277 lines
9.0 KiB
C++
277 lines
9.0 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry 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 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry 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 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <algorithm>
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#include <QtGlobal>
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#include <QObject>
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#include <QVariant>
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#include <QByteArray>
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#include <QString>
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#include <QUrl>
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#include <QUrlQuery>
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#include <QTimer>
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#include <QNetworkRequest>
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#include <QNetworkReply>
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#include <QJsonDocument>
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#include <QJsonValue>
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#include <QJsonObject>
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#include <QJsonArray>
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#include "core/shared_ptr.h"
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#include "core/application.h"
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#include "core/networkaccessmanager.h"
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#include "core/logging.h"
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#include "albumcoverfetcher.h"
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#include "jsoncoverprovider.h"
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#include "musicbrainzcoverprovider.h"
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namespace {
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constexpr char kReleaseSearchUrl[] = "https://musicbrainz.org/ws/2/release/";
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constexpr char kAlbumCoverUrl[] = "https://coverartarchive.org/release/%1/front";
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constexpr int kLimit = 8;
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constexpr int kRequestsDelay = 1000;
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} // namespace
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MusicbrainzCoverProvider::MusicbrainzCoverProvider(Application *app, SharedPtr<NetworkAccessManager> network, QObject *parent)
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: JsonCoverProvider(QStringLiteral("MusicBrainz"), true, false, 1.5, true, false, app, network, parent),
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timer_flush_requests_(new QTimer(this)) {
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timer_flush_requests_->setInterval(kRequestsDelay);
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timer_flush_requests_->setSingleShot(false);
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QObject::connect(timer_flush_requests_, &QTimer::timeout, this, &MusicbrainzCoverProvider::FlushRequests);
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}
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MusicbrainzCoverProvider::~MusicbrainzCoverProvider() {
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while (!replies_.isEmpty()) {
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QNetworkReply *reply = replies_.takeFirst();
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QObject::disconnect(reply, nullptr, this, nullptr);
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reply->abort();
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reply->deleteLater();
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}
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}
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bool MusicbrainzCoverProvider::StartSearch(const QString &artist, const QString &album, const QString &title, const int id) {
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Q_UNUSED(title);
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if (artist.isEmpty() || album.isEmpty()) return false;
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SearchRequest request(id, artist, album);
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queue_search_requests_ << request;
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if (!timer_flush_requests_->isActive()) {
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timer_flush_requests_->start();
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}
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return true;
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}
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void MusicbrainzCoverProvider::SendSearchRequest(const SearchRequest &request) {
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QString query = QStringLiteral("release:\"%1\" AND artist:\"%2\"").arg(request.album.trimmed().replace(QLatin1Char('"'), QLatin1String("\\\"")), request.artist.trimmed().replace(QLatin1Char('"'), QLatin1String("\\\"")));
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QUrlQuery url_query;
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url_query.addQueryItem(QStringLiteral("query"), query);
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url_query.addQueryItem(QStringLiteral("limit"), QString::number(kLimit));
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url_query.addQueryItem(QStringLiteral("fmt"), QStringLiteral("json"));
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QUrl url(QString::fromLatin1(kReleaseSearchUrl));
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url.setQuery(url_query);
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QNetworkRequest req(url);
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req.setAttribute(QNetworkRequest::RedirectPolicyAttribute, QNetworkRequest::NoLessSafeRedirectPolicy);
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QNetworkReply *reply = network_->get(req);
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replies_ << reply;
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QObject::connect(reply, &QNetworkReply::finished, this, [this, reply, request]() { HandleSearchReply(reply, request.id); });
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}
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void MusicbrainzCoverProvider::FlushRequests() {
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if (!queue_search_requests_.isEmpty()) {
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SendSearchRequest(queue_search_requests_.dequeue());
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return;
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}
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timer_flush_requests_->stop();
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}
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void MusicbrainzCoverProvider::HandleSearchReply(QNetworkReply *reply, const int search_id) {
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if (!replies_.contains(reply)) return;
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replies_.removeAll(reply);
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QObject::disconnect(reply, nullptr, this, nullptr);
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reply->deleteLater();
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CoverProviderSearchResults results;
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QByteArray data = GetReplyData(reply);
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if (data.isEmpty()) {
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emit SearchFinished(search_id, results);
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return;
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}
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QJsonObject json_obj = ExtractJsonObj(data);
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if (json_obj.isEmpty()) {
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emit SearchFinished(search_id, results);
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return;
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}
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if (!json_obj.contains(QStringLiteral("releases"))) {
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if (json_obj.contains(QStringLiteral("error"))) {
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QString error = json_obj[QStringLiteral("error")].toString();
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Error(error);
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}
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else {
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Error(QStringLiteral("Json reply is missing releases."), json_obj);
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}
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emit SearchFinished(search_id, results);
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return;
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}
