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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once
#include <QCoreApplication>
#include <QFuture>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QLoggingCategory>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QPromise>
#include <QString>
#include <utils/appinfo.h>
#include <utils/mimeconstants.h>
static Q_LOGGING_CATEGORY(apiLog, "qtc.compilerexplorer.api", QtWarningMsg);
namespace CompilerExplorer::Api {
static inline QString toString(QNetworkAccessManager::Operation op)
{
switch (op) {
case QNetworkAccessManager::GetOperation:
return QStringLiteral("GET");
case QNetworkAccessManager::PostOperation:
return QStringLiteral("POST");
case QNetworkAccessManager::PutOperation:
return QStringLiteral("PUT");
case QNetworkAccessManager::DeleteOperation:
return QStringLiteral("DELETE");
case QNetworkAccessManager::HeadOperation:
return QStringLiteral("HEAD");
case QNetworkAccessManager::CustomOperation:
return QStringLiteral("CUSTOM");
case QNetworkAccessManager::UnknownOperation:
break;
}
return "<unknown>";
}
static int debugRequestId = 0;
template<typename Result>
QFuture<Result> request(
QNetworkAccessManager *networkManager,
QNetworkRequest &req,
std::function<void(const QByteArray &, std::shared_ptr<QPromise<Result>>)> callback,
QNetworkAccessManager::Operation op = QNetworkAccessManager::GetOperation,
const QByteArray &payload = {})
{
static const QByteArray userAgent = QString("%1/%2 (%3)")
.arg(QCoreApplication::applicationName())
.arg(QCoreApplication::applicationVersion())
.arg(Utils::appInfo().author)
.toUtf8();
req.setRawHeader("User-Agent", userAgent);
std::shared_ptr<QPromise<Result>> p(new QPromise<Result>);
p->start();
// For logging purposes only
debugRequestId += 1;
const auto reqId = [r = debugRequestId] { return QString("[%1]").arg(r); };
if (payload.isEmpty())
qCDebug(apiLog).noquote() << reqId() << "Requesting" << toString(op)
<< req.url().toString();
else
qCDebug(apiLog).noquote() << reqId() << "Requesting" << toString(op) << req.url().toString()
<< "with payload:" << QString::fromUtf8(payload);
QNetworkReply *reply = nullptr;
switch (op) {
case QNetworkAccessManager::GetOperation:
reply = networkManager->get(req);
break;
case QNetworkAccessManager::PostOperation:
reply = networkManager->post(req, payload);
break;
case QNetworkAccessManager::PutOperation:
reply = networkManager->put(req, payload);
break;
case QNetworkAccessManager::DeleteOperation:
reply = networkManager->deleteResource(req);
break;
default:
return QtFuture::makeExceptionalFuture<Result>(
std::make_exception_ptr(std::runtime_error("Unsupported operation")));
}
QObject::connect(reply, &QNetworkReply::finished, [p, reply, callback, reqId] {
if (reply->error() != QNetworkReply::NoError) {
qCWarning(apiLog).noquote()
<< reqId() << "Request failed:" << reply->error() << reply->errorString();
QString errorMessage;
if (reply->error() == QNetworkReply::ContentNotFoundError) {
errorMessage = QCoreApplication::translate("QtC::CompilerExplorer", "Not found");
} else
errorMessage = reply->errorString();
p->setException(std::make_exception_ptr(std::runtime_error(errorMessage.toUtf8())));
reply->deleteLater();
p->finish();
return;
}
QByteArray data = reply->readAll();
qCDebug(apiLog).noquote() << reqId() << "Request finished:" << data;
callback(data, p);
reply->deleteLater();
p->finish();
});
return p->future();
}
template<typename Result>
QFuture<Result> jsonRequest(QNetworkAccessManager *networkManager,
const QUrl &url,
std::function<Result(QJsonDocument)> callback,
QNetworkAccessManager::Operation op
= QNetworkAccessManager::GetOperation,
const QByteArray &payload = {})
{
QNetworkRequest req(url);
req.setHeader(QNetworkRequest::ContentTypeHeader, Utils::Constants::JSON_MIMETYPE);
req.setRawHeader("Accept", Utils::Constants::JSON_MIMETYPE);
return request<Result>(
networkManager,
req,
[callback](const QByteArray &reply, auto promise) {
QJsonParseError error;
QJsonDocument doc = QJsonDocument::fromJson(reply, &error);
if (error.error != QJsonParseError::NoError) {
promise->setException(
std::make_exception_ptr(std::runtime_error(error.errorString().toUtf8())));
return;
}
promise->addResult(callback(doc));
},
op,
payload);
}
} // namespace CompilerExplorer::Api
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