#include "qtiocompressor/qtiocompressor.h"
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#include <QNetworkReply>
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#include <QApplication>
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#include <QTextBrowser>
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#include <QLayout>
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#if QT_VERSION >= 0x050000
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#include <QUrlQuery>
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#endif
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#ifndef Q_OS_WIN
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#include <QProcess>
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#include <QXmlStreamReader>
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#endif
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#include <QPixmap>
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#include <QFile>
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static const QLatin1String constApiKey("N5JHVHNG0UOZZIDVT");
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static const char *constNameKey="name";
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static const int constCacheAge=7;
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const QLatin1String ArtistView::constCacheDir("artists/");
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const QLatin1String ArtistView::constInfoExt(".json.gz");
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static QString cacheFileName(const QString &artist, bool similar, bool createDir)
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{
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return Utils::cacheDir(ArtistView::constCacheDir, createDir)+Covers::encodeName(artist)+(similar ? "-similar" : "")+ArtistView::constInfoExt;
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}
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ArtistView::ArtistView(QWidget *parent)
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: View(parent)
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, currentBioJob(0)
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, currentSimilarJob(0)
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{
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combo=new ComboBox(this);
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connect(combo, SIGNAL(currentIndexChanged(int)), SLOT(setBio()));
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layout()->addWidget(combo);
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connect(Covers::self(), SIGNAL(artistImage(Song,QImage,QString)), SLOT(artistImage(Song,QImage,QString)));
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connect(text, SIGNAL(anchorClicked(QUrl)), SLOT(showArtist(QUrl)));
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Utils::clearOldCache(constCacheDir, constCacheAge);
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setStandardHeader(i18n("Artist Information"));
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int imageHeight=fontMetrics().height()*14;
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int imageWidth=imageHeight*1.5;
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setPicSize(QSize(imageWidth, imageHeight));
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provider=Settings::self()->infoProvider();
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clear();
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}
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void ArtistView::saveSettings()
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{
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if (combo->count()) {
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provider=combo->itemData(combo->currentIndex()).toString();
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}
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if (!provider.isEmpty()) {
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Settings::self()->saveInfoProvider(provider);
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}
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}
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void ArtistView::update(const Song &s, bool force)
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{
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Song song=s;
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if (song.isVariousArtists()) {
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song.revertVariousArtists();
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}
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if (!song.albumartist.isEmpty() && !song.artist.isEmpty() && song.albumartist.length()<song.artist.length() && song.artist.startsWith(song.albumartist)) {
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song.artist=song.albumartist;
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}
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bool artistChanged=song.artist!=currentSong.artist;
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if (!isVisible()) {
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if (artistChanged) {
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needToUpdate=true;
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}
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currentSong=song;
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return;
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}
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if (artistChanged || force) {
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currentSong=song;
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if (combo->count()) {
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provider=combo->itemData(combo->currentIndex()).toString();
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}
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clear();
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combo->clear();
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biographies.clear();
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similarArtists=QString();
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if (!currentSong.isEmpty()) {
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text->setText("<i>Retrieving...</i>");
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setHeader(currentSong.artist);
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Song s;
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s.albumartist=currentSong.artist;
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s.file=currentSong.file;
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Covers::Image img=Covers::self()->requestImage(s);
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if (!img.img.isNull()) {
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artistImage(s, img.img, img.fileName);
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}
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loadBio();
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}
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}
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}
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void ArtistView::artistImage(const Song &song, const QImage &i, const QString &f)
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{
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Q_UNUSED(f)
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if (song.albumartist==currentSong.artist) {
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setPic(i);
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}
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}
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void ArtistView::setProvider()
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{
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if (!provider.isEmpty() && combo->itemData(combo->currentIndex()).toString()!=provider) {
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for (int i=0; i<combo->count(); ++i) {
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if (combo->itemData(i).toString()==provider) {
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combo->setCurrentIndex(i);
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break;
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}
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}
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provider=combo->itemData(combo->currentIndex()).toString();
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}
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}
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void ArtistView::loadBio()
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{
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QString cachedFile=cacheFileName(currentSong.artist, false, false);
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if (QFile::exists(cachedFile)) {
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QFile f(cachedFile);
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QtIOCompressor compressor(&f);
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compressor.setStreamFormat(QtIOCompressor::GzipFormat);
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if (compressor.open(QIODevice::ReadOnly)) {
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QByteArray data=compressor.readAll();
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if (!data.isEmpty() && parseBioResponse(data)) {
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setProvider();
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setBio();
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Utils::touchFile(cachedFile);
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return;
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}
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}
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}
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showSpinner();
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requestBio();
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}
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void ArtistView::loadSimilar()
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{
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QString cachedFile=cacheFileName(currentSong.artist, true, false);
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if (QFile::exists(cachedFile)) {
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QFile f(cachedFile);
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QtIOCompressor compressor(&f);
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compressor.setStreamFormat(QtIOCompressor::GzipFormat);
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if (compressor.open(QIODevice::ReadOnly)) {
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QByteArray data=compressor.readAll();
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if (!data.isEmpty() && parseSimilarResponse(data)) {
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setBio();
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Utils::touchFile(cachedFile);
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return;
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}
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}
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}
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requestSimilar();
