feat: barebones auth implementation

CMakeLists.txt

@@ -3,11 +3,13 @@ cmake_minimum_required(VERSION 3.16)
 project(llink VERSION 0.1 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 find_package(Qt6 REQUIRED COMPONENTS
         Core
         Gui
         Widgets
+        Network
 )
 
 qt_standard_project_setup(REQUIRES 6.8)
@@ -19,6 +21,10 @@ qt_add_executable(llink
         src/VerticalLabel.cpp
         src/VerticalLabel.h
         src/mainwindow.ui
+        src/authmanager.cpp
+        src/networkmanager.cpp
+        src/authdialog.ui
+        src/authdialog.cpp
 )
 
 qt_add_resources(llink
@@ -26,6 +32,7 @@ qt_add_resources(llink
         FILES
         assets/icons/mono/basic/menu.svg
         assets/icons/mono/basic/plus.svg
+        assets/FLOWY-4.png
         assets/logo.png
         styles/remarkable.qss
 )
@@ -46,6 +53,7 @@ target_link_libraries(llink
         Qt6::Core
         Qt6::Gui
         Qt6::Widgets
+        Qt6::Network
 )
 
 include(GNUInstallDirs)

CMakeLists.txt.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 16.0.2, 2026-01-24T08:42:11. -->
+<!-- Written by QtCreator 16.0.2, 2026-01-27T10:36:09. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
@@ -86,6 +86,9 @@
     <valuelist type="QVariantList" key="ClangTools.SuppressedDiagnostics"/>
     <value type="bool" key="ClangTools.UseGlobalSettings">true</value>
    </valuemap>
+   <valuemap type="QVariantMap" key="CppEditor.QuickFix">
+    <value type="bool" key="UseGlobalSettings">true</value>
+   </valuemap>
   </valuemap>
  </data>
  <data>
@@ -103,15 +106,15 @@
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     <value type="bool" key="CMake.Configure.ClearSystemEnvironment">false</value>
     <valuelist type="QVariantList" key="CMake.Configure.UserEnvironmentChanges"/>
-    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
+-DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
+-DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}
 -DCMAKE_BUILD_TYPE:STRING=Debug
 -DCMAKE_PREFIX_PATH:PATH=%{Qt:QT_INSTALL_PREFIX}
 -DCMAKE_GENERATOR:STRING=Ninja
--DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON
--DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
 -DCMAKE_CXX_COMPILER:FILEPATH=%{Compiler:Executable:Cxx}
--DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
--DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}</value>
+-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+-DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON</value>
     <value type="int" key="EnableQmlDebugging">0</value>
     <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">/Users/talksik/Documents/code/llink/build/Qt_6_8_6_for_macOS-Debug</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
@@ -161,15 +164,15 @@
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     <value type="bool" key="CMake.Configure.ClearSystemEnvironment">false</value>
     <valuelist type="QVariantList" key="CMake.Configure.UserEnvironmentChanges"/>
-    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
+-DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
+-DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}
 -DCMAKE_BUILD_TYPE:STRING=Release
 -DCMAKE_PREFIX_PATH:PATH=%{Qt:QT_INSTALL_PREFIX}
 -DCMAKE_GENERATOR:STRING=Ninja
--DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON
--DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
 -DCMAKE_CXX_COMPILER:FILEPATH=%{Compiler:Executable:Cxx}
--DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
--DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}</value>
+-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+-DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON</value>
     <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">/Users/talksik/Documents/code/llink/build/Qt_6_8_6_for_macOS-Release</value>
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      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
@@ -216,15 +219,15 @@
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     <value type="bool" key="CMake.Configure.ClearSystemEnvironment">false</value>
     <valuelist type="QVariantList" key="CMake.Configure.UserEnvironmentChanges"/>
-    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
+-DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
+-DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}
 -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo
 -DCMAKE_PREFIX_PATH:PATH=%{Qt:QT_INSTALL_PREFIX}
 -DCMAKE_GENERATOR:STRING=Ninja
--DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON
--DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
 -DCMAKE_CXX_COMPILER:FILEPATH=%{Compiler:Executable:Cxx}
--DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
--DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}</value>
+-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+-DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON</value>
     <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">/Users/talksik/Documents/code/llink/build/Qt_6_8_6_for_macOS-RelWithDebInfo</value>
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      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
@@ -271,15 +274,15 @@
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     <value type="bool" key="CMake.Configure.ClearSystemEnvironment">false</value>
     <valuelist type="QVariantList" key="CMake.Configure.UserEnvironmentChanges"/>
-    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
+-DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
+-DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}
 -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo
 -DCMAKE_PREFIX_PATH:PATH=%{Qt:QT_INSTALL_PREFIX}
 -DCMAKE_GENERATOR:STRING=Ninja
--DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON
--DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
 -DCMAKE_CXX_COMPILER:FILEPATH=%{Compiler:Executable:Cxx}
--DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
--DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}</value>
+-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+-DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON</value>
     <value type="int" key="EnableQmlDebugging">0</value>
     <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">/Users/talksik/Documents/code/llink/build/Qt_6_8_6_for_macOS-Profile</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
@@ -327,15 +330,15 @@
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     <value type="bool" key="CMake.Configure.ClearSystemEnvironment">false</value>
     <valuelist type="QVariantList" key="CMake.Configure.UserEnvironmentChanges"/>
-    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+    <value type="QString" key="CMake.Initial.Parameters">-DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
+-DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
+-DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}
 -DCMAKE_BUILD_TYPE:STRING=MinSizeRel
 -DCMAKE_PREFIX_PATH:PATH=%{Qt:QT_INSTALL_PREFIX}
 -DCMAKE_GENERATOR:STRING=Ninja
--DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON
--DCMAKE_C_COMPILER:FILEPATH=%{Compiler:Executable:C}
 -DCMAKE_CXX_COMPILER:FILEPATH=%{Compiler:Executable:Cxx}
--DCMAKE_CXX_FLAGS_INIT:STRING=%{Qt:QML_DEBUG_FLAG}
--DQT_QMAKE_EXECUTABLE:FILEPATH=%{Qt:qmakeExecutable}</value>
+-DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=%{BuildConfig:BuildDirectory:NativeFilePath}/.qtc/package-manager/auto-setup.cmake
+-DCMAKE_COLOR_DIAGNOSTICS:BOOL=ON</value>
     <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">/Users/talksik/Documents/code/llink/build/Qt_6_8_6_for_macOS-MinSizeRel</value>
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      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
@@ -435,12 +438,14 @@
     <valuelist type="QVariantList" key="PE.EnvironmentAspect.Changes"/>
     <value type="bool" key="PE.EnvironmentAspect.PrintOnRun">false</value>
     <value type="QString" key="PerfRecordArgsId">-e cpu-cycles --call-graph dwarf,4096 -F 250</value>
-    <value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName"></value>
-    <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.CustomExecutableRunConfiguration</value>
-    <value type="QString" key="ProjectExplorer.RunConfiguration.BuildKey"></value>
+    <value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">llink</value>
+    <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">CMakeProjectManager.CMakeRunConfiguration.</value>
+    <value type="QString" key="ProjectExplorer.RunConfiguration.BuildKey">llink</value>
     <value type="bool" key="ProjectExplorer.RunConfiguration.Customized">false</value>
     <value type="bool" key="RunConfiguration.UseCppDebuggerAuto">true</value>
+    <value type="bool" key="RunConfiguration.UseLibrarySearchPath">true</value>
     <value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
+    <value type="QString" key="RunConfiguration.WorkingDirectory.default">/Users/talksik/Documents/code/llink/build/Qt_6_8_6_for_macOS-Debug/llink.app/Contents/MacOS</value>
    </valuemap>
    <value type="qlonglong" key="ProjectExplorer.Target.RunConfigurationCount">1</value>
   </valuemap>

