Files
passepartout/org/channel-slack.org
Amr Gharbeia b9a4318ef8 reorg: tangle to XDG, remove stale lisp files, fix tui input
- Changed all 50 org file :tangle targets from ../lisp/ to
  ~/.local/share/passepartout/lisp/ (XDG data dir)
- Removed 49 generated .lisp files from project lisp/ directory
- Removed tests/system-integration-tests.lisp (generated)
- Removed lisp/*.fasl (compiled, stale)
- Updated core-manifest.org to tangle .asd to XDG root
- Remapped quicklisp symlink: local-projects/passepartout → XDG

TUI fixes in channel-tui-main.org:
- Removed with-raw-terminal (stty raw breaks fd 0 reads in this SBCL)
- Use cat subprocess + pipe for keyboard input (via :input :interactive)
- Blocking read-char on pipe with with-timeout 0.1s for daemon processing
- Key events queued via drain-queue alongside daemon messages
- Full dialog key routing (Escape, Up/Down, Enter, filters, Backspace)
- SIGWINCH resize handling
- Post-handshake backend-size re-query
- Daemon version in status bar (was v0.5.0 hardcoded)
- Handshake version stored in state, no add-msg
- :daemon-version and :size-queried in state plist
- view-status uses draw-rect for background
- Test section gated with #+passepartout-tests
2026-05-14 12:34:06 -04:00

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#+TITLE: Channel Slack (channel-slack.org)
#+AUTHOR: Agent
#+FILETAGS: :channel:slack:
#+PROPERTY: header-args:lisp :tangle /home/user/.local/share/passepartout/lisp/channel-slack.lisp
* Channel Slack
Extracted from gateway-messaging in v0.5.0. Isolated platform — Slack-specific poll and send logic.
* Overview
The Slack channel provides bidirectional communication via the Slack Web API
(chat.postMessage for outbound, conversations.history for inbound polling).
Messages from Slack channels are injected into the cognitive pipeline as
~:user-input~ signals with ~:source :slack~. Outbound messages route through
the actuator registry when the pipeline targets ~:slack~.
The channel uses two functions: ~slack-poll~ (inbound sensor) and ~slack-send~
(outbound actuator). Both retrieve the bot token from the credentials vault.
HITL commands are intercepted before injection so approval flows work identically
across all channels.
** Contract
1. (slack-get-token): returns the Slack bot token from the vault
(via ~vault-get-secret :slack~), or nil if not configured.
2. (slack-poll): polls configured channels via conversations.history,
injects each non-bot message as a ~:user-input~ stimulus with
~:source :slack~. Handles API errors gracefully. HITL commands are
intercepted before injection.
3. (slack-send action context): sends a message via chat.postMessage.
Extracts ~:channel-id~ and ~:text~ from the action plist. Uses Bearer
token authentication. Logs send failures without crashing the pipeline.
* Implementation
#+begin_src lisp
(in-package :passepartout)
(defun slack-get-token ()
(vault-get-secret :slack))
(defun slack-send (action context)
"Sends a message via Slack Web API."
(declare (ignore context))
(let* ((payload (getf action :payload))
(meta (getf action :meta))
(channel (or (getf meta :channel-id) (getf payload :chat-id)))
(text (or (getf payload :text) (getf action :text)))
(token (slack-get-token)))
(when (and token channel text)
(handler-case
(dex:post "https://slack.com/api/chat.postMessage"
:headers `(("Authorization" . ,(format nil "Bearer ~a" token))
("Content-Type" . "application/json; charset=utf-8"))
:content (cl-json:encode-json-to-string
`((channel . ,channel) (text . ,text))))
(error (c) (log-message "SLACK ERROR: ~a" c))))))
(defun slack-poll ()
"Polls Slack for new messages via conversations.history."
(let* ((token (slack-get-token)))
(when token
(dolist (channel '("general")) ;; configured channel IDs
(handler-case
(let* ((url (format nil "https://slack.com/api/conversations.history?channel=~a&limit=5" channel))
(response (dex:get url :headers
`(("Authorization" . ,(format nil "Bearer ~a" token))))))
(let* ((json (ignore-errors (cl-json:decode-json-from-string response)))
(ok (cdr (assoc :ok json)))
(messages (cdr (assoc :messages json))))
(when (and ok messages (listp messages))
(dolist (msg messages)
(let* ((text (cdr (assoc :text msg)))
(user (cdr (assoc :user msg)))
(ts (cdr (assoc :ts msg))))
(when (and text user (not (string= user "USLACKBOT")))
(unless (ignore-errors (hitl-handle-message text :slack))
(stimulus-inject
(list :type :EVENT
:meta (list :source :slack :chat-id channel)
:payload (list :sensor :user-input :text text))))))))))
(error (c) (log-message "SLACK POLL ERROR: ~a" c)))))))
#+end_src
#+end_src