;;; -*- lexical-binding: t -*-
;;
;; this file:
;;   https://dataswamp.org/~incal/emacs-init/erc/erc-incal.el
;;
;; all ERC:
;;   https://dataswamp.org/~incal/emacs-init/erc/

(require 'erc)
(require 'erc-element)
(require 'erc-fill)
(require 'erc-goodies)
(require 'erc-iterate)
(require 'erc-join)
(require 'erc-kill)
(require 'erc-log)
(require 'erc-pcomplete)
(require 'erc-ring)
(require 'erc-scroll)
(require 'erc-spell)
(require 'mode-line)
(require 'super)
(require 'w3m-url)
(require 'warnings)

(setq-default erc-ignore-list '(
                                "crierc"
                                "danse-nr3"
                                "habamax"
                                "JohnGalt"
                                "twb"
                                "weary-traveler"
                                ))

(setq erc-show-speaker-membership-status nil)

(setq erc-interpret-controls-p t)

(setq erc-nick user-login-name)
(setq erc-user-full-name user-login-name)

(defun znc-connect ()
  (interactive)
  (let*((ds-znc-name   "znc")
        (ds-znc-server "127.0.0.1")
        (ds-znc-port   6668)
        (ds-znc-passwd (auth-source-pick-first-password :host ds-znc-name)) )
    (erc :server   ds-znc-server
         :port     ds-znc-port
         :user     erc-nick
         :nick     erc-nick
         :password ds-znc-passwd) ))

(defalias 'zconnect #'znc-connect)

(let*((dataswamp-name   "dataswamp")
      (dataswamp-org     (format "%s.org" dataswamp-name))
      (dataswamp-server  (format "irc.%s" dataswamp-org))
      (dataswamp-channel (erc-ensure-channel-name dataswamp-name))
      (dataswamp-buffer  (format "%s@%s" dataswamp-channel dataswamp-org))
      (dataswamp-port    6697)

      (emacs-channel (erc-ensure-channel-name "emacs"))

      (libera-name     "libera.chat")
      (libera-server   (format "irc.eu.%s" libera-name))
      (libera-password (auth-source-pick-first-password :host libera-name)) )

  (setq erc-server dataswamp-server)
  (setq erc-port   dataswamp-port)

  (setq erc-autojoin-channels-alist
    (list
      (cons dataswamp-server (list dataswamp-channel "#ghost"))
      (cons libera-name      (list dataswamp-channel "#erc")) ))

  (defun erc-send-libera-password ()
    (interactive)
    (erc-cmd-MSG
      (format "NickServ IDENTIFY %s %s" user-login-name libera-password) ))

  (declare-function erc-send-libera-password nil)
  (defalias 'id #'erc-send-libera-password)

  (defun erc-get-connect-servers ()
    (list (list libera-server libera-password t)) )

  (declare-function erc-get-connect-servers nil)

  (defun goto-dataswamp ()
    (interactive)
    (let ((cbuf (current-buffer))
          (dbuf (get-buffer dataswamp-buffer))
          (ebuf (get-buffer emacs-channel)) )
      (if (eq cbuf dbuf)
          (switch-to-erc-buffer ebuf)
        (switch-to-erc-buffer dbuf) )))

  (declare-function goto-dataswamp nil) )

;; settings

(setq erc-hide-list '("JOIN" "KICK" "MODE" "NICK" "PART" "QUIT"))

(setq erc-header-line-format          nil)
(setq erc-interpret-mirc-color        t)
(setq erc-kill-server-buffer-on-quit  t)
(setq erc-pcomplete-nick-postfix     ",")
(setq erc-prompt                     "$")
(setq erc-server-reconnect-attempts   t)
(setq warning-suppress-types         '((erc)))

;; mode line
(setq erc-mode-line-away-status-format "ERC - away")
(setq erc-mode-line-format "%-41t%35S")

;; fill
(setq erc-fill-function      #'erc-fill-static)
(setq erc-fill-static-center 12)

;; hide
(defun erc-cmd-C ()
  (interactive)
  (recenter 0) )

;; keys

(defun set-erc-element-keys (kmap)
  (define-key kmap [backtab] #'erc-element-prev)
  (define-key kmap "\t"      #'erc-element-next) )

(defun set-erc-keys ()
  (let ((kmap erc-mode-map))
    (disable-super-global-keys kmap)

    (set-erc-element-keys kmap)
    (set-erc-element-keys erc-button-keymap)

    (define-key kmap "\C-xk" #'erc-kill-buffer-stay)
    (define-key kmap "\M-;"  #'ignore)
    (define-key kmap "\M-n"  #'goto-dataswamp)
    (define-key kmap "\M-ss" #'w3m-kill-url-dwim)
    (define-key kmap "\r"    #'erc-spell-then-send)

    ;; scroll top/bottom
    (define-key kmap "\C-oi" #'erc-scroll-to-top-no-blanks)
    (define-key kmap "\C-ok" #'erc-scroll-to-bottom-no-blanks)

    ;; command history
    (define-key kmap "\M-P" #'erc-previous-command)
    (define-key kmap "\M-N" #'erc-next-command)

    ;; iterate ERC buffers
    (define-key kmap "\C-\M-p" (lambda () (interactive) (erc-prev-buffer t)))
    (define-key kmap "\C-\M-n" (lambda () (interactive) (erc-next-buffer t)))
  ))

(defun erc-mode-hook-f ()
  (visual-line-mode)
  (abbrev-mode)
  (set-erc-keys)
  (lines) )
(add-hook 'erc-mode-hook #'erc-mode-hook-f)

(provide 'erc-incal)