main.cpp

@@ -1,18 +1,22 @@
 #include <QApplication>
 #include <QFile>
 #include "src/MainWindow.h"
+#include <QCoreApplication>
 
 int main(int argc, char *argv[])
 {
-    qDebug() << "hello world";
+    QCoreApplication::setOrganizationName("Flowy Labs, Inc");
+    QCoreApplication::setOrganizationDomain("flowylabs.ai");
+    QCoreApplication::setApplicationName("llink");
+
     QApplication a(argc, argv);
 
     // Load reMarkable e-ink stylesheet
-    QFile styleFile(":/styles/remarkable.qss");
-    if (styleFile.open(QFile::ReadOnly | QFile::Text)) {
-        a.setStyleSheet(styleFile.readAll());
-        styleFile.close();
-    }
+    // QFile styleFile(":/styles/remarkable.qss");
+    // if (styleFile.open(QFile::ReadOnly | QFile::Text)) {
+    //     a.setStyleSheet(styleFile.readAll());
+    //     styleFile.close();
+    // }
 
     MainWindow w;
     w.show();

src/MainWindow.cpp

@@ -3,55 +3,68 @@
 //
 
 #include "MainWindow.h"
-#include <QSystemTrayIcon>
-#include <QMenu>
-#include <QApplication>
 #include "ui_mainwindow.h"
+#include <QApplication>
 #include <QLabel>
+#include <QMenu>
+#include <QSystemTrayIcon>
+#include "authmanager.h"
+#include "authdialog.h"
 
-MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), m_trayIcon(nullptr)
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent), m_trayIcon(nullptr), m_authManager(new AuthManager(this)), m_authDialog(nullptr)
 {
-    ui = new Ui::MainWindow;
-    ui->setupUi(this);
-    QWidget *widget = new QWidget(this);
-    ui->tabWidget->addTab(widget, "Flowy Labs, Inc");
+  m_authDialog = new AuthDialog(m_authManager, this);
 
-    connect(ui->pushButton, &QPushButton::clicked, this, [this]() {
-        qDebug() << "Button clicked for signing on";
-        // TODO: this would make some other calls, and then
-        // we listen to another signal from some service/underlying model
-        // when auth state changes
-        // And then we can hide the UI or change the stackview
-        ui->tabWidget->setCurrentIndex(1);
+  ui = new Ui::MainWindow;
+  ui->setupUi(this);
 
-        // we can call some other method to initialize some data whenever we are done logging in
-        // the complexity of this flow in qml is similar but just less imperative, more declarative
-        // managing the ui is technically more work, but not once we get used to it, perhaps.
-    });
-    setupTrayIcon();
+  // Show auth dialog initially (user sees this while init() checks for session)
+  m_authDialog->setModal(true);
+  m_authDialog->reset();
+  m_authDialog->show();
+
+  // Connect signal so dialog hides if valid session found, shows and resets on sign out
+  connect(m_authManager, &AuthManager::isSignedInChanged, this, [this]() {
+    if (m_authManager->isSignedIn())
+    {
+      m_authDialog->hide();
+    }
+    else
+    {
+      m_authDialog->reset();
+      m_authDialog->show();
+    }
+  });
+
+  // Check for cached session (async)
+  m_authManager->init();
+
+  setupTrayIcon();
 }
 
 void MainWindow::setupTrayIcon()
 {
-    m_trayIcon = new QSystemTrayIcon(this);
-    m_trayIcon->setIcon(QIcon(":/assets/logo.png"));
-    m_trayIcon->setToolTip("llink");
+  m_trayIcon = new QSystemTrayIcon(this);
+  m_trayIcon->setIcon(QIcon(":/assets/logo.png"));
+  m_trayIcon->setToolTip("llink");
 
-    QMenu *trayMenu = new QMenu(this);
-    trayMenu->addAction("Show", this, &MainWindow::show);
-    trayMenu->addAction("Quit", qApp, &QApplication::quit);
-    m_trayIcon->setContextMenu(trayMenu);
+  QMenu *trayMenu = new QMenu(this);
+  trayMenu->addAction("Show", this, &MainWindow::show);
+  trayMenu->addAction("Quit", qApp, &QApplication::quit);
+  m_trayIcon->setContextMenu(trayMenu);
 
-    connect(m_trayIcon, &QSystemTrayIcon::activated, this, [this](QSystemTrayIcon::ActivationReason reason) {
-        if (reason == QSystemTrayIcon::Trigger) {
-            isVisible() ? hide() : show();
-        }
-    });
+  connect(m_trayIcon, &QSystemTrayIcon::activated, this, [this](QSystemTrayIcon::ActivationReason reason) {
+    if (reason == QSystemTrayIcon::Trigger)
+    {
+      isVisible() ? hide() : show();
+    }
+  });
 
-    m_trayIcon->show();
+  m_trayIcon->show();
 }
 
 MainWindow::~MainWindow()
 {
-    delete ui;
+  delete ui;
 }

src/MainWindow.h

@@ -9,6 +9,8 @@
 
 QT_BEGIN_NAMESPACE
 class QSystemTrayIcon;
+class AuthManager;
+class AuthDialog;
 QT_END_NAMESPACE
 
 namespace Ui {
@@ -29,6 +31,9 @@ private:
 
     QSystemTrayIcon *m_trayIcon;
     Ui::MainWindow *ui;
+
+    AuthManager *m_authManager;
+    AuthDialog *m_authDialog;
 };
 
