Progress commit

- Slynk server
- Formatting output
- wait-for-clack-handler
- The WebSocket snippet from
  https://lispcookbook.github.io/cl-cookbook/websockets.html
  adatpted instead of hx-sse extension
- Persistent bottom navbar
- white-space: nowrap

live-chat-main.lisp

@@ -20,11 +20,12 @@
 ;; Start the chat server
 (defun start-chat-server (&rest args &key (address "localhost") (port 8080) &allow-other-keys)
   "Start the Clack chat server."
+  (slynk:create-server :port 4005 :dont-close t)
   (setf *handler*
         (apply #'clack:clackup *app*
                :port port :host address args))
   (when *handler*
-    (format t "Chat server started on ~A port ~A~%" address port)))
+    (format t ";; Chat server started on ~A port ~A~%" address port)))
 
 (defun stop-chat-server (&rest args)
   (declare (ignore args))
@@ -33,20 +34,22 @@
         (clack:stop *handler*)
       (setf *handler* nil)))
   (unless *handler*
-    (format t "Chat server stopped.~%")))
+    (format t ";; Chat server stopped.~%")))
 
 (defun restart-chat-server (&rest args)
   (apply #'stop-chat-server args)
   (apply #'start-chat-server args))
 
-(defun main (&rest args &key (foreground nil) &allow-other-keys)
+(defun main (&rest args &key (foreground t) &allow-other-keys)
-  (progn
   (setf (cl-who:html-mode) :html5)
   (create-messages-table)
-    (apply #'restart-chat-server args)))
+  (apply #'start-chat-server args)
+  (print (bt:all-threads))
+  (if foreground
+      (wait-for-clack-handler "clack-handler-")))
 
 ;; https://stackoverflow.com/a/30424968
-(defun wait-for-hunchentoot-listener (name)
+(defun wait-for-clack-handler (name)
   (bt:join-thread
    (find-if
     (lambda (th)

live-chat-ui.lisp

@@ -29,6 +29,7 @@
   "Render the main chat page with HTMX integration."
   (cl-who:with-html-output-to-string (*standard-output* nil :prologue t :indent t)
     (:html :lang "en"
+           :class "has-navbar-fixed-bottom"
            (:head
             (:meta :charset "utf-8")
             (:meta :name "viewport" :content "width=device-width, initial-scale=1")
@@ -42,14 +43,26 @@
                      :integrity "sha512-dQu3OKLMpRu85mW24LA1CUZG67BgLPR8Px3mcxmpdyijgl1UpCM1RtJoQP6h8UkufSnaHVRTUx98EQT9fcKohw=="
                      :crossorigin "anonymous"
                      :referrerpolicy "no-referrer")
-            (:script :src "https://cdnjs.cloudflare.com/ajax/libs/htmx/2.0.3/ext/ws.min.js"
+            ;; (:script :src "https://cdnjs.cloudflare.com/ajax/libs/htmx/2.0.3/ext/ws.min.js"
-                     :integrity "sha512-1OIiXEswZd/etj60BUwFmyoi0OhrWdoYlzayJpSBivoMV0pQPIQr+vtAn3W3htsbWtLRU8DrBl0epdK4DQbj/w=="
+            ;;          :integrity "sha512-1OIiXEswZd/etj60BUwFmyoi0OhrWdoYlzayJpSBivoMV0pQPIQr+vtAn3W3htsbWtLRU8DrBl0epdK4DQbj/w=="
-                     :crossorigin "anonymous"
+            ;;          :crossorigin "anonymous"
-                     :referrerpolicy "no-referrer"))
+            ;;          :referrerpolicy "no-referrer")
+            )
            (:body
             (:section :class "section"
                       (:div :class "container"
-                            (:h1 :class "title" "Live Chat")
+                            ;; :hx-ext "ws"
+                            ;; :ws-connect (subpath-prefix "/ws-chat-messages")
+                            (:div :class "container"
+                                  :id "chat-messages"
+                                  ;; :hx-get "/chat-messages"
+                                  (cl-who:str (render-chat-messages)))))
+            (:nav :role "navigation"
+                  :class "navbar is-fixed-bottom is-spaced has-shadow"
+                  (:div :class "navbar-menu is-active"
+                        :id "navbarBasicExample"
+                        (:div :class "navbar-start")
+                        (:div :class "container"
                               (:div :class "field has-addons"
                                     (:div :class "control is-expanded"
                                           (:input :class "input is-expanded"
@@ -59,34 +72,34 @@
                                                   :type "text" :name "message"))
                                     (:div :class "control"
                                           (:button :class "button is-link is-light"
-                                                 :type "submit" "Send")))))
+                                                   :type "submit" "Send"))))
-            (:section :class "section"
+                        (:div :class "navbar-end")))
-                      (:div :class "container"
+            (:script (cl-who:str (js-snippet (subpath-prefix "/ws-chat-messages"))))))))
-                            :hx-ext "ws"
-                            :ws-connect (subpath-prefix "/ws-chat-messages")
-                            (:h3 :class "title is-3" "Chat Messages")
-                            (:div :class "container"
-                                  :id "chat-messages"
-                                  :hx-get "/chat-messages"
-                                  (cl-who:str (render-chat-messages)))))
-            (:script "
-////////////////////////////////////////////////////////////////////////////////
 
