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	diff --git a/src/kazv-io-job.cpp b/src/kazv-io-job.cpp
	index ee675ff..0d75e31 100644
	--- a/src/kazv-io-job.cpp
	+++ b/src/kazv-io-job.cpp
	@@ -1,353 +1,357 @@
	/*
	* This file is part of kazv.
	* SPDX-FileCopyrightText: 2022-2023 nannanko <nannanko@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/

	#include <kazv-defs.hpp>
	#include "kazv-io-job.hpp"
	#include "matrix-room.hpp"
	#include "kazv-log.hpp"

	#include <QObject>
	#include <QPointer>
	#include <QSharedPointer>
	#include <QSaveFile>
	#include <QFile>
	#include <QString>
	#include <QMimeDatabase>
	#include <QCryptographicHash>
	#include <QLoggingCategory>

	#include <KJob>
	#include <KIO/TransferJob>

	#include <nlohmann/json.hpp>

	#include <optional>
	#include <string>

	using namespace Qt::Literals::StringLiterals;

	struct KazvIOBaseJobPrivate
	{
	QPointer<KIO::TransferJob> job;
	std::optional<KazvIOBaseJob::ErrorCode> result = std::nullopt;
	std::optional<Kazv::AES256CTRDesc> aes = std::nullopt;
	};

	KazvIOBaseJob::KazvIOBaseJob(std::optional<Kazv::AES256CTRDesc> aes, QObject *parent)
	: QObject(parent)
	, m_d(new KazvIOBaseJobPrivate)
	{
	/**
	* For unknown reasons, if a new AES256CTRDesc is not constructed here,
	* it will cause the program to crash.
	*/
	if (aes != std::nullopt) {
	m_d->aes = Kazv::AES256CTRDesc{aes.value().key(), aes.value().iv()};
	}
	// m_d->aes = aes;
	connect(this, &KazvIOBaseJob::jobChanged, this, &KazvIOBaseJob::connectJob);
	}

	KazvIOBaseJob::~KazvIOBaseJob() = default;

	float KazvIOBaseJob::progress() {
	if (m_d->job.isNull()) {
	return 0;
	}
	return static_cast<float>(m_d->job->percent()) / 100;
	}

	void KazvIOBaseJob::suspend()
	{
	if (m_d->job.isNull()) {
	emitResult(KazvError);
	return;
	}
	m_d->job->suspend();
	}

	void KazvIOBaseJob::resume()
	{
	if (m_d->job.isNull()) {
	emitResult(KazvError);
	return;
	}
	m_d->job->resume();
	}

	void KazvIOBaseJob::cancel()
	{
	if (m_d->job.isNull()) {
	emitResult(KazvError);
	return;
	}
	emitResult(UserCancel);
	m_d->job->kill();
	}

	bool KazvIOBaseJob::isSuspended()
	{
	if (m_d->job.isNull()) {
	return false;
	}
	return m_d->job->isSuspended();
	}

	bool KazvIOBaseJob::isResulted()
	{
	return m_d->result.has_value();
	}

	KazvIOBaseJob::ErrorCode KazvIOBaseJob::error()
	{
	if (m_d->result.has_value()) {
	return m_d->result.value();
	}
	// Shouldn't call this function before result are emited
	return NoError;
	}

	void KazvIOBaseJob::connectJob()
	{
	connect(m_d->job, &KJob::result, this, [this](KJob *job) {
	if (job->error()) {
	emitResult(KIOError);
	}
	});
	connect(m_d->job, &KJob::percentChanged, this,
	[this](KJob * /* job /, unsigned long / percent */) { Q_EMIT progressChanged(); });
	}

