#+TITLE: Passepartout TUI — Model
#+PROPERTY: header-args:lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-state.lisp

* Model

The TUI state is a single plist accessed via ~st~ / ~(setf st)~.
All state mutation flows through event handlers in the controller.

** Contract

1. (init-state): returns a fresh state plist with ~:msgs~ list,
   ~:input~ buffer, ~:dirty~ flag, ~:busy~ flag, and ~:connection~ status.
2. (add-msg role content &key gate-trace): appends a message object
   to the ~:messages~ vector (v0.3.3), tagged with timestamp, role,
   and optional gate-trace from the daemon (v0.4.0).
3. (queue-event ev): thread-safely enqueues an event for the
   reader loop. (drain-queue) returns and clears the queue.

** Package + State
#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-state.lisp
(defpackage :passepartout.channel-tui
  (:use :cl :passepartout :usocket :bordeaux-threads)
  (:export :tui-main :st :add-msg :now :input-string
           :queue-event :drain-queue :init-state
            :view-status :view-chat :view-input :redraw
            :position-cursor
            :input-panel-top
           :on-key :on-daemon-msg :send-daemon
           :connect-daemon :disconnect-daemon
           :*tui-theme* :theme-color))
(in-package :passepartout.channel-tui)

(defvar *state* nil)
(defvar *event-queue* nil)
(defvar *event-lock* (bt:make-lock "tui-event-lock"))

(defvar *tui-theme*
  '(    :user-fg "#fab283"      :user-bg "#1e1e1e"      :user-border "#fab283"
    :agent-border "#c0a080" :agent-header "#d4956a" :agent-fg "#e8e8e8"
    :system "#808080"
    :input-prompt "#fab283" :input-fg "#e8e8e8"
    :hint "#606060"
    :status-bg "#141414"    :status-fg "#e8e8e8"
    :bg "#0a0a0a"           :bg-panel "#141414"      :bg-element "#1e1e1e"
    :text-muted "#808080"
    :dot-connected "#7fd88f" :dot-disconnected "#e06c75"
    :bg-input "#2e2e2e"
    :error "#e06c75"
    :tool-running "#fab283" :tool-done "#7fd88f"    :tool-error "#e06c75"
    :thinking-bg "#3a3a3a"  :symbolic-border "#707070"
    :separator "#3c3c3c"    :accent "#fab283"        :dim "#606060")
  "Dark-neutral color theme with warm amber accent. Backgrounds are dark grays,
semantic text colors for context. Keys: :bg (deepest), :bg-panel, :bg-element,
:text-muted, :user-fg/bg/border, :agent-border/header/fg, :system,
:input-prompt/fg, :hint, :status-bg/fg, :bg-input, :thinking-bg,
:symbolic-border, :dot-connected/disconnected, :error, :tool-*,
:separator, :accent, :dim.")

