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tinmop/scripts/welcome-bot.lisp

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Common Lisp
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2020-12-26 16:11:05 +01:00
;; a simple welcomebot for tinmop
;; Copyright © 2020 cage
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;; usage:
;; after configuring tinmop (https://www.autistici.org/interzona/tinmop.html)
;; tinmop -e welcome.lisp
(in-package :scripts)
(define-constant +table-id+ "welcome-minimum-id" :test #'string=)
(defparameter *welcome-message-template* "Hi ~s!~%Enjoy the fediverse!"
"The welcome message, the '~s' is replaced with the display-name
of the welcomed user")
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(defun make-table-last-id ()
(db-utils:query-low-level (strcat (db:prepare-table +table-id+
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:autogenerated-id-p nil)
" id TEXT"
db:+make-close+)))
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(defun dump-minimum-id (minimum-id)
(db-utils:query (db-utils:make-insert :welcome-minimum-id (:id) (minimum-id))))
(defun minimum-id ()
(let ((res (db-utils:get-max-id :welcome-minimum-id)))
(when (not (numberp res)) ; workaround: db-utils:get-max-id return
; 0 instead of nil when table is empty
res)))
(defun connect ()
(client:init)
(client:authorize))
(defun create-table ()
(ignore-errors (make-table-last-id)))
(defun main ()
(connect)
(db-utils:with-ready-database (:connect t)
(create-table)
(let ((minimum-id (minimum-id)))
(assert (or (stringp minimum-id)
(null minimum-id)))
(let* ((toots (api-client:sort-id< (api-client:get-timeline :public
:local t
:min-id minimum-id)))
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(last-toot (lastcar toots)))
(when last-toot
(dump-minimum-id (tooter:id last-toot))
(loop for toot in toots do
(let* ((account (tooter:account toot))
(welcome-message (format nil
*welcome-message-template*
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(tooter:display-name account)))
(reply-id (tooter:id toot)))
(when (and (not (tooter:bot account))
(<= (tooter:statuses-count account)
1))
(format t
"[INFO] sending welcome message to ~a (~a)~%"
account reply-id)
(send-status welcome-message reply-id nil "Welcome!" :public)))))))))
(main)