	QPointer<KIO::TransferJob> KazvIOBaseJob::job()
	{
	return m_d->job;
	}

	void KazvIOBaseJob::setJob(QPointer<KIO::TransferJob> job)
	{
	m_d->job = job;
	Q_EMIT jobChanged();
	}

	void KazvIOBaseJob::emitResult(ErrorCode ec, QString data)
	{
	if (m_d->result.has_value()) {
	return;
	}
	m_d->result = ec;
	Q_EMIT result(m_d->result.value(), data);
	}

	std::optional<Kazv::AES256CTRDesc> KazvIOBaseJob::aes()
	{
	return m_d->aes;
	}

	void KazvIOBaseJob::setAes(Kazv::AES256CTRDesc aes)
	{
	m_d->aes = aes;
	}

	struct KazvIODownloadJobPrivate
	{
	QSharedPointer<KazvSaveFile> file;
	QString hash;
	};

	KazvIODownloadJob::KazvIODownloadJob(const QString &hash, std::optional<Kazv::AES256CTRDesc> aes, QObject *parent)
	: KazvIOBaseJob(aes, parent)
	, m_d(new KazvIODownloadJobPrivate)
	{
	m_d->hash = hash;
	}

	-KazvIODownloadJob::KazvIODownloadJob(const QString &fileName, const QUrl &serverUrl,
	+KazvIODownloadJob::KazvIODownloadJob(const QString &fileName, const QUrl &serverUrl, bool showProgressBar,
	const QString &hash, std::optional<Kazv::AES256CTRDesc> aes, QObject *parent)
	: KazvIOBaseJob(aes, parent)
	, m_d(new KazvIODownloadJobPrivate)
	{
	if (setFile(fileName)) {
	- setJob(KIO::get(serverUrl));
	+ auto flag = showProgressBar ? KIO::DefaultFlags : KIO::HideProgressInfo;
	+ setJob(KIO::get(serverUrl, KIO::NoReload, flag));
	}
	m_d->hash = hash;
	}

	KazvIODownloadJob::~KazvIODownloadJob() = default;

	QString KazvIODownloadJob::fileName() {
	if (m_d->file.isNull()) {
	return QStringLiteral("");
	}
	return m_d->file->fileName();
	}

	void KazvIODownloadJob::connectJob()
	{
	KazvIOBaseJob::connectJob();
	connect(this->job(), &KIO::TransferJob::data, this, &KazvIODownloadJob::writeFile);
	connect(this->job(), &KJob::result, this, &KazvIODownloadJob::closeFile);
	}

	bool KazvIODownloadJob::setFile(QString fileName)
	{
	m_d->file.reset(new KazvSaveFile(fileName, this->aes()));
	if (m_d->file->open(QIODevice::WriteOnly)) {
	return true;
	}
	emitResult(KazvIOBaseJob::OpenFileError);
	return false;
	}

	void KazvIODownloadJob::writeFile(KJob *job, const QByteArray &data)
	{
	if (m_d->file.isNull() \|\| !m_d->file->isOpen()) {
	emitResult(KazvError);
	job->kill();
	return;
	}
	auto len = m_d->file->write(data);
	if (len == -1) {
	KazvIOBaseJob::emitResult(WriteFileError);
	job->kill();
	}
	}

	void KazvIODownloadJob::closeFile(KJob *job)
	{
	if (m_d->file.isNull()) {
	emitResult(KazvError);
	return;
	}
	if (job->error()) {
	m_d->file->cancelWriting();
	return;
	}
	if (!m_d->hash.isEmpty() && QString::fromUtf8(m_d->file->hash()) != m_d->hash) {
	emitResult(HashError);
	return;
	}
	m_d->file->commit();
	emitResult(NoError);
	}

	struct KazvIOUploadJobPrivate
	{
	QSharedPointer<KazvFile> file;
	QString response;
	QSharedPointer<MatrixRoom> room;
	QString mimeType;
	QString mxcUri;
	QString relType;
	QString relatedTo;
	};

	KazvIOUploadJob::KazvIOUploadJob(std::optional<Kazv::AES256CTRDesc> aes,
	const QString &relType, const QString &relatedTo, QObject *parent)
	: KazvIOBaseJob(aes, parent)
	, m_d(new KazvIOUploadJobPrivate)
	{
	m_d->relType = relType;
	m_d->relatedTo = relatedTo;
	}