(defvar *tui-theme-presets*
  '(:amber
    (:user-fg "#fab283" :user-bg "#1e1e1e" :user-border "#fab283"
     :agent-header "#d4956a" :agent-fg "#e8e8e8"
     :agent-border "#c0a080" :thinking-bg "#3a3a3a" :symbolic-border "#707070"
     :system "#808080"
     :input-prompt "#fab283" :input-fg "#e8e8e8"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#e8e8e8"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#7fd88f" :dot-disconnected "#e06c75"
     :error "#e06c75"
     :tool-running "#fab283" :tool-done "#7fd88f" :tool-error "#e06c75"
     :separator "#3c3c3c" :accent "#fab283" :dim "#606060")
    :gold
    (:user-fg "#ffd700" :user-bg "#1e1e1e" :user-border "#ffd700"
     :agent-header "#d4a574" :agent-fg "#e8e8e8"
     :agent-border "#c0a080" :thinking-bg "#3a3a3a" :symbolic-border "#707070"
     :system "#808080"
     :input-prompt "#ffd700" :input-fg "#e8e8e8"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#ffd700"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#7fd88f" :dot-disconnected "#e06c75"
     :error "#e06c75"
     :tool-running "#ffd700" :tool-done "#7fd88f" :tool-error "#e06c75"
     :separator "#3c3c3c" :accent "#ffd700" :dim "#606060")
    :terracotta
    (:user-fg "#e87a5d" :user-bg "#1e1e1e" :user-border "#e87a5d"
     :agent-header "#d4956a" :agent-fg "#e0c8b0"
     :agent-border "#c0a080" :thinking-bg "#3a3a3a" :symbolic-border "#707070"
     :system "#808080"
     :input-prompt "#e87a5d" :input-fg "#e0c8b0"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#d4956a"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#6cb85c" :dot-disconnected "#d94a3a"
     :error "#d94a3a"
     :tool-running "#e87a5d" :tool-done "#6cb85c" :tool-error "#d94a3a"
     :separator "#3c3c3c" :accent "#e87a5d" :dim "#606060")
    :sepia
    (:user-fg "#c4a882" :user-bg "#1e1e1e" :user-border "#c4a882"
     :agent-header "#b89870" :agent-fg "#d4c4a8"
     :system "#808080"
     :input-prompt "#c4a882" :input-fg "#d4c4a8"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#b89870"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#7aac5c" :dot-disconnected "#c84a3a"
     :error "#c84a3a"
     :tool-running "#c4a882" :tool-done "#7aac5c" :tool-error "#c84a3a"
     :separator "#3c3c3c" :accent "#c4a882" :dim "#606060")
    :nord-warm
    (:user-fg "#d4a574" :user-bg "#1e1e1e" :user-border "#d4a574"
     :agent-header "#c49870" :agent-fg "#e0d0c0"
     :system "#808080"
     :input-prompt "#d08770" :input-fg "#e0d0c0"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#c8a080"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#7cb860" :dot-disconnected "#d06050"
     :error "#d06050"
     :tool-running "#d08770" :tool-done "#7cb860" :tool-error "#d06050"
     :separator "#3c3c3c" :accent "#d4a574" :dim "#606060")
    :monokai-warm
    (:user-fg "#e6b87d" :user-bg "#1e1e1e" :user-border "#e6b87d"
     :agent-header "#d4a06a" :agent-fg "#d8c8b0"
     :system "#808080"
     :input-prompt "#e6b87d" :input-fg "#d8c8b0"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#cc9966"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#7ab85c" :dot-disconnected "#d94a3a"
     :error "#d94a3a"
     :tool-running "#e6b87d" :tool-done "#7ab85c" :tool-error "#d94a3a"
     :separator "#3c3c3c" :accent "#e6b87d" :dim "#606060")
    :gruvbox-warm
    (:user-fg "#d8a657" :user-bg "#1e1e1e" :user-border "#d8a657"
     :agent-header "#c8a070" :agent-fg "#e0c8a8"
     :system "#808080"
     :input-prompt "#d8a657" :input-fg "#e0c8a8"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#c8a070"
     :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1e1e1e"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#7ab85c" :dot-disconnected "#d94a3a"
     :error "#d94a3a"
     :tool-running "#d8a657" :tool-done "#7ab85c" :tool-error "#d94a3a"
     :separator "#3c3c3c" :accent "#d8a657" :dim "#606060")
    :light-amber
    (:user-fg "#cc6600" :user-bg "#f5f5f5" :user-border "#cc6600"
     :agent-header "#8b6914"       :agent-fg "#3a2a1a"
     :agent-border "#a08060" :thinking-bg "#d4d4d4" :symbolic-border "#b0b0b0"
