Amr Gharbeia
3bb797ab9e
- Add providers-configured-p function (daemon-side detection) - Add welcome log messages when no LLM providers configured - Rewrite config panel with 4 interactive sections (Providers, Cascade, Models, View) - Add first-run welcome messages in TUI chat on connect - Fix config-render-models paren balance
17 KiB
17 KiB
Passepartout TUI Client
Architectural Intent
The TUI Client is a Croatoan-based ncurses chat interface for Passepartout. It connects to the daemon over TCP, displays messages in a scrollable window, and provides a mini-buffer-style configuration panel (F2) for managing providers, cascade, and model picks.
Layout
``` ┌─ Status bar (3 rows) ──────────────────────────────────┐ ├─ Chat area (expandable/contractable) ──────────────────┤ ├─ Config mini-buffer (0-12 rows, visible when F2 open) ─┤ │ [1] Providers [2] Cascade [3] Models [4] View [q] │ │ Provider Status Model │ │ openrouter ✓ │ │ groq ✓ │ │ enter API key for openai: ████████ │ ├─ Input line (1 row) ───────────────────────────────────┤ └────────────────────────────────────────────────────────┘ ```
Implementation
State
(in-package :passepartout)
(defvar *stream* nil "TCP stream to daemon")
(defvar *input-buffer* nil "Current input line as reversed char list")
(defvar *input-history* nil "Sent messages (newest first)")
(defvar *input-history-pos* 0 "Position in input history for nav")
(defvar *chat-history* nil "List of (direction . text) entries")
(defvar *chat-scroll-pos* 0 "How many lines from bottom we scrolled up")
(defvar *is-running* t "Main loop flag")
(defvar *tui-mode* :chat "Current mode: :chat or :config")
(defvar *config-selection* 0 "Selected menu item in config panel")
(defvar *config-panel-height* 10 "Height of config panel when open")Protocol helpers
(defun send-message (stream msg)
"Send a framed s-expression over TCP."
(let* ((sexp (format nil "(~a)" msg))
(len (length sexp))
(header (format nil "~6,'0x" len)))
(write-sequence (babel:string-to-octets (concatenate 'string header sexp)) stream)
(force-output stream)
(log-message "SENT: ~a" sexp)))
(defun read-message (stream)
"Read a framed s-expression from TCP."
(handler-case
(let* ((header (make-array 6 :element-type '(unsigned-byte 8)))
(read (read-sequence header stream)))
(when (< read 6) (return-from read-message nil))
(let* ((hex (babel:octets-to-string header))
(len (parse-integer hex :radix 16 :junk-allowed t))
(buf (make-array len :element-type '(unsigned-byte 8))))
(read-sequence buf stream)
(read-from-string (babel:octets-to-string buf))))
(error () nil)))Message queue (for background reader thread)
(defvar *message-queue* nil
"List of incoming daemon messages from reader thread.")
(defvar *message-queue-lock* (bt:make-lock "msg-queue-lock")
"Lock for thread-safe queue access.")
(defun message-queue-push (msg)
(bt:acquire-lock *message-queue-lock*)
(push msg *message-queue*)
(bt:release-lock *message-queue-lock*))
(defun message-queue-drain ()
"Drain all messages from queue. Returns list in FIFO order."
(bt:acquire-lock *message-queue-lock*)
(let ((msgs (nreverse *message-queue*)))
(setf *message-queue* nil)
(bt:release-lock *message-queue-lock*)
msgs))
(defun reader-thread (stream)
"Background thread: reads daemon messages and enqueues them."
(loop while *is-running*
do (let ((msg (read-message stream)))
(when msg
(message-queue-push msg)))))Input rendering
(defun input-text ()
"Convert input buffer to string."
(coerce (reverse *input-buffer*) 'string))
(defun input-backspace ()
(when *input-buffer* (pop *input-buffer*)))
(defun input-submit (stream)
"Send current input buffer content to daemon."