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}
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void ArtistView::handleBioReply()
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{
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QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
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if (!reply) {
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return;
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}
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if (reply==currentBioJob) {
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hideSpinner();
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bool ok=false;
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if (QNetworkReply::NoError==reply->error()) {
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QByteArray data=reply->readAll();
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if (parseBioResponse(data)) {
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setProvider();
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setBio();
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ok=true;
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QFile f(cacheFileName(reply->property(constNameKey).toString(), false, true));
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QtIOCompressor compressor(&f);
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compressor.setStreamFormat(QtIOCompressor::GzipFormat);
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if (compressor.open(QIODevice::WriteOnly)) {
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compressor.write(data);
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}
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}
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}
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if (!ok) {
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text->setText(i18n(("<i><Failed to download information!</i>")));
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}
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reply->deleteLater();
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currentBioJob=0;
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}
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}
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void ArtistView::handleSimilarReply()
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{
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QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
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if (!reply) {
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return;
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}
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if (reply==currentSimilarJob) {
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if (QNetworkReply::NoError==reply->error()) {
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QByteArray data=reply->readAll();
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if (parseSimilarResponse(data)) {
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setBio();
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QFile f(cacheFileName(reply->property(constNameKey).toString(), true, true));
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QtIOCompressor compressor(&f);
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compressor.setStreamFormat(QtIOCompressor::GzipFormat);
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if (compressor.open(QIODevice::WriteOnly)) {
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compressor.write(data);
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}
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}
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}
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reply->deleteLater();
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currentSimilarJob=0;
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}
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}
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void ArtistView::setBio()
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{
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int bio=combo->currentIndex();
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if (biographies.contains(bio)) {
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QString html=biographies[bio];
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if (!similarArtists.isEmpty()) {
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html+=similarArtists;
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}
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#ifndef Q_OS_WIN
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if (webLinks.isEmpty()) {
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QFile file(":weblinks.xml");
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if (file.open(QIODevice::ReadOnly)) {
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QXmlStreamReader reader(&file);
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while (!reader.atEnd()) {
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reader.readNext();
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if (QLatin1String("link")==reader.name()) {
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QXmlStreamAttributes attributes = reader.attributes();
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QString url=attributes.value("url").toString();
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QString name=attributes.value("name").toString();
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if (!url.isEmpty() && !name.isEmpty()) {
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webLinks+=QLatin1String("<li><a href=\"")+url+"\">"+name+"</a></li>";
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}
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}
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}
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}
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}
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if (!webLinks.isEmpty()) {
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html+="<h3>"+i18n("Web Links")+"</h3><ul>"+QString(webLinks).replace("${artist}", currentSong.artist)+"</ul>";
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}
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#endif
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text->setText(html);
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}
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}
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void ArtistView::requestBio()
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{
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abort();
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#if QT_VERSION < 0x050000
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QUrl url;
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QUrl &query=url;
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#else
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QUrl url;
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QUrlQuery query;
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#endif
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url.setScheme("http");
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url.setHost("developer.echonest.com");
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url.setPath("api/v4/artist/biographies");
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query.addQueryItem("api_key", constApiKey);
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query.addQueryItem("name", currentSong.artist);
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query.addQueryItem("format", "json");
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#if QT_VERSION >= 0x050000
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url.setQuery(query);
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#endif
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currentBioJob=NetworkAccessManager::self()->get(url);
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currentBioJob->setProperty(constNameKey, currentSong.artist);
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connect(currentBioJob, SIGNAL(finished()), this, SLOT(handleBioReply()));
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}
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void ArtistView::requestSimilar()
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{
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abort();
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#if QT_VERSION < 0x050000
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QUrl url;
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QUrl &query=url;
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#else
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QUrl url;
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QUrlQuery query;
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#endif
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url.setScheme("http");
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url.setHost("developer.echonest.com");
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url.setPath("api/v4/artist/similar");
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query.addQueryItem("api_key", constApiKey);
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query.addQueryItem("name", currentSong.artist);
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query.addQueryItem("format", "json");
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#if QT_VERSION >= 0x050000
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url.setQuery(query);
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#endif
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currentSimilarJob=NetworkAccessManager::self()->get(url);
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currentSimilarJob->setProperty(constNameKey, currentSong.artist);
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connect(currentSimilarJob, SIGNAL(finished()), this, SLOT(handleSimilarReply()));
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}
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void ArtistView::abort()
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{
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if (currentBioJob) {
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disconnect(currentBioJob, SIGNAL(finished()), this, SLOT(handleBioReply()));
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currentBioJob->abort();
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currentBioJob=0;
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}
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if (currentSimilarJob) {
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disconnect(currentSimilarJob, SIGNAL(finished()), this, SLOT(handleSimilarArtistsReply()));
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currentSimilarJob->abort();
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currentSimilarJob=0;
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}
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}
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struct Bio
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{
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Bio(const QString &s=QString(), const QString &t=QString())
