Offline mode support, part 1

Refactor MojangAccount so it exposes a less generic interface and supports login. Hide the ugly details.
Yggdrasil tasks are now only used from MojangAccount.

15 files changed, 241 insertions, 296 deletions

diff --git a/logic/LegacyInstance.cpp b/logic/LegacyInstance.cpp
index 72b6c51a..decfd39d 100644
--- a/logic/LegacyInstance.cpp
+++ b/logic/LegacyInstance.cpp
@@ -105,7 +105,7 @@ MinecraftProcess *LegacyInstance::prepareForLaunch(MojangAccountPtr account)
 #endif
 
 		args << "-jar" << LAUNCHER_FILE;
-		args << account->currentProfile()->name();
+		args << account->currentProfile()->name;
 		args << account->sessionId();
 		args << windowTitle;
 		args << windowSize;
diff --git a/logic/MinecraftProcess.cpp b/logic/MinecraftProcess.cpp
index 5d99bfae..209929b7 100644
--- a/logic/MinecraftProcess.cpp
+++ b/logic/MinecraftProcess.cpp
@@ -75,20 +75,22 @@ QString MinecraftProcess::censorPrivateInfo(QString in)
 {
 	if(!m_account)
 		return in;
-	else
+
+	QString sessionId = m_account->sessionId();
+	QString accessToken = m_account->accessToken();
+	QString clientToken = m_account->clientToken();
+	in.replace(sessionId, "<SESSION ID>");
+	in.replace(accessToken, "<ACCESS TOKEN>");
+	in.replace(clientToken, "<CLIENT TOKEN>");
+	auto profile = m_account->currentProfile();
+	if(profile)
 	{
-		QString sessionId = m_account->sessionId();
-		QString accessToken = m_account->accessToken();
-		QString clientToken = m_account->clientToken();
-		QString profileId = m_account->currentProfile()->id();
-		QString profileName = m_account->currentProfile()->name();
-		in.replace(sessionId, "<SESSION ID>");
-		in.replace(accessToken, "<ACCESS TOKEN>");
-		in.replace(clientToken, "<CLIENT TOKEN>");
+		QString profileId = profile->id;
+		QString profileName = profile->name;
 		in.replace(profileId, "<PROFILE ID>");
 		in.replace(profileName, "<PROFILE NAME>");
-		return in;
 	}
+	return in;
 }
 
 // console window
diff --git a/logic/OneSixInstance.cpp b/logic/OneSixInstance.cpp
index 08b63bf9..5362e894 100644
--- a/logic/OneSixInstance.cpp
+++ b/logic/OneSixInstance.cpp
@@ -77,8 +77,8 @@ QStringList OneSixInstance::processMinecraftArgs(MojangAccountPtr account)
 	token_mapping["auth_username"] = account->username();
 	token_mapping["auth_session"] = account->sessionId();
 	token_mapping["auth_access_token"] = account->accessToken();
-	token_mapping["auth_player_name"] = account->currentProfile()->name();
-	token_mapping["auth_uuid"] = account->currentProfile()->id();
+	token_mapping["auth_player_name"] = account->currentProfile()->name;
+	token_mapping["auth_uuid"] = account->currentProfile()->id;
 
 	// this is for offline?:
 	/*
diff --git a/logic/auth/MojangAccount.cpp b/logic/auth/MojangAccount.cpp
index 4a61cf19..9ab71077 100644
--- a/logic/auth/MojangAccount.cpp
+++ b/logic/auth/MojangAccount.cpp
@@ -16,113 +16,16 @@
  */
 
 #include "MojangAccount.h"
+#include "flows/RefreshTask.h"
+#include "flows/AuthenticateTask.h"
 
 #include <QUuid>
 #include <QJsonObject>
 #include <QJsonArray>
+#include <QRegExp>
 
