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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "util.h"
#include "paginatedresource.h"
#include "restaccessmanager.h"
#include <QtNetwork/qnetworkreply.h>
#include <QtCore/qurlquery.h>
#include <QtCore/qjsonobject.h>
#include <QtCore/qjsonarray.h>
using namespace Qt::StringLiterals;
static constexpr auto totalPagesField = "total_pages"_L1;
static constexpr auto currentPageField = "page"_L1;
static constexpr auto resourceIdentification = "/%1"_L1;
PaginatedResource::PaginatedResource(QObject* parent)
: AbstractResource(parent)
{
}
QList<QJsonObject> PaginatedResource::data() const
{
return m_data;
}
int PaginatedResource::pages() const
{
return m_pages;
}
int PaginatedResource::page() const
{
return m_currentPage;
}
void PaginatedResource::setPage(int page)
{
if (m_currentPage == page || page < 1)
return;
m_currentPage = page;
emit pageUpdated();
refreshCurrentPage();
}
void PaginatedResource::refreshCurrentPage()
{
RestAccessManager::ResponseCallback callback = [this](QNetworkReply* reply, bool success) {
if (success)
refreshRequestFinished(reply);
};
QUrlQuery query;
query.addQueryItem("page"_L1, QString::number(m_currentPage));
m_manager->get(m_path, query, callback);
}
void PaginatedResource::refreshRequestFinished(QNetworkReply* reply)
{
m_data.clear();
std::optional<QJsonObject> json = byteArrayToJsonObject(reply->readAll());
if (json) {
QJsonArray data = json->value("data"_L1).toArray();
for (const auto& entry : std::as_const(data))
m_data.append(entry.toObject());
m_pages = json->value(totalPagesField).toInt();
m_currentPage = json->value(currentPageField).toInt();
emit pageUpdated();
} else if (m_currentPage != 1) {
// An unexpected response. If we weren't on page 1, try that.
// Last resource on currentPage might have been deleted, causing a failure
m_pages = 0;
setPage(1);
}
emit dataUpdated();
}
void PaginatedResource::update(const QVariantMap& data, int id)
{
RestAccessManager::ResponseCallback callback = [this](QNetworkReply* reply, bool success) {
Q_UNUSED(reply);
if (success)
refreshCurrentPage();
};
m_manager->put(m_path + resourceIdentification.arg(QString::number(id)), data, callback);
}
void PaginatedResource::add(const QVariantMap& data)
{
RestAccessManager::ResponseCallback callback = [this](QNetworkReply* reply, bool success) {
Q_UNUSED(reply);
if (success)
refreshCurrentPage();
};
m_manager->post(m_path, data, callback);
}
void PaginatedResource::remove(int id)
{
RestAccessManager::ResponseCallback callback = [this](QNetworkReply* reply, bool success) {
Q_UNUSED(reply);
if (success)
refreshCurrentPage();
};
m_manager->deleteResource(m_path + resourceIdentification.arg(QString::number(id)), callback);
}
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