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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "../luaengine.h"
#include "../luaqttypes.h"
#include <utils/networkaccessmanager.h>
#include <QJsonArray>
#include <QJsonDocument>
#include <QNetworkAccessManager>
#include <QNetworkReply>
namespace Lua::Internal {
static QString opToString(QNetworkAccessManager::Operation op)
{
switch (op) {
case QNetworkAccessManager::HeadOperation:
return "HEAD";
case QNetworkAccessManager::GetOperation:
return "GET";
case QNetworkAccessManager::PutOperation:
return "PUT";
case QNetworkAccessManager::PostOperation:
return "POST";
case QNetworkAccessManager::DeleteOperation:
return "DELETE";
case QNetworkAccessManager::CustomOperation:
return "CUSTOM";
default:
return "UNKNOWN";
}
}
void addFetchModule()
{
LuaEngine::registerProvider(
"Fetch", [](sol::state_view lua) -> sol::object {
sol::table async = lua.script("return require('async')", "_fetch_").get<sol::table>();
sol::function wrap = async["wrap"];
sol::table fetch = lua.create_table();
auto networkReplyType = lua.new_usertype<QNetworkReply>(
"QNetworkReply",
"error",
sol::property([](QNetworkReply *self) -> int { return self->error(); }),
"readAll",
[](QNetworkReply *r) { return r->readAll().toStdString(); },
"__tostring",
[](QNetworkReply *r) {
return QString("QNetworkReply(%1 \"%2\") => %3")
.arg(opToString(r->operation()))
.arg(r->url().toString())
.arg(r->error());
});
fetch["fetch_cb"] = [](const sol::table &options,
const sol::function &callback,
const sol::this_state &thisState) {
auto url = options.get<QString>("url");
auto method = (options.get_or<QString>("method", "GET")).toLower();
auto headers = options.get_or<sol::table>("headers", {});
auto data = options.get_or<QString>("body", {});
bool convertToTable
= options.get<std::optional<bool>>("convertToTable").value_or(false);
QNetworkRequest request((QUrl(url)));
if (headers && !headers.empty()) {
for (const auto &[k, v] : headers)
request.setRawHeader(k.as<QString>().toUtf8(), v.as<QString>().toUtf8());
}
QNetworkReply *reply = nullptr;
if (method == "get")
reply = Utils::NetworkAccessManager::instance()->get(request);
else if (method == "post")
reply = Utils::NetworkAccessManager::instance()->post(request, data.toUtf8());
else
throw std::runtime_error("Unknown method: " + method.toStdString());
if (convertToTable) {
QObject::connect(
reply,
&QNetworkReply::finished,
&LuaEngine::instance(),
[reply, thisState, callback]() {
reply->deleteLater();
if (reply->error() != QNetworkReply::NoError) {
callback(
QString("%1 (%2)").arg(reply->errorString()).arg(reply->error()));
return;
}
QByteArray data = reply->readAll();
QJsonParseError error;
QJsonDocument doc = QJsonDocument::fromJson(data, &error);
if (error.error != QJsonParseError::NoError) {
callback(error.errorString());
return;
}
if (doc.isObject()) {
callback(LuaEngine::toTable(thisState, doc.object()));
} else if (doc.isArray()) {
callback(LuaEngine::toTable(thisState, doc.array()));
} else {
sol::state_view lua(thisState);
callback(lua.create_table());
}
});
} else {
QObject::connect(
reply, &QNetworkReply::finished, &LuaEngine::instance(), [reply, callback]() {
// We don't want the network reply to be deleted by the manager, but
// by the Lua GC
reply->setParent(nullptr);
callback(std::unique_ptr<QNetworkReply>(reply));
});
}
};
fetch["fetch"] = wrap(fetch["fetch_cb"]);
return fetch;
});
}
} // namespace Lua::Internal
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