refactor: Toast (#4899)

* Fixes a bug where avatars weren't loaded on fresh installations of Chatterino.
* Avatars now update every two weeks.
* Removes misleading `DownlaodManager` (now part of `Toasts.cpp`).
* Refactors usage of WinToast to be easier to read.
* Added version to AUMI.
* Removes manual `QString` → `std::wstring` conversions.
* Removes uses of implicit ASCII casts in `Toasts.cpp`, meaning it can be compiled with `QT_NO_CAST_FROM_ASCII`.

src/common/DownloadManager.cpp

@@ -1,83 +0,0 @@
-#include "DownloadManager.hpp"
-
-#include "common/QLogging.hpp"
-#include "singletons/Paths.hpp"
-
-#include <QDesktopServices>
-
-namespace chatterino {
-
-DownloadManager::DownloadManager(QObject *parent)
-    : QObject(parent)
-    , manager_(new QNetworkAccessManager)
-{
-}
-
-DownloadManager::~DownloadManager()
-{
-    this->manager_->deleteLater();
-}
-
-void DownloadManager::setFile(QString fileURL, const QString &channelName)
-{
-    QString saveFilePath;
-    saveFilePath =
-        getPaths()->twitchProfileAvatars + "/twitch/" + channelName + ".png";
-    QNetworkRequest request;
-    request.setUrl(QUrl(fileURL));
-    this->reply_ = this->manager_->get(request);
-
-    this->file_ = new QFile;
-    this->file_->setFileName(saveFilePath);
-    this->file_->open(QIODevice::WriteOnly);
-
-    connect(this->reply_, SIGNAL(downloadProgress(qint64, qint64)), this,
-            SLOT(onDownloadProgress(qint64, qint64)));
-    connect(this->manager_, SIGNAL(finished(QNetworkReply *)), this,
-            SLOT(onFinished(QNetworkReply *)));
-    connect(this->reply_, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
-    connect(this->reply_, SIGNAL(finished()), this, SLOT(onReplyFinished()));
-}
-
-void DownloadManager::onDownloadProgress(qint64 bytesRead, qint64 bytesTotal)
-{
-    qCDebug(chatterinoCommon)
-        << "Download progress: " << bytesRead << "/" << bytesTotal;
-}
-
-void DownloadManager::onFinished(QNetworkReply *reply)
-{
-    switch (reply->error())
-    {
-        case QNetworkReply::NoError: {
-            qCDebug(chatterinoCommon) << "file is downloaded successfully.";
-        }
-        break;
-        default: {
-            qCDebug(chatterinoCommon) << reply->errorString().toLatin1();
-        };
-    }
-
-    if (this->file_->isOpen())
-    {
-        this->file_->close();
-        this->file_->deleteLater();
-    }
-    emit downloadComplete();
-}
-
-void DownloadManager::onReadyRead()
-{
-    this->file_->write(this->reply_->readAll());
-}
-
-void DownloadManager::onReplyFinished()
-{
-    if (this->file_->isOpen())
-    {
-        this->file_->close();
-        this->file_->deleteLater();
-    }
-}
-
-}  // namespace chatterino

src/common/DownloadManager.hpp

@@ -1,33 +0,0 @@
-#pragma once
-
-#include <QFile>
-#include <QNetworkAccessManager>
-#include <QNetworkReply>
-#include <QObject>
-
-namespace chatterino {
-
-class DownloadManager : public QObject
-{
-    Q_OBJECT
-public:
-    explicit DownloadManager(QObject *parent = nullptr);
-    virtual ~DownloadManager();
-    void setFile(QString fileURL, const QString &channelName);
-
-private:
-    QNetworkAccessManager *manager_;
-    QNetworkReply *reply_{};
-    QFile *file_{};
-
-private slots:
-    void onDownloadProgress(qint64, qint64);
-    void onFinished(QNetworkReply *);
-    void onReadyRead();
-    void onReplyFinished();
-
-signals:
-    void downloadComplete();
-};
-
-}  // namespace chatterino