Since I'm calling `(require 'general)` in `wpc-package.el`, which gets called at the beginning of my `init.el` file, all sub-modules have `general`. I originally wanted this, but I'm beginning to rethink that preference. After `script.el` broke my CI because of a missing `general` dependency, I'm fixing it for `buffer.el` and all other modules that consume `general`.
		
			
				
	
	
		
			183 lines
		
	
	
	
		
			6.4 KiB
		
	
	
	
		
			EmacsLisp
		
	
	
	
	
	
			
		
		
	
	
			183 lines
		
	
	
	
		
			6.4 KiB
		
	
	
	
		
			EmacsLisp
		
	
	
	
	
	
;;; irc.el --- Configuration for IRC chat -*- lexical-binding: t -*-
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;; Author: William Carroll <wpcarro@gmail.com>
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;; Version: 0.0.1
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;; URL: https://git.wpcarro.dev/wpcarro/briefcase
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;; Package-Requires: ((emacs "25.1"))
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;;; Commentary:
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;; Need to decide which client I will use for IRC.
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;;; Code:
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Dependencies
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(require 'erc)
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(require 'cycle)
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(require 'string)
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(require 'prelude)
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(require 'al)
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(require 'set)
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(require 'maybe)
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(require 'macros)
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(require '>)
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(require 'password-store)
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(require 'general)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Configuration
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(defconst irc-enable-tests? t
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  "When t, run the tests defined herein.")
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(setq erc-rename-buffers t)
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;; TODO: Find a way to avoid putting "freenode" and "#freenode" as channels
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;; here.  I'm doing it because when erc first connects, it's `(buffer-name)' is
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;; "freenode", so when `irc-next-channel' is called, it 404s on the
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;; `cycle-contains?' call in `irc-channel->cycle" unless "freenode" is there. To
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;; make matters even uglier, when `erc-join-channel' is called with "freenode"
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;; as the value, it connects to the "#freenode" channel, so unless "#freenode"
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;; exists in this cycle also, `irc-next-channel' breaks again.  This doesn't
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;; pass my smell test.
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(defconst irc-server->channels
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  `(("irc.freenode.net"    . ,(cycle-new "freenode" "#freenode" "#nixos" "#emacs" "#pass"))
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    ("irc.corp.google.com" . ,(cycle-new "#omg" "#london" "#panic" "#prod-team")))
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  "Mapping of IRC servers to a cycle of my preferred channels.")
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;; TODO: Assert that no two servers have a channel with the same name. We need
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;; this because that's the assumption that underpins the `irc-channel->server'
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;; function. This will probably be an O(n^2) operation.
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(prelude-assert
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 (set-distinct? (set-from-list
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                 (cycle-to-list
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                  (al-get "irc.freenode.net"
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                          irc-server->channels)))
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                (set-from-list
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                 (cycle-to-list
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                  (al-get "irc.corp.google.com"
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                          irc-server->channels)))))
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(defun irc-channel->server (server->channels channel)
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  "Using SERVER->CHANNELS, resolve an IRC server from a given CHANNEL."
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  (let ((result (al-find (lambda (k v) (cycle-contains? channel v))
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                         server->channels)))
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    (prelude-assert (maybe-some? result))
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    result))
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(defun irc-channel->cycle (server->channels channel)
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  "Using SERVER->CHANNELS, resolve an IRC's channels cycle from CHANNEL."
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  (al-get (irc-channel->server server->channels channel)
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          server->channels))
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;; Setting `erc-join-buffer' to 'bury prevents erc from stealing focus of the
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;; current buffer when it connects to IRC servers.
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(setq erc-join-buffer 'bury)
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;; TODO: Here is another horrible hack that should be revisted.
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(setq erc-autojoin-channels-alist
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      (->> irc-server->channels
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           (al-map-values #'cycle-to-list)
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           (al-map-keys (>-> (s-chop-prefix "irc.")
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                             (s-chop-suffix ".net")))))
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(defcustom irc-install-kbds? t
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  "When t, install the keybindings defined herein.")
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Library
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun irc-message (x)
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  "Print message X in a structured way."
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  (message (string-format "[irc.el] %s" x)))
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;; TODO: Integrate Google setup with Freenode setup.
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;; TODO: Support function or KBD for switching to an ERC buffer.
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(defun irc-kill-all-erc-processes ()
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  "Kill all ERC buffers and processes."
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  (interactive)
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  (->> (erc-buffer-list)
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       (-map #'kill-buffer)))
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(defun irc-switch-to-erc-buffer ()
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  "Switch to an ERC buffer."
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  (interactive)
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  (let ((buffers (erc-buffer-list)))
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    (if (list-empty? buffers)
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        (error "[irc.el] No ERC buffers available")
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      (switch-to-buffer (list-head (erc-buffer-list))))))
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(defun irc-connect-to-freenode ()
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  "Connect to Freenode IRC."
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  (interactive)
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  (erc-ssl :server "irc.freenode.net"
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           :port 6697
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           :nick "wpcarro"
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           :password (password-store-get "programming/irc-freenode")
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           :full-name "William Carroll"))
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;; TODO: Handle failed connections.
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(defun irc-connect-to-google ()
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  "Connect to Google's Corp IRC using ERC."
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  (interactive)
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  (erc-ssl :server "irc.corp.google.com"
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           :port 6697
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           :nick "wpcarro"
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           :full-name "William Carroll"))
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;; TODO: Prefer defining these with a less homespun solution. There is a
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;; function call `erc-buffer-filter' that would be more appropriate for the
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;; implementation of `irc-next-channel' and `irc-prev-channel'.
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(defun irc-next-channel ()
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  "Join the next channel for the active server."
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  (interactive)
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  (with-current-buffer (current-buffer)
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    (let ((cycle (irc-channel->cycle irc-server->channels (buffer-name))))
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      (erc-join-channel
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       (cycle-next cycle))
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      (irc-message
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       (string-format "Current IRC channel: %s" (cycle-current cycle))))))
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(defun irc-prev-channel ()
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  "Join the previous channel for the active server."
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  (interactive)
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  (with-current-buffer (current-buffer)
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    (let ((cycle (irc-channel->cycle irc-server->channels (buffer-name))))
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      (erc-join-channel
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       (cycle-prev cycle))
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      (irc-message
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       (string-format "Current IRC channel: %s" (cycle-current cycle))))))
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(add-hook 'erc-mode-hook (macros-disable auto-fill-mode))
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(add-hook 'erc-mode-hook (macros-disable company-mode))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Keybindings
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(when irc-install-kbds?
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  (general-define-key
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   :keymaps 'erc-mode-map
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   "<C-tab>" #'irc-next-channel
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   "<C-S-iso-lefttab>" #'irc-prev-channel))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Tests
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(when irc-enable-tests?
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  (prelude-assert
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   (equal
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    (irc-channel->server `(("irc.dairy.com" . ,(cycle-new "#cheese" "#milk"))
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                           ("irc.color.com" . ,(cycle-new "#red" "#blue")))
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                         "#cheese")
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    "irc.dairy.com")))
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(provide 'irc)
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;;; irc.el ends here
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