 #include <logger/QsLog.h>
 
-MojangAccount::MojangAccount(const QString &username, QObject *parent) : QObject(parent)
-{
-	// Generate a client token.
-	m_clientToken = QUuid::createUuid().toString();
-
-	m_username = username;
-
-	m_currentProfile = -1;
-}
-
-MojangAccount::MojangAccount(const QString &username, const QString &clientToken,
-							 const QString &accessToken, QObject *parent)
-	: QObject(parent)
-{
-	m_username = username;
-	m_clientToken = clientToken;
-	m_accessToken = accessToken;
-
-	m_currentProfile = -1;
-}
-
-MojangAccount::MojangAccount(const MojangAccount &other, QObject *parent)
-{
-	m_username = other.username();
-	m_clientToken = other.clientToken();
-	m_accessToken = other.accessToken();
-
-	m_profiles = other.m_profiles;
-	m_currentProfile = other.m_currentProfile;
-}
-
-QString MojangAccount::username() const
-{
-	return m_username;
-}
-
-QString MojangAccount::clientToken() const
-{
-	return m_clientToken;
-}
-
-void MojangAccount::setClientToken(const QString &clientToken)
-{
-	m_clientToken = clientToken;
-}
-
-QString MojangAccount::accessToken() const
-{
-	return m_accessToken;
-}
-
-void MojangAccount::setAccessToken(const QString &accessToken)
-{
-	m_accessToken = accessToken;
-}
-
-QString MojangAccount::sessionId() const
-{
-	return "token:" + m_accessToken + ":" + currentProfile()->id();
-}
-
-const QList<AccountProfile> MojangAccount::profiles() const
-{
-	return m_profiles;
-}
-
-const AccountProfile *MojangAccount::currentProfile() const
-{
-	if (m_currentProfile < 0)
-	{
-		if (m_profiles.length() > 0)
-			return &m_profiles.at(0);
-		else
-			return nullptr;
-	}
-	else
-		return &m_profiles.at(m_currentProfile);
-}
-
-bool MojangAccount::setProfile(const QString &profileId)
-{
-	const QList<AccountProfile> &profiles = this->profiles();
-	for (int i = 0; i < profiles.length(); i++)
-	{
-		if (profiles.at(i).id() == profileId)
-		{
-			m_currentProfile = i;
-			return true;
-		}
-	}
-	return false;
-}
-
-void MojangAccount::loadProfiles(const ProfileList &profiles)
-{
-	m_profiles.clear();
-	for (auto profile : profiles)
-		m_profiles.append(profile);
-}
-
 MojangAccountPtr MojangAccount::loadFromJson(const QJsonObject &object)
 {
 	// The JSON object must at least have a username for it to be valid.
@@ -143,7 +46,7 @@ MojangAccountPtr MojangAccount::loadFromJson(const QJsonObject &object)
 		return nullptr;
 	}
 
-	ProfileList profiles;
+	QList<AccountProfile> profiles;
 	for (QJsonValue profileVal : profileArray)
 	{
 		QJsonObject profileObject = profileVal.toObject();
@@ -154,67 +57,112 @@ MojangAccountPtr MojangAccount::loadFromJson(const QJsonObject &object)
 			QLOG_WARN() << "Unable to load a profile because it was missing an ID or a name.";
 			continue;
 		}
-		profiles.append(AccountProfile(id, name));
+		profiles.append({id, name});
 	}
 
-	MojangAccountPtr account(new MojangAccount(username, clientToken, accessToken));
-	account->loadProfiles(profiles);
+	MojangAccountPtr account(new MojangAccount());
+	account->m_username = username;
+	account->m_clientToken = clientToken;
+	account->m_accessToken = accessToken;
+	account->m_profiles = profiles;
 
 	// Get the currently selected profile.
 	QString currentProfile = object.value("activeProfile").toString("");
 	if (!currentProfile.isEmpty())
-		account->setProfile(currentProfile);
+		account->setCurrentProfile(currentProfile);
+
+	return account;
+}
 
+MojangAccountPtr MojangAccount::createFromUsername(const QString& username)
+{
+	MojangAccountPtr account(new MojangAccount());
+	account->m_clientToken = QUuid::createUuid().toString().remove(QRegExp("[{}-]"));
+	account->m_username = username;
 	return account;
 }
 
-QJsonObject MojangAccount::saveToJson()
+QJsonObject MojangAccount::saveToJson() const
 {
 	QJsonObject json;
-	json.insert("username", username());
-	json.insert("clientToken", clientToken());
-	json.insert("accessToken", accessToken());
+	json.insert("username", m_username);
+	json.insert("clientToken", m_clientToken);
+	json.insert("accessToken", m_accessToken);
 
 	QJsonArray profileArray;
 	for (AccountProfile profile : m_profiles)
 	{
 		QJsonObject profileObj;
-		profileObj.insert("id", profile.id());
-		profileObj.insert("name", profile.name());
+		profileObj.insert("id", profile.id);
+		profileObj.insert("name", profile.name);
 		profileArray.append(profileObj);
 	}
 	json.insert("profiles", profileArray);
 
-	if (currentProfile() != nullptr)
-		json.insert("activeProfile", currentProfile()->id());
+	if (m_currentProfile != -1)
+		json.insert("activeProfile", currentProfile()->id);
 
 	return json;
 }
 
+bool MojangAccount::setCurrentProfile(const QString &profileId)
+{
+	for (int i = 0; i < m_profiles.length(); i++)
+	{
+		if (m_profiles[i].id == profileId)
+		{
+			m_currentProfile = i;
+			return true;
+		}
+	}
+	return false;
+}
 
