f182410fd2
Previously my ERC setup just supported Google's internal IRC. Now I have Freenode for things like #nixos, #emacs. This complicated my KBDs for cycling through IRC channels since certain channels only exist on certain servers. To remedy this, I introduced a temporary solution that looks up the server given a particular channel. This isn't ideal, but it works for now.
174 lines
6.2 KiB
EmacsLisp
174 lines
6.2 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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;;; 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 'alist)
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(require 'set)
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(require 'maybe)
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(require 'macros)
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(require 'password-store)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Configuration
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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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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(alist/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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(alist/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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"Resolve an IRC server from a given CHANNEL."
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(let ((result (alist/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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"Resolve an IRC's channels cycle from a given CHANNEL."
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(alist/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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(alist/map-values #'cycle/to-list)
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(alist/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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"Kills 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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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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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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