	KazvIOUploadJob::KazvIOUploadJob(const QString fileName, const QUrl serverUrl,
	- MatrixRoomList *roomList, const QString &roomId, const QString token,
	- std::optional<Kazv::AES256CTRDesc> aes,
	+ const bool showProgressBar, MatrixRoomList *roomList, const QString &roomId,
	+ const QString token, std::optional<Kazv::AES256CTRDesc> aes,
	const QString &relType, const QString &relatedTo, QObject *parent)
	: KazvIOBaseJob(aes, parent)
	, m_d(new KazvIOUploadJobPrivate)
	{
	m_d->relType = relType;
	m_d->relatedTo = relatedTo;
	if (setFile(fileName)) {
	auto kazvUploadJob = Kazv::Api::UploadContentJob(serverUrl.toString().toStdString(),
	token.toStdString(), Kazv::FileDesc(std::string()));
	- auto job = KIO::http_post(QUrl(QString::fromStdString(kazvUploadJob.url())), m_d->file.data());
	+ auto jobFlag = showProgressBar ? KIO::DefaultFlags : KIO::HideProgressInfo;
	+ auto job = KIO::http_post(
	+ QUrl(QString::fromStdString(kazvUploadJob.url())),
	+ m_d->file.data(), jobFlag);
	job->addMetaData(u"customHTTPHeader"_s, QStringLiteral("Authorization: ")
	.append(QString::fromStdString(kazvUploadJob.requestHeader()->at("Authorization"))));
	job->addMetaData(u"PropagateHttpHeader"_s, u"true"_s);
	setJob(job);
	if (roomList) {
	m_d->room.reset(roomList->room(roomId));
	}
	}
	}

	KazvIOUploadJob::~KazvIOUploadJob() = default;

	QString KazvIOUploadJob::fileName()
	{
	if (m_d->file.isNull()) {
	return QStringLiteral("");
	}
	return m_d->file->fileName();
	}

	void KazvIOUploadJob::connectJob()
	{
	KazvIOBaseJob::connectJob();
	connect(this->job(), &KIO::TransferJob::data, this,
	[this](KJob * /* job */, const QByteArray &data) { m_d->response.append(QString::fromUtf8(data)); });
	connect(this->job(), &KJob::result, this, &KazvIOUploadJob::handleResult);
	connect(this->job(), &KIO::TransferJob::mimeTypeFound, this,
	[this](KJob * /* job */, const QString &mimeType) { m_d->mimeType = mimeType; });
	}

	void KazvIOUploadJob::handleResult(KJob *job)
	{
	if (m_d->file.isNull()) {
	emitResult(KazvError);
	return;
	}
	m_d->file->close();
	if (job->error()) {
	return;
	}

	nlohmann::json j;
	try {
	j = nlohmann::json::parse(m_d->response.toStdString());
	} catch(...) {
	emitResult(ResponseError);
	qCWarning(kazvLog) << "Get a invaild response from server.";
	return;
	}
	QString mxcUri{};
	if (j.contains("content_uri") && j["content_uri"].is_string()) {
	mxcUri = QString::fromStdString(j["content_uri"].template get<std::string>());
	} else {
	emitResult(ResponseError);
	qCWarning(kazvLog) << "There is no \"content_uri\" field in response.";
	return;
	}
	auto shouldSendMessage = !!m_d->room;
	if (shouldSendMessage) {
	auto aes = this->aes();
	if (aes.has_value()) {
	m_d->room->sendEncryptedFileMessage(QUrl::fromLocalFile(m_d->file->fileName()).fileName(),
	QMimeDatabase().mimeTypeForFile(m_d->file.data()->fileName()).name(),
	m_d->file->size(), mxcUri,
	QString::fromStdString(aes.value().key()), QString::fromStdString(aes.value().iv()),
	m_d->file->hash(), m_d->relType, m_d->relatedTo);
	} else {
	m_d->room->sendMediaFileMessage(QUrl::fromLocalFile(m_d->file->fileName()).fileName(),
	QMimeDatabase().mimeTypeForData(m_d->file.data()).name(),
	m_d->file->size(), mxcUri, m_d->relType, m_d->relatedTo);
	}
	}

