319 lines
9.5 KiB
C++
319 lines
9.5 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2018, 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 <QPair>
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#include <QSet>
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#include <QList>
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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 <QNetworkAccessManager>
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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 <QtDebug>
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#include "core/application.h"
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#include "core/network.h"
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#include "core/logging.h"
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#include "core/song.h"
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#include "albumcoverfetcher.h"
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#include "coverprovider.h"
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#include "deezercoverprovider.h"
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const char *DeezerCoverProvider::kApiUrl = "https://api.deezer.com";
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const int DeezerCoverProvider::kLimit = 10;
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DeezerCoverProvider::DeezerCoverProvider(Application *app, QObject *parent): CoverProvider("Deezer", true, false, 2.0, true, true, app, parent), network_(new NetworkAccessManager(this)) {}
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bool DeezerCoverProvider::StartSearch(const QString &artist, const QString &album, const QString &title, const int id) {
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typedef QPair<QString, QString> Param;
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typedef QList<Param> Params;
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QString resource;
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QString query;
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if (album.isEmpty()) {
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resource = "search/track";
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query = artist + " " + title;
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}
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else {
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resource = "search/album";
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query = artist + " " + album;
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}
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const Params params = Params() << Param("output", "json")
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<< Param("q", query)
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<< Param("limit", QString::number(kLimit));
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QUrlQuery url_query;
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for (const Param ¶m : params) {
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url_query.addQueryItem(QUrl::toPercentEncoding(param.first), QUrl::toPercentEncoding(param.second));
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}
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QUrl url(kApiUrl + QString("/") + resource);
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url.setQuery(url_query);
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QNetworkRequest req(url);
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req.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
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QNetworkReply *reply = network_->get(req);
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connect(reply, &QNetworkReply::finished, [=] { HandleSearchReply(reply, id); });
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return true;
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}
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void DeezerCoverProvider::CancelSearch(const int id) { Q_UNUSED(id); }
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QByteArray DeezerCoverProvider::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 error = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
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Error(error);
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}
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else {
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// See if there is Json data containing "error" object - then use that instead.
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data = reply->readAll();
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QJsonParseError json_error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &json_error);
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QString 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("error")) {
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QJsonValue value_error = json_obj["error"];
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if (value_error.isObject()) {
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QJsonObject obj_error = value_error.toObject();
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int code = obj_error["code"].toInt();
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QString message = obj_error["message"].toString();
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QString type = obj_error["type"].toString();
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error = QString("%1 (%2)").arg(message).arg(code);
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}
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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 = QString("%1 (%2)").arg(reply->errorString()).arg(reply->error());
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}
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else {
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error = QString("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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QJsonObject DeezerCoverProvider::ExtractJsonObj(const QByteArray &data) {
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QJsonParseError error;
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QJsonDocument json_doc = QJsonDocument::fromJson(data, &error);
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if (error.error != QJsonParseError::NoError) {
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Error("Reply from server missing Json data.", data);
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return QJsonObject();
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}
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if (json_doc.isEmpty()) {
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Error("Received empty Json document.", json_doc);
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return QJsonObject();
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}
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if (!json_doc.isObject()) {
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Error("Json document is not an object.", json_doc);
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return QJsonObject();
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}
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QJsonObject json_obj = json_doc.object();
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if (json_obj.isEmpty()) {
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Error("Received empty Json object.", json_doc);
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return QJsonObject();
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}
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return json_obj;
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}
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QJsonValue DeezerCoverProvider::ExtractData(const QByteArray &data) {
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QJsonObject json_obj = ExtractJsonObj(data);
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if (json_obj.isEmpty()) return QJsonObject();
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if (json_obj.contains("error")) {
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QJsonValue value_error = json_obj["error"];
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if (!value_error.isObject()) {
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Error("Error missing object", json_obj);
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return QJsonValue();
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}
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QJsonObject obj_error = value_error.toObject();
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const int code = obj_error["code"].toInt();
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QString message = obj_error["message"].toString();
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QString type = obj_error["type"].toString();
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Error(QString("%1 (%2)").arg(message).arg(code));
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return QJsonValue();
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}
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if (!json_obj.contains("data") && !json_obj.contains("DATA")) {
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Error("Json reply object is missing data.", json_obj);
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return QJsonValue();
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}
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QJsonValue value_data;
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if (json_obj.contains("data")) value_data = json_obj["data"];
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else value_data = json_obj["DATA"];
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return value_data;
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}
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void DeezerCoverProvider::HandleSearchReply(QNetworkReply *reply, const int id) {
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reply->deleteLater();
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CoverSearchResults results;
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QByteArray data = GetReplyData(reply);
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if (data.isEmpty()) {
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emit SearchFinished(id, results);
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return;
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}
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QJsonValue value_data = ExtractData(data);
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if (!value_data.isArray()) {
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emit SearchFinished(id, results);
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return;
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}
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QJsonArray array_data = value_data.toArray();
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if (array_data.isEmpty()) {
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emit SearchFinished(id, results);
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return;
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}
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for (const QJsonValue &json_value : array_data) {
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if (!json_value.isObject()) {
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Error("Invalid Json reply, data array value is not a object.", json_value);
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continue;
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}
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QJsonObject json_obj = json_value.toObject();
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QJsonObject obj_album;
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if (json_obj.contains("album") && json_obj["album"].isObject()) { // Song search, so extract the album.
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obj_album = json_obj["album"].toObject();
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}
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else {
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obj_album = json_obj;
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}
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if (!json_obj.contains("id") || !obj_album.contains("id")) {
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Error("Invalid Json reply, data array value object is missing ID.", json_obj);
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continue;
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}
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if (!obj_album.contains("type")) {
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Error("Invalid Json reply, data array value album object is missing type.", obj_album);
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continue;
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}
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QString type = obj_album["type"].toString();
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if (type != "album") {
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Error("Invalid Json reply, data array value album object has incorrect type returned", obj_album);
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continue;
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}
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if (!json_obj.contains("artist")) {
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Error("Invalid Json reply, data array value object is missing artist.", json_obj);
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continue;
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}
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QJsonValue value_artist = json_obj["artist"];
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if (!value_artist.isObject()) {
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Error("Invalid Json reply, data array value artist is not a object.", value_artist);
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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("name")) {
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Error("Invalid Json reply, data array value artist object is missing name.", obj_artist);
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continue;
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}
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QString artist = obj_artist["name"].toString();
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if (!obj_album.contains("title")) {
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Error("Invalid Json reply, data array value album object is missing title.", obj_album);
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continue;
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}
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QString album = obj_album["title"].toString();
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QString cover;
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if (obj_album.contains("cover_xl")) {
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cover = obj_album["cover_xl"].toString();
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}
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else if (obj_album.contains("cover_big")) {
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cover = obj_album["cover_big"].toString();
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}
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else if (obj_album.contains("cover_medium")) {
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cover = obj_album["cover_medium"].toString();
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}
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else if (obj_album.contains("cover_small")) {
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cover = obj_album["cover_small"].toString();
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}
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else {
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Error("Invalid Json reply, data array value album object is missing cover.", obj_album);
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continue;
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}
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QUrl url(cover);
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album.remove(Song::kAlbumRemoveDisc);
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album.remove(Song::kAlbumRemoveMisc);
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CoverSearchResult cover_result;
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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 << cover_result;
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}
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emit SearchFinished(id, results);
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}
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void DeezerCoverProvider::Error(const QString &error, const QVariant &debug) {
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qLog(Error) << "Deezer:" << error;
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if (debug.isValid()) qLog(Debug) << debug;
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}
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