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;;; acdw-erc.el -*- lexical-binding: t; coding: utf-8-unix -*-
;; Author: Case Duckworth <acdw@acdw.net>
;; Created: 24 May 2021
;; Keywords: configuration
;; URL: https://tildegit.org/acdw/emacs
;; This file is NOT part of GNU Emacs.
;;; License:
;; Everyone is permitted to do whatever with this software, without
;; limitation. This software comes without any warranty whatsoever,
;; but with two pieces of advice:
;; - Don't hurt yourself.
;; - Make good choices.
;;; Commentary:
;; `acdw-erc' is a dumping ground for functions and stuff for ERC, so they
;; don't clutter up `init.el'.
;;; Code:
(defgroup acdw-erc nil
"Customizations for ERC."
:group 'erc)
;;; Show a different header-line face when ERC is disconnected.
;; https://www.emacswiki.org/emacs/ErcModeline#h5o-1
(defface erc/header-line-disconnected
'((t (:foreground "black" :background "indianred")))
"Face to use when ERC has been disconnected.")
(defun erc/update-header-line-show-disconnected ()
"Use a different face in the header-line when disconnected."
(erc-with-server-buffer
(cond ((erc-server-process-alive) 'erc-header-line)
(t 'erc/header-line-disconnected))))
;;; Convenience functions
;; from Prelude:
;; https://github.com/bbatsov/prelude/blob/master/modules/prelude-erc.el#L114
(defcustom erc/servers nil
"The list of IRC servers to connect to with `erc/connect'."
:type '(list string))
(defcustom erc/bye-message "See You Space Cowpokes."
"Quit message sent when calling `erc/disconnect'."
:type 'string)
(defun connect-to-erc (server &optional use-tls port nick)
"Connects to IRC SERVER at PORT with NICK.
If USE-TLS is non-nil, use TLS."
(let* ((use-tls (or use-tls t))
(erc-fn (if use-tls #'erc-tls #'erc))
(port (or port (if use-tls 6697 6667)))
(nick (or nick erc-nick)))
(funcall erc-fn
:server server
:port port
:nick nick)))
(defun erc/connect ()
"Connect to all the servers in `erc/servers'."
(interactive)
(mapcar #'connect-to-erc erc/servers))
(defun filter-server-buffers ()
(delq nil (mapcar (lambda (x)
(and (erc-server-buffer-p x) x))
(buffer-list))))
(defun erc/disconnect ()
"Disconnect from all IRC servers."
(interactive)
(dolist (buffer (filter-server-buffers))
(with-message (format "Killing server buffer: %s" (buffer-name buffer))
(with-current-buffer buffer
(erc-quit-server acdw-erc/bye-message)))))
(provide 'acdw-erc)
;;; acdw-erc.el ends here
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