	KazvIOBaseJob::emitResult(NoError, mxcUri);
	}

	bool KazvIOUploadJob::setFile(const QString fileName)
	{
	m_d->file.reset(new KazvFile(fileName, this->aes()));
	if (m_d->file->open(QIODevice::ReadOnly)) {
	return true;
	}
	emitResult(KazvIOBaseJob::OpenFileError);
	return false;
	}
	diff --git a/src/kazv-io-job.hpp b/src/kazv-io-job.hpp
	index bb42234..a9a374e 100644
	--- a/src/kazv-io-job.hpp
	+++ b/src/kazv-io-job.hpp
	@@ -1,164 +1,165 @@
	/*
	* This file is part of kazv.
	* SPDX-FileCopyrightText: 2022-2023 nannanko <nannanko@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/

	#pragma once
	#include <kazv-defs.hpp>
	#include "matrix-room.hpp"
	#include "matrix-room-list.hpp"
	#include "kazv-file.hpp"

	#include <aes-256-ctr.hpp>

	#include <QObject>
	#include <QPointer>
	#include <QString>
	#include <QUrl>

	#include <KIO/TransferJob>

	#include <memory>
	#include <optional>

	struct KazvIOBaseJobPrivate;

	class KazvIOBaseJob : public QObject
	{
	Q_OBJECT
	QML_ELEMENT
	QML_UNCREATABLE("")

	Q_PROPERTY(float progress READ progress NOTIFY progressChanged)

	std::unique_ptr<KazvIOBaseJobPrivate> m_d;

	public:
	enum ErrorCode {
	/**
	* No Error or the signal result has not been emitted yet.
	*/
	NoError = 0,
	/**
	* The user actively canceled the job.
	*/
	UserCancel,
	/**
	* Open File Error.
	*/
	OpenFileError,
	/**
	* Write File Error
	*/
	WriteFileError,
	/**
	* Errors caused by KIO, such network error.
	*/
	KIOError,
	/**
	* Error caused by hash error
	*/
	HashError,
	/**
	* Error caused by invalid response.
	* KIO reported no error, but got an invalid JSON response.
	*/
	ResponseError,
	/**
	* Errors caused by bad code, means the bug is somewhere.
	*/
	KazvError
	};
	Q_ENUM(ErrorCode)

	KazvIOBaseJob(std::optional<Kazv::AES256CTRDesc> aes = std::nullopt, QObject *parent = 0);
	~KazvIOBaseJob();

	float progress();

	Q_INVOKABLE void suspend();
	Q_INVOKABLE void resume();
	Q_INVOKABLE void cancel();
	Q_INVOKABLE bool isSuspended();
	Q_INVOKABLE bool isResulted();
	/**
	* Only use it after emitted the result signal
	*/
	Q_INVOKABLE ErrorCode error();

	Q_SIGNALS:
	void jobChanged();
	void progressChanged();
	/**
	* @param data the mxcUri if this is an upload job.
	*/
	void result(ErrorCode ec, QString data);

	protected Q_SLOTS:
	virtual void connectJob();

	protected:
	QPointer<KIO::TransferJob> job();
	void setJob(QPointer<KIO::TransferJob> job);
	std::optional<Kazv::AES256CTRDesc> aes();
	void setAes(Kazv::AES256CTRDesc);

	void emitResult(ErrorCode ec, QString data = QString());
	};

	struct KazvIODownloadJobPrivate;

	class KazvIODownloadJob : public KazvIOBaseJob
	{
	Q_OBJECT

	std::unique_ptr<KazvIODownloadJobPrivate> m_d;

	bool setFile(QString fileName);

	public:
	KazvIODownloadJob(const QString &hash, std::optional<Kazv::AES256CTRDesc> aes = std::nullopt, QObject *parent = 0);
	- KazvIODownloadJob(const QString &fileName, const QUrl &serverUrl, const QString &hash,
	+ KazvIODownloadJob(const QString &fileName, const QUrl &serverUrl, const bool showProgressBar, const QString &hash,
	std::optional<Kazv::AES256CTRDesc> aes = std::nullopt, QObject *parent = 0);
	~KazvIODownloadJob();