     :system "#808080"
     :input-prompt "#cc6600" :input-fg "#3a2a1a"
     :hint "#a0a0a0"
     :status-bg "#ebebeb" :status-fg "#3a2a1a"
      :bg "#ffffff" :bg-panel "#f5f5f5" :bg-element "#ebebeb"
     :bg-input "#d4d4d4"
     :text-muted "#808080"
     :dot-connected "#2e8b57" :dot-disconnected "#cc3300"
     :error "#cc3300"
     :tool-running "#cc6600" :tool-done "#2e8b57" :tool-error "#cc3300"
     :separator "#d4d4d4" :accent "#cc6600" :dim "#a0a0a0")
    :catppuccin
    (:user-fg "#fab387" :user-bg "#1e1e2e" :user-border "#fab387"
      :agent-header "#cba6f7" :agent-fg "#cdd6f4"
     :agent-border "#a6adc8" :thinking-bg "#363650" :symbolic-border "#6c7086"
     :system "#808080"
     :input-prompt "#fab387" :input-fg "#cdd6f4"
     :hint "#6c7086"
     :status-bg "#181825" :status-fg "#a6adc8"
      :bg "#11111b" :bg-panel "#181825" :bg-element "#1e1e2e"
     :bg-input "#2e2e2e"
     :text-muted "#6c7086"
     :dot-connected "#a6e3a1" :dot-disconnected "#f38ba8"
     :error "#f38ba8"
     :tool-running "#fab387" :tool-done "#a6e3a1" :tool-error "#f38ba8"
     :separator "#313244" :accent "#fab387" :dim "#585b70")
    :tokyonight
    (:user-fg "#ff9e64" :user-bg "#1a1b26" :user-border "#ff9e64"
      :agent-header "#7aa2f7" :agent-fg "#a9b1d6"
     :agent-border "#7982a8" :thinking-bg "#363b54" :symbolic-border "#565f89"
     :system "#808080"
     :input-prompt "#ff9e64" :input-fg "#a9b1d6"
     :hint "#565f89"
     :status-bg "#16161e" :status-fg "#9aa5ce"
      :bg "#0f0f18" :bg-panel "#16161e" :bg-element "#1a1b26"
     :bg-input "#2e2e2e"
     :text-muted "#565f89"
     :dot-connected "#9ece6a" :dot-disconnected "#db4b4b"
     :error "#db4b4b"
     :tool-running "#ff9e64" :tool-done "#9ece6a" :tool-error "#db4b4b"
     :separator "#292e42" :accent "#ff9e64" :dim "#444b6a")
    :dracula
    (:user-fg "#ff9580" :user-bg "#1e1f2b" :user-border "#ff9580"
      :agent-header "#bd93f9" :agent-fg "#f8f8f2"
     :agent-border "#c0c0e0" :thinking-bg "#3a3b50" :symbolic-border "#6272a4"
     :system "#808080"
     :input-prompt "#ff9580" :input-fg "#f8f8f2"
     :hint "#6272a4"
     :status-bg "#191a24" :status-fg "#e0e0e0"
      :bg "#0f101a" :bg-panel "#191a24" :bg-element "#1e1f2b"
     :bg-input "#2e2e2e"
     :text-muted "#6272a4"
     :dot-connected "#50fa7b" :dot-disconnected "#ff5555"
     :error "#ff5555"
     :tool-running "#ff9580" :tool-done "#50fa7b" :tool-error "#ff5555"
     :separator "#34354a" :accent "#ff9580" :dim "#5a5b7a")
    :gemini
    (:user-fg "#87afff" :user-bg "#1a1a1a" :user-border "#87afff"
      :agent-header "#d7afff" :agent-fg "#ffffff"
     :agent-border "#d0d0d0" :thinking-bg "#3a3a3a" :symbolic-border "#707070"
     :system "#808080"
     :input-prompt "#87afff" :input-fg "#ffffff"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#afafaf"
      :bg "#000000" :bg-panel "#141414" :bg-element "#1a1a1a"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#d7ffd7" :dot-disconnected "#ff87af"
     :error "#ff87af"
     :tool-running "#87afff" :tool-done "#d7ffd7" :tool-error "#ff87af"
     :separator "#3a3a3a" :accent "#87afff" :dim "#5f5f5f")
    :mono
    (:user-fg "#e0e0e0" :user-bg "#1a1a1a" :user-border "#808080"
      :agent-header "#c0c0c0" :agent-fg "#d0d0d0"
     :agent-border "#a0a0a0" :thinking-bg "#3a3a3a" :symbolic-border "#808080"
     :system "#808080"
     :input-prompt "#ffffff" :input-fg "#d0d0d0"
     :hint "#606060"
     :status-bg "#141414" :status-fg "#b0b0b0"
      :bg "#0a0a0a" :bg-panel "#141414" :bg-element "#1a1a1a"
     :bg-input "#2e2e2e"
     :text-muted "#808080"
     :dot-connected "#a0a0a0" :dot-disconnected "#808080"
     :error "#808080"
     :tool-running "#e0e0e0" :tool-done "#a0a0a0" :tool-error "#808080"
     :separator "#303030" :accent "#ffffff" :dim "#505050"))
  "13 theme presets (amber, gold, terracotta, sepia, nord-warm,
monokai-warm, gruvbox-warm, light-amber, catppuccin, tokyonight, dracula,
gemini, mono). Keys: :bg/:bg-panel/:bg-element/:bg-input/:text-muted.")