 #endif //LLINK_MAINWINDOW_H

src/authdialog.cpp

@@ -0,0 +1,118 @@
+#include "authdialog.h"
+#include "authmanager.h"
+
+AuthDialog::AuthDialog(AuthManager *authManager, QWidget *parent)
+    : QDialog{parent}, m_authManager(authManager), m_state(ENTER_EMAIL)
+{
+  ui = new Ui::Dialog;
+  ui->setupUi(this);
+
+  // initialize form based on current state
+  updateForm();
+
+  connect(ui->sendCodeButton, &QPushButton::clicked, this, [this]() {
+    QString emailInput = ui->emailLineEdit->text();
+    if (emailInput.isEmpty())
+    {
+      ui->errorMessage->setText("Must provide a valid email");
+      return;
+    }
+
+    ui->errorMessage->setText("");
+
+    m_authManager->requestSignInCode(emailInput);
+  });
+
+  connect(ui->signInButton, &QPushButton::clicked, this, [this]() {
+    QString codeInput = ui->codeLineEdit->text();
+    if (codeInput.isEmpty())
+    {
+      ui->errorMessage->setText("Must provide a valid code");
+      return;
+    }
+
+    ui->errorMessage->setText("");
+
+    m_authManager->signIn(codeInput);
+  });
+
+  connect(m_authManager, &AuthManager::codeSentToEmail, this, [this](const QString &email) {
+    m_state = ENTER_CODE;
+    updateForm();
+  });
+
+  connect(m_authManager, &AuthManager::isSignedInChanged, this, [this]() {
+    if (m_authManager->isSignedIn())
+    {
+      m_state = SIGNED_IN;
+    }
+    else
+    {
+      m_state = ENTER_EMAIL;
+    }
+
+    updateForm();
+  });
+
+  connect(m_authManager, &AuthManager::errorOccurred, this, [this](const QString &message) {
+    ui->errorMessage->setText(message);
+    ui->errorMessage->show();
+  });
+}
+
+void AuthDialog::reset()
+{
+  m_state = ENTER_EMAIL;
+  ui->emailLineEdit->clear();
+  ui->codeLineEdit->clear();
+  updateForm();
+}
+
+void AuthDialog::updateForm()
+{
+  ui->errorMessage->setText("");
+
+  switch (m_state)
+  {
+  case ENTER_EMAIL:
+    ui->successLabel->hide();
+
+    ui->sendCodeButton->show();
+    ui->emailLineEdit->show();
+    ui->emailLabel->show();
+
+    ui->signInButton->hide();
+    ui->codeLabel->hide();
+    ui->codeLineEdit->hide();
+    break;
+  case ENTER_CODE:
+    ui->successLabel->hide();
+
+    ui->sendCodeButton->hide();
+    ui->emailLineEdit->hide();
+    ui->emailLabel->hide();
+
+    ui->signInButton->show();
+    ui->codeLabel->show();
+    ui->codeLineEdit->show();
+
+    break;
+  case SIGNED_IN:
+    ui->successLabel->show();
+
+    ui->sendCodeButton->hide();
+    ui->emailLineEdit->hide();
+    ui->emailLabel->hide();
+    ui->signInButton->hide();
+    ui->codeLabel->hide();
+    ui->codeLineEdit->hide();
+    break;
+  default:
+    break;
+  }
+}
+
+AuthDialog::~AuthDialog()
+{
+  delete ui;
+}

src/authdialog.h

@@ -0,0 +1,37 @@
+#ifndef AUTHDIALOG_H
+#define AUTHDIALOG_H
+
+#include <QObject>
+#include <QWidget>
+
+#include "ui_authdialog.h"
+
+class AuthManager;
+
+class AuthDialog : public QDialog
+{
+  Q_OBJECT
+public:
+  explicit AuthDialog(AuthManager *, QWidget *parent = nullptr);
+  ~AuthDialog();
+
+  enum State
+  {
+    ENTER_EMAIL,
+    ENTER_CODE,
+    SIGNED_IN
+  };
+
+  void reset();
+
+signals:
+
+private:
+  Ui::Dialog *ui;
+  AuthManager *m_authManager;
+  State m_state;
+
+  void updateForm();
+};
+
+#endif // AUTHDIALOG_H

