strawberry-audio-player-win.../src/lyrics/musixmatchlyricsprovider.cpp

408 lines
13 KiB
C++

/*
* Strawberry Music Player
* Copyright 2020-2022, Jonas Kvinge <jonas@jkvinge.net>
*
* Strawberry 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 3 of the License, or
* (at your option) any later version.
*
* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <memory>
#include <QObject>
#include <QByteArray>
#include <QVariant>
#include <QString>
#include <QUrl>
#include <QUrlQuery>
#include <QRegularExpression>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QJsonObject>
#include <QJsonArray>
#include "core/logging.h"
#include "core/shared_ptr.h"
#include "core/networkaccessmanager.h"
#include "utilities/strutils.h"
#include "jsonlyricsprovider.h"
#include "lyricssearchrequest.h"
#include "lyricssearchresult.h"
#include "musixmatchlyricsprovider.h"
#include "providers/musixmatchprovider.h"
using std::make_shared;
MusixmatchLyricsProvider::MusixmatchLyricsProvider(SharedPtr<NetworkAccessManager> network, QObject *parent) : JsonLyricsProvider("Musixmatch", true, false, network, parent), use_api_(true) {}
MusixmatchLyricsProvider::~MusixmatchLyricsProvider() {
while (!replies_.isEmpty()) {
QNetworkReply *reply = replies_.takeFirst();
QObject::disconnect(reply, nullptr, this, nullptr);
reply->abort();
reply->deleteLater();
}
}
bool MusixmatchLyricsProvider::StartSearch(const int id, const LyricsSearchRequest &request) {
LyricsSearchContextPtr search = make_shared<LyricsSearchContext>();
search->id = id;
search->request = request;
requests_search_.append(search);
if (use_api_) {
return SendSearchRequest(search);
}
else {
return CreateLyricsRequest(search);
}
}
void MusixmatchLyricsProvider::CancelSearch(const int id) { Q_UNUSED(id); }
bool MusixmatchLyricsProvider::SendSearchRequest(LyricsSearchContextPtr search) {
QUrlQuery url_query;
url_query.addQueryItem("apikey", QByteArray::fromBase64(kApiKey));
url_query.addQueryItem("q_artist", QUrl::toPercentEncoding(search->request.artist));
url_query.addQueryItem("q_track", QUrl::toPercentEncoding(search->request.title));
url_query.addQueryItem("f_has_lyrics", "1");
QUrl url(QString(kApiUrl) + QString("/track.search"));
url.setQuery(url_query);
QNetworkRequest req(url);
req.setAttribute(QNetworkRequest::RedirectPolicyAttribute, QNetworkRequest::NoLessSafeRedirectPolicy);
QNetworkReply *reply = network_->get(req);
replies_ << reply;
QObject::connect(reply, &QNetworkReply::finished, this, [this, reply, search]() { HandleSearchReply(reply, search); });
qLog(Debug) << "MusixmatchLyrics: Sending request for" << url;
return true;
}
void MusixmatchLyricsProvider::HandleSearchReply(QNetworkReply *reply, LyricsSearchContextPtr search) {
if (!replies_.contains(reply)) return;
replies_.removeAll(reply);
QObject::disconnect(reply, nullptr, this, nullptr);
reply->deleteLater();
if (reply->error() != QNetworkReply::NoError) {
if (reply->error() == 401 || reply->error() == 402) {
Error(QString("Error %1 (%2) using API, switching to URL based lookup.").arg(reply->errorString()).arg(reply->error()));
use_api_ = false;
CreateLyricsRequest(search);
return;
}
Error(QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
EndSearch(search);
return;
}
if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() != 200) {
if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 401 || reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 402) {
Error(QString("Received HTTP code %1 using API, switching to URL based lookup.").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt()));
use_api_ = false;
CreateLyricsRequest(search);
return;
}
Error(QString("Received HTTP code %1").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt()));
EndSearch(search);
return;
}
QByteArray data = reply->readAll();
QJsonObject json_obj = ExtractJsonObj(data);