(defvar *tui-theme-current-name* :amber
  "Name of the currently active theme preset.")

(defun theme-save ()
  "Persist current theme to disk."
  (let ((path (merge-pathnames ".cache/passepartout/theme.lisp"
                               (user-homedir-pathname))))
    (uiop:ensure-all-directories-exist (list path))
    (with-open-file (out path :direction :output :if-exists :supersede :if-does-not-exist :create)
      (format out ";; Passepartout TUI theme — auto-generated~%")
      (format out "(setf passepartout.channel-tui::*tui-theme* '~s)~%" *tui-theme*)
      (format out "(setf passepartout.channel-tui::*tui-theme-current-name* ~s)~%" *tui-theme-current-name*))
    t))

(defun theme-load ()
  "Load persisted theme from disk. Called at startup.
Adds any missing keys with defaults to handle saved themes from older versions."
  (let ((path (merge-pathnames ".cache/passepartout/theme.lisp"
                               (user-homedir-pathname))))
    (when (uiop:file-exists-p path)
      (ignore-errors (load path)))
    ;; Fill in any missing keys from the default preset
    (let ((defaults (getf *tui-theme-presets* *tui-theme-current-name*)))
      (when defaults
        (dolist (key '(:bg-input :bg-element :text-muted :agent-border :thinking-bg :symbolic-border))
          (unless (getf *tui-theme* key)
            (let ((val (getf defaults key)))
              (when val (setf (getf *tui-theme* key) val)))))))))

(defun theme-switch (name)
  "Switch to a named theme preset. Returns the preset name or nil if not found."
  (let* ((key (intern (string-upcase (string name)) :keyword))
         (preset (getf *tui-theme-presets* key)))
    (when preset
      (setf *tui-theme* (copy-list preset)
            *tui-theme-current-name* key)
      (theme-save)
      (setf (st :dirty) (list t t t))
      key)))

(defun theme-color (role)
  "Returns a hex color string for a semantic role, suitable for cl-tty."
  (let ((val (or (getf *tui-theme* role) :white)))
    (cond
      ((stringp val) val)
      (t (case val
           (:green "#00FF00") (:red "#FF0000") (:cyan "#00FFFF")
           (:yellow "#FFFF00") (:magenta "#FF00FF") (:blue "#0000FF")
           (:white "#FFFFFF") (:black "#000000")
           (:bright-black "#666666") (:bright-yellow "#FFD700")
           (t "#FFFFFF"))))))

(defun st (key) (getf *state* key))
(defun (setf st) (val key) (setf (getf *state* key) val))

(defun init-state ()
  (setf *state*
        (list :running t :mode :chat :connected nil :stream nil
              :input-buffer nil :input-history nil :input-hpos 0
              :messages (make-array 16 :adjustable t :fill-pointer 0)
               :scroll-offset 0 :busy nil :cursor-pos 0
               :cursor-line 0 :cursor-col 0
              :pending-ctrl-x nil
              :scroll-at-bottom t :scroll-notify nil
              :streaming-text nil :url-buffer nil            ; v0.7.1
              :collapsed-gates nil                          ; v0.7.2
              :search-mode nil :search-query ""           ; v0.7.2
              :search-matches nil :search-match-idx 0
               :sidebar-mode :auto                       ; v0.8.0: :auto/:visible/:hidden
               :sidebar-width 42                           ; v0.8.0
               :expand-tool-calls nil                      ; v0.8.0
               :mcp-count 0                                ; v0.8.0
               :kill-ring nil                               ; v0.9.0
               :dialog-stack nil                           ; v0.8.0
               :minibuffer-active nil                      ; v0.8.0
                :command-palette-active nil                 ; v0.8.0
                :command-palette-dialog nil                 ; v0.8.0
                :session-cost 0.0                          ; v0.9.0
                :daemon-version nil                        ; filled by handshake
                :dirty (list nil nil nil))))
#+END_SRC

** Helpers
#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-state.lisp
(defun now ()
  (multiple-value-bind (s m h) (get-decoded-time)
    (declare (ignore s))
    (format nil "~2,'0d:~2,'0d" h m)))

(defun input-string ()
  (coerce (reverse (st :input-buffer)) 'string))

(defun input-insert-char (ch)
  "Insert character at cursor position into the input buffer."
  (let* ((buf (st :input-buffer))
         (pos (or (st :cursor-pos) 0))
         (s (coerce (reverse buf) 'string))
         (new (concatenate 'string (subseq s 0 pos) (string ch) (subseq s pos))))
    (setf (st :input-buffer) (reverse (coerce new 'list)))
    (setf (st :cursor-pos) (1+ pos))))

