(module vandusen-pager ()

(import scheme)
(import (chicken base)
        (chicken format)
        (chicken string)
        (chicken time)
        (chicken time posix))
(import irc srfi-1)
(import vandusen)

(plugin 'pager
        (lambda ()
          (define tasks '())

          (define (add-task! from nick text)
            (let ((msg (list (seconds->string (current-seconds)) from text)))
              (cond ((alist-ref nick tasks equal?) => (lambda (k) (set! tasks (alist-update! nick (cons msg k) tasks equal?))))
                    (else (set! tasks (alist-cons nick (cons msg '()) tasks))))))

          (command 'tell
                   '(: "tell" (+ space) (submatch (+ (~ (or space #\, #\:)))) (or #\, #\:) (* space) (submatch (+ any)))
                   (lambda (master nick msg)
                     (add-task! (irc:message-sender master) nick msg)
                     (reply-to master (format "I will tell ~a when he/she speaks again." nick)))
                   public: #t)

          (command 'list-messages
                   '(: "messages" (* any))
                   (lambda (m . rest)
                     (reply-to m (format "I am holding ~a messages in my head:~%~A" (length tasks) tasks))))

          (message-handler (lambda (m)
                             (cond ((alist-ref (irc:message-sender m) tasks equal?) =>
                                    (lambda (msgs)
                                      (for-each (lambda (msg)
                                                  (reply-to m (conc (first msg) " " (second msg) ": " (third  msg))))
                                                msgs)
                                      (set! tasks (alist-delete (irc:message-sender m) tasks equal?)))))
                             #f)
                           command: "PRIVMSG"))))