if (json_obj.isEmpty()) {
EndSearch(search);
return;
}
if (!json_obj.contains("message")) {
Error("Json reply is missing message object.", json_obj);
EndSearch(search);
return;
}
if (!json_obj["message"].isObject()) {
Error("Json reply message is not an object.", json_obj);
EndSearch(search);
return;
}
QJsonObject obj_message = json_obj["message"].toObject();
if (!obj_message.contains("header")) {
Error("Json reply message object is missing header.", obj_message);
EndSearch(search);
return;
}
if (!obj_message["header"].isObject()) {
Error("Json reply message header is not an object.", obj_message);
EndSearch(search);
return;
}
QJsonObject obj_header = obj_message["header"].toObject();
int status_code = obj_header["status_code"].toInt();
if (status_code != 200) {
Error(QString("Received status code %1, switching to URL based lookup.").arg(status_code));
use_api_ = false;
CreateLyricsRequest(search);
return;
}
if (!obj_message.contains("body")) {
Error("Json reply is missing body.", json_obj);
EndSearch(search);
return;
}
if (!obj_message["body"].isObject()) {
Error("Json body is not an object.", json_obj);
EndSearch(search);
return;
}
QJsonObject obj_body = obj_message["body"].toObject();
if (!obj_body.contains("track_list")) {
Error("Json response is missing body.", obj_body);
EndSearch(search);
return;
}
if (!obj_body["track_list"].isArray()) {
Error("Json hits is not an array.", obj_body);
EndSearch(search);
return;
}
QJsonArray array_tracklist = obj_body["track_list"].toArray();
for (const QJsonValueRef value_track : array_tracklist) {
if (!value_track.isObject()) {
continue;
}
QJsonObject obj_track = value_track.toObject();
if (!obj_track.contains("track") || !obj_track["track"].isObject()) {
continue;
}
obj_track = obj_track["track"].toObject();
if (!obj_track.contains("artist_name") ||
!obj_track.contains("album_name") ||
!obj_track.contains("track_name") ||
!obj_track.contains("track_share_url")) {
Error("Missing one or more values in result object", obj_track);
continue;
}
QString artist_name = obj_track["artist_name"].toString();
QString album_name = obj_track["album_name"].toString();
QString track_name = obj_track["track_name"].toString();
QUrl track_share_url(obj_track["track_share_url"].toString());
// Ignore results where both the artist, album and title don't match.
if (use_api_ &&
artist_name.compare(search->request.albumartist, Qt::CaseInsensitive) != 0 &&
artist_name.compare(search->request.artist, Qt::CaseInsensitive) != 0 &&
album_name.compare(search->request.album, Qt::CaseInsensitive) != 0 &&
track_name.compare(search->request.title, Qt::CaseInsensitive) != 0) {
continue;
}
if (!track_share_url.isValid()) continue;
if (search->requests_lyrics_.contains(track_share_url)) continue;
search->requests_lyrics_.append(track_share_url);
}
if (search->requests_lyrics_.isEmpty()) {
EndSearch(search);
}
else {
for (const QUrl &url : search->requests_lyrics_) {
SendLyricsRequest(search, url);
}
}
}
bool MusixmatchLyricsProvider::CreateLyricsRequest(LyricsSearchContextPtr search) {
QString artist_stripped = StringFixup(search->request.artist);
QString title_stripped = StringFixup(search->request.title);
if (artist_stripped.isEmpty() || title_stripped.isEmpty()) {
EndSearch(search);
return false;
}
QUrl url(QString("https://www.musixmatch.com/lyrics/%1/%2").arg(artist_stripped, title_stripped));
search->requests_lyrics_.append(url);
return SendLyricsRequest(search, url);
}
bool MusixmatchLyricsProvider::SendLyricsRequest(LyricsSearchContextPtr search, const QUrl &url) {
QNetworkRequest req(url);
req.setAttribute(QNetworkRequest::RedirectPolicyAttribute, QNetworkRequest::NoLessSafeRedirectPolicy);
QNetworkReply *reply = network_->get(req);
replies_ << reply;