(let ((text (string-trim '(#\Space) (input-text))))
(when (> (length text) 0)
(push text *input-history*)
(setf *input-history-pos* 0)
(send-message stream text)
(push (cons :sent text) *chat-history*)
(setf *input-buffer* nil))))
(defun input-history-nav (dir)
"Navigate input history. Returns new value or nil."
(let ((len (length *input-history*)))
(when (= len 0) (return-from input-history-nav nil))
(case dir
(:up (if (< *input-history-pos* (1- len))
(incf *input-history-pos*)
nil))
(:down (if (> *input-history-pos* 0)
(decf *input-history-pos*)
(progn (setf *input-history-pos* 0) nil)))))
(when (>= *input-history-pos* 0)
(nth *input-history-pos* *input-history*)))Display helpers
(defun timestamp ()
"Return HH:MM timestamp string."
(multiple-value-bind (h m) (get-decoded-time)
(format nil "~2,'0d:~2,'0d" h m)))
(defun status-render (win)
"Draw the status bar."
(let ((h (or (height win) 3))
(w (or (width win) 78)))
(clear win)
(box win 0 0)
(add-string win 1 1 (format nil " Passepartout ~a [~a] msgs:~a scroll:~a"
(if *stream* "● Connected" "○ Disconnected")
(ecase *tui-mode* (:chat "CHAT") (:config "CONFIG"))
(length *chat-history*)
(if (> *chat-scroll-pos* 0) (format nil "~a↑" *chat-scroll-pos*) "0")))
(add-string win 2 1 (format nil " ~a" (timestamp)))
(refresh win)))
(defun chat-render (win h)
"Draw the chat history within WIN of height H."
(clear win)
(box win 0 0)
(let* ((max-lines (- h 2))
(total (length *chat-history*))
(start (max 0 (- total max-lines *chat-scroll-pos*)))
(y 1))
(loop for i from start below total
do (let ((entry (nth i *chat-history*)))
(when (and (< y (1- h)) (car entry))
(let* ((dir (car entry))
(text (cdr entry))
(prefix (if (eq dir :sent) "⬆" "⬇"))
(label (format nil "~a [~a] ~a" prefix (timestamp) text)))
(add-string win 1 y label)
(incf y))))))
(refresh win))
(defun input-render (win)
"Draw the input line."
(clear win)
(add-string win 0 0 (input-text))
(refresh win))Config panel
(defun config-provider-line (provider)
"Return formatted provider line: ' ✓ openrouter' or ' ✗ openrouter'."
(format nil " ~:[✗~;✓~] ~(~a~)" (provider-available-p provider) provider))
(defun config-render (win)
"Draw the config mini-buffer panel with menu and provider overview."
(let ((w (or (width win) 78)))
(clear win)
(box win 0 0)
(add-string win 1 1 "[1] Providers [2] Cascade [3] Models [4] View [q] Back")
(add-string win 2 1 (format nil " Set provider: ~a"
(mapcar #'config-provider-line *provider-cascade*)))
;; Show unconfigured but available providers on line 3-8
(let ((y 3)
(unconf (remove-if (lambda (p) (provider-available-p p))
(mapcar #'car *provider-configs*)))
(conf (count-if #'provider-available-p (mapcar #'car *provider-configs*))))
(add-string win 1 (- w 14) (format nil "~a/~a active" conf (length *provider-configs*)))
(when (zerop conf)
(add-string win y 1 "** No providers configured. Press 1 to set up.")
(incf y))
(when unconf
(add-string win y 1 (format nil "Available: ~{~a~^, ~}"
(mapcar (lambda (k) (string-downcase (string k))) unconf)))
(incf y))
(add-string win y 1 (format nil "Free tier: openrouter (openrouter.ai), gemma-4 from google"))
(refresh win)))
(defun config-render-providers (win)
"Show all providers with availability status."