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: site(s), text(t) {
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if (QLatin1String("last.fm")==site) {
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text.replace(" ", "<br/><br/>");
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} else if (QLatin1String("wikipedia")==site) {
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text.replace(" \n\" \n\n", "\"<br/><br/>");
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text.replace(" \n\n\" \n", "<br/><br/>\"");
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text.replace("\n", "<br/><br/>");
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} else {
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text.replace("\n", "<br/><br/>");
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}
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text.replace("<br/><br/><br/>", "<br/>");
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}
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QString site;
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QString text;
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};
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static int value(const QString &site)
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{
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return QLatin1String("last.fm")==site
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? 0
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: QLatin1String("wikipedia")==site
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? 1
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: 2;
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}
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static const QString constReferencesLine("This article does not cite any references or sources.");
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static const QString constDisambiguationLine("This article is about the band");
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static const QString constDisambiguationLine2("For other uses, see ");
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bool ArtistView::parseBioResponse(const QByteArray &resp)
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{
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QMultiMap<int, Bio> biogs;
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QJson::Parser parser;
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bool ok=false;
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QVariantMap parsed=parser.parse(resp, &ok).toMap();
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if (ok && parsed.contains("response")) {
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QVariantMap response=parsed["response"].toMap();
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if (response.contains("biographies")) {
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QVariantList biographies=response["biographies"].toList();
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foreach (const QVariant &b, biographies) {
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QVariantMap details=b.toMap();
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if (!details.isEmpty() && details.contains("text") && details.contains("site")) {
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QString site=details["site"].toString();
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QString text=details["text"].toString();
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if (text.startsWith(constReferencesLine) || text.startsWith(constDisambiguationLine) || text.startsWith(constDisambiguationLine2)) {
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int eol=text.indexOf("\n");
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if (-1!=eol) {
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text=text.mid(eol+1);
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}
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}
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// if (QLatin1String("wikipedia")==site) {
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// int start=text.indexOf("\n , ");
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// if (-1!=start) {
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// int end=text.indexOf("\n", start+4);
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// if (-1!=end) {
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// text=text.remove(start, end-start);
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// }
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// }
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// }
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while ('\n'==text[0]) {
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text=text.mid(1);
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}
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text.replace("\n ", "\n");
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biogs.insertMulti(value(site), Bio(site, text));
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}
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}
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}
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}
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QMultiMap<int, Bio>::ConstIterator it=biogs.constBegin();
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QMultiMap<int, Bio>::ConstIterator end=biogs.constEnd();
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for (; it!=end; ++it) {
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if (it.value().text.length()<75 && combo->count()>0) {
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// Ignore the "..." cr*p
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continue;
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}
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// And some others that seem to be just lots of dots???
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if (it.value().text.length()<250) {
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QString copy=it.value().text;
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copy.replace(".", "");
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if (copy.length()<75) {
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continue;
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}
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}
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biographies[combo->count()]=it.value().text;
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combo->insertItem(combo->count(), i18n("Source: %1").arg(it.value().site), it.value().site);
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}
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if (!biogs.isEmpty()) {
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loadSimilar();
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}
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return !biogs.isEmpty();
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}
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bool ArtistView::parseSimilarResponse(const QByteArray &resp)
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{
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QSet<QString> mpdArtists=MusicLibraryModel::self()->getAlbumArtists();
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QJson::Parser parser;
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bool ok=false;
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QVariantMap parsed=parser.parse(resp, &ok).toMap();
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if (ok && parsed.contains("response")) {
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QVariantMap response=parsed["response"].toMap();
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if (response.contains("artists")) {
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QVariantList artists=response["artists"].toList();
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foreach (const QVariant &a, artists) {
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QVariantMap details=a.toMap();
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if (!details.isEmpty() && details.contains("name")) {
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QString artist=details["name"].toString();
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if (similarArtists.isEmpty()) {
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similarArtists="<br/><h3>"+i18n("Similar Artists")+"</h3><ul>";
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}
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if (mpdArtists.contains(artist)) {
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artist=QLatin1String("<a href=\"cantata://?artist=")+artist+"\">"+artist+"</a>";
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} else {
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// Check for AC/DC -> AC-DC
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QString mod=artist;
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mod=mod.replace("/", "-");
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if (mod!=artist && mpdArtists.contains(mod)) {
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artist=QLatin1String("<a href=\"cantata://?artist=")+mod+"\">"+artist+"</a>";
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}
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}
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similarArtists+="<li>"+artist+"</li>";
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}
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}
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}
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}
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if (!similarArtists.isEmpty()) {
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similarArtists+="</ul></p>";
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}
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return !similarArtists.isEmpty();
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}
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void ArtistView::showArtist(const QUrl &url)
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{
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if (QLatin1String("cantata")==url.scheme()) {
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#if QT_VERSION < 0x050000
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const QUrl &q=url;
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#else
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QUrlQuery q(url);
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#endif
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if (q.hasQueryItem("artist")) {
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emit findArtist(q.queryItemValue("artist"));
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}
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}
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#ifndef Q_OS_WIN
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else {
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QProcess::startDetached(QLatin1String("xdg-open"), QStringList() << url.toString());
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}
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#endif
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}
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