(defun input-delete-char ()
  "Delete character before cursor position (standard backspace)."
  (let* ((buf (st :input-buffer))
         (pos (or (st :cursor-pos) 0)))
    (when (and buf (> pos 0))
      (let* ((s (coerce (reverse buf) 'string))
             (new (concatenate 'string (subseq s 0 (1- pos)) (subseq s pos))))
        (setf (st :input-buffer) (reverse (coerce new 'list)))
        (setf (st :cursor-pos) (1- pos))))))

(defun add-msg (role content &key gate-trace panel)
  (vector-push-extend (list :role role :content content :time (now) :gate-trace gate-trace :panel panel) (st :messages))
  ;; v0.7.0: notify when scrolled up and new msg arrives
  (unless (st :scroll-at-bottom)
    (setf (st :scroll-notify) t))
  (setf (st :dirty) (list t t nil)))
#+END_SRC

** Slash Commands
#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-state.lisp
(defvar *slash-commands*
  '((:title "/eval <expr> — Evaluate Lisp"        :value "/eval"   :category :session)
    (:title "/undo — Undo last operation"           :value "/undo"   :category :session)
    (:title "/redo — Redo last operation"           :value "/redo"   :category :session)
    (:title "/reconnect — Re-establish daemon"     :value "/reconnect" :category :session)
    (:title "/quit — Save history and exit"        :value "/quit"   :category :session)
    (:title "/q — Quick quit"                       :value "/q"      :category :session)
    (:title "/why — Show last gate trace"           :value "/why"    :category :memory)
    (:title "/identity — Edit IDENTITY.org"         :value "/identity" :category :memory)
    (:title "/tags — List tag severities"           :value "/tags"   :category :memory)
    (:title "/audit <id> — Inspect memory"          :value "/audit"  :category :memory)
    (:title "/audit verify — Memory integrity"      :value "/audit verify" :category :memory)
    (:title "/rewind <n> — Rewind to snapshot"     :value "/rewind" :category :memory)
    (:title "/sessions — Show memory snapshots"    :value "/sessions" :category :memory)
    (:title "/resume <n> — Resume from snapshot"   :value "/resume" :category :memory)
    (:title "/focus <project> — Set context"        :value "/focus"  :category :system)
    (:title "/scope <scope> — Change scope"         :value "/scope"  :category :system)
    (:title "/unfocus — Pop context"               :value "/unfocus" :category :system)
    (:title "/theme [name] — Show/switch theme"    :value "/theme"  :category :system)
    (:title "/context — Show context summary"      :value "/context" :category :system)
    (:title "/context why <id> — Debug memory"     :value "/context why" :category :system)
    (:title "/context dropped — Estimate pruned"   :value "/context dropped" :category :system)
    (:title "/search <query> — Search messages"    :value "/search" :category :navigation)
    (:title "/help — Show commands"                 :value "/help"   :category :help)
    (:title "/help <topic> — Search manual"         :value "/help <topic>" :category :help))
  "Slash commands for minibuffer select-dialog.")
#+END_SRC

** Daemon Commands
#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-state.lisp
(defvar *daemon-commands*
  '((:title "Status — Daemon health info"          :value (:action :status)         :category :session)
    (:title "Stats — Daemon statistics"              :value (:action :stats)          :category :session)
    (:title "Ping — Daemon reachability"             :value (:action :ping)           :category :session)
    (:title "Memory Snapshot — Capture state"        :value (:action :memory-snapshot) :category :memory)
    (:title "Memory Rebuild — Rebuild indices"       :value (:action :memory-rebuild)  :category :memory)
    (:title "Memory Compact — Optimize storage"      :value (:action :memory-compact)  :category :memory)
    (:title "Reload Config — Reload configuration"   :value (:action :reload-config)   :category :system)
    (:title "Reload Identity — Reload identity file" :value (:action :reload-identity) :category :system)
    (:title "List Skills — Available skills"         :value (:action :list-skills)     :category :system)
    (:title "Help — Show daemon help"                :value (:action :help)           :category :help))
  "Daemon commands for the command palette (Ctrl+P).")

(defun all-commands ()
  "Merge slash commands and daemon commands into one unified list."
  (append *slash-commands* *daemon-commands*))
#+END_SRC

** Event Queue
#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-state.lisp
(defun queue-event (ev)
  (bt:with-lock-held (*event-lock*) (push ev *event-queue*)))

(defun drain-queue ()
  (bt:with-lock-held (*event-lock*)
    (let ((evs (nreverse *event-queue*)))
      (setf *event-queue* nil) evs)))
#+END_SRC