(let ((w (or (width win) 78)))
(clear win)
(box win 0 0)
(add-string win 1 1 "[1] Providers [2] Cascade [3] Models [4] View [q] Back")
(add-string win 2 1 " Provider Status Key Env")
(loop for entry in *provider-configs*
for i from 3
do (let* ((provider (car entry))
(config (cdr entry))
(avail (provider-available-p provider))
(key-env (or (getf config :key-env) (getf config :url-env) "--")))
(add-string win i 1 (format nil " ~:[ ✗~; ✓~] ~20@(~a~) ~a" avail provider key-env))))
(refresh win)))
(defun config-render-cascade (win)
"Show current PROVIDER_CASCADE."
(let ((w (or (width win) 78)))
(clear win)
(box win 0 0)
(add-string win 1 1 "[1] Providers [2] Cascade [3] Models [4] View [q] Back")
(add-string win 2 1 (format nil " Cascade order: ~{~a~^ → ~}"
(mapcar (lambda (k) (string-downcase (string k))) *provider-cascade*)))
(add-string win 3 1 " Set PROVIDER_CASCADE in .env to reorder.")
(refresh win)))
(defun config-render-models (win)
"Show per-slot model recommendations."
(let ((w (or (width win) 78)))
(clear win)
(box win 0 0)
(add-string win 1 1 "[1] Providers [2] Cascade [3] Models [4] View [q] Back")
(let ((y 2))
(dolist (slot '(:code :chat :plan :background))
(add-string win y 1 (format nil " ~:@(~a~)" slot))
(incf y)
(let ((desc (cdr (or (assoc slot *slot-descriptions*) '(:fallback . "General purpose")))))
(add-string win y 1 (subseq desc 0 (min (length desc) (- w 4))))
(incf y))
(dolist (rec (model-explorer-recommend slot))
(let ((label (format nil " ~a (~a ctx)"
(getf rec :name)
(if (getf rec :context) (format nil "~dK" (floor (getf rec :context) 1000)) "?"))))
(add-string win y 1 (subseq label 0 (min (length label) (- w 4))))
(incf y))))))
(refresh win)))
(defun config-render-view (win)
"Show current system configuration."
(let ((w (or (width win) 78)))
(clear win)
(box win 0 0)
(add-string win 1 1 "[1] Providers [2] Cascade [3] Models [4] View [q] Back")
(add-string win 2 1 (format nil " Active backends: ~a"
(loop for k being the hash-keys of *probabilistic-backends* collect k)))
(add-string win 3 1 (format nil " Cascade: ~{~a~^, ~}"
(mapcar (lambda (k) (string-downcase (string k))) *provider-cascade*)))
(add-string win 4 1 (format nil " Model selector: ~a" (if (boundp '*model-selector*) (symbol-value '*model-selector*) "none")))
(refresh win)))Connection
(defun connect-daemon (&optional (host "127.0.0.1") (port 9105))
"Connect to daemon."
(handler-case
(let ((s (usocket:socket-connect host port :element-type '(unsigned-byte 8))))
(setf *stream* (usocket:socket-stream s))
(setf *message-queue* nil)
(bt:make-thread (lambda () (reader-thread *stream*)) :name "tui-reader")
(push (cons :system "* Connected *") *chat-history*)
(log-message "Connected to ~a:~a" host port)
t)
(error (c)
(push (cons :system (format nil "* Connection failed: ~a *" c)) *chat-history*)
nil)))
(defun disconnect-daemon ()
"Disconnect from daemon."
(when *stream*
(ignore-errors (close *stream*))
(setf *stream* nil)
(push (cons :system "* Disconnected *") *chat-history*)))Main event loop
(defun tui-main ()
"Entry point for the TUI client."