	Q_INVOKABLE QString fileName();

	private Q_SLOTS:
	void writeFile(KJob *job, const QByteArray &data);
	void closeFile(KJob *job);

	protected Q_SLOTS:
	void connectJob() override;
	};

	struct KazvIOUploadJobPrivate;

	class KazvIOUploadJob : public KazvIOBaseJob
	{
	Q_OBJECT

	std::unique_ptr<KazvIOUploadJobPrivate> m_d;

	bool setFile(const QString fileName);

	public:
	KazvIOUploadJob(std::optional<Kazv::AES256CTRDesc> aes = std::nullopt,
	const QString &relType = QStringLiteral(""),
	const QString &relatedTo = QStringLiteral(""), QObject *parent = 0);
	- KazvIOUploadJob(const QString fileName, const QUrl serverUrl, MatrixRoomList *roomList,
	+ KazvIOUploadJob(const QString fileName, const QUrl serverUrl,
	+ const bool showProgressBar, MatrixRoomList *roomList,
	const QString &roomId, const QString token,
	std::optional<Kazv::AES256CTRDesc> aes = std::nullopt,
	const QString &relType = QStringLiteral(""),
	const QString &relatedTo = QStringLiteral(""), QObject *parent = 0);
	~KazvIOUploadJob();

	Q_INVOKABLE QString fileName();

	private Q_SLOTS:
	void handleResult(KJob *job);

	protected Q_SLOTS:
	void connectJob() override;
	};
	diff --git a/src/kazv-io-manager.cpp b/src/kazv-io-manager.cpp
	index 328a839..0e6f5cc 100644
	--- a/src/kazv-io-manager.cpp
	+++ b/src/kazv-io-manager.cpp
	@@ -1,223 +1,229 @@
	/*
	* This file is part of kazv.
	* SPDX-FileCopyrightText: 2022-2023 nannanko <nannanko@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/

	#include <kazv-defs.hpp>
	#include "kazv-io-manager.hpp"
	#include "kazv-io-job.hpp"
	#include "matrix-room.hpp"
	#include "upload-job-model.hpp"
	#include "qt-rand-adapter.hpp"

	#include <api/csapi/content-repo.hpp>
	#include <file-desc.hpp>

	#include <QObject>
	#include <QIODevice>
	#include <QFile>
	#include <QSaveFile>
	#include <QPointer>
	#include <QSharedPointer>
	#include <QUrl>
	#include <QMap>
	#include <QMultiMap>
	#include <QTemporaryDir>

	#include <string>
	#include <algorithm>

	using namespace Qt::Literals::StringLiterals;

	static const QString ROOMLESS = QStringLiteral("not-a-room");

	struct KazvIOManagerPrivate
	{
	/**
	* Used to store various temporary files.
	* If the user does not specify a cache directory,
	* this directory is also used as a cache directory.
	*/
	QTemporaryDir tmpDir = QTemporaryDir{};
	/**
	* Stores files that need to be previewed (e.g. in a timeline)
	* and are not downloaded by the user, such as images, audio, video covers, and videos.
	*/
	QDir cacheDir{tmpDir.path()};
	Kazv::RandomInterface randomGenerator = QtRandAdapter{};
	QMap<QString, QPointer<KazvIODownloadJob>> cacheJobs;
	QMap<QString, QSharedPointer<KazvIODownloadJob>> downloadJobs;
	QMap<QString, QSharedPointer<UploadJobModel>> uploadJobs;
	};

	KazvIOManager::KazvIOManager(QObject *parent)
	: QObject(parent)
	, m_d(new KazvIOManagerPrivate)
	{
	}

