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-rw-r--r--web/panettone/src/irc.lisp24
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diff --git a/web/panettone/src/irc.lisp b/web/panettone/src/irc.lisp
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+;;;; Using irccat to send IRC notifications
+
+(in-package :panettone.irc)
+
+(defun get-irccat-config ()
+  "Reads the IRCCATHOST and IRCCATPORT environment variables, and returns them as two values if they both exist (otherwise, returns NIL)."
+  (destructuring-bind (host port)
+      (mapcar #'uiop:getenvp '("IRCCATHOST" "IRCCATPORT"))
+    (when (and host port)
+      (values host (parse-integer port)))))
+
+(defun send-irc-notification (body &key channel)
+  "Sends BODY to the IRC channel CHANNEL (starting with #), if an IRCCat server is configured (using the IRCCATHOST and IRCCATPORT environment variables)
+If CHANNEL is NIL, sends the BODY to the first channel configured in the IRCCat configuration.
+May signal a condition if sending fails."
+  (multiple-value-bind (irchost ircport)
+      (get-irccat-config)
+    (when irchost
+      (let ((socket (socket-connect irchost ircport)))
+        (unwind-protect
+             (progn
+               (format (socket-stream socket) "~@[~A ~]~A~%" channel body)
+               (finish-output (socket-stream socket)))
+          (ignore-errors (socket-close socket)))))))