(with-screen (scr :input-blocking nil :input-echoing nil :cursor-visible nil)
(let* ((h (or (height scr) 24))
(w (or (width scr) 80))
(input-h 1)
(config-h 0)
(chat-h (- h input-h config-h 3))
(status-win (make-instance 'window :height 3 :width (- w 2) :y 0 :x 1))
(chat-win (make-instance 'window :height chat-h :width (- w 2) :y 3 :x 1))
(config-win (make-instance 'window :height 0 :width (- w 2) :y (- h input-h config-h 1) :x 1))
(input-win (make-instance 'window :height 1 :width (- w 2) :y (- h 1) :x 1)))
(setf *is-running* t *tui-mode* :chat *input-buffer* nil)
(connect-daemon)
;; First-run: no providers configured → show welcome
(when (zerop (hash-table-count *probabilistic-backends*))
(push (cons :system "* Welcome to Passepartout! *") *chat-history*)
(push (cons :system "No LLM providers configured. Press F2 to open the config panel, then [1] Providers to set up.") *chat-history*)
(push (cons :system "For free online models, set OPENROUTER_API_KEY in your .env (or via the TUI).") *chat-history*))
(setf *chat-scroll-pos* 0)
(status-render status-win)
(chat-render chat-win chat-h)
(input-render input-win)
(loop :while *is-running* :do
;; drain message queue
(dolist (msg (message-queue-drain))
(push (cons :received (let ((p (proto-get msg :payload)))
(or (proto-get p :text) (format nil "~a" msg))))
*chat-history*))
;; handle input
(let ((ch (get-char input-win)))
(when (and ch (not (equal ch -1)))
(cond
;; F2: toggle config panel
((or (eq ch :f2) (and (integerp ch) (= ch 265)))
(if (eq *tui-mode* :chat)
(progn
(setf *tui-mode* :config)
(setf *config-panel-height* 10)
(setf config-h *config-panel-height*)
(setf chat-h (- h input-h config-h 3))
(resize chat-win chat-h (- w 2))
(resize config-win config-h (- w 2))
(config-render config-win))
(progn
(setf *tui-mode* :chat)
(setf config-h 0)
(setf chat-h (- h input-h 3))
(resize chat-win chat-h (- w 2))
(resize config-win 0 (- w 2))
(chat-render chat-win chat-h)))
(status-render status-win))
;; Config mode key handling
((eq *tui-mode* :config)
(cond
((or (eql ch #\q) (eql ch #\Q))
(setf *tui-mode* :chat config-h 0 chat-h (- h input-h 3))
(resize chat-win chat-h (- w 2))
(resize config-win 0 (- w 2))
(chat-render chat-win chat-h)
(status-render status-win))
((eql ch #\1)
(config-render-providers config-win))
((eql ch #\2)
(config-render-cascade config-win))
((eql ch #\3)
(config-render-models config-win))
((eql ch #\4)
(config-render-view config-win))))
(status-render status-win))
;; Chat mode key handling
(t
(cond
;; Enter/Return submit
((or (eql ch 10) (eql ch 13) (eq ch :enter) (eql ch #\Newline) (eql ch #\Return))
(setf *chat-scroll-pos* 0)
(input-submit *stream*)
(chat-render chat-win chat-h)
(input-render input-win)
(status-render status-win))
;; Backspace
((or (eql ch 127) (eql ch 8) (eq ch :backspace) (eql ch #\Backspace))
(input-backspace)
(input-render input-win))
;; Up arrow
((or (eq ch :up) (eql ch 259))
(let ((prev (input-history-nav :up)))
(when prev
(setf *input-buffer* (reverse (coerce prev 'list)))
(input-render input-win))))
;; Down arrow
((or (eq ch :down) (eql ch 258))
(let ((next (input-history-nav :down)))
(if next
(setf *input-buffer* (reverse (coerce next 'list)))
(setf *input-buffer* nil))
(input-render input-win)))
;; Page Up
((or (eq ch :ppage) (eql ch 339))
(setf *chat-scroll-pos* (+ *chat-scroll-pos* 10))
(chat-render chat-win chat-h)
(status-render status-win))
;; Page Down
((or (eq ch :npage) (eql ch 338))
(setf *chat-scroll-pos* (max 0 (- *chat-scroll-pos* 10)))
(chat-render chat-win chat-h)
(status-render status-win))
;; Printable character
((characterp ch)
(push ch *input-buffer*)
(input-render input-win))
;; Integer key code
((integerp ch)
(let ((converted (code-char ch)))
(when (and converted (graphic-char-p converted))
(push converted *input-buffer*)
(input-render input-win))))))))
(refresh scr)
(sleep 0.01))
(disconnect-daemon))))