	KazvIOManager::~KazvIOManager() = default;

	QPointer<KazvIODownloadJob> KazvIOManager::makeDownloadJob(
	- const QUrl &serverUrl, const QUrl &localFileUrl, const QString &hash,
	+ const QUrl &serverUrl, const QUrl &localFileUrl,
	+ const bool showPrograssBar, const QString &hash,
	const QString &key, const QString &iv) const
	{
	QPointer<KazvIODownloadJob> job{};
	if (key.isEmpty()) {
	- job = new KazvIODownloadJob{localFileUrl.toLocalFile(), serverUrl, hash, std::nullopt};
	+ job = new KazvIODownloadJob{localFileUrl.toLocalFile(),
	+ serverUrl, showPrograssBar, hash, std::nullopt};
	} else {
	auto aes = Kazv::AES256CTRDesc{key.toStdString(), iv.toStdString()};
	- job = new KazvIODownloadJob{localFileUrl.toLocalFile(), serverUrl, hash, aes};
	+ job = new KazvIODownloadJob{localFileUrl.toLocalFile(),
	+ serverUrl, showPrograssBar, hash, aes};
	}
	return job;
	}

	QUrl KazvIOManager::cacheFile(const QUrl &fileUrl, const QString &id, const QString &hash,
	const QString &key, const QString &iv)
	{
	const QString filePath = m_d->cacheDir.filePath(id);
	QDir dir(m_d->cacheDir.path());
	if (!dir.exists(id) && this->getCacheJob(id) == nullptr) {
	- auto job = this->makeDownloadJob(fileUrl, QUrl::fromLocalFile(filePath), hash, key, iv);
	+ auto job = this->makeDownloadJob(fileUrl,
	+ QUrl::fromLocalFile(filePath),
	+ /* showProgressBar = */ false, hash, key, iv);
	m_d->cacheJobs[id] = job;
	connect(job, &KazvIOBaseJob::result, this, [this, id](auto /* result */) {
	m_d->cacheJobs[id]->deleteLater();
	m_d->cacheJobs.remove(id);
	});
	}
	return QUrl::fromLocalFile(filePath);
	}

	KazvIOBaseJob *KazvIOManager::startNewDownloadJob(const QUrl &serverUrl, const QUrl &localFileUrl,
	const QString &jobId, const QString &hash, const QString &key, const QString &iv)
	{
	- auto downloadJob = this->makeDownloadJob(serverUrl, localFileUrl, hash, key, iv);
	+ auto downloadJob = this->makeDownloadJob(serverUrl, localFileUrl,
	+ /* showProgressBar = */ true, hash, key, iv);

	m_d->downloadJobs[jobId].reset(downloadJob);
	QQmlEngine::setObjectOwnership(downloadJob.data(), QQmlEngine::CppOwnership);
	return downloadJob.data();
	}

	KazvIOBaseJob *KazvIOManager::startNewUploadJob(
	const QUrl &serverUrl, const QUrl &localFileUrl, const QString &token,
	const QString &roomId, MatrixRoomList *roomList, const bool encrypted,
	const QString &relType, const QString &relatedTo)
	{
	auto uploadJob = QPointer<KazvIOUploadJob>();
	if (encrypted) {
	auto aes = Kazv::AES256CTRDesc::fromRandom(
	m_d->randomGenerator.generateRange<Kazv::RandomData>(Kazv::AES256CTRDesc::randomSize));
	uploadJob = new KazvIOUploadJob(localFileUrl.toLocalFile(), serverUrl,
	- roomList, roomId, token, aes, relType, relatedTo);
	+ /* showProgressBar = */ true, roomList, roomId, token, aes, relType, relatedTo);
	} else {
	uploadJob = new KazvIOUploadJob(localFileUrl.toLocalFile(), serverUrl,
	- roomList, roomId, token, std::nullopt, relType, relatedTo);
	+ /* showProgressBar = */ true, roomList, roomId, token, std::nullopt, relType, relatedTo);
	}
	if (!m_d->uploadJobs.contains(roomId) \|\| m_d->uploadJobs[roomId].isNull()) {
	m_d->uploadJobs[roomId].reset(new UploadJobModel());
	}
	m_d->uploadJobs[roomId]->addJob(uploadJob);
	QQmlEngine::setObjectOwnership(uploadJob.data(), QQmlEngine::CppOwnership);
	return uploadJob.data();
	}