-function receivedMessage(msg) {
+(defun js-snippet (path)
-    document.querySelector('#chat-messages')
+  (format nil
-        .insertAdjacentHTML('afterbegin', msg.data);
+          "function receivedMessage(msg) {
+    document.querySelector('#chat-messages').insertAdjacentHTML('afterbegin', msg.data);
 }
-
+const ws = new WebSocket('wss://' + window.location.host + '~a');
-// TODO {{ server-name }}:{{ server-port }}
-const ws = new WebSocket('ws://' + window.location.host + '/ws-chat-messages');
 ws.addEventListener('message', receivedMessage);
-
-////////////////////////////////////////////////////////////////////////////////
-
 const inputField = document.getElementById('chat-input');
 inputField.addEventListener('keyup', (evt) => {
     if (evt.key === 'Enter') {
         ws.send(evt.target.value);
         evt.target.value = '';
     }
-});")))))
+});
+// https://bulma.io/documentation/components/navbar/#navbar-menu
+document.addEventListener('DOMContentLoaded', () => {
+  const $navbarBurgers = Array.prototype.slice.call(document.querySelectorAll('.navbar-burger'), 0);
+  // Add a click event on each of them
+  $navbarBurgers.forEach( el => {
+    el.addEventListener('click', () => {
+      const target = el.dataset.target;
+      const $target = document.getElementById(target);
+      el.classList.toggle('is-active');
+      $target.classList.toggle('is-active');
+    });
+  });
+});" path))

live-chat-ws.lisp

@@ -17,6 +17,7 @@
   (let ((message
           (cl-who:with-html-output-to-string (*standard-output*)
             (:div :class "box"
+                  :style "overflow: auto; white-space: nowrap;"
                   (format t "~a: ~a" (gethash connection *connections*) message)))))
     (loop :for con :being :the :hash-key :of *connections* :do
       (send con message))))
@@ -25,6 +26,7 @@
   (let ((message 
           (cl-who:with-html-output-to-string (*standard-output*)
             (:div :class "box"
+                  :style "overflow: auto; white-space: nowrap;"
                   (format t "... ~a disconnected."
                           (gethash connection *connections*))))))
     (loop :for con :being :the :hash-key :of *connections* :do

live-chat.asd

@@ -15,6 +15,7 @@
                #:clack
                #:lack
                #:ningle
+               #:slynk
                ;; WebSocket chat server backend
                #:websocket-driver)
   :components ((:file "package")

package.lisp

@@ -63,4 +63,3 @@
                  #:live-chat-routes))
 
 (in-package #:live-chat)
-