(in-package :passepartout.channel-tui)

(defun on-key (&rest args)
  ;; Normalize: get-char returns raw ncurses integer codes (e.g. 263 for
  ;; backspace). Croatoan's code-key + key-name convert them to keywords
  ;; so the cond below can use eq.
  (let* ((raw (car args))
         (ch (if (and (integerp raw) (> raw 255))
                 (let* ((k (code-key raw))
                        (name (and k (key-name k))))
                   (or name raw))
                 raw)))
    (cond
       ;; v0.7.1: Esc — interrupt streaming
       ((and (eql ch 27) (st :streaming-text))
        (send-daemon (list :type :event :payload '(:action :cancel-stream)))
        (when (> (length (st :messages)) 0)
          (let ((idx (1- (length (st :messages)))))
            (setf (getf (aref (st :messages) idx) :content)
                  (concatenate 'string
                               (getf (aref (st :messages) idx) :content)
                               " [interrupted]"))
            (setf (getf (aref (st :messages) idx) :streaming) nil)
            (setf (getf (aref (st :messages) idx) :time) (now))))
        (setf (st :streaming-text) nil)
        (setf (st :busy) nil)
        (setf (st :dirty) (list t t nil)))
       ;; v0.7.1: Tab on empty input — extract then open URL from agent message
       ((and (or (eql ch 9) (eq ch :tab))
              (null (st :input-buffer)))
        (if (st :url-buffer)
            ;; Already extracted — now open it
            (progn
              (add-msg :system (format nil "Opening ~a" (st :url-buffer)))
              (setf (st :url-buffer) nil))
            ;; Extract URL from last agent message
            (let ((url nil))
              (loop for i from (1- (length (st :messages))) downto 0
                    for msg = (aref (st :messages) i)
                    for content = (getf msg :content)
                    for role = (getf msg :role)
                    while (eq role :agent)
                    when content
                    do (let ((pos (or (search "https://" content) (search "http://" content))))
                         (when pos
                           (let ((end (or (position-if (lambda (c) (find c '(#\Space #\Newline #\Tab #\))))
                                                        content :start pos)
                                          (length content))))
                             (setf url (subseq content pos end))
                             (return)))))
              (if url
                  (progn
                    (setf (st :url-buffer) url)
                    (add-msg :system (format nil "Press Tab to open ~a" url))
                    (setf (st :dirty) (list t t nil)))
                  nil))))
       ;; v0.7.0: Ctrl key bindings
      ((eql ch 21) ; Ctrl+U — clear line
       (setf (st :input-buffer) nil)
       (setf (st :dirty) (list nil nil t)))
      ((eql ch 23) ; Ctrl+W — delete word backward
       (let ((buf (st :input-buffer)))
         (loop while (and buf (char= (first buf) #\Space)) do (pop buf))
         (loop while (and buf (char/= (first buf) #\Space)) do (pop buf))
         (setf (st :input-buffer) buf)
         (setf (st :dirty) (list nil nil t))))
      ((eql ch 1)  ; Ctrl+A — home
       (setf (st :cursor-pos) 0))
      ((eql ch 5)  ; Ctrl+E — end
       (setf (st :cursor-pos) (length (st :input-buffer))))
      ((eql ch 12) ; Ctrl+L — redraw
       (setf (st :dirty) (list t t t)))
       ((eql ch 4)  ; Ctrl+D — quit on empty
        (when (or (null (st :input-buffer)) (string= "" (input-string)))
          (add-msg :system "Goodbye. Run /quit or press Ctrl+D again to exit.")))
       ((eql ch 6)  ; v0.7.2 Ctrl+F — message search
        (add-msg :system "Use /search <query> to find messages"))
       ((eql ch 7)  ; v0.7.2 Ctrl+G — toggle gate trace collapse
        (let ((gate-idx nil))
          (loop for i from (1- (length (st :messages))) downto 0
                for m = (aref (st :messages) i)
                when (and (getf m :gate-trace) (listp (getf m :gate-trace)))
                do (setf gate-idx i) (loop-finish))
          (if gate-idx
              (let ((cg (st :collapsed-gates)))
                (if (member gate-idx cg)
                    (setf (st :collapsed-gates) (remove gate-idx cg))
                    (push gate-idx (st :collapsed-gates)))
                (add-msg :system (format nil "Gate trace ~a for msg ~a"
                                        (if (member gate-idx (st :collapsed-gates)) "hidden" "shown")
                                        gate-idx))
                (setf (st :dirty) (list nil t nil)))
              (add-msg :system "No gate trace to toggle"))))
       ((eql ch 24) ; Ctrl+X prefix
       (setf (st :pending-ctrl-x) t))
      ((and (st :pending-ctrl-x) (eql ch 5)) ; Ctrl+X+E — editor
       (setf (st :pending-ctrl-x) nil)
       (add-msg :system "Opening $EDITOR... save and exit to return.")
       (setf (st :dirty) (list t t nil)))
      ((and (st :pending-ctrl-x) (not (eql ch 5))) ; cancel Ctrl+X
       (setf (st :pending-ctrl-x) nil)
       (on-key ch)
       (return-from on-key nil))
      ;; Enter
      ((or (eq ch :enter) (eql ch 13) (eql ch 10)
           (eql ch #\Newline) (eql ch #\Return))
        ;; Multi-line: if buffer ends with \, strip it and insert newline
        (if (and (st :input-buffer) (eql (first (st :input-buffer)) #\\))
            (progn (pop (st :input-buffer))
                   (push #\Newline (st :input-buffer))
                   (setf (st :dirty) (list nil nil t)))
            (let ((text (string-trim '(#\Space #\Tab) (input-string))))
              (when (> (length text) 0)
                (push text (st :input-history))
                (setf (st :input-hpos) 0)
                (setf (st :scroll-offset) 0)
                (cond
                  ;; v0.7.2: undo/redo
                  ((string-equal text "/undo")
                   (send-daemon (list :type :event :payload (list :sensor :undo)))
                   (add-msg :system "Undo: restoring memory to previous state"))
                  ((string-equal text "/redo")
                   (send-daemon (list :type :event :payload (list :sensor :redo)))
                   (add-msg :system "Redo: restoring memory"))
                  ;; /help command
                  ((and (>= (length text) 9)
                        (string-equal (subseq text 0 9) "/approve "))
                   (let ((token (string-trim '(#\Space) (subseq text 9))))
                     (send-daemon (list :type :event :payload
                                        (list :action :hitl-respond :token token :decision :approved)))
                     (add-msg :system (format nil "Approved: ~a" token))))
                  ((and (>= (length text) 6)
                        (string-equal (subseq text 0 6) "/deny "))
                   (let ((token (string-trim '(#\Space) (subseq text 6))))
                     (send-daemon (list :type :event :payload
                                        (list :action :hitl-respond :token token :decision :denied)))
                     (add-msg :system (format nil "Denied: ~a" token))))
                  ;; /help command
                  ;; /why command — show last gate trace
                  ((string-equal text "/why")
                   (let ((msgs (st :messages))
                         (found nil))
                     (loop for i from (1- (length msgs)) downto 0
                           for m = (aref msgs i)
                           for gt = (getf m :gate-trace)
                           when (and gt (listp gt) (> (length gt) 0))
                           do (setf found t)
                              (dolist (entry gt)
                                (let* ((gate (getf entry :gate))
                                       (result (getf entry :result))
                                       (reason (getf entry :reason))
                                       (msg (format nil "~a ~a~@[ — ~a~]"
                                                    (case result (:passed "[PASS]") (:blocked "[BLOCKED]") (:approval "[HITL]"))
                                                    (or gate "unknown")
                                                    reason)))
                                  (add-msg :system msg)))
                              (loop-finish))
                         (unless found
                           (add-msg :system "No recent gate trace. Run a tool to see gate decisions."))))
                  ;; /identity command — edit and reload identity file
                  ((string-equal text "/identity")
                   (let* ((editor (or (uiop:getenv "EDITOR") "emacs"))
                          (path (merge-pathnames "memex/IDENTITY.org" (user-homedir-pathname))))
                     (add-msg :system (format nil "Opening ~a in ~a..." (namestring path) editor))
                     (uiop:run-program (list editor (namestring path)) :output t :error-output t)
                     (when (fboundp 'load-identity-file)
                       (funcall 'load-identity-file))
                     (add-msg :system "Identity reloaded")))
                  ;; /audit command — Merkle provenance
                  ((and (>= (length text) 7) (string-equal (subseq text 0 7) "/audit "))
                   (if (fboundp 'audit-node)
                       (let* ((node-id (string-trim '(#\Space) (subseq text 7)))
                              (info (funcall 'audit-node node-id)))
                         (if info
                             (add-msg :system (format nil "Node ~a: type=~a scope=~a hash=~a"
                                                     (getf info :id) (getf info :type)
                                                     (getf info :scope)
                                                     (subseq (or (getf info :hash) "(none)") 0 16)))
                             (add-msg :system (format nil "Node ~a not found" node-id))))
                       (add-msg :system "Memory audit not available")))
                  ;; /tags command — tag stack
                  ;; /tags command — tag stack
                  ((string-equal text "/tags")
                   (let ((cats passepartout::*tag-categories*))