-AccountProfile::AccountProfile(const QString& id, const QString& name)
+const AccountProfile* MojangAccount::currentProfile() const
 {
-	m_id = id;
-	m_name = name;
+	if(m_currentProfile == -1)
+		return nullptr;
+	return &m_profiles[m_currentProfile];
 }
 
-AccountProfile::AccountProfile(const AccountProfile &other)
+AccountStatus MojangAccount::accountStatus() const
 {
-	m_id = other.m_id;
-	m_name = other.m_name;
+	if(m_accessToken.isEmpty())
+		return NotVerified;
+	if(!m_online)
+		return Verified;
+	return Online;
 }
 
-QString AccountProfile::id() const
+bool MojangAccount::login(QString password)
 {
-	return m_id;
+	if(m_currentTask)
+		return false;
+	if(password.isEmpty())
+	{
+		m_currentTask.reset(new RefreshTask(this, this));
+	}
+	else
+	{
+		m_currentTask.reset(new AuthenticateTask(this, password, this));
+	}
+	connect(m_currentTask.get(), SIGNAL(succeeded()), SLOT(authSucceeded()));
+	connect(m_currentTask.get(), SIGNAL(failed(QString)), SLOT(authFailed(QString)));
+	m_currentTask->start();
+	return true;
 }
 
-QString AccountProfile::name() const
+void MojangAccount::authSucceeded()
 {
-	return m_name;
+	m_online = true;
+	m_currentTask.reset();
+	emit changed();
 }
 
-void MojangAccount::propagateChange()
+void MojangAccount::authFailed(QString reason)
 {
+	m_online = false;
+	m_accessToken = QString();
+	m_currentTask.reset();
 	emit changed();
 }
diff --git a/logic/auth/MojangAccount.h b/logic/auth/MojangAccount.h
index 25a85790..751aafe5 100644
--- a/logic/auth/MojangAccount.h
+++ b/logic/auth/MojangAccount.h
@@ -23,34 +23,25 @@
 
 #include <memory>
 
+class YggdrasilTask;
 class MojangAccount;
 
 typedef std::shared_ptr<MojangAccount> MojangAccountPtr;
 Q_DECLARE_METATYPE(MojangAccountPtr)
 
 /**
- * Class that represents a profile within someone's Mojang account.
+ * A profile within someone's Mojang account.
  *
  * Currently, the profile system has not been implemented by Mojang yet,
  * but we might as well add some things for it in MultiMC right now so
  * we don't have to rip the code to pieces to add it later.
  */
-class AccountProfile
+struct AccountProfile
 {
-public:
-	AccountProfile(const QString &id, const QString &name);
-	AccountProfile(const AccountProfile &other);
-
-	QString id() const;
-	QString name() const;
-
-protected:
-	QString m_id;
-	QString m_name;
+	QString id;
+	QString name;
 };
 
-typedef QList<AccountProfile> ProfileList;
-
 struct User
 {
 	QString id;
@@ -59,6 +50,13 @@ struct User
 	QList<QPair<QString, QString>> properties;
 };
 
+enum AccountStatus
+{
+	NotVerified,
+	Verified,
+	Online
+};
+
 /**
  * Object that stores information about a certain Mojang account.
  *
@@ -68,106 +66,112 @@ struct User
 class MojangAccount : public QObject
 {
 	Q_OBJECT
-public:
-	/**
-	 * Constructs a new MojangAccount with the given username.
-	 * The client token will be generated automatically and the access token will be blank.
-	 */
-	explicit MojangAccount(const QString &username, QObject *parent = 0);
+public: /* construction */
+	//! Do not copy accounts. ever.
+	explicit MojangAccount(const MojangAccount &other, QObject *parent) = delete;
 
-	/**
-	 * Constructs a new MojangAccount with the given username, client token, and access token.
-	 */
-	explicit MojangAccount(const QString &username, const QString &clientToken,
-						   const QString &accessToken, QObject *parent = 0);
+	//! Default constructor
+	explicit MojangAccount(QObject *parent = 0) : QObject(parent) {};
 
-	/**
-	 * Constructs a new MojangAccount matching the given account.
-	 */
-	MojangAccount(const MojangAccount &other, QObject *parent);
+	//! Creates an empty account for the specified user name.
+	static MojangAccountPtr createFromUsername(const QString &username);
 
