Start rewriting backend with pyotherside+asyncio

src/qml/Pages/Default.qml

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+import "../Base"
+
+HNoticePage {
+    text: "Select or add a room to start."
+}

src/qml/Pages/RememberAccount.qml

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+import QtQuick 2.7
+import QtQuick.Layouts 1.3
+import "../Base"
+
+Item {
+    property string loginWith: "username"
+    property var client: null
+
+    HInterfaceBox {
+        id: rememberBox
+        title: "Sign in"
+        anchors.centerIn: parent
+
+        enterButtonTarget: "yes"
+
+        buttonModel: [
+            { name: "yes", text: qsTr("Yes") },
+            { name: "no", text: qsTr("No") },
+        ]
+
+        buttonCallbacks: {
+            "yes": function(button) {
+                Backend.clients.remember(client)
+                pageStack.showPage("Default")
+            },
+            "no": function(button) { pageStack.showPage("Default") },
+        }
+
+        HLabel {
+            text: qsTr(
+                "Do you want to remember this account?\n\n" +
+                "If yes, the " + loginWith + " and an access token will be " +
+                "stored to automatically sign in on this device."
+            )
+            wrapMode: Text.Wrap
+
+            Layout.margins: rememberBox.margins
+            Layout.maximumWidth: rememberBox.width - Layout.margins * 2
+        }
+
+        HSpacer {}
+    }
+}

src/qml/Pages/SignIn.qml

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+import QtQuick 2.7
+import QtQuick.Layouts 1.3
+import "../Base"
+
+Item {
+    property string loginWith: "username"
+    onFocusChanged: identifierField.forceActiveFocus()
+
+    HInterfaceBox {
+        id: signInBox
+        title: "Sign in"
+        anchors.centerIn: parent
+
+        enterButtonTarget: "login"
+
+        buttonModel: [
+            { name: "register", text: qsTr("Register") },
+            { name: "login", text: qsTr("Login") },
+            { name: "forgot", text: qsTr("Forgot?") }
+        ]
+
+        buttonCallbacks: {
+            "register": function(button) {},
+
+            "login": function(button) {
+                var future = Backend.clients.new(
+                    "matrix.org", identifierField.text, passwordField.text
+                )
+                button.loadingUntilFutureDone(future)
+                future.onGotResult.connect(function(client) {
+                    pageStack.showPage(
+                        "RememberAccount",
+                        {"loginWith": loginWith, "client": client}
+                    )
+                })
+            },
+
+            "forgot": function(button) {}
+        }
+
+        HRowLayout {
+            spacing: signInBox.margins * 1.25
+            Layout.margins: signInBox.margins
+            Layout.alignment: Qt.AlignHCenter
+
+            Repeater {
+                model: ["username", "email", "phone"]
+
+                HButton {
+                    iconName: modelData
+                    circle: true
+                    checked: loginWith == modelData
+                    autoExclusive: true
+                    checkedLightens: true
+                    onClicked: loginWith = modelData
+                }
+            }
+        }
+
+        HTextField {
+            id: identifierField
+            placeholderText: qsTr(
+                loginWith === "email" ? "Email" :
+                loginWith === "phone" ? "Phone" :
+                "Username"
+            )
+            onAccepted: signInBox.clickEnterButtonTarget()
+
+            Layout.fillWidth: true
+            Layout.margins: signInBox.margins
+        }
+
+        HTextField {
+            id: passwordField
+            placeholderText: qsTr("Password")
+            echoMode: HTextField.Password
+            onAccepted: signInBox.clickEnterButtonTarget()
+
+            Layout.fillWidth: true
+            Layout.margins: signInBox.margins
+        }
+    }
+}