[gui] Add authentication screen

gui/application.qrc

 <RCC>
     <qresource prefix="/">
         <file>userform/userform.ui</file>
+        <file>authform/authform.ui</file>
     </qresource>
 </RCC>

gui/authform/authform.go

+package authform
+
+import (
+	"dfss/dfssc/user"
+	"dfss/gui/config"
+	"github.com/visualfc/goqt/ui"
+)
+
+type Widget struct {
+	W *ui.QWidget
+}
+
+func NewWidget(conf *config.Config, onAuth func()) *Widget {
+	file := ui.NewFileWithName(":/authform/authform.ui")
+	loader := ui.NewUiLoader()
+	form := loader.Load(file)
+
+	tokenField := ui.NewLineEditFromDriver(form.FindChild("tokenField"))
+	feedbackLabel := ui.NewLabelFromDriver(form.FindChild("feedbackLabel"))
+	authButton := ui.NewPushButtonFromDriver(form.FindChild("authButton"))
+
+	home := config.GetHomeDir()
+	authButton.OnClicked(func() {
+		form.SetDisabled(true)
+		err := user.Authenticate(
+			home+config.CAFile,
+			home+config.CertFile,
+			conf.Platform,
+			conf.Email,
+			tokenField.Text(),
+		)
+		form.SetDisabled(false)
+		if err != nil {
+			feedbackLabel.SetText(err.Error())
+			tokenField.SetFocus()
+			tokenField.SelectAll()
+		} else {
+			onAuth()
+		}
+	})
+
+	return &Widget{
+		W: form,
+	}
+}

gui/authform/authform.ui

+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CalculatorForm</class>
+ <widget class="QWidget" name="CalculatorForm">
+  <property name="enabled">
+   <bool>true</bool>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>592</width>
+    <height>340</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string>Calculator Builder</string>
+  </property>
+  <layout class="QGridLayout">
+   <property name="margin">
+    <number>9</number>
+   </property>
+   <property name="spacing">
+    <number>6</number>
+   </property>
+   <item row="0" column="0">
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QLabel" name="authLabel">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>50</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>16777215</width>
+         <height>100</height>
+        </size>
+       </property>
+       <property name="text">
+        <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-size:20pt;&quot;&gt;Authentication&lt;/span&gt;&lt;/p&gt;&lt;p&gt;Please check your mails and copy/paste the authentication token to continue.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+       </property>
+       <property name="alignment">
+        <set>Qt::AlignCenter</set>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <layout class="QFormLayout" name="formLayout">
+       <property name="fieldGrowthPolicy">
+        <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
+       </property>
+       <property name="formAlignment">
+        <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+       </property>
+       <property name="horizontalSpacing">
+        <number>30</number>
+       </property>
+       <property name="verticalSpacing">
+        <number>10</number>
+       </property>
+       <property name="leftMargin">
+        <number>50</number>
+       </property>
+       <property name="rightMargin">
+        <number>50</number>
+       </property>
+       <item row="0" column="0">
+        <widget class="QLabel" name="tokenLabel">
+         <property name="text">
+          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Token&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QLineEdit" name="tokenField"/>
+       </item>
+       <item row="1" column="0">
+        <widget class="QPushButton" name="authButton">
+         <property name="text">
+          <string>Authenticate</string>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="1">
+        <widget class="QLabel" name="feedbackLabel">
+         <property name="text">
+          <string/>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

gui/config/config.go

@@ -24,6 +24,7 @@ const ConfigFile = "config.json"
 
 // Config is the structure that will be persisted in the configuration file
 type Config struct {
+	Email    string
 	Platform string
 
 	// Virtual-only fields

gui/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"dfss"
+	"dfss/gui/authform"
 	"dfss/gui/config"
 	"dfss/gui/userform"
 	"github.com/visualfc/goqt/ui"
@@ -11,16 +12,34 @@ const WIDTH = 650
 const HEIGHT = 350
 
 func main() {
-
 	// Load configuration
 	conf := config.Load()
 
 	// Start first window
 	ui.Run(func() {
-		form := userform.NewWidget(&conf)
-
 		layout := ui.NewVBoxLayout()
-		layout.AddWidget(form.W)
+
+		var newuser *userform.Widget
+		var newauth *authform.Widget
+
+		newauth = authform.NewWidget(&conf, func() {
+			layout.RemoveWidget(newauth.W)
+			newauth.W.Hide()
+		})
+
+		newuser = userform.NewWidget(&conf, func(pwd string) {
+			layout.RemoveWidget(newuser.W)
+			newuser.W.Hide()
+			layout.AddWidget(newauth.W)
+		})
+
+		if conf.Authenticated {
+			// TODO
+		} else if conf.Registered {
+			layout.AddWidget(newauth.W)
+		} else {
+			layout.AddWidget(newuser.W)
+		}
 
 		w := ui.NewWidget()
 		w.SetLayout(layout)

gui/userform/userform.go

@@ -12,7 +12,7 @@ type Widget struct {
 	W *ui.QWidget
 }
 
-func NewWidget(conf *config.Config) *Widget {
+func NewWidget(conf *config.Config, onRegistered func(pw string)) *Widget {
 	file := ui.NewFileWithName(":/userform/userform.ui")
 	loader := ui.NewUiLoader()
 	form := loader.Load(file)
@@ -52,7 +52,9 @@ func NewWidget(conf *config.Config) *Widget {
 		if err != nil {
 			feedbackLabel.SetText(err.Error())
 		} else {
+			conf.Email = emailField.Text()
 			conf.Platform = hostField.Text()
+			onRegistered(passwordField.Text())
 			config.Save(*conf)
 		}
 		form.SetDisabled(false)