-	/**
-	 * Loads a MojangAccount from the given JSON object.
-	 */
+	//! Loads a MojangAccount from the given JSON object.
 	static MojangAccountPtr loadFromJson(const QJsonObject &json);
 
-	/**
-	 * Saves a MojangAccount to a JSON object and returns it.
-	 */
-	QJsonObject saveToJson();
+	//! Saves a MojangAccount to a JSON object and returns it.
+	QJsonObject saveToJson() const;
 
+public: /* manipulation */
 	/**
-	 * Update the account on disk and lists (it changed, for whatever reason)
-	 * This is called by various Yggdrasil tasks.
-	 */
-	void propagateChange();
-
-	/**
-	 * This MojangAccount's username. May be an email address if the account is migrated.
+	 * Sets the currently selected profile to the profile with the given ID string.
+	 * If profileId is not in the list of available profiles, the function will simply return
+	 * false.
 	 */
-	QString username() const;
+	bool setCurrentProfile(const QString &profileId);
 
 	/**
-	 * This MojangAccount's client token. This is a UUID used by Mojang's auth servers to identify this client.
-	 * This is unique for each MojangAccount.
+	 * Attempt to login. Empty password means we use the token.
+	 * If the attempt fails because we already are performing some task, it returns false.
 	 */
-	QString clientToken() const;
+	bool login(QString password = QString());
 
-	/**
-	 * Sets the MojangAccount's client token to the given value.
-	 */
-	void setClientToken(const QString &token);
+public: /* queries */
+	const QString &username() const
+	{
+		return m_username;
+	}
 
-	/**
-	 * This MojangAccount's access token.
-	 * If the user has not chosen to stay logged in, this will be an empty string.
-	 */
-	QString accessToken() const;
+	const QString &clientToken() const
+	{
+		return m_clientToken;
+	}
 
-	/**
-	 * Changes this MojangAccount's access token to the given value.
-	 */
-	void setAccessToken(const QString &token);
+	const QString &accessToken() const
+	{
+		return m_accessToken;
+	}
 
-	/**
-	 * Get full session ID
-	 */
-	QString sessionId() const;
+	const QList<AccountProfile> &profiles() const
+	{
+		return m_profiles;
+	}
 
-	/**
-	 * Returns a list of the available account profiles.
-	 */
-	const ProfileList profiles() const;
+	//! Get the session ID required for legacy Minecraft versions
+	QString sessionId() const
+	{
+		if (m_currentProfile != -1 && !m_accessToken.isEmpty())
+			return "token:" + m_accessToken + ":" + m_profiles[m_currentProfile].id;
+		return "-";
+	}
 
-	/**
-	 * Returns a pointer to the currently selected profile.
-	 * If no profile is selected, returns the first profile in the profile list or nullptr if there are none.
-	 */
+	//! Returns the currently selected profile (if none, returns nullptr)
 	const AccountProfile *currentProfile() const;
 
-	/**
-	 * Sets the currently selected profile to the profile with the given ID string.
-	 * If profileId is not in the list of available profiles, the function will simply return false.
-	 */
-	bool setProfile(const QString &profileId);
-
-	/**
-	 * Clears the current account profile list and replaces it with the given profile list.
-	 */
-	void loadProfiles(const ProfileList &profiles);
+	//! Returns whether the account is NotVerified, Verified or Online
+	AccountStatus accountStatus() const;
 
 signals:
 	/**
-	 * This isgnal is emitted whrn the account changes
+	 * This signal is emitted when the account changes
 	 */
 	void changed();
 
-protected:
+	// TODO: better signalling for the various possible state changes - especially errors
+
+protected: /* variables */
 	QString m_username;
+
+	// Used to identify the client - the user can have multiple clients for the same account
+	// Think: different launchers, all connecting to the same account/profile
 	QString m_clientToken;
-	QString m_accessToken;  // Blank if not logged in.
-	int m_currentProfile;   // Index of the selected profile within the list of available
-							// profiles. -1 if nothing is selected.
-	ProfileList m_profiles; // List of available profiles.
-	User m_user;			// the user structure, whatever it is.
+
+	// Blank if not logged in.
+	QString m_accessToken;
+
+	// Index of the selected profile within the list of available
+	// profiles. -1 if nothing is selected.
+	int m_currentProfile = -1;
+
+	// List of available profiles.
+	QList<AccountProfile> m_profiles;
+
+	// the user structure, whatever it is.
+	User m_user;
+
+	// true when the account is verified
+	bool m_online = false;
+
+	// current task we are executing here
+	std::shared_ptr<YggdrasilTask> m_currentTask;
+
+private slots:
+	void authSucceeded();
+	void authFailed(QString reason);
+
+public:
+	friend class YggdrasilTask;
+	friend class AuthenticateTask;
+	friend class ValidateTask;
+	friend class RefreshTask;
 };
diff --git a/logic/auth/YggdrasilTask.cpp b/logic/auth/YggdrasilTask.cpp
index 797e84cd..e06ae182 100644
--- a/logic/auth/YggdrasilTask.cpp
+++ b/logic/auth/YggdrasilTask.cpp
@@ -25,10 +25,9 @@
 #include <MultiMC.h>
 #include <logic/auth/MojangAccount.h>
 
