Perform initial refactoring work

Things that were once singletons are no longer singletons, but are
instead stored in the "Application" singleton

Some singletons still remain, and some renaming/renamespacing is left

src/util/completionmodel.cpp

@@ -1,5 +1,6 @@
 #include "util/completionmodel.hpp"
 
+#include "application.hpp"
 #include "common.hpp"
 #include "debug/log.hpp"
 #include "singletons/emotemanager.hpp"
@@ -19,11 +20,11 @@ void CompletionModel::refresh()
 {
     debug::Log("[CompletionModel:{}] Refreshing...]", this->channelName);
 
-    auto &emoteManager = singletons::EmoteManager::getInstance();
+    auto app = getApp();
 
     // User-specific: Twitch Emotes
     // TODO: Fix this so it properly updates with the proper api. oauth token needs proper scope
-    for (const auto &m : emoteManager.twitchAccountEmotes) {
+    for (const auto &m : app->emotes->twitchAccountEmotes) {
         for (const auto &emoteName : m.second.emoteCodes) {
             // XXX: No way to discern between a twitch global emote and sub emote right now
             this->addString(emoteName, TaggedString::Type::TwitchGlobalEmote);
@@ -31,33 +32,33 @@ void CompletionModel::refresh()
     }
 
     // Global: BTTV Global Emotes
-    std::vector<std::string> &bttvGlobalEmoteCodes = emoteManager.bttvGlobalEmoteCodes;
+    std::vector<std::string> &bttvGlobalEmoteCodes = app->emotes->bttvGlobalEmoteCodes;
     for (const auto &m : bttvGlobalEmoteCodes) {
         this->addString(m, TaggedString::Type::BTTVGlobalEmote);
     }
 
     // Global: FFZ Global Emotes
-    std::vector<std::string> &ffzGlobalEmoteCodes = emoteManager.ffzGlobalEmoteCodes;
+    std::vector<std::string> &ffzGlobalEmoteCodes = app->emotes->ffzGlobalEmoteCodes;
     for (const auto &m : ffzGlobalEmoteCodes) {
         this->addString(m, TaggedString::Type::FFZGlobalEmote);
     }
 
     // Channel-specific: BTTV Channel Emotes
     std::vector<std::string> &bttvChannelEmoteCodes =
-        emoteManager.bttvChannelEmoteCodes[this->channelName.toStdString()];
+        app->emotes->bttvChannelEmoteCodes[this->channelName.toStdString()];
     for (const auto &m : bttvChannelEmoteCodes) {
         this->addString(m, TaggedString::Type::BTTVChannelEmote);
     }
 
     // Channel-specific: FFZ Channel Emotes
     std::vector<std::string> &ffzChannelEmoteCodes =
-        emoteManager.ffzChannelEmoteCodes[this->channelName.toStdString()];
+        app->emotes->ffzChannelEmoteCodes[this->channelName.toStdString()];
     for (const auto &m : ffzChannelEmoteCodes) {
         this->addString(m, TaggedString::Type::FFZChannelEmote);
     }
 
     // Global: Emojis
-    const auto &emojiShortCodes = emoteManager.emojiShortCodes;
+    const auto &emojiShortCodes = app->emotes->emojiShortCodes;
     for (const auto &m : emojiShortCodes) {
         this->addString(":" + m + ":", TaggedString::Type::Emoji);
     }

src/util/networkrequest.cpp

@@ -1,5 +1,7 @@
 #include "util/networkrequest.hpp"
 
+#include "application.hpp"
+
 namespace chatterino {
 namespace util {
 
@@ -26,9 +28,9 @@ void NetworkRequest::setUseQuickLoadCache(bool value)
 void NetworkRequest::Data::writeToCache(const QByteArray &bytes)
 {
     if (this->useQuickLoadCache) {
-        auto &pathManager = singletons::PathManager::getInstance();
+        auto app = getApp();
 
