;;; bandali-erc.el --- bandali's ERC setup           -*- lexical-binding: t; -*-

;; Copyright (C) 2018-2020  Amin Bandali

;; Author: Amin Bandali <bandali@gnu.org>
;; Keywords: tools

;; 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 <https://www.gnu.org/licenses/>.

;;; Commentary:

;; My ERC setup for IRC.  It uses my fork of ZNC.el.

;;; Code:

(defvar b/erc-detach-on-kill t
  "Whether killing a channel should send a DETACH command (for ZNC).")

(with-eval-after-load 'erc
  (make-directory (b/var "erc/dcc/") t)
  (csetq
   erc-auto-query 'bury
   erc-autojoin-domain-only nil
   erc-dcc-get-default-directory (b/var "erc/dcc/")
   erc-format-nick-function 'erc-format-@nick
   erc-join-buffer 'bury
   erc-log-channels-directory (b/var "erc/log-channels/")
   erc-lurker-hide-list '("JOIN" "PART" "QUIT")
   erc-nick "bandali"
   erc-prompt "erc>"
   erc-prompt-for-password nil
   erc-rename-buffers t
   erc-server-reconnect-attempts 5
   erc-server-reconnect-timeout 3)

  (declare-function erc-message "erc-backend"
                    (message-command line &optional force))
  (declare-function erc-default-target "erc")
  (declare-function erc-current-nick "erc")
  (defun erc-cmd-OPME ()
    "Request chanserv to op me."
    (erc-message "PRIVMSG"
                 (format "chanserv op %s %s"
                         (erc-default-target)
                         (erc-current-nick))
                 nil))
  (declare-function erc-cmd-DEOP "erc" (&rest people))
  (defun erc-cmd-DEOPME ()
    "Deop myself from current channel."
    (erc-cmd-DEOP (format "%s" (erc-current-nick))))
  (add-to-list 'erc-modules 'keep-place)
  (when (display-graphic-p)
    (add-to-list 'erc-modules 'notifications))
  (add-to-list 'erc-modules 'smiley)
  (add-to-list 'erc-modules 'spelling)
  (declare-function erc-update-modules "erc")
  (erc-update-modules)

  (set-face-attribute
   'erc-nick-default-face nil
   ;; :weight 'semibold
   ;; :background "#f2f2f2"
   ;; :foreground "#222222"
   :weight 'bold
   :background "#f8f8f8"
   :foreground "#6a6a6a")

  ;; (set-face-attribute
  ;;  'erc-notice-face nil
  ;;  ;; :background "#fffadf"
  ;;  ;; :background "#f9f9f9"
  ;;  :background 'unspecified
  ;;  ;; :foreground "#809de5"
  ;;  :foreground "steel blue")

  ;; erc-fill
  ;; (csetq
  ;;  erc-fill-column 77
  ;;  erc-fill-function 'erc-fill-variable
  ;;  erc-fill-static-center 18)
  ;; to disable:
  ;; (erc-fill-mode -1)

  ;; erc-match
  (csetq
   erc-pal-highlight-type 'nick
   erc-pals
   '("aindilis" "blackbeard" "bremner" "~brettgilio?@*" "civodul"
     "dto" "ggoes" "iank" "jrasata" "mplsCorwin" "quidam" "rwp"
     "sachac" "sudoman" "technomancy"))
  (with-eval-after-load 'erc-match
    (set-face-attribute
     'erc-pal-face nil
     :foreground 'unspecified
     :weight 'unspecified
     :inherit 'erc-nick-default-face
     :background (face-attribute 'font-lock-string-face :background)))

  ;; erc-pcomplete
  (csetq erc-pcomplete-nick-postfix ",")

  ;; erc-stamp
  (csetq erc-timestamp-only-if-changed-flag nil
         erc-timestamp-format "%T "
         erc-insert-timestamp-function 'erc-insert-timestamp-left)
  (with-eval-after-load 'erc-match
    (set-face-attribute
     'erc-timestamp-face nil
     :foreground "#aaaaaa"
     :weight 'unspecified
     :background 'unspecified))

  ;; erc-track
  (csetq
   erc-track-enable-keybindings nil
   erc-track-exclude-types '("JOIN" "MODE" "NICK" "PART" "QUIT"
                             "324" "329" "332" "333" "353" "477")
   erc-track-position-in-mode-line t
   erc-track-priority-faces-only 'all
   erc-track-shorten-function nil
   erc-track-showcount t)

  ;; key bindings
  (global-set-key (kbd "C-c w e") #'erc-switch-to-buffer-other-window)
  (define-key erc-mode-map (kbd "M-a") #'erc-track-switch-buffer)

  ;; hooks
  (defun b/erc-detach-or-kill-channel ()
    (if b/erc-detach-on-kill
        (when (erc-server-process-alive)
          (let ((tgt (erc-default-target)))
            (erc-server-send (format "DETACH %s" tgt) nil tgt)))
      (erc-kill-channel)))
  (add-hook 'erc-kill-channel-hook #'b/erc-detach-or-kill-channel)
  (remove-hook 'erc-kill-channel-hook #'erc-kill-channel))

;; global key bindings
(global-set-key
 (kbd "C-c a e f")
 (lambda ()
   (interactive)
   (let* ((auth (auth-source-search :host "znca"))
          (p (if (null auth)
                 (error "Couldn't find znca's authinfo")
              (funcall (plist-get (car auth) :secret)))))
     (erc-tls :server "znc.emacsconf.org" :port 6697
              :password (concat "bandali/freenode:" p)))))
(global-set-key
 (kbd "C-c a e o")
 (lambda ()
   (interactive)
   (let* ((auth (auth-source-search :host "znca"))
          (p (if (null auth)
                 (error "Couldn't find znca's authinfo")
              (funcall (plist-get (car auth) :secret)))))
     (erc-tls :server "znc.emacsconf.org" :port 6697
              :password (concat "bandali/oftc:" p)))))
(global-set-key
 (kbd "C-c a e t")
 (lambda ()
   (interactive)
   (let* ((auth (auth-source-search :host "znca"))
          (p (if (null auth)
                 (error "Couldn't find znca's authinfo")
              (funcall (plist-get (car auth) :secret)))))
     (erc-tls :server "znc.emacsconf.org" :port 6697
              :password (concat "bandali/tildechat:" p)))))

(provide 'bandali-erc)
;;; bandali-erc.el ends here