-YggdrasilTask::YggdrasilTask(MojangAccountPtr account, QObject *parent) : Task(parent)
+YggdrasilTask::YggdrasilTask(MojangAccount *account, QObject *parent)
+	: Task(parent), m_account(account)
 {
-	m_error = nullptr;
-	m_account = account;
 }
 
 YggdrasilTask::~YggdrasilTask()
@@ -81,8 +80,9 @@ void YggdrasilTask::processReply(QNetworkReply *reply)
 
 		if (responseCode == 200)
 		{
-			// If the response code was 200, then there shouldn't be an error. Make sure anyways.
-			// Also, sometimes an empty reply indicates success. If there was no data received, 
+			// If the response code was 200, then there shouldn't be an error. Make sure
+			// anyways.
+			// Also, sometimes an empty reply indicates success. If there was no data received,
 			// pass an empty json object to the processResponse function.
 			if (jsonError.error == QJsonParseError::NoError || replyData.size() == 0)
 			{
@@ -102,25 +102,34 @@ void YggdrasilTask::processReply(QNetworkReply *reply)
 			}
 			else
 			{
-				emitFailed(tr("Failed to parse Yggdrasil JSON response: %1 at offset %2.").arg(jsonError.errorString()).arg(jsonError.offset));
+				emitFailed(tr("Failed to parse Yggdrasil JSON response: %1 at offset %2.")
+							   .arg(jsonError.errorString())
+							   .arg(jsonError.offset));
 			}
 		}
 		else
 		{
-			// If the response code was not 200, then Yggdrasil may have given us information about the error.
-			// If we can parse the response, then get information from it. Otherwise just say there was an unknown error.
+			// If the response code was not 200, then Yggdrasil may have given us information
+			// about the error.
+			// If we can parse the response, then get information from it. Otherwise just say
+			// there was an unknown error.
 			if (jsonError.error == QJsonParseError::NoError)
 			{
 				// We were able to parse the server's response. Woo!
-				// Call processError. If a subclass has overridden it then they'll handle their stuff there.
-				QLOG_DEBUG() << "The request failed, but the server gave us an error message. Processing error.";
+				// Call processError. If a subclass has overridden it then they'll handle their
+				// stuff there.
+				QLOG_DEBUG() << "The request failed, but the server gave us an error message. "
+								"Processing error.";
 				emitFailed(processError(doc.object()));
 			}
 			else
 			{
-				// The server didn't say anything regarding the error. Give the user an unknown error.
-				QLOG_DEBUG() << "The request failed and the server gave no error message. Unknown error.";
-				emitFailed(tr("An unknown error occurred when trying to communicate with the authentication server: %1").arg(reply->errorString()));
+				// The server didn't say anything regarding the error. Give the user an unknown
+				// error.
+				QLOG_DEBUG() << "The request failed and the server gave no error message. "
+								"Unknown error.";
+				emitFailed(tr("An unknown error occurred when trying to communicate with the "
+							  "authentication server: %1").arg(reply->errorString()));
 			}
 		}
 	}
@@ -161,8 +170,3 @@ YggdrasilTask::Error *YggdrasilTask::getError() const
 {
 	return this->m_error;
 }
-
-MojangAccountPtr YggdrasilTask::getMojangAccount() const
-{
-	return this->m_account;
-}
diff --git a/logic/auth/YggdrasilTask.h b/logic/auth/YggdrasilTask.h
index 62638c9d..18d3dc61 100644
--- a/logic/auth/YggdrasilTask.h
+++ b/logic/auth/YggdrasilTask.h
@@ -31,7 +31,7 @@ class YggdrasilTask : public Task
 {
 	Q_OBJECT
 public:
-	explicit YggdrasilTask(MojangAccountPtr account, QObject *parent = 0);
+	explicit YggdrasilTask(MojangAccount * account, QObject *parent = 0);
 	~YggdrasilTask();
 
 	/**
@@ -60,11 +60,6 @@ public:
 	};
 