	KazvIOBaseJob *KazvIOManager::startNewRoomlessUploadJob(const QUrl &serverUrl, const QUrl &localFileUrl, const QString &token)
	{
	return startNewUploadJob(
	serverUrl, localFileUrl, token, ROOMLESS, 0, false,
	QStringLiteral(""), QStringLiteral(""));
	}

	KazvIOBaseJob *KazvIOManager::getCacheJob(const QString &jobId) const
	{
	auto targetJob = m_d->cacheJobs.find(jobId);
	if (targetJob == m_d->cacheJobs.end()) {
	return nullptr;
	}
	QQmlEngine::setObjectOwnership(targetJob.value().data(), QQmlEngine::CppOwnership);
	return targetJob.value().data();
	}

	KazvIOBaseJob *KazvIOManager::getDownloadJob(const QString &jobId)
	{
	auto targetJob = m_d->downloadJobs.find(jobId);
	if (targetJob == m_d->downloadJobs.end()) {
	return nullptr;
	}
	QQmlEngine::setObjectOwnership(targetJob.value().data(), QQmlEngine::CppOwnership);
	return targetJob.value().data();
	}

	void KazvIOManager::deleteDownloadJob(const QString &jobId)
	{
	m_d->downloadJobs.remove(jobId);
	}

	UploadJobModel *KazvIOManager::getUploadJobs(const QString &roomId)
	{
	if (!m_d->uploadJobs.contains(roomId) \|\| m_d->uploadJobs[roomId].isNull()) {
	m_d->uploadJobs[roomId].reset(new UploadJobModel());
	}
	QQmlEngine::setObjectOwnership(m_d->uploadJobs[roomId].data(), QQmlEngine::CppOwnership);
	return m_d->uploadJobs[roomId].data();
	}

	void KazvIOManager::deleteUploadJob(const QString &roomId, KazvIOBaseJob *job)
	{
	m_d->uploadJobs[roomId]->removeJob(QPointer<KazvIOUploadJob>(qobject_cast<KazvIOUploadJob*>(job)));
	}

	void KazvIOManager::deleteRoomlessUploadJob(KazvIOBaseJob *job)
	{
	deleteUploadJob(ROOMLESS, job);
	}

	void KazvIOManager::deleteModelIfEmpty(const QString &roomId)
	{
	if (!m_d->uploadJobs.contains(roomId)) {
	return;
	}
	if (m_d->uploadJobs[roomId]->rowCount() == 0) {
	m_d->uploadJobs.remove(roomId);
	}
	}

	void KazvIOManager::clearJobs()
	{
	/**
	* KazvIOBaseJob::cancel() for cache jobs will remove itself from cacheJobs,
	* so iterators and loops for m_d->cacheJobs cannot be used reliably.
	*/
	for (auto key : m_d->cacheJobs.keys()) {
	m_d->cacheJobs[key]->cancel();
	}
	std::for_each(m_d->downloadJobs.begin(), m_d->downloadJobs.end(), [this](auto job){
	job->cancel();
	});
	std::for_each(m_d->uploadJobs.begin(), m_d->uploadJobs.end(), [this](auto room) {
	room->clearJobs();
	});
	m_d->downloadJobs.clear();
	m_d->uploadJobs.clear();
	}