src/authdialog.ui

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Dialog</class>
+ <widget class="QDialog" name="Dialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <widget class="QGroupBox" name="groupBox">
+   <property name="geometry">
+    <rect>
+     <x>80</x>
+     <y>30</y>
+     <width>231</width>
+     <height>183</height>
+    </rect>
+   </property>
+   <property name="title">
+    <string>Sign in</string>
+   </property>
+   <layout class="QVBoxLayout" name="verticalLayout">
+    <item>
+     <widget class="QLabel" name="emailLabel">
+      <property name="text">
+       <string>Email</string>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="QLineEdit" name="emailLineEdit">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="cursor">
+       <cursorShape>IBeamCursor</cursorShape>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="QLabel" name="codeLabel">
+      <property name="text">
+       <string>Code</string>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="QLineEdit" name="codeLineEdit"/>
+    </item>
+    <item>
+     <widget class="QLabel" name="errorMessage">
+      <property name="text">
+       <string>Error</string>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QPushButton" name="sendCodeButton">
+   <property name="geometry">
+    <rect>
+     <x>230</x>
+     <y>250</y>
+     <width>101</width>
+     <height>32</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>Send code</string>
+   </property>
+   <property name="default">
+    <bool>true</bool>
+   </property>
+  </widget>
+  <widget class="QPushButton" name="signInButton">
+   <property name="geometry">
+    <rect>
+     <x>230</x>
+     <y>250</y>
+     <width>101</width>
+     <height>32</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>Sign in</string>
+   </property>
+   <property name="default">
+    <bool>true</bool>
+   </property>
+  </widget>
+  <widget class="QLabel" name="successLabel">
+   <property name="geometry">
+    <rect>
+     <x>120</x>
+     <y>120</y>
+     <width>121</width>
+     <height>16</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>Successful</string>
+   </property>
+  </widget>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/authmanager.cpp

@@ -0,0 +1,218 @@
+#include "authmanager.h"
+#include "networkmanager.h"
+#include <QDebug>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QNetworkReply>
+#include <QSettings>
+
+namespace
+{
+constexpr char key[] = "network/session_token";
+}
+
+AuthManager::AuthManager(QObject *parent)
+    : QObject{parent}, m_sessionData(nullptr), m_settings(new QSettings(this)), m_isSignedIn(false), m_lastEmail(""),
+      m_sessionToken("")
+{
+  connect(&NetworkManager::instance(), &NetworkManager::unauthorizedDetected, this, [this]() {
+    if (!m_isSignedIn)
+    {
+      return;
+    }
+
+    setIsSignedIn(false);
+    if (m_sessionData)
+    {
+      delete m_sessionData;
+      m_sessionData = nullptr;
+    }
+    setSessionToken("");
+  });
+}
+
+void AuthManager::init()
+{
+  QString storageSessionToken = m_settings->value(key).toString();
+  if (storageSessionToken.isEmpty())
+  {
+    return;
+  }
+  qDebug() << "Storage session token is: " << storageSessionToken;
+
+  // set it here, and unset if it fails...network manager needs to inject into the request
+  setSessionToken(storageSessionToken);
+
+  QNetworkReply *reply = NetworkManager::instance().get("/auth/me");
+  connect(reply, &QNetworkReply::finished, this, [=]() {
+    reply->deleteLater();
+
+    if (reply->error() != QNetworkReply::NoError)
+    {
+      qDebug() << "Saved session token is invalid";
+      setSessionToken("");
+      return;
+    }
+
+    qDebug() << "Saved session token is valid";
+
+    QByteArray responseData = reply->readAll();