                     (if cats
                         (dolist (entry cats)
                           (add-msg :system (format nil "~a: ~a" (car entry) (cdr entry))))
                         (add-msg :system "No tags configured. Set TAG_CATEGORIES env var."))))
                  ;; /context command — context visibility
                  ((string-equal text "/context")
                   (let* ((msg-count (length (st :messages)))
                          (focus (or (st :foveal-id) "none"))
                          (est-tokens (min 8192 (* msg-count 50))))
                     (add-msg :system (format nil "Context: ~d msgs, focus=~a, est ~d/8192 tokens"
                                             msg-count focus est-tokens))
                     (let ((start (max 0 (- msg-count 5))))
                       (loop for i from start below msg-count
                             for m = (aref (st :messages) i)
                             for content = (getf m :content)
                             for preview = (if (> (length content) 50)
                                              (concatenate 'string (subseq content 0 47) "...")
                                              content)
                             for role = (getf m :role)
                             do (add-msg :system (format nil "  ~a: ~a"
                                                         (case role (:user "You") (:agent "Agent") (t "Sys"))
                                                         preview))))))
                  ;; /context why <id> — debug node
                  ((and (>= (length text) 13) (string-equal (subseq text 0 13) "/context why "))
                   (let ((node-id (string-trim '(#\Space) (subseq text 13))))
                     (if (fboundp 'passepartout::memory-object-get)
                         (let ((obj (funcall 'passepartout::memory-object-get node-id)))
                           (if obj
                               (add-msg :system (format nil "Node ~a: type=~a scope=~a version=~a"
                                                       node-id
                                                       (passepartout::memory-object-type obj)
                                                       (passepartout::memory-object-scope obj)
                                                       (passepartout::memory-object-version obj)))
                               (add-msg :system (format nil "Node ~a not found" node-id))))
                         (add-msg :system "Memory not available"))))
                  ;; /context dropped — pruned nodes
                  ((string-equal text "/context dropped")
                   (add-msg :system "Context debugging: dropped nodes view not yet available (v0.8.0)"))
                  ;; /search command — message search
                  ((and (>= (length text) 8) (string-equal (subseq text 0 8) "/search "))
                   (let* ((query (string-downcase (string-trim '(#\Space) (subseq text 8))))
                          (msgs (st :messages))
                          (total (length msgs))
                          (matches nil))
                     (loop for i from 0 below total
                           for m = (aref msgs i)
                           for content = (getf m :content)
                           when (search query (string-downcase content))
                           do (push (list i content) matches))
                     (setf matches (nreverse matches))
                     (if matches
                         (progn
                           (add-msg :system (format nil "Found ~d matches for '~a':" 
                                                   (length matches) query))
                           (dolist (match matches)
                             (let* ((idx (first match))
                                    (content (second match))
                                    (pos (search query (string-downcase content)))
                                    (preview (if (> (length content) 60)
                                                (concatenate 'string
                                                    (subseq content (max 0 (- pos 20)) (min (length content) (+ pos 40)))
                                                    "...")
                                                content)))
                               (add-msg :system (format nil "  #~d: ...~a..." idx preview)))))
                         (add-msg :system (format nil "No matches for '~a'" query)))))
                  ;; /rewind command — session rewind
                  ((and (>= (length text) 8) (string-equal (subseq text 0 8) "/rewind "))
                   (let* ((n-str (string-trim '(#\Space) (subseq text 8)))
                          (n (handler-case (parse-integer n-str) (error () nil))))
                     (if n
                         (if (fboundp 'passepartout::rollback-memory)
                             (let* ((idx (1- n))
                                    (snaps passepartout::*memory-snapshots*)
                                    (ts (when (< idx (length snaps))
                                          (getf (nth idx snaps) :timestamp))))
                               (funcall 'passepartout::rollback-memory idx)
                               (add-msg :system (format nil "Rewound ~d turn~:p~@[ (~a)~]" n ts)))
                             (add-msg :system "Memory rollback not available"))
                         (add-msg :system "Usage: /rewind <number>"))))
                  ;; /sessions command — list snapshots
                  ((string-equal text "/sessions")
                   (let ((snaps passepartout::*memory-snapshots*))
                     (if snaps
                         (let ((shown (subseq snaps 0 (min 10 (length snaps)))))
                           (add-msg :system (format nil "~d snapshots (showing ~d):" 
                                                   (length snaps) (length shown)))
                           (loop for s in shown
                                 for i from 0
                                 for ts = (getf s :timestamp)
                                 for data = (getf s :data)
                                 for size = (hash-table-size data)
                                 do (add-msg :system (format nil "  #~d: ~a objects, timestamp ~d"
                                                             (1+ i) size ts))))
                          (add-msg :system "No snapshots available"))))
                  ;; /audit verify — memory integrity
                  ((string-equal text "/audit verify")
                   (let ((count 0) (hashed 0))
                     (maphash (lambda (k v) (declare (ignore k))
                                     (when v
                                       (incf count)
                                       (when (passepartout::memory-object-hash v)
                                         (incf hashed))))
                              passepartout::*memory-store*)
                     (add-msg :system (format nil "Audit: ~d objects, ~d hashed, ~d snapshots"
                                             count hashed
                                             (length passepartout::*memory-snapshots*)))))
                  ;; /resume <n> — resume from snapshot
                  ((and (>= (length text) 8) (string-equal (subseq text 0 8) "/resume "))
                   (let* ((n-str (string-trim '(#\Space) (subseq text 8)))
                          (n (handler-case (parse-integer n-str) (error () nil))))
                     (if n
                         (if (fboundp 'passepartout::rollback-memory)
                             (progn (funcall 'passepartout::rollback-memory (1- n))
                                    (add-msg :system (format nil "Resumed from snapshot ~d" n)))
                             (add-msg :system "Memory rollback not available"))
                         (add-msg :system "Usage: /resume <number>"))))
                  ;; /help <topic> — search user manual
                  ((and (>= (length text) 6) (string-equal (subseq text 0 6) "/help "))
                   (let ((topic (string-trim '(#\Space) (subseq text 6))))
                     (add-msg :system (format nil "Topic: ~a — use read-file to query USER_MANUAL.org" topic))))
                  ((string-equal text "/help")
                   (add-msg :system "/undo          Undo last operation")
                   (add-msg :system "/redo          Redo last operation")
                   (add-msg :system "/why           Show last gate trace")
                   (add-msg :system "/identity      Edit IDENTITY.org")
                   (add-msg :system "/tags          List tag severities")
                   (add-msg :system "/audit <id>    Inspect memory object")
                   (add-msg :system "/search <q>    Search messages")
                   (add-msg :system "/context       Show context summary")
                   (add-msg :system "/rewind <n>    Rewind to snapshot N")
                   (add-msg :system "/sessions      Show snapshots")
                   (add-msg :system "/resume <n>    Resume from snapshot")
                   (add-msg :system "/focus <proj>  Set project context")
                   (add-msg :system "/theme         Show theme")
                   (add-msg :system "/help [topic]  Show this help")
                   (add-msg :system "\\ + Enter      Multi-line input")
                   (add-msg :system "Ctrl+G         Toggle gate trace"))
                  ;; /theme command
                   ((string-equal text "/theme")
                    (add-msg :system (format nil "Theme: ~a — user=~a agent=~a system=~a input=~a"
                                            *tui-theme-current-name*
                                            (getf *tui-theme* :user)
                                            (getf *tui-theme* :agent)
                                            (getf *tui-theme* :system)
                                            (getf *tui-theme* :input)))
                    (add-msg :system "Presets: /theme dark | light | solarized | gruvbox"))
                  ((and (>= (length text) 7)