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QJsonValue value_releases = json_obj[QStringLiteral("releases")];
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if (!value_releases.isArray()) {
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Error(QStringLiteral("Json releases is not an array."), value_releases);
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emit SearchFinished(search_id, results);
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return;
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}
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QJsonArray array_releases = value_releases.toArray();
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if (array_releases.isEmpty()) {
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emit SearchFinished(search_id, results);
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return;
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}
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for (const QJsonValueRef value_release : array_releases) {
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if (!value_release.isObject()) {
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Error(QStringLiteral("Invalid Json reply, releases array value is not an object."));
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continue;
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}
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QJsonObject obj_release = value_release.toObject();
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if (!obj_release.contains(QStringLiteral("id")) || !obj_release.contains(QStringLiteral("artist-credit")) || !obj_release.contains(QStringLiteral("title"))) {
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Error(QStringLiteral("Invalid Json reply, releases array object is missing id, artist-credit or title."), obj_release);
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continue;
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}
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QJsonValue json_artists = obj_release[QStringLiteral("artist-credit")];
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if (!json_artists.isArray()) {
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Error(QStringLiteral("Invalid Json reply, artist-credit is not a array."), json_artists);
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continue;
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}
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QJsonArray array_artists = json_artists.toArray();
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int i = 0;
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QString artist;
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for (const QJsonValueRef value_artist : array_artists) {
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if (!value_artist.isObject()) {
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Error(QStringLiteral("Invalid Json reply, artist is not a object."));
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continue;
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}
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QJsonObject obj_artist = value_artist.toObject();
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if (!obj_artist.contains(QStringLiteral("artist"))) {
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Error(QStringLiteral("Invalid Json reply, artist is missing."), obj_artist);
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continue;
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}
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QJsonValue value_artist2 = obj_artist[QStringLiteral("artist")];
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if (!value_artist2.isObject()) {
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Error(QStringLiteral("Invalid Json reply, artist is not an object."), value_artist2);
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continue;
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}
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QJsonObject obj_artist2 = value_artist2.toObject();
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if (!obj_artist2.contains(QStringLiteral("name"))) {
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Error(QStringLiteral("Invalid Json reply, artist is missing name."), value_artist2);
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continue;
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}
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artist = obj_artist2[QStringLiteral("name")].toString();
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++i;
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}
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if (i > 1) artist = QStringLiteral("Various artists");
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QString id = obj_release[QStringLiteral("id")].toString();
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QString album = obj_release[QStringLiteral("title")].toString();
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CoverProviderSearchResult cover_result;
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QUrl url(QString::fromLatin1(kAlbumCoverUrl).arg(id));
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cover_result.artist = artist;
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cover_result.album = album;
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cover_result.image_url = url;
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results.append(cover_result);
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}
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emit SearchFinished(search_id, results);
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}
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QByteArray MusicbrainzCoverProvider::GetReplyData(QNetworkReply *reply) {
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QByteArray data;
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if (reply->error() == QNetworkReply::NoError && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 200) {
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data = reply->readAll();
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}
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else {
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if (reply->error() != QNetworkReply::NoError && reply->error() < 200) {
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// This is a network error, there is nothing more to do.
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QString failure_reason = QStringLiteral("%1 (%2)").arg(reply->errorString()).arg(reply->error());
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Error(failure_reason);
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}
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else {
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// See if there is Json data containing "error" - then use that instead.
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data = reply->readAll();
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QString error;
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QJsonParseError json_error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &json_error);
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if (json_error.error == QJsonParseError::NoError && !json_doc.isEmpty() && json_doc.isObject()) {
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QJsonObject json_obj = json_doc.object();
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if (json_obj.contains(QStringLiteral("error"))) {
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error = json_obj[QStringLiteral("error")].toString();
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}
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}
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if (error.isEmpty()) {
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if (reply->error() != QNetworkReply::NoError) {
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error = QStringLiteral("%1 (%2)").arg(reply->errorString()).arg(reply->error());
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}
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else {
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error = QStringLiteral("Received HTTP code %1").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt());
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}
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}
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Error(error);
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}
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return QByteArray();
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}
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return data;
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}
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void MusicbrainzCoverProvider::Error(const QString &error, const QVariant &debug) {
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qLog(Error) << "Musicbrainz:" << error;
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if (debug.isValid()) qLog(Debug) << debug;
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}
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