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(responseData);
+    if (jsonDoc.isNull())
+    {
+      qWarning() << "Failed to create a JSON doc.";
+      setSessionToken("");
+      return;
+    }
+
+    QJsonObject jsonObj = jsonDoc.object();
+
+    if (!m_sessionData)
+    {
+      m_sessionData = new SessionData{};
+    }
+    m_sessionData->id = jsonObj["id"].toString();
+    m_sessionData->email = jsonObj["email"].toString();
+    m_sessionData->emailPrefix = jsonObj["email_prefix"].toString();
+
+    setSessionToken(storageSessionToken);
+
+    setIsSignedIn(true);
+  });
+}
+
+void AuthManager::setIsSignedIn(bool newValue)
+{
+  if (m_isSignedIn == newValue)
+  {
+    return;
+  }
+
+  m_isSignedIn = newValue;
+  emit isSignedInChanged();
+}
+
+bool AuthManager::isSignedIn() const
+{
+  return m_isSignedIn;
+}
+
+SessionData *AuthManager::sessionData() const
+{
+  return m_sessionData;
+}
+
+void AuthManager::requestSignInCode(const QString &email)
+{
+  if (isSignedIn())
+  {
+    qWarning() << "Must sign out first";
+    return;
+  }
+
+  QJsonDocument body;
+  QJsonObject object;
+  object["email"] = email;
+  body.setObject(object);
+  QNetworkReply *reply = NetworkManager::instance().post("/auth/request-code", body);
+
+  connect(reply, &QNetworkReply::finished, this, [=]() {
+    reply->deleteLater();
+    if (reply->error() != QNetworkReply::NoError)
+    {
+      emit errorOccurred("Unable to send code. Please try again.");
+      qDebug() << "Error in emailing auth code: " << reply->errorString();
+      return;
+    }
+
+    qDebug() << "Code successfully sent";
+    m_lastEmail = email;
+    emit codeSentToEmail(email);
+  });
+}
+
+void AuthManager::signIn(const QString &code)
+{
+  if (isSignedIn())
+  {
+    qWarning() << "Must sign out first";
+    return;
+  }
+  assert(!m_lastEmail.isEmpty());
+
+  QJsonDocument body;
+  QJsonObject object;
+  object["email"] = m_lastEmail;
+  object["code"] = code;
+  body.setObject(object);
+  QNetworkReply *reply = NetworkManager::instance().post("/auth/sign-in", body);
+
+  connect(reply, &QNetworkReply::finished, this, [=]() {
+    reply->deleteLater();
+    if (reply->error() != QNetworkReply::NoError)
+    {
+      emit errorOccurred("Unable to verify code. Please try again.");
+      qDebug() << "Error in verify code: " << reply->errorString();
+      return;
+    }
+
+    qDebug() << "Session successfully created";
+    QByteArray responseData = reply->readAll();
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(responseData);
+    if (jsonDoc.isNull())
+    {
+      qWarning() << "Failed to create a JSON doc.";
+      return;
+    }
+
+    QJsonObject jsonObj = jsonDoc.object();
+
+    if (!m_sessionData)
+    {
+      m_sessionData = new SessionData{};
+    }
+    QJsonObject human = jsonObj["human"].toObject();
+    m_sessionData->id = human["id"].toString();
+    m_sessionData->email = human["email"].toString();
+    m_sessionData->emailPrefix = human["email_prefix"].toString();
+
+    setSessionToken(jsonObj["token"].toString());
+
+    setIsSignedIn(true);
+  });
+}
+
+void AuthManager::signOut()
+{
+  if (!isSignedIn())
+  {
+    qWarning() << "Not signed in, skipping sign out";
+    return;
+  }
+
+  setIsSignedIn(false);
+  if (m_sessionData)
+  {
+    delete m_sessionData;
+    m_sessionData = nullptr;
+  }
+  setSessionToken("");
+
+  QNetworkReply *reply = NetworkManager::instance().post("/auth/sign-out", QJsonDocument());
+  connect(reply, &QNetworkReply::finished, reply, &QNetworkReply::deleteLater);
+}
+
+void AuthManager::setSessionToken(const QString &newValue)
+{
+  if (newValue.isEmpty())
+  {
+    m_settings->remove(key);
+  }
+  else
+  {
+    m_settings->setValue(key, newValue);
+  }
+
+  m_sessionToken = newValue;
+  NetworkManager::instance().setSessionToken(newValue);
+}