                        (string-equal (subseq text 0 7) "/theme "))
                   (let ((name (string-trim '(#\Space) (subseq text 7))))
                     (if (theme-switch name)
                         (add-msg :system (format nil "Theme switched to ~a" name))
                         (add-msg :system (format nil "Unknown theme '~a'. Try: dark light solarized gruvbox" name)))))
                  ;; /eval command
                  ((and (>= (length text) 6)
                        (string-equal (subseq text 0 6) "/eval "))
                   (handler-case
                       (let* ((*read-eval* t)
                              (*package* (find-package :passepartout.channel-tui))
                              (r (eval (read-from-string (subseq text 6)))))
                         (add-msg :system (format nil "=> ~s" r)))
                     (error (c) (add-msg :system (format nil "=> ✗ ~a" c)))))
                  ;; /focus <project> — set project context
                  ((and (>= (length text) 7)
                        (string-equal (subseq text 0 7) "/focus "))
                   (let ((project (string-trim '(#\Space) (subseq text 7))))
                     (if (and (fboundp 'focus-project) (> (length project) 0))
                         (progn (funcall 'focus-project project nil)
                                (add-msg :system (format nil "Focused on project: ~a" project)))
                         (add-msg :system "Usage: /focus <project-name>"))))
                  ;; /scope <scope> — change context scope
                  ((and (>= (length text) 7)
                        (string-equal (subseq text 0 7) "/scope "))
                   (let ((scope-str (string-trim '(#\Space) (subseq text 7))))
                     (cond
                       ((and (fboundp 'focus-session) (string-equal scope-str "session"))
                        (funcall 'focus-session)
                        (add-msg :system "Scope: session"))
                       ((and (fboundp 'focus-project) (string-equal scope-str "project"))
                        (funcall 'focus-project nil nil)
                        (add-msg :system "Scope: project"))
                       ((and (fboundp 'focus-memex) (string-equal scope-str "memex"))
                        (funcall 'focus-memex)
                        (add-msg :system "Scope: memex"))
                       (t (add-msg :system "Usage: /scope memex|session|project")))))
                  ;; /unfocus — pop context
                  ((and (>= (length text) 8)
                        (string-equal (subseq text 0 8) "/unfocus"))
                   (if (fboundp 'unfocus)
                       (progn (funcall 'unfocus)
                              (add-msg :system "Popped context"))
                       (add-msg :system "Context manager not loaded")))
                   ;; /quit — save history and exit
                   ((or (string-equal text "/quit") (string-equal text "/q"))
                    (let ((hist-file (merge-pathnames ".cache/passepartout/history"
                                                      (user-homedir-pathname))))
                      (uiop:ensure-all-directories-exist (list hist-file))
                      (with-open-file (out hist-file :direction :output
                                           :if-exists :supersede :if-does-not-exist :create)
                        (dolist (entry (reverse (st :input-history)))
                          (write-line entry out))))
                    (add-msg :system "* Goodbye *")
                    (send-daemon (list :type :event :payload '(:action :quit)))
                    (setf (st :running) nil))
                   ;; /reconnect — re-establish daemon connection
                   ((string-equal text "/reconnect")
                    (disconnect-daemon)
                    (connect-daemon))
                   ;; Normal message
                  (t
                   (add-msg :user text)
                   (setf (st :busy) t)
                   (send-daemon (list :type :event
                                     :payload (list :sensor :user-input :text text)))))
                 (setf (st :input-buffer) nil)
                 (setf (st :cursor-pos) 0)
                 (setf (st :dirty) (list t t t))))))
        ;; Tab — command completion (v0.7.0: extended with subcommand + file paths)
        ((or (eql ch 9) (eq ch :tab))
         (let ((text (input-string)))
           (cond
             ;; @ prefix — file path completion
             ((and (>= (length text) 1) (eql (char text 0) #\@))
              (let* ((partial (subseq text 1))
                     (memex (or (uiop:getenv "MEMEX_DIR")
                                (namestring (merge-pathnames "memex/" (user-homedir-pathname)))))
                     (proj (merge-pathnames (make-pathname :directory '(:relative "projects")) memex))
                     (files (handler-case (append (uiop:directory-files proj "**/*.org")
                                                  (uiop:directory-files proj "**/*.lisp"))
                              (error () nil)))
                     (names (mapcar (lambda (f) (subseq (namestring f) (1+ (length (namestring proj))))) files))
                     (match (find-if (lambda (n) (and (>= (length n) (length partial))
                                                       (string-equal n partial :end2 (length partial))))
                                     names)))
                (when match
                  (setf (st :input-buffer) (reverse (coerce (concatenate 'string "@" match) 'list)))
                  (setf (st :dirty) (list nil nil t)))))
             ;; /theme subcommand
             ((and (>= (length text) 7) (string-equal (subseq text 0 7) "/theme "))
              (let* ((partial (string-trim '(#\Space) (subseq text 7)))
                     (names '("dark" "light" "solarized" "gruvbox"))
                     (match (if (string= partial "") (first names)
                                (find partial names :test #'string-equal))))
                (when match
                  (setf (st :input-buffer) (reverse (coerce (concatenate 'string "/theme " match) 'list)))
                  (setf (st :dirty) (list nil nil t)))))
             ;; /focus subcommand
             ((and (>= (length text) 7) (string-equal (subseq text 0 7) "/focus "))
              (let* ((partial (string-trim '(#\Space) (subseq text 7)))
                     (memex (or (uiop:getenv "MEMEX_DIR")
                                (namestring (merge-pathnames "memex/" (user-homedir-pathname)))))
                     (proj (merge-pathnames (make-pathname :directory '(:relative "projects")) memex))
                     (dirs (handler-case (mapcar (lambda (d) (car (last (pathname-directory d))))
                                                  (uiop:subdirectories proj))
                             (error () nil)))
                     (match (if (string= partial "") (first dirs)
                                (find-if (lambda (d) (and (>= (length d) (length partial))
                                                           (string-equal d partial :end2 (length partial))))
                                           dirs))))
                (when match
                  (setf (st :input-buffer) (reverse (coerce (concatenate 'string "/focus " match) 'list)))
                  (setf (st :dirty) (list nil nil t)))))
             ;; Command prefix /
             ((and (> (length text) 1) (eql (char text 0) #\/))
              (let* ((cmds '("/eval" "/focus" "/scope" "/unfocus" "/help" "/theme" "/reconnect" "/quit"))
                     (match (find text cmds :test
                                  (lambda (in cmd) (and (>= (length cmd) (length in))
                                                         (string-equal cmd in :end1 (length in)))))))
                (when match
                  (setf (st :input-buffer) (reverse (coerce match 'list)))
                  (when (member match '("/eval" "/focus" "/scope") :test #'string=)
                    (push #\Space (st :input-buffer)))
                  (setf (st :dirty) (list nil nil t))))))))
       ;; Backspace
       ((or (eq ch :backspace) (eql ch 127) (eql ch 8)
            (eql ch #\Backspace))
        (input-delete-char)
        (setf (st :dirty) (list nil nil t)))
       ;; Left arrow
       ((or (eq ch :left) (eql ch 260))
        (when (> (or (st :cursor-pos) 0) 0)
          (decf (st :cursor-pos))
          (setf (st :dirty) (list nil nil t))))
       ;; Right arrow
       ((or (eq ch :right) (eql ch 261))
        (when (< (or (st :cursor-pos) 0) (length (st :input-buffer)))
          (incf (st :cursor-pos))
          (setf (st :dirty) (list nil nil t))))
      ;; Up arrow
       ((or (eq ch :up) (eql ch 259))
        (let* ((h (st :input-history)) (p (st :input-hpos)))
          (when (and h (< p (1- (length h))))
            (incf (st :input-hpos))
            (setf (st :input-buffer)
                  (reverse (coerce (nth (st :input-hpos) h) 'list)))
            (setf (st :dirty) (list nil nil t)))))
       ;; Down arrow
       ((or (eq ch :down) (eql ch 258))
        (when (> (st :input-hpos) 0)
          (decf (st :input-hpos))
          (let ((h (st :input-history)))
            (setf (st :input-buffer)
                  (if (and h (< (st :input-hpos) (length h)))
                      (reverse (coerce (nth (st :input-hpos) h) 'list))
                      nil))
            (setf (st :dirty) (list nil nil t)))))
       ;; PageUp
       ((or (eq ch :ppage) (eql ch 339))
        (let ((max-offset (max 0 (- (length (st :messages)) 1))))
          (setf (st :scroll-offset) (min max-offset (+ (st :scroll-offset) 5))))
        (setf (st :dirty) (list nil t nil)))
       ;; PageDown
       ((or (eq ch :npage) (eql ch 338))
        (setf (st :scroll-offset) (max 0 (- (st :scroll-offset) 5)))
        (setf (st :dirty) (list nil t nil)))
       ;; Printable
       (t
        (let ((chr (typecase ch
                     (character ch)
                     (integer (code-char ch))
                     (t nil))))
          (when (and chr (graphic-char-p chr))
            (input-insert-char chr)
            (setf (st :dirty) (list nil nil t))))))))

