greeter: init greeter

shell/greeter/GreeterContext.qml

@@ -0,0 +1,39 @@
+import QtQuick
+import Quickshell
+import Quickshell.Services.Greetd
+import "../lockscreen"
+
+Scope {
+    id: root
+    signal launch
+
+    property LockState state: LockState {
+        onTryUnlock: {
+            this.unlockInProgress = true;
+
+            // TODO: env var for user 
+            Greetd.createSession("koss");
+        }
+    }
+
+    Connections {
+        target: Greetd
+
+        function onAuthMessage(message: string, error: bool, responseRequired: bool, echoResponse: bool) {
+            if (responseRequired) {
+                Greetd.respond(root.state.currentText);
+            } // else ignore - only supporting passwords
+        }
+
+        function onAuthFailure() {
+            root.state.currentText = "";
+            root.state.failed();
+            root.state.unlockInProgress = false;
+        }
+
+        function onReadyToLaunch() {
+            root.state.unlockInProgress = false;
+            root.launch();
+        }
+    }
+}