src/authmanager.h

@@ -0,0 +1,69 @@
+#ifndef AUTHMANAGER_H
+#define AUTHMANAGER_H
+
+#include <QObject>
+
+QT_BEGIN_NAMESPACE
+class QSettings;
+QT_END_NAMESPACE
+
+struct SessionData
+{
+  QString id;
+  QString email;
+  QString emailPrefix;
+};
+
+class AuthManager : public QObject
+{
+  Q_OBJECT
+public:
+  explicit AuthManager(QObject *parent = nullptr);
+
+  bool isSignedIn() const;
+
+  /// @brief If isSignedIn() this will contain the human's session data.
+  /// @returns Session data for the authed human. nullptr if not signed in.
+  SessionData *sessionData() const;
+
+public slots:
+  /// @brief Sends a code to the requested email.
+  ///
+  /// You must verify the code in the signIn method to receive a session.
+  ///
+  /// @params email to send code to.
+  void requestSignInCode(const QString &email);
+
+  /// @brief Creates a session if authenticated.
+  ///
+  /// @params code that was sent to the email in the previous step
+  void signIn(const QString &code);
+
+  void signOut();
+
+  /// @brief checks if there is a cached session that is valid
+  void init();
+
+signals:
+  void isSignedInChanged();
+  void codeSentToEmail(const QString &email);
+
+  void errorOccurred(const QString &message);
+
+private:
+  QString m_lastEmail;
+
+  bool m_isSignedIn;
+  void setIsSignedIn(bool);
+
+  SessionData *m_sessionData;
+
+  QSettings *m_settings;
+  QString m_sessionToken;
+
+  /// Sets session token internally to class, in storage, and sets networkmanager appropriately
+  /// Pass "" if you want to remove it.
+  void setSessionToken(const QString &);
+};
+
+#endif // AUTHMANAGER_H