(defun on-daemon-msg (msg)
  (let* ((payload (getf msg :payload))
         (text (getf payload :text))
         (msg-type (getf msg :type))
         (action (getf payload :action))
         (level (getf msg :level))
         (sensor (getf payload :sensor))
         (gate-trace (getf msg :gate-trace))
         (rule-count (getf payload :rule-count))
         (foveal-id (getf payload :foveal-id)))
    ;; v0.7.2: HITL approval-required panel
    (when (eq level :approval-required)
      (let* ((hitl-msg (or (getf payload :message)
                           (getf payload :text)
                           "HITL approval required"))
             (hitl-action (getf (getf payload :action) :payload))
             (tool-name (getf hitl-action :tool))
             (explanation (or tool-name "unknown action")))
        (add-msg :system (format nil "┌─ Permission Required ─┐~%~a~%Action: ~a~%Respond: /approve HITL-xxxx or /deny HITL-xxxx"
                                hitl-msg explanation)
                 :panel t))
      (setf (st :dirty) (list nil t nil))
      (return-from on-daemon-msg nil))
    ;; v0.7.1: streaming chunk
    (when (eq msg-type :stream-chunk)
      (cond
        ((string= text "")
         ;; Final chunk: stamp time, clear streaming
         (when (> (length (st :messages)) 0)
           (let ((idx (1- (length (st :messages)))))
             (setf (getf (aref (st :messages) idx) :streaming) nil)
             (setf (getf (aref (st :messages) idx) :time) (now))))
         (setf (st :streaming-text) nil)
         (setf (st :busy) nil)
         (setf (st :dirty) (list nil t nil))
         (return-from on-daemon-msg nil))
        ((null (st :streaming-text))
         ;; First chunk: add new streaming message
         (setf (st :streaming-text) "")
         (setf (st :busy) nil)
         (add-msg :agent text)
         (let ((idx (1- (length (st :messages)))))
           (setf (getf (aref (st :messages) idx) :streaming) t))
         (setf (st :streaming-text) text)
         (setf (st :dirty) (list nil t nil))
         (return-from on-daemon-msg nil))
        (t
         ;; Subsequent chunk: append
         (let* ((new-text (concatenate 'string (st :streaming-text) text))
                (idx (1- (length (st :messages)))))
           (setf (st :streaming-text) new-text)
           (setf (getf (aref (st :messages) idx) :content) new-text)
           (setf (st :dirty) (list nil t nil)))
         (return-from on-daemon-msg nil))))
    (when rule-count (setf (st :rule-count) rule-count))
    (when foveal-id (setf (st :foveal-id) foveal-id))
    (cond
      (text (setf (st :busy) nil)
            (add-msg :agent text :gate-trace gate-trace))
      ((eq action :handshake)
       (add-msg :system (format nil "Connected v~a" (getf payload :version))))
      (t (add-msg :agent (format nil "~a" msg))))))

