noctalia-shell/Modules/LockScreen/LockContext.qml

import QtQuick
import Quickshell
import Quickshell.Services.Pam

Scope {
    id: root
    signal unlocked()
    signal failed()

    property string currentText: ""
    property bool unlockInProgress: false
    property bool showFailure: false
    property string errorMessage: ""
    property bool pamAvailable: typeof PamContext !== "undefined"

    onCurrentTextChanged: {
        if (currentText !== "") {
            showFailure = false;
            errorMessage = "";
        }
    }

    function tryUnlock() {
        if (!pamAvailable) {
            errorMessage = "PAM not available";
            showFailure = true;
            return;
        }

        if (currentText === "") {
            errorMessage = "Password required";
            showFailure = true;
            return;
        }

        root.unlockInProgress = true;
        errorMessage = "";
        showFailure = false;
        
        console.log("Starting PAM authentication for user:", pam.user);
        pam.start();
    }

    PamContext {
        id: pam
        config: "login"
        user: Quickshell.env("USER")

        onPamMessage: {
            console.log("PAM message:", message, "isError:", messageIsError, "responseRequired:", responseRequired);
            
            if (messageIsError) {
                errorMessage = message;
            }
            
            if (responseRequired) {
                console.log("Responding to PAM with password");
                respond(root.currentText);
            }
        }

        onResponseRequiredChanged: {
            console.log("Response required changed:", responseRequired);
            if (responseRequired && root.unlockInProgress) {
                console.log("Automatically responding to PAM");
                respond(root.currentText);
            }
        }

        onCompleted: {
            console.log("PAM completed with result:", result);
            if (result === PamResult.Success) {
                console.log("Authentication successful");
                root.unlocked();
            } else {
                console.log("Authentication failed");
                errorMessage = "Authentication failed";
                showFailure = true;
                root.failed();
            }
            root.unlockInProgress = false;
        }

        onError: {
            console.log("PAM error:", error, "message:", message);
            errorMessage = message || "Authentication error";
            showFailure = true;
            root.unlockInProgress = false;
            root.failed();
        }
    }
}