src/mainwindow.ui

@@ -14,122 +14,52 @@
    <string>Flowy.llink</string>
   </property>
   <widget class="QWidget" name="centralwidget">
-   <widget class="QTabWidget" name="tabWidget">
+   <widget class="QLabel" name="label_3">
+    <property name="enabled">
+     <bool>true</bool>
+    </property>
     <property name="geometry">
      <rect>
-      <x>0</x>
-      <y>0</y>
-      <width>801</width>
-      <height>541</height>
+      <x>360</x>
+      <y>20</y>
+      <width>61</width>
+      <height>16</height>
      </rect>
     </property>
-    <property name="currentIndex">
-     <number>0</number>
+    <property name="sizePolicy">
+     <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+      <horstretch>0</horstretch>
+      <verstretch>0</verstretch>
+     </sizepolicy>
+    </property>
+    <property name="text">
+     <string/>
+    </property>
+    <property name="pixmap">
+     <pixmap resource="../build/Qt_6_8_6_for_macOS-Debug/.qt/rcc/PREFIX_PATH.qrc">:/assets/FLOWY-4.png</pixmap>
+    </property>
+    <property name="scaledContents">
+     <bool>true</bool>
+    </property>
+    <property name="alignment">
+     <set>Qt::AlignmentFlag::AlignCenter</set>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label">
+    <property name="geometry">
+     <rect>
+      <x>300</x>
+      <y>250</y>
+      <width>181</width>
+      <height>41</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Welcome to Flowy.llink</string>
+    </property>
+    <property name="alignment">
+     <set>Qt::AlignmentFlag::AlignCenter</set>
     </property>
-    <widget class="QWidget" name="tab_1">
-     <attribute name="title">
-      <string>Sign in</string>
-     </attribute>
-     <widget class="QFrame" name="frame">
-      <property name="geometry">
-       <rect>
-        <x>250</x>
-        <y>150</y>
-        <width>291</width>
-        <height>151</height>
-       </rect>
-      </property>
-      <property name="frameShape">
-       <enum>QFrame::Shape::StyledPanel</enum>
-      </property>
-      <property name="frameShadow">
-       <enum>QFrame::Shadow::Raised</enum>
-      </property>
-      <widget class="QLineEdit" name="lineEdit">
-       <property name="geometry">
-        <rect>
-         <x>20</x>
-         <y>30</y>
-         <width>251</width>
-         <height>21</height>
-        </rect>
-       </property>
-      </widget>
-      <widget class="QLineEdit" name="lineEdit_2">
-       <property name="geometry">
-        <rect>
-         <x>20</x>
-         <y>80</y>
-         <width>71</width>
-         <height>21</height>
-        </rect>
-       </property>
-      </widget>
-      <widget class="QLabel" name="label">
-       <property name="geometry">
-        <rect>
-         <x>20</x>
-         <y>10</y>
-         <width>58</width>
-         <height>16</height>
-        </rect>
-       </property>
-       <property name="text">
-        <string>Email</string>
-       </property>
-      </widget>
-      <widget class="QLabel" name="label_2">
-       <property name="geometry">
-        <rect>
-         <x>20</x>
-         <y>60</y>
-         <width>58</width>
-         <height>16</height>
-        </rect>
-       </property>
-       <property name="text">
-        <string>Code</string>
-       </property>
-      </widget>
-      <widget class="QPushButton" name="pushButton">
-       <property name="geometry">
-        <rect>
-         <x>20</x>
-         <y>110</y>
-         <width>101</width>
-         <height>32</height>
-        </rect>
-       </property>
-       <property name="text">
-        <string>Continue</string>
-       </property>
-       <property name="autoDefault">
-        <bool>false</bool>
-       </property>
-       <property name="default">
-        <bool>true</bool>
-       </property>
-       <property name="flat">
-        <bool>false</bool>
-       </property>
-      </widget>
-     </widget>
-    </widget>
-    <widget class="QWidget" name="tab_2">
-     <attribute name="title">
-      <string>App</string>
-     </attribute>
-     <widget class="QCalendarWidget" name="calendarWidget">
-      <property name="geometry">
-       <rect>
-        <x>110</x>
-        <y>40</y>
-        <width>551</width>
-        <height>401</height>
-       </rect>
-      </property>
-     </widget>
-    </widget>
    </widget>
   </widget>
   <widget class="QStatusBar" name="statusbar">
@@ -141,6 +71,8 @@
    </property>
   </widget>
  </widget>
- <resources/>
+ <resources>
+  <include location="../build/Qt_6_8_6_for_macOS-Debug/.qt/rcc/PREFIX_PATH.qrc"/>
+ </resources>
  <connections/>
 </ui>