(defun send-daemon (msg)
  (let ((s (st :stream)))
    (when (and s (open-stream-p s))
      (handler-case
          (progn
            (format s "~a" (frame-message msg))
            (finish-output s))
        (error () nil)))))

(defun recv-daemon (s)
  (handler-case
      (let* ((hdr (make-string 6)) (n 0))
        (loop while (< n 6)
              do (let ((ch (read-char s nil)))
                    (unless ch (return-from recv-daemon nil))
                    (setf (char hdr n) ch) (incf n)))
        (let* ((len (parse-integer hdr :radix 16 :junk-allowed t))
               (buf (make-string (or len 0))))
          (when (and len (> len 0))
            (loop for i from 0 below len
                  do (let ((ch (read-char s nil)))
                        (unless ch (return-from recv-daemon nil))
                        (setf (char buf i) ch)))
            (let ((*read-eval* nil))
              (read-from-string buf)))))
    (error () nil)))

(defun reader-loop (s)
  (let ((consecutive-nils 0))
    (loop while (and (st :running) (open-stream-p s))
          do (let ((msg (recv-daemon s)))
               (if msg
                   (progn (queue-event (list :type :daemon :payload msg))
                          (setf consecutive-nils 0))
                   (progn (sleep 0.5)
                          (incf consecutive-nils)
                          (when (> consecutive-nils 10)
                            (queue-event (list :type :disconnected))
                            (return))))))))

(defun load-history ()
  "Load input history from disk on TUI startup."
  (let ((hist-file (merge-pathnames ".cache/passepartout/history"
                                    (user-homedir-pathname))))
    (when (uiop:file-exists-p hist-file)
      (with-open-file (in hist-file :direction :input)
        (loop for line = (read-line in nil nil)
              while line
              do (push line (st :input-history))))
      (setf (st :input-history) (nreverse (st :input-history))))))

(defun connect-daemon (&optional (host "127.0.0.1") (port 9105))
  (add-msg :system "* Connecting to daemon... *")
  (loop for attempt from 1 to 3
        for backoff = 0 then 3
        do (sleep backoff)
           (handler-case
               (let ((s (usocket:socket-connect host port :timeout 5)))
                 (setf (st :stream) (usocket:socket-stream s)
                       (st :connected) t)
                 (bt:make-thread (lambda () (reader-loop (st :stream)))
                                :name "tui-reader")
                 (add-msg :system (format nil "* Connected v~a *" "0.5.0"))
                 (return-from connect-daemon t))
             (usocket:connection-refused-error (c)
               (when (= attempt 3)
                 (add-msg :system (format nil "* No daemon on port ~a after ~a attempts *"
                                         port attempt))))
             (error (c)
               (add-msg :system (format nil "* Connection attempt ~a failed: ~a *"
                                        attempt c))
               (when (= attempt 3)
                 (add-msg :system "* TIP: run 'passepartout daemon' first *")))))
  nil)