QObject::connect(reply, &QNetworkReply::finished, this, [this, reply, search, url]() { HandleLyricsReply(reply, search, url); });
qLog(Debug) << "MusixmatchLyrics: Sending request for" << url;
return true;
}
void MusixmatchLyricsProvider::HandleLyricsReply(QNetworkReply *reply, LyricsSearchContextPtr search, const QUrl &url) {
if (!replies_.contains(reply)) return;
replies_.removeAll(reply);
QObject::disconnect(reply, nullptr, this, nullptr);
reply->deleteLater();
if (reply->error() != QNetworkReply::NoError) {
Error(QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
EndSearch(search, url);
return;
}
else if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() != 200) {
Error(QString("Received HTTP code %1").arg(reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt()));
EndSearch(search, url);
return;
}
QByteArray data = reply->readAll();
if (data.isEmpty()) {
Error("Empty reply received from server.");
EndSearch(search, url);
return;
}
QString content = data;
QString data_begin = "var __mxmState = ";
QString data_end = ";</script>";
qint64 begin_idx = content.indexOf(data_begin);
QString content_json;
if (begin_idx > 0) {
begin_idx += data_begin.length();
qint64 end_idx = content.indexOf(data_end, begin_idx);
if (end_idx > begin_idx) {
content_json = content.mid(begin_idx, end_idx - begin_idx);
}
}
if (content_json.isEmpty()) {
EndSearch(search, url);
return;
}
if (content_json.contains(QRegularExpression("<[^>]*>"))) { // Make sure it's not HTML code.
EndSearch(search, url);
return;
}
QJsonObject json_obj = ExtractJsonObj(content_json.toUtf8());
if (json_obj.isEmpty()) {
EndSearch(search, url);
return;
}
if (!json_obj.contains("page") || !json_obj["page"].isObject()) {
Error("Json reply is missing page.", json_obj);
EndSearch(search, url);
return;
}
json_obj = json_obj["page"].toObject();
if (!json_obj.contains("track") || !json_obj["track"].isObject()) {
Error("Json reply is missing track.", json_obj);
EndSearch(search, url);
return;
}
QJsonObject obj_track = json_obj["track"].toObject();
if (!obj_track.contains("artistName") || !obj_track.contains("albumName") || !obj_track.contains("name")) {
Error("Json track is missing artistName, albumName or name.", json_obj);
EndSearch(search, url);
return;
}
if (!json_obj.contains("lyrics") || !json_obj["lyrics"].isObject()) {
Error("Json reply is missing lyrics.", json_obj);
EndSearch(search, url);
return;
}
QJsonObject obj_lyrics = json_obj["lyrics"].toObject();
if (!obj_lyrics.contains("lyrics") || !obj_lyrics["lyrics"].isObject()) {
Error("Json reply is missing lyrics.", obj_lyrics);
EndSearch(search, url);
return;
}
obj_lyrics = obj_lyrics["lyrics"].toObject();
if (obj_lyrics.isEmpty() || !obj_lyrics.contains("body")) {
EndSearch(search, url);
return;
}
LyricsSearchResult result;
result.artist = obj_track["artistName"].toString();
result.album = obj_track["albumName"].toString();
result.title = obj_track["name"].toString();
result.lyrics = obj_lyrics["body"].toString();
if (!result.lyrics.isEmpty()) {
result.lyrics = Utilities::DecodeHtmlEntities(result.lyrics);
search->results.append(result);
}
EndSearch(search, url);
}
void MusixmatchLyricsProvider::EndSearch(LyricsSearchContextPtr search, const QUrl &url) {
if (search->requests_lyrics_.contains(url)) {
search->requests_lyrics_.removeAll(url);
}
if (search->requests_lyrics_.count() == 0) {
requests_search_.removeAll(search);
if (search->results.isEmpty()) {
qLog(Debug) << "MusixmatchLyrics: No lyrics for" << search->request.artist << search->request.title;
}
else {
qLog(Debug) << "MusixmatchLyrics: Got lyrics for" << search->request.artist << search->request.title;
}
emit SearchFinished(search->id, search->results);
}
}
void MusixmatchLyricsProvider::Error(const QString &error, const QVariant &debug) {
qLog(Error) << "MusixmatchLyrics:" << error;
if (debug.isValid()) qLog(Debug) << debug;
}