ags(scripts): add auth script (unfinished)

ags/scripts/auth.ts

@@ -0,0 +1,73 @@
+import { execAsync, Gio, GLib, register } from "astal";
+import Polkit from "gi://Polkit";
+import PolkitAgent from "gi://PolkitAgent";
+import { EntryPopup, EntryPopupProps } from "../widget/EntryPopup";
+import AstalAuth from "gi://AstalAuth";
+import { AskPopup, AskPopupProps } from "../widget/AskPopup";
+
+export { Auth };
+
+@register({ GTypeName: "AuthAgent" })
+class Auth extends PolkitAgent.Listener {
+    private static instance: Auth;
+    #subject: Polkit.Subject;
+
+    constructor() {
+        super();
+        this.#subject = Polkit.UnixSession.new(GLib.get_user_name());
+
+        this.register(PolkitAgent.RegisterFlags.NONE, 
+            this.#subject, 
+            "/io/github/retrozinndev/Colorshell/PolicyKit/AuthAgent", 
+            null
+        );
+    }
+
+    vfunc_dispose() {
+        PolkitAgent.Listener.unregister();
+    }
+
+    static initiate_authentication(action_id: string, message: string, icon_name: string, details: Polkit.Details, cookie: string, identities: Array<Polkit.Identity>, cancellable?: Gio.Cancellable, callback?: Gio.AsyncReadyCallback): void | Promise<boolean> {
+        const authPopup = EntryPopup({
+            title: "Authentication",
+            text: message,
+            isPassword: true,
+            onFinish: callback,
+            onCancel: () => cancellable?.cancel(),
+            closeOnAccept: false,
+            onAccept: (input: string) => {
+                if(this.validatePasswd(input)) {
+                    authPopup.close();
+                }
+                AskPopup({
+
+                } as AskPopupProps)
+            }
+        } as EntryPopupProps);
+    }
+
+
+    public static initAgent(): Auth {
+        if(!this.instance)
+            this.instance = new Auth();
+
+        return this.instance;
+    }
+
+    private static validatePasswd(passwd: string): boolean {
+        return AstalAuth.Pam.authenticate(passwd, null);
+    }
+
+    /** @returns if successful, true, or else, false */
+    public async polkitExecute(cmd: string | Array<string>): Promise<boolean> {
+        let success: boolean = true;
+        await execAsync([ "pkexec", "--", ...(Array.isArray(cmd) ? 
+          cmd as Array<string> : [ cmd as string ]) ]
+        ).catch((r) => {
+            success = false;
+            console.error(`Polkit: Couldn't authenticate. Stderr: ${r}`);
+        });
+
+        return success;
+    }
+}