(defun disconnect-daemon ()
  (when (st :stream)
    (ignore-errors (close (st :stream)))
    (setf (st :stream) nil (st :connected) nil)
    (add-msg :system "* Disconnected *")))

(defun tui-main ()
  (init-state)
  (load-history)
  (theme-load)
  (with-screen (scr :input-blocking nil :input-echoing nil :cursor-visible nil)
    (let* ((h (or (height scr) 24))
           (w (or (width scr) 80))
           (sw (make-instance 'window :height 3 :width (- w 2) :y 0 :x 1))
           (ch (- h 5))
           (cw (make-instance 'window :height ch :width (- w 2) :y 3 :x 1))
           (iw (make-instance 'window :height 1 :width (- w 2) :y (- h 1) :x 1))
            (swank-port (or (ignore-errors
                              (parse-integer (uiop:getenv "TUI_SWANK_PORT")))
                            4006)))
       (setf (function-keys-enabled-p iw) t
             (input-blocking iw) nil
             (st :dirty) (list t t t)
             ;; Store windows in state for SIGWINCH handler
             (st :scr) scr (st :sw) sw (st :cw) cw (st :iw) iw)
       (connect-daemon)
       (when (> swank-port 0)
         (handler-case
             (progn
               (ql:quickload :swank :silent t)
               (funcall (find-symbol "CREATE-SERVER" "SWANK")
                        :port swank-port :dont-close t)
               (add-msg :system
                        (format nil "* Swank ~d  M-x slime-connect *" swank-port)))
           (error ()
             (add-msg :system "* Swank unavailable *"))))
       ;; Initial render before the main loop — otherwise the screen stays
       ;; blank until the first keystroke (get-char blocks).
       (redraw sw cw ch iw)
       (refresh scr)
       (loop while (st :running) do
        (dolist (ev (drain-queue))
          (cond
            ((eq (getf ev :type) :daemon)
             (on-daemon-msg (getf ev :payload)))
            ((eq (getf ev :type) :disconnected)
             (setf (st :connected) nil
                   (st :busy) nil)
             (add-msg :system "* Connection lost — type /reconnect to retry *"))))
        (let ((ch (get-char iw)))
          (cond
            ((or (not ch) (equal ch -1)) nil)
            ;; KEY_RESIZE — terminal was resized (SIGWINCH from ncurses)
            ((eql ch 410)
             (let* ((new-h (or (height scr) 24))
                    (new-w (or (width scr) 80))
                    (new-ch (- new-h 5)))
               (setq sw (make-instance 'window :height 3 :width (- new-w 2) :y 0 :x 1)
                     ch new-ch
                     cw (make-instance 'window :height new-ch :width (- new-w 2) :y 3 :x 1)
                     iw (make-instance 'window :height 1 :width (- new-w 2) :y (- new-h 1) :x 1)
                     w new-w
                     h new-h)
               (setf (function-keys-enabled-p iw) t
                     (input-blocking iw) nil
                     (st :dirty) (list t t t)
                     (st :sw) sw (st :cw) cw (st :iw) iw)
               (redraw sw cw ch iw)
               (refresh scr)))
            (t (on-key ch))))
        (redraw sw cw ch iw)
        (refresh scr)
        (sleep 0.03))
       (disconnect-daemon))))

(eval-when (:compile-toplevel :load-toplevel :execute)
  (ql:quickload :fiveam :silent t))

(defpackage :passepartout-tui-tests
  (:use :cl :passepartout :passepartout.channel-tui)
  (:export #:tui-suite))

(in-package :passepartout-tui-tests)

(fiveam:def-suite tui-suite :description "Verification of the TUI model and event handling")
(fiveam:in-suite tui-suite)

(fiveam:test test-init-state
  "Contract model.1: init-state returns fresh state plist with required keys."
  (init-state)
  (fiveam:is (eq t (st :running)))
  (fiveam:is (eq :chat (st :mode)))
  (fiveam:is (eq nil (st :connected)))
  (fiveam:is (eq nil (st :stream)))
  (fiveam:is (zerop (length (st :messages))))
  (fiveam:is (eq 0 (st :scroll-offset)))
  (fiveam:is (eq nil (st :busy))))

(fiveam:test test-add-msg
  "Contract model.2: add-msg appends a message with role, content, and time."
  (init-state)
  (add-msg :user "hello")
  (let* ((msgs (st :messages))
         (msg (aref msgs 0)))
    (fiveam:is (eq :user (getf msg :role)))
    (fiveam:is (string= "hello" (getf msg :content)))
    (fiveam:is (stringp (getf msg :time)))
    (fiveam:is (= 5 (length (getf msg :time))))))

(fiveam:test test-add-msg-dirty-flag
  "Contract model.2: add-msg sets dirty flags for status and chat."
  (init-state)
  (setf (st :dirty) (list nil nil nil))
  (add-msg :system "boot")
  (let ((dirty (st :dirty)))
    (fiveam:is (eq t (first dirty)))
    (fiveam:is (eq t (second dirty)))
    (fiveam:is (eq nil (third dirty)))))

(fiveam:test test-queue-event-roundtrip
  "Contract model.3: queue-event + drain-queue preserves events in order."
  (init-state)
  (queue-event '(:type :key :payload (:ch 13)))
  (queue-event '(:type :daemon :payload (:text "hi")))
  (let ((evs (drain-queue)))
    (fiveam:is (= 2 (length evs)))
    (fiveam:is (equal '(:type :key :payload (:ch 13)) (first evs)))
    (fiveam:is (equal '(:type :daemon :payload (:text "hi")) (second evs)))
    (fiveam:is (null (drain-queue)))))

(fiveam:test test-on-key-enter-sends-user-message
  "Contract 1: on-key with Enter extracts input, adds user message, clears buffer."
  (init-state)
  ;; Simulate typing "test"
  (dolist (ch '(#\t #\e #\s #\t))
    (on-key (char-code ch)))
  (fiveam:is (string= "test" (input-string)))
  ;; Simulate Enter key — ncurses returns 343 (KEY_ENTER) when keypad is enabled
  (on-key 343)
  ;; Input buffer should be cleared
  (fiveam:is (string= "" (input-string)))
  ;; A user message should be in the message list
  (let ((msgs (st :messages)))
    (fiveam:is (>= (length msgs) 1))
    (let ((last (aref msgs 0)))
      (fiveam:is (eq :user (getf last :role)))
      (fiveam:is (string= "test" (getf last :content))))))