src/networkmanager.cpp

@@ -0,0 +1,78 @@
+#include "networkmanager.h"
+#include <QJsonDocument>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+
+namespace
+{
+constexpr char API_URL[] = "https://orion.dev.flowy.live";
+}
+
+NetworkManager::NetworkManager()
+{
+  m_qnam = new QNetworkAccessManager(this);
+  connect(m_qnam, &QNetworkAccessManager::finished, this, [this](QNetworkReply *reply) {
+    // In case particular instances of QNetworkReply are not cleaned up.
+    // It's safe to be redundant with deleteLater
+    // Calling deleteLater here also doesn't disrupt QNetworkReply::finished slots, as this both here
+    //   and in those slots are fired in tandem and deleteLater waits for return to event loop to perform deleteLater
+    reply->deleteLater();
+    int statusCode = reply->attribute(QNetworkRequest::Attribute::HttpStatusCodeAttribute).toInt();
+    qDebug() << "Network request status code: " << statusCode;
+    if (statusCode == 401)
+    {
+      qWarning() << "Unauthorized request: " << reply->errorString();
+      emit unauthorizedDetected();
+    }
+  });
+}
+
+NetworkManager::~NetworkManager()
+{
+}
+
+NetworkManager &NetworkManager::instance()
+{
+  static NetworkManager instance;
+  return instance;
+}
+
+void NetworkManager::setAuthHeader(QNetworkRequest &request)
+{
+  if (m_sessionToken.isEmpty())
+  {
+    return;
+  }
+  QString headerValue = QString("Bearer %1").arg(m_sessionToken);
+  request.setRawHeader("Authorization", headerValue.toUtf8());
+}
+
+QString NetworkManager::getFullUrl(const QString &url)
+{
+  return QString("%1%2").arg(API_URL, url);
+}
+
+QNetworkReply *NetworkManager::get(const QString &path)
+{
+  QNetworkRequest req = QNetworkRequest(getFullUrl(path));
+  setAuthHeader(req);
+  return m_qnam->get(req);
+}
+
+QNetworkReply *NetworkManager::post(const QString &path, const QJsonDocument &doc)
+{
+  QNetworkRequest request = QNetworkRequest(getFullUrl(path));
+  setAuthHeader(request);
+  request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+  return m_qnam->post(request, doc.toJson());
+}
+
+QString NetworkManager::sessionToken() const
+{
+  return m_sessionToken;
+}
+
+void NetworkManager::setSessionToken(const QString &newToken)
+{
+  m_sessionToken = newToken;
+}

src/networkmanager.h

@@ -0,0 +1,53 @@
+#ifndef NETWORKMANAGER_H
+#define NETWORKMANAGER_H
+
+#include <QObject>
+
+QT_BEGIN_NAMESPACE
+class QNetworkReply;
+class QNetworkRequest;
+class QNetworkAccessManager;
+class QJsonDocument;
+QT_END_NAMESPACE
+
+class NetworkManager : public QObject
+{
+  Q_OBJECT
+public:
+  static NetworkManager &instance();
+
+  // Delete copy constructor and assignment
+  NetworkManager(const NetworkManager &) = delete;
+  void operator=(const NetworkManager &) = delete;
+
+  QString sessionToken() const;
+
+public slots:
+  // Convenience methods that inject session token.
+  // Network manager discard replies internally, in cases where a consumer callsite prefers to not manage QNetworkReply.
+  QNetworkReply *get(const QString &path);
+  QNetworkReply *post(const QString &path, const QJsonDocument &data);
+  // QNetworkReply *put(QNetworkRequest &request);
+  // QNetworkReply *del(QNetworkRequest &request);
+
+  /// @brief sets session token which will is injected into every request's headers
+  void setSessionToken(const QString &token);
+
+signals:
+  /// @brief Emitted when a request is made and fails required authentication.
+  void unauthorizedDetected();
+
+private:
+  NetworkManager();
+  ~NetworkManager();
+
+  QString m_sessionToken;
+  QNetworkAccessManager *m_qnam;
+
+  void setAuthHeader(QNetworkRequest &request);
+  /// @brief Combines the api url with given path
+  /// @param path should be like "/auth/me"
+  QString getFullUrl(const QString &path);
+};
+
+#endif // NETWORKMANAGER_H

styles/remarkable.qss

@@ -90,7 +90,7 @@ QLineEdit {
     border: 1px solid #D4D4D4;
     border-bottom: 1px solid #1A1A1A;
     border-radius: 0px;
-    padding: 8px;
+
     selection-background-color: #1A1A1A;
     selection-color: #FAFAF8;
 }