#+TITLE: Circe config

#+BEGIN_SRC emacs-lisp
  (require 'circe)
  (require 'circe-color-nicks)
  (require 'circe-serenity)
  (require 'oni-circe)
  (require 'mowedline)
#+END_SRC

I switched to Circe from ERC because I couldn't make the
customizations I wanted to, Circe seems much better at this.

I spend most of my time on IRC on Freenode.

#+BEGIN_SRC emacs-lisp -r -l ";(ref:%s)"
  (add-to-list 'circe-network-options
               `("Freenode"
                 :nick "ryuslash"
                 :channels ("#mowedline"
                            "#ninthfloor"
                            "#dispass"
                            "#linuxvoice"
                            "#conkeror"
                            "#emacs-circe"
                            "#chicken"
                            :after-auth   ;(ref:aauth)
                            "#emacs")
                 :nickserv-password
                 ,(oni-circe-get-password-for "irc.freenode.net")))
#+END_SRC

The [[(aauth)][:after-auth]] keyword is used to specify that the =#emacs= channel
should only be joined once the authentication with NickServ has
finished. This has apparently become a requirement.

Sometimes I watch some Twitch streams as well.

#+BEGIN_SRC emacs-lisp
  (add-to-list 'circe-network-options
               `("Twitch"
                 :use-tls nil
                 :nick "ryuslash"
                 :host "irc.twitch.tv"
                 :pass ,(oni-circe-get-password-for "irc.twitch.tv")
                 :port 6667))
#+END_SRC

Enable coloring of nicks.

#+BEGIN_SRC emacs-lisp
  (enable-circe-color-nicks)
#+END_SRC

Align all nicks and generally clean up the buffer. I call it: Circe
Serenity.

#+BEGIN_SRC emacs-lisp
  (enable-circe-serenity)
#+END_SRC

Add external tracking.  Show the status of tracked buffers in
mowedline instead in the mode-line. With color!

This code has been generously donated by [[http://retroj.net][retroj]], the author of
mowedline.

First define a function to parse the text properties from the tracking
buffers list so that highlights (from mentions) also appear in
mowedline.

#+BEGIN_SRC emacs-lisp
  (defun mowedline-colorize-mode-line-spec (s)
    (cond
     ((stringp s) (string-trim s))
     ((eq ':propertize (car s))
      (let ((s (cadr s))
            (face (plist-get (cddr s) 'face)))
        (if face
            `(color ,(face-foreground face)
                    ,(substring-no-properties s))
          s)))
     (t "")))
#+END_SRC

Also tell mowedline to use the dbus interface directly, instead of
going through the command-line interface.

#+BEGIN_SRC emacs-lisp
  (setq mowedline-update-function 'mowedline-update/dbus)
#+END_SRC

#+BEGIN_SRC emacs-lisp
  (defvar jjf-tracking-buffers '())
  (defvar jjf-external-tracking-timer nil)
  (defun jjf-external-tracking ()
    (setq jjf-external-tracking-timer nil)
    (mowedline-update
     'irc
     (if (stringp jjf-tracking-buffers)
         (mowedline-colorize jjf-tracking-buffers t)
       (format "%S" (mapcar #'mowedline-colorize-mode-line-spec
                            jjf-tracking-buffers)))))

  (defun oni:clear-irc-mowedline-widget ()
    (mowedline-clear 'irc))

  (defun jjf-external-tracking-advice (orig-fun &rest args)
    "Update my external status bar when tracking computes a new
  status line, and suppress tracking in the mode-line.  Since
  tracking-status may be called many times in quick succession, for
  example on a make-frame-visible event, we use a short timer to
  only call the updater once within a minimum duration."
    (setq jjf-tracking-buffers (apply orig-fun args))
    (when jjf-external-tracking-timer
      (cancel-timer jjf-external-tracking-timer))
    (setq jjf-external-tracking-timer
          (run-at-time 0.2 nil 'jjf-external-tracking))
    nil)

  (advice-add 'tracking-status :around #'jjf-external-tracking-advice)
  (add-hook 'kill-emacs-hook 'oni:clear-irc-mowedline-widget)
#+END_SRC