(fiveam:test test-on-key-eval-command
  "Contract 1: on-key handles /eval command and displays result."
  (init-state)
  ;; Type "/eval (+ 1 2)"
  (dolist (ch (coerce "/eval (+ 1 2)" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((msgs (st :messages)))
    (fiveam:is (>= (length msgs) 1))
    (let ((last-msg (aref msgs 0)))
      (fiveam:is (eq :system (getf last-msg :role)))
      (fiveam:is (search "=> 3" (getf last-msg :content))))))

(fiveam:test test-on-key-backspace
  "Contract 1: on-key with Backspace removes last character from buffer."
  (init-state)
  (dolist (ch '(#\a #\b #\c))
    (on-key (char-code ch)))
  (fiveam:is (string= "abc" (input-string)))
  ;; ncurses returns 263 (KEY_BACKSPACE) when keypad is enabled
  (on-key 263)
  (fiveam:is (string= "ab" (input-string))))

(fiveam:test test-on-key-focus-command
  "Contract 1: /focus command parses project name."
  (init-state)
  (dolist (ch (coerce "/focus myapp" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((msg (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf msg :role)))))

(fiveam:test test-on-key-scope-command
  "Contract 1: /scope command with valid argument."
  (init-state)
  (dolist (ch (coerce "/scope memex" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((msg (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf msg :role)))))

(fiveam:test test-on-key-unfocus-command
  "Contract 1: /unfocus command dispatches correctly."
  (init-state)
  (dolist (ch (coerce "/unfocus" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((msg (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf msg :role)))))

(fiveam:test test-on-key-tab-completion
  "Contract 1: Tab completes / commands when input starts with /."
  (init-state)
  (dolist (ch (coerce "/ev" 'list))
    (on-key (char-code ch)))
  (on-key 9)
  (fiveam:is (string= "/eval " (input-string))))

(fiveam:test test-on-key-tab-no-slash
  "Contract 1: Tab does nothing when input doesn't start with /."
  (init-state)
  (dolist (ch (coerce "hello" 'list))
    (on-key (char-code ch)))
  (on-key 9)
  (fiveam:is (string= "hello" (input-string))))

(fiveam:test test-on-key-multiline
  "Contract 1: \\ + Enter inserts newline instead of sending."
  (init-state)
  (dolist (ch (coerce "line1" 'list))
    (on-key (char-code ch)))
  (on-key (char-code #\\))
  (on-key 343)
  (fiveam:is (search "line1" (input-string)))
  (fiveam:is (search (string #\Newline) (input-string))))

(fiveam:test test-on-key-help
  "Contract 1: /help displays command list."
  (init-state)
  (dolist (ch (coerce "/help" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((msgs (st :messages)))
    (fiveam:is (>= (length msgs) 3))
    (fiveam:is (some (lambda (m) (search "/eval" (getf m :content))) msgs))))

(fiveam:test test-activity-indicator
  "Contract model: :busy flag is set on send and cleared on agent response."
  (init-state)
  (fiveam:is (eq nil (st :busy)))
  ;; Simulate sending a normal message (sets busy)
  (dolist (ch (coerce "hello" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (fiveam:is (eq t (st :busy)))
  ;; Simulate receiving an agent response (clears busy)
  (on-daemon-msg '(:type :event :payload (:text "hi back")))
  (fiveam:is (eq nil (st :busy))))

(fiveam:test test-theme
  "Contract view: *tui-theme* provides color mappings."
  (fiveam:is (eq :green (getf *tui-theme* :user)))
  (fiveam:is (eq :white (getf *tui-theme* :agent)))
  (fiveam:is (eq :yellow (getf *tui-theme* :system)))
  (fiveam:is (eq :cyan (getf *tui-theme* :input)))
  (fiveam:is (eq :white (theme-color :unknown-role))))

(fiveam:test test-on-key-ctrl-u-clears
  "Contract 1/v0.7.0: Ctrl+U clears the input buffer."
  (init-state)
  (dolist (ch '(#\h #\i)) (on-key (char-code ch)))
  (on-key 21) ; Ctrl+U
  (fiveam:is (string= "" (input-string))))

(fiveam:test test-on-key-ctrl-l-redraws
  "Contract 1/v0.7.0: Ctrl+L sets all dirty flags."
  (init-state)
  (setf (st :dirty) (list nil nil nil))
  (on-key 12) ; Ctrl+L
  (let ((d (st :dirty)))
    (fiveam:is (eq t (first d)))
    (fiveam:is (eq t (second d)))))

(fiveam:test test-scroll-notify
  "Contract/v0.7.0: add-msg sets scroll-notify when scrolled up."
  (init-state)
  (setf (st :scroll-at-bottom) nil)
  (add-msg :agent "hi")
  (fiveam:is (eq t (st :scroll-notify)))
  (setf (st :scroll-at-bottom) t (st :scroll-notify) nil)
  (add-msg :agent "hi2")
  (fiveam:is (eq nil (st :scroll-notify))))

(fiveam:test test-tab-subcommand
  "Contract/v0.7.0: Tab completes subcommand for /theme."
  (init-state)
  (dolist (ch (coerce "/theme " 'list)) (on-key (char-code ch)))
  (on-key 9)
  (fiveam:is (search "dark" (input-string) :test #'char-equal)))

;; ── v0.7.1 Streaming ──

(fiveam:test test-stream-chunk-appends
  "Contract/v0.7.1: stream-chunk frame appends to last message."
  (init-state)
  (on-daemon-msg '(:type :stream-chunk :payload (:text "Hello")))
  (on-daemon-msg '(:type :stream-chunk :payload (:text " world")))
  (let ((msgs (st :messages)))
    (fiveam:is (= 1 (length msgs)))
    (let ((msg (aref msgs 0)))
      (fiveam:is (eq :agent (getf msg :role)))
      (fiveam:is (string= "Hello world" (getf msg :content)))
      (fiveam:is (eq t (getf msg :streaming))))))