-        QFile cachedFile(pathManager.cacheFolderPath + "/" + this->getHash());
+        QFile cachedFile(app->paths->cacheFolderPath + "/" + this->getHash());
 
         if (cachedFile.open(QIODevice::WriteOnly)) {
             cachedFile.write(bytes);

src/util/networkrequest.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "application.hpp"
 #include "singletons/pathmanager.hpp"
 #include "util/networkmanager.hpp"
 #include "util/networkrequester.hpp"
@@ -125,9 +126,9 @@ public:
     void get(FinishedCallback onFinished)
     {
         if (this->data.useQuickLoadCache) {
-            auto &pathManager = singletons::PathManager::getInstance();
+            auto app = getApp();
 
-            QFile cachedFile(pathManager.cacheFolderPath + "/" + this->data.getHash());
+            QFile cachedFile(app->paths->cacheFolderPath + "/" + this->data.getHash());
 
             if (cachedFile.exists()) {
                 if (cachedFile.open(QIODevice::ReadOnly)) {

src/util/streamlink.cpp

@@ -1,4 +1,6 @@
 #include "util/streamlink.hpp"
+
+#include "application.hpp"
 #include "helpers.hpp"
 #include "singletons/settingsmanager.hpp"
 #include "widgets/qualitypopup.hpp"
@@ -50,9 +52,9 @@ bool CheckStreamlinkPath(const QString &path)
 // TODO: Make streamlink binary finder smarter
 QString GetStreamlinkBinaryPath()
 {
-    singletons::SettingManager &settings = singletons::SettingManager::getInstance();
+    auto app = getApp();
 
-    QString settingPath = settings.streamlinkPath;
+    QString settingPath = app->settings->streamlinkPath;
 
     QStringList paths;
     paths << settingPath;
@@ -111,15 +113,15 @@ void GetStreamQualities(const QString &channelURL, std::function<void(QStringLis
 
 void OpenStreamlink(const QString &channelURL, const QString &quality, QStringList extraArguments)
 {
-    singletons::SettingManager &settings = singletons::SettingManager::getInstance();
+    auto app = getApp();
 
     QString path = GetStreamlinkBinaryPath();
 
     QStringList arguments;
 
-    QString additionalOptions = settings.streamlinkOpts.getValue();
+    QString additionalOptions = app->settings->streamlinkOpts.getValue();
     if (!additionalOptions.isEmpty()) {
-        arguments << settings.streamlinkOpts;
+        arguments << app->settings->streamlinkOpts;
     }
 
     arguments.append(extraArguments);
@@ -135,11 +137,11 @@ void OpenStreamlink(const QString &channelURL, const QString &quality, QStringLi
 
 void Start(const QString &channel)
 {
+    auto app = getApp();
+
     QString channelURL = "twitch.tv/" + channel;
 
-    singletons::SettingManager &settings = singletons::SettingManager::getInstance();
-
-    QString preferredQuality = settings.preferredQuality;
+    QString preferredQuality = app->settings->preferredQuality;
     preferredQuality = preferredQuality.toLower();
 
     if (preferredQuality == "choose") {

src/util/urlfetch.hpp

@@ -100,8 +100,7 @@ static void put(QUrl url, std::function<void(QJsonObject)> successCallback)
 {
     QNetworkRequest request(url);
 
-    auto &accountManager = singletons::AccountManager::getInstance();
-    auto currentTwitchUser = accountManager.Twitch.getCurrent();
+    auto currentTwitchUser = getApp()->accounts->Twitch.getCurrent();
     QByteArray oauthToken;
     if (currentTwitchUser) {
         oauthToken = currentTwitchUser->getOAuthToken().toUtf8();
@@ -131,8 +130,7 @@ static void sendDelete(QUrl url, std::function<void()> successCallback)
 {
     QNetworkRequest request(url);
 
-    auto &accountManager = singletons::AccountManager::getInstance();
-    auto currentTwitchUser = accountManager.Twitch.getCurrent();
+    auto currentTwitchUser = getApp()->accounts->Twitch.getCurrent();
     QByteArray oauthToken;
     if (currentTwitchUser) {
         oauthToken = currentTwitchUser->getOAuthToken().toUtf8();