 	/**
-	 * Gets the Mojang account that this task is operating on.
-	 */
-	virtual MojangAccountPtr getMojangAccount() const;
-
-	/**
 	 * Returns a pointer to a YggdrasilTask::Error object if an error has occurred.
 	 * If no error has occurred, returns a null pointer.
 	 */
@@ -120,11 +115,11 @@ protected:
 	 */
 	virtual QString getStateMessage(const State state) const;
 
-	MojangAccountPtr m_account;
+	MojangAccount *m_account = nullptr;
 
 	QNetworkReply *m_netReply;
 
-	Error *m_error;
+	Error *m_error = nullptr;
 
 protected
 slots:
diff --git a/logic/auth/flows/AuthenticateTask.cpp b/logic/auth/flows/AuthenticateTask.cpp
index ec2004d6..966548ec 100644
--- a/logic/auth/flows/AuthenticateTask.cpp
+++ b/logic/auth/flows/AuthenticateTask.cpp
@@ -26,7 +26,7 @@
 
 #include "logger/QsLog.h"
 
-AuthenticateTask::AuthenticateTask(MojangAccountPtr account, const QString &password,
+AuthenticateTask::AuthenticateTask(MojangAccount * account, const QString &password,
 								   QObject *parent)
 	: YggdrasilTask(account, parent), m_password(password)
 {
@@ -59,14 +59,14 @@ QJsonObject AuthenticateTask::getRequestContent() const
 		req.insert("agent", agent);
 	}
 
-	req.insert("username", getMojangAccount()->username());
+	req.insert("username", m_account->username());
 	req.insert("password", m_password);
 	req.insert("requestUser", true);
 
 	// If we already have a client token, give it to the server.
 	// Otherwise, let the server give us one.
-	if (!getMojangAccount()->clientToken().isEmpty())
-		req.insert("clientToken", getMojangAccount()->clientToken());
+	if (!m_account->m_clientToken.isEmpty())
+		req.insert("clientToken", m_account->m_clientToken);
 
 	return req;
 }
@@ -88,8 +88,7 @@ bool AuthenticateTask::processResponse(QJsonObject responseData)
 		QLOG_ERROR() << "Server didn't send a client token.";
 		return false;
 	}
-	if (!getMojangAccount()->clientToken().isEmpty() &&
-		clientToken != getMojangAccount()->clientToken())
+	if (!m_account->m_clientToken.isEmpty() && clientToken != m_account->m_clientToken)
 	{
 		// The server changed our client token! Obey its wishes, but complain. That's what I do
 		// for my parents, so...
@@ -97,7 +96,7 @@ bool AuthenticateTask::processResponse(QJsonObject responseData)
 					<< "'. This shouldn't happen, but it isn't really a big deal.";
 	}
 	// Set the client token.
-	getMojangAccount()->setClientToken(clientToken);
+	m_account->m_clientToken = clientToken;
 
 	// Now, we set the access token.
 	QLOG_DEBUG() << "Getting access token.";
@@ -109,7 +108,7 @@ bool AuthenticateTask::processResponse(QJsonObject responseData)
 		QLOG_ERROR() << "Server didn't send an access token.";
 	}
 	// Set the access token.
-	getMojangAccount()->setAccessToken(accessToken);
+	m_account->m_accessToken = accessToken;
 
 	// Now we load the list of available profiles.
 	// Mojang hasn't yet implemented the profile system,
@@ -117,7 +116,7 @@ bool AuthenticateTask::processResponse(QJsonObject responseData)
 	// don't have trouble implementing it later.
 	QLOG_DEBUG() << "Loading profile list.";
 	QJsonArray availableProfiles = responseData.value("availableProfiles").toArray();
-	ProfileList loadedProfiles;
+	QList<AccountProfile> loadedProfiles;
 	for (auto iter : availableProfiles)
 	{
 		QJsonObject profile = iter.toObject();
@@ -135,10 +134,10 @@ bool AuthenticateTask::processResponse(QJsonObject responseData)
 		}
 
 		// Now, add a new AccountProfile entry to the list.
-		loadedProfiles.append(AccountProfile(id, name));
+		loadedProfiles.append({id, name});
 	}
 	// Put the list of profiles we loaded into the MojangAccount object.
-	getMojangAccount()->loadProfiles(loadedProfiles);
+	m_account->m_profiles = loadedProfiles;
 