(fiveam:test test-stream-chunk-final
  "Contract/v0.7.1: final empty chunk stamps timestamp and clears streaming flag."
  (init-state)
  (on-daemon-msg '(:type :stream-chunk :payload (:text "Hi")))
  (on-daemon-msg '(:type :stream-chunk :payload (:text "")))
  (let ((msg (aref (st :messages) 0)))
    (fiveam:is (stringp (getf msg :time)))
    (fiveam:is (string= "Hi" (getf msg :content)))
    (fiveam:is (null (st :streaming-text)))))

(fiveam:test test-stream-interrupt
  "Contract/v0.7.1: Esc during streaming appends [interrupted] and finalizes."
  (init-state)
  (on-daemon-msg '(:type :stream-chunk :payload (:text "partial")))
  (on-key 27)
  (let ((msg (aref (st :messages) 0)))
    (fiveam:is (stringp (getf msg :time)))
    (fiveam:is (search "[interrupted]" (getf msg :content)))
    (fiveam:is (null (st :streaming-text)))
    (fiveam:is (null (st :busy)))))

(fiveam:test test-stream-check-skip
  "Contract/v0.7.1: Esc without active streaming does nothing."
  (init-state)
  (on-key 27)
  (fiveam:is (null (st :streaming-text)))
  (fiveam:is (= 0 (length (st :messages)))))

(fiveam:test test-tab-open-url
  "Contract/v0.7.1: Tab on empty input with URL message extracts URL."
  (init-state)
  (add-msg :agent "visit https://example.com for info")
  (on-key 9)
  (fiveam:is (string= "https://example.com" (st :url-buffer))))

;; ── v0.7.2 HITL Panels ──

(fiveam:test test-hitl-panel-in-on-daemon-msg
  "Contract v0.7.2: approval-required messages render as HITL panels."
  (init-state)
  (on-daemon-msg '(:type :EVENT :level :approval-required
                    :payload (:sensor :approval-required
                              :action (:TYPE :REQUEST :PAYLOAD (:TOOL "shell"))
                              :message "rm -rf blocked")))
  (let ((m (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf m :role)))
    (fiveam:is (getf m :panel))
    (fiveam:is (search "rm -rf" (getf m :content)))))

(fiveam:test test-hitl-panel-after-approve
  "Contract v0.7.2: /approve adds confirmation after panel."
  (init-state)
  (on-daemon-msg '(:type :EVENT :level :approval-required
                    :payload (:sensor :approval-required :message "test")))
  (dolist (ch (coerce "/approve HITL-test" 'list))
    (on-key (char-code ch)))
  (on-key 13)
  (let ((m (aref (st :messages) 0)))
    (fiveam:is (getf m :panel)))
  (let ((m (aref (st :messages) (1- (length (st :messages))))))
    (fiveam:is (search "Approved" (getf m :content)))))

(fiveam:test test-hitl-approve-parsed
  "Contract v0.7.2: /approve HITL-xxxx sends structured event, not raw text."
  (init-state)
  (dolist (ch (coerce "/approve HITL-abcd" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  ;; Should add a system message confirming approval, not a user message
  (let ((msgs (st :messages)))
    (fiveam:is (>= (length msgs) 1))
    (let ((m (aref msgs 0)))
      (fiveam:is (eq :system (getf m :role)))
      (fiveam:is (search "Approved" (getf m :content))))))

(fiveam:test test-hitl-deny-parsed
  "Contract v0.7.2: /deny HITL-xxxx sends structured denial."
  (init-state)
  (dolist (ch (coerce "/deny HITL-xyz" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((m (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf m :role)))
    (fiveam:is (search "Denied" (getf m :content)))))

;; ── v0.7.2 Undo/Redo ──

(fiveam:test test-undo-command
  "Contract v0.7.2: /undo sends undo event."
  (init-state)
  (dolist (ch (coerce "/undo" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((m (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf m :role)))
    (fiveam:is (search "Undo" (getf m :content)))))

(fiveam:test test-redo-command
  "Contract v0.7.2: /redo sends redo event."
  (init-state)
  (dolist (ch (coerce "/redo" 'list))
    (on-key (char-code ch)))
  (on-key 343)
  (let ((m (aref (st :messages) 0)))
    (fiveam:is (eq :system (getf m :role)))
    (fiveam:is (search "Redo" (getf m :content)))))

;; ── v0.7.2 Self-help ──

(fiveam:test test-why-command
  "Contract v0.7.2: /why shows gate trace from last message."
  (init-state)
  (add-msg :agent "did something" :gate-trace '((:gate "shell" :result :blocked :reason "rm -rf")))
  (dolist (ch (coerce "/why" 'list))
    (on-key (char-code ch)))
  (on-key 13)
  (let* ((msgs (st :messages))
         (m (aref msgs (1- (length msgs)))))
    (fiveam:is (eq :system (getf m :role)))
    (fiveam:is (search "[BLOCKED]" (getf m :content)))
    (fiveam:is (search "shell" (getf m :content)))))

(fiveam:test test-why-no-trace
  "Contract v0.7.2: /why with no gate trace shows fallback message."
  (init-state)
  (dolist (ch (coerce "/why" 'list))
    (on-key (char-code ch)))
  (on-key 13)
  (let* ((msgs (st :messages))
         (m (aref msgs (1- (length msgs)))))
    (fiveam:is (search "No recent" (getf m :content)))))

;; ── v0.7.2 Gate Trace Toggle (Ctrl+G) ──

(fiveam:test test-ctrlg-toggle-gate-trace
  "Contract v0.7.2: Ctrl+G toggles gate-trace collapse state."
  (init-state)
  (add-msg :agent "test" :gate-trace '((:gate "shell" :result :passed)))
  (on-key 7)  ;; Ctrl+G — first press hides
  (let* ((msgs (st :messages))
         (m (aref msgs (1- (length msgs)))))
    (fiveam:is (search "hidden" (getf m :content))))
  (on-key 7)  ;; second press shows
  (let* ((msgs (st :messages))
         (m (aref msgs (1- (length msgs)))))
    (fiveam:is (search "shown" (getf m :content)))))

(fiveam:test test-ctrlg-no-gate-trace
  "Contract v0.7.2: Ctrl+G with no gate trace shows fallback."
  (init-state)
  (on-key 7)
  (let ((m (aref (st :messages) 0)))
    (fiveam:is (search "No gate trace" (getf m :content)))))