	QString KazvIOManager::cacheDirectory() const
	{
	return m_d->cacheDir.path();
	}

	void KazvIOManager::setCacheDirectory(QString cacheDirectory)
	{
	if (cacheDirectory.isEmpty()) {
	m_d->cacheDir = QDir{m_d->tmpDir.path()};
	} else {
	auto cacheDir = QDir{QUrl{cacheDirectory}.toLocalFile()};
	if (!cacheDir.mkpath(u"."_s)) {
	return;
	}
	m_d->cacheDir = cacheDir;
	}
	m_d->downloadJobs.clear();
	Q_EMIT cacheDirectoryChanged();
	}
	diff --git a/src/kazv-io-manager.hpp b/src/kazv-io-manager.hpp
	index f0e6c4f..dead687 100644
	--- a/src/kazv-io-manager.hpp
	+++ b/src/kazv-io-manager.hpp
	@@ -1,73 +1,74 @@
	/*
	* This file is part of kazv.
	* SPDX-FileCopyrightText: 2022-2023 nannanko <nannanko@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/

	#pragma once
	#include <kazv-defs.hpp>
	#include "kazv-io-job.hpp"
	#include "matrix-room.hpp"
	#include "upload-job-model.hpp"
	#include "matrix-room-list.hpp"
	#include "matrix-sdk.hpp"

	#include <QObject>
	#include <QtQml>
	#include <QUrl>
	#include <QString>
	#include <KIO/TransferJob>
	#include <QPointer>

	#include <memory>

	struct KazvIOManagerPrivate;

	class KazvIOManager : public QObject
	{
	Q_OBJECT
	QML_ELEMENT

	std::unique_ptr<KazvIOManagerPrivate> m_d;

	Q_PROPERTY(QString cacheDirectory READ cacheDirectory WRITE setCacheDirectory NOTIFY cacheDirectoryChanged)

	QPointer<KazvIODownloadJob> makeDownloadJob(
	- const QUrl &serverUrl, const QUrl &localFileUrl, const QString &hash,
	+ const QUrl &serverUrl, const QUrl &localFileUrl,
	+ const bool showPrograssBar, const QString &hash,
	const QString &key = QStringLiteral(""),
	const QString &iv = QStringLiteral("")) const;

	public:
	explicit KazvIOManager(QObject *parent = 0);
	~KazvIOManager() override;

	/**
	* Cache the file specified by fileUrl into a temporary folder
	* Multiple calls do not repeat downloads
	* Returns the local url of the cached file.
	*/
	Q_INVOKABLE QUrl cacheFile(const QUrl &fileUrl, const QString &id, const QString &hash = QStringLiteral(""),
	const QString &key = QStringLiteral(""), const QString &iv = QStringLiteral(""));
	Q_INVOKABLE KazvIOBaseJob *startNewDownloadJob(const QUrl &serverUrl, const QUrl &localFileName,
	const QString &jobId, const QString &hash,
	const QString &key = QStringLiteral(""), const QString &iv = QStringLiteral(""));
	Q_INVOKABLE KazvIOBaseJob *startNewUploadJob(
	const QUrl &serverUrl, const QUrl &localFileName, const QString &token,
	const QString &roomId, MatrixRoomList *roomList, const bool encrypted,
	const QString &relType, const QString &relatedTo);
	Q_INVOKABLE KazvIOBaseJob *startNewRoomlessUploadJob(const QUrl &serverUrl, const QUrl &localFileName, const QString &token);
	Q_INVOKABLE KazvIOBaseJob *getCacheJob(const QString &jobId) const;
	Q_INVOKABLE KazvIOBaseJob *getDownloadJob(const QString &jobId);
	Q_INVOKABLE void deleteDownloadJob(const QString &jobId);
	Q_INVOKABLE UploadJobModel *getUploadJobs(const QString &roomId);
	Q_INVOKABLE void deleteUploadJob(const QString &roomId, KazvIOBaseJob *job);
	Q_INVOKABLE void deleteRoomlessUploadJob(KazvIOBaseJob *job);
	Q_INVOKABLE void deleteModelIfEmpty(const QString &roomId);
	Q_INVOKABLE void clearJobs();

	QString cacheDirectory() const;
	void setCacheDirectory(QString cacheDirectory);

	Q_SIGNALS:
	void cacheDirectoryChanged();
	};

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