 	// Finally, we set the current profile to the correct value. This is pretty simple.
 	// We do need to make sure that the current profile that the server gave us
@@ -153,7 +152,7 @@ bool AuthenticateTask::processResponse(QJsonObject responseData)
 		QLOG_ERROR() << "Server didn't specify a currently selected profile.";
 		return false;
 	}
-	if (!getMojangAccount()->setProfile(currentProfileId))
+	if (!m_account->setCurrentProfile(currentProfileId))
 	{
 		// TODO: Set an error to display to the user.
 		QLOG_ERROR() << "Server specified a selected profile that wasn't in the available "
diff --git a/logic/auth/flows/AuthenticateTask.h b/logic/auth/flows/AuthenticateTask.h
index 3b99caad..b6564657 100644
--- a/logic/auth/flows/AuthenticateTask.h
+++ b/logic/auth/flows/AuthenticateTask.h
@@ -30,7 +30,7 @@ class AuthenticateTask : public YggdrasilTask
 {
 	Q_OBJECT
 public:
-	AuthenticateTask(MojangAccountPtr account, const QString &password, QObject *parent = 0);
+	AuthenticateTask(MojangAccount *account, const QString &password, QObject *parent = 0);
 
 protected:
 	virtual QJsonObject getRequestContent() const;
diff --git a/logic/auth/flows/RefreshTask.cpp b/logic/auth/flows/RefreshTask.cpp
index b56ed9bc..39fb493f 100644
--- a/logic/auth/flows/RefreshTask.cpp
+++ b/logic/auth/flows/RefreshTask.cpp
@@ -25,7 +25,7 @@
 
 #include "logger/QsLog.h"
 
-RefreshTask::RefreshTask(MojangAccountPtr account, QObject *parent)
+RefreshTask::RefreshTask(MojangAccount *account, QObject *parent)
 	: YggdrasilTask(account, parent)
 {
 }
@@ -44,13 +44,12 @@ QJsonObject RefreshTask::getRequestContent() const
 	 *  "requestUser": true/false               // request the user structure
 	 * }
 	 */
-	auto account = getMojangAccount();
 	QJsonObject req;
-	req.insert("clientToken", account->clientToken());
-	req.insert("accessToken", account->accessToken());
+	req.insert("clientToken", m_account->m_clientToken);
+	req.insert("accessToken", m_account->m_accessToken);
 	/*
 	{
-		auto currentProfile = account->currentProfile();
+		auto currentProfile = m_account->currentProfile();
 		QJsonObject profile;
 		profile.insert("id", currentProfile->id());
 		profile.insert("name", currentProfile->name());
@@ -64,8 +63,6 @@ QJsonObject RefreshTask::getRequestContent() const
 
 bool RefreshTask::processResponse(QJsonObject responseData)
 {
-	auto account = getMojangAccount();
-
 	// Read the response data. We need to get the client token, access token, and the selected
 	// profile.
 	QLOG_DEBUG() << "Processing authentication response.";
@@ -80,7 +77,7 @@ bool RefreshTask::processResponse(QJsonObject responseData)
 		QLOG_ERROR() << "Server didn't send a client token.";
 		return false;
 	}
-	if (!account->clientToken().isEmpty() && clientToken != account->clientToken())
+	if (!m_account->m_clientToken.isEmpty() && clientToken != m_account->m_clientToken)
 	{
 		// The server changed our client token! Obey its wishes, but complain. That's what I do
 		// for my parents, so...
@@ -104,7 +101,7 @@ bool RefreshTask::processResponse(QJsonObject responseData)
 	// profile)
 	QJsonObject currentProfile = responseData.value("selectedProfile").toObject();
 	QString currentProfileId = currentProfile.value("id").toString("");
-	if (account->currentProfile()->id() != currentProfileId)
+	if (m_account->currentProfile()->id != currentProfileId)
 	{
 		// TODO: Set an error to display to the user.
 		QLOG_ERROR() << "Server didn't specify the same selected profile as ours.";
@@ -132,8 +129,7 @@ bool RefreshTask::processResponse(QJsonObject responseData)
 	// we've succeeded.
 	QLOG_DEBUG() << "Finished reading refresh response.";
 	// Reset the access token.
-	account->setAccessToken(accessToken);
-	account->propagateChange();
+	m_account->m_accessToken = accessToken;
 	return true;
 }
 
diff --git a/logic/auth/flows/RefreshTask.h b/logic/auth/flows/RefreshTask.h
index 2596f6c7..2fd50c60 100644
--- a/logic/auth/flows/RefreshTask.h
+++ b/logic/auth/flows/RefreshTask.h
@@ -30,7 +30,7 @@ class RefreshTask : public YggdrasilTask
 {
 	Q_OBJECT
 public:
-	RefreshTask(MojangAccountPtr account, QObject *parent = 0);
+	RefreshTask(MojangAccount * account, QObject *parent = 0);
 
 protected:
 	virtual QJsonObject getRequestContent() const;
diff --git a/logic/auth/flows/ValidateTask.cpp b/logic/auth/flows/ValidateTask.cpp
index d9e0e46b..84d5e703 100644
--- a/logic/auth/flows/ValidateTask.cpp
+++ b/logic/auth/flows/ValidateTask.cpp
@@ -26,7 +26,7 @@
 
 #include "logger/QsLog.h"
 
-ValidateTask::ValidateTask(MojangAccountPtr account, QObject *parent)
+ValidateTask::ValidateTask(MojangAccount * account, QObject *parent)
 	: YggdrasilTask(account, parent)
 {
 }
@@ -34,7 +34,7 @@ ValidateTask::ValidateTask(MojangAccountPtr account, QObject *parent)
 QJsonObject ValidateTask::getRequestContent() const
 {
 	QJsonObject req;
-	req.insert("accessToken", getMojangAccount()->accessToken());
+	req.insert("accessToken", m_account->m_accessToken);
 	return req;
 }
 
diff --git a/logic/auth/flows/ValidateTask.h b/logic/auth/flows/ValidateTask.h
index 3ff78c6a..9788f20b 100644
--- a/logic/auth/flows/ValidateTask.h
+++ b/logic/auth/flows/ValidateTask.h
@@ -28,7 +28,7 @@ class ValidateTask : public YggdrasilTask
 {
 	Q_OBJECT
 public:
-	ValidateTask(MojangAccountPtr account, QObject *parent = 0);
+	ValidateTask(MojangAccount *account, QObject *parent = 0);
 
 protected:
 	virtual QJsonObject getRequestContent() const;
diff --git a/logic/lists/MojangAccountList.cpp b/logic/lists/MojangAccountList.cpp
index 466cc934..defa5d8c 100644
--- a/logic/lists/MojangAccountList.cpp
+++ b/logic/lists/MojangAccountList.cpp
@@ -83,10 +83,7 @@ void MojangAccountList::removeAccount(QModelIndex index)
 
 MojangAccountPtr MojangAccountList::activeAccount() const
 {
-	if (m_activeAccount.isEmpty())
-		return nullptr;
-	else
-		return findAccount(m_activeAccount);
+	return m_activeAccount;
 }
 
 void MojangAccountList::setActiveAccount(const QString &username)
@@ -94,14 +91,14 @@ void MojangAccountList::setActiveAccount(const QString &username)
 	beginResetModel();
 	if (username.isEmpty())
 	{
-		m_activeAccount = "";
+		m_activeAccount = nullptr;
 	}
 	else
 	{
 		for (MojangAccountPtr account : m_accounts)
 		{
 			if (account->username() == username)
-				m_activeAccount = username;
+				m_activeAccount = account;
 		}
 	}
 	endResetModel();
@@ -152,7 +149,7 @@ QVariant MojangAccountList::data(const QModelIndex &index, int role) const
 		switch (index.column())
 		{
 		case ActiveColumn:
-			return account->username() == m_activeAccount;
+			return account == m_activeAccount;
 
 		case NameColumn:
 			return account->username();
@@ -297,11 +294,9 @@ bool MojangAccountList::loadList(const QString &filePath)
 			QLOG_WARN() << "Failed to load an account.";
 		}
 	}
-	endResetModel();
-
 	// Load the active account.
-	m_activeAccount = root.value("activeAccount").toString("");
-
+	m_activeAccount = findAccount(root.value("activeAccount").toString(""));
+	endResetModel();
 	return true;
 }
 
@@ -336,8 +331,11 @@ bool MojangAccountList::saveList(const QString &filePath)
 	// Insert the account list into the root object.
 	root.insert("accounts", accounts);
 
-	// Save the active account.
-	root.insert("activeAccount", m_activeAccount);
+	if(m_activeAccount)
+	{
+		// Save the active account.
+		root.insert("activeAccount", m_activeAccount->username());
+	}
 
 	// Create a JSON document object to convert our JSON to bytes.
 	QJsonDocument doc(root);
diff --git a/logic/lists/MojangAccountList.h b/logic/lists/MojangAccountList.h
index 744f3c51..b3301bf6 100644
--- a/logic/lists/MojangAccountList.h
+++ b/logic/lists/MojangAccountList.h
@@ -161,10 +161,9 @@ protected:
 	QList<MojangAccountPtr> m_accounts;
 
 	/*!
-	 * Username of the account that is currently active.
-	 * Empty string if no account is active.
+	 * Account that is currently active.
 	 */
-	QString m_activeAccount;
+	MojangAccountPtr m_activeAccount;
 
 	//! Path to the account list file. Empty string if there isn't one.
 	QString m_listFilePath;