;;; oni-core.el --- Core Emacs configuration         -*- lexical-binding: t; -*-

;; Copyright (C) 2019  Tom Willemse

;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: local
;; Version: 2024.1014.135848
;; Package-Requires: (oni-data-dir oni-embrace oni-hydra expand-region multiple-cursors gcmh diminish ws-butler which-key insert-char-preview mixed-pitch ace-window vertico marginalia orderless consult embark docstr mini-frame)

;; 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:

;; Core Emacs configuration, doesn't need any requires from within
;; Emacs. These settings don't seem to go anywhere else. Add the following to
;; your init file in case you want to use this configuration:
;;
;;     (require 'oni-core)

;;; Code:

(require 'auth-source)
(require 'diminish)
(require 'gcmh)
(require 'generic-x)
(require 'hydra)
(require 'package)
(require 'recentf)
(require 'which-key)
(require 'ws-butler)

(require 'oni-data-dir)

(defconst oni-core--auto-save-directory (oni-data-dir-locate "auto-save-files/")
  "Directory where auto-saves go.")

(defalias 'yes-or-no-p 'y-or-n-p)

(defvar oni-core--recentf-idle-timer nil
  "Internal variable keeping track of a timer started for ‘recentf-save-list’.")

(defun oni-core--switch-newline-keys ()
  "Switch the ‘C-j’ and ‘RET’ keys in the local buffer."
  (if electric-indent-mode
      (progn
        (local-set-key (kbd "C-j") 'newline)
        (local-set-key (kbd "RET") 'electric-newline-and-maybe-indent))
    (local-unset-key (kbd "C-j"))
    (local-unset-key (kbd "RET"))))

(defun oni-core--ensure-autosave-directory-exists ()
  "Create the autosave directory if doesn't exist."
  (mkdir oni-core--auto-save-directory t))

(defun oni-core-move-beginning-of-dwim ()
  "Move to beginning of line either after indentation or before."
  (interactive)
  (let ((start (point)))
    (back-to-indentation)
    (unless (/= start (point))
      (move-beginning-of-line 1))))

(defun oni-core-move-end-of-dwim ()
  "Move to end of line, either before any comments or after."
  (interactive)
  (let ((start (point))
        (eolpos (line-end-position)))
    (beginning-of-line)
    (if (and comment-start
             (not (looking-at (regexp-quote comment-start)))
             (comment-search-forward eolpos t))
        (condition-case _
            (progn
              (search-backward-regexp (concat "[^ \t" comment-start "]"))
              (forward-char)
              (when (or (bolp)
                        (= start (point)))
                (end-of-line)))
          (search-failed (end-of-line)))
      (end-of-line))))

;;; From Bastien Guerry’s Emacs configuraiton:
;;; https://github.com/bzg/dotemacs/blob/master/emacs.org
(defun oni-core-unfill-paragraph ()
  "Make a multi-line paragraph into a single line of text."
  (interactive)
  (let ((fill-column (point-max)))
    (fill-paragraph nil)))

(defun oni-core-recentf-save-list-silently ()
  "Call ‘recentf-save-list’ but without showing a message about it."
  (let ((inhibit-message t))
    (recentf-save-list)))

(defhydra oni-sort-and-align-hydra (:color teal :hint nil)
  "
     ^Sort^
^^--------------
_l_: Lines
_p_: Paragraph
_s_: String list"
  ("l" sort-lines)
  ("p" (save-excursion
         (sort-lines
          nil
          (progn (start-of-paragraph-text) (point))
          (progn (end-of-paragraph-text) (point)))))
  ("s" (sort-regexp-fields
        nil
        (rx "\"" (one-or-more (not "\"")) "\"")
        (rx (one-or-more (not "\"")))
        (region-beginning)
        (region-end))))

(defhydra oni-core-applications-hydra (:color teal :hint nil)
  "
                    ^^^Applications^^^
 ^^--------------------^^-----------------^^--------------
 _m_: Email (notmuch)  _r_: RSS (elfeed)  _i_: IRC (circe) "
  ("m" notmuch)
  ("r" elfeed)
  ("i" circe))

(add-to-list 'auto-save-file-name-transforms
	         `(".*" ,oni-core--auto-save-directory t)
	         :append)

(setq backup-directory-alist
      `((".*" . ,(oni-data-dir-locate "backup-files"))))

(setq auto-save-list-file-prefix
      (oni-data-dir-locate "auto-save-list/.saves-"))

(setq abbrev-file-name (oni-data-dir-locate "abbrev_defs"))

(setq recentf-save-file (oni-data-dir-locate "recentf"))

;;; Get rid of the default help tooltip on the mode-line.
(setq mode-line-default-help-echo nil)

(setq user-full-name "Tom Willemse"
      user-mail-address "tom@ryuslash.org")

(setq delete-old-versions t)
(setq kept-new-versions 20)
(setq kept-old-versions 20)
(setq vc-make-backup-files t)
(setq version-control t)
(setq require-final-newline t)
(setq sentence-end-double-space nil)
(setq inhibit-startup-screen t)
(setq electric-pair-skip-whitespace 'chomp)
(setq fit-window-to-buffer-horizontally t)
;; Discovered through
;; https://github.com/novoid/dot-emacs/blob/23c28944f1991c636ea71ec7d5c3d266e6dbeb8a/config.org#deletes-duplicate-entries-of-the-history-of-the-minibuffer
(setq history-delete-duplicates t)
;; Save what's in the clipboard into the kill-ring before killing or copying
;; another string.
(setq save-interprogram-paste-before-kill t)

;; Increase the threshold for garbage collection for increased performance.
;; Apparently there are some (lsp-mode for example) packages that generate a lot
;; of garbage.
(setq gc-cons-threshold 100000000)

;;; Remove ~/.authinfo from the auth sources since it’s an unencripted file and
;;; I don’t want to accidentally store anything in there.
(setq auth-sources
      (cons "secrets:Login"
            (remove "~/.netrc"
                    (remove "~/.authinfo" auth-sources))))

(setq read-mail-command 'gnus)

(setq-default indent-tabs-mode nil)
(setq-default tab-width 4)
(setq-default truncate-lines t)
(setq-default fill-column 80)

(add-hook 'Info-mode-hook 'mixed-pitch-mode)
(add-hook 'after-save-hook 'executable-make-buffer-file-executable-if-script-p)
(add-hook 'auto-save-hook #'oni-core--ensure-autosave-directory-exists)
(add-hook 'before-save-hook 'time-stamp)
(add-hook 'electric-indent-local-mode-hook #'oni-core--switch-newline-keys)
(add-hook 'prog-mode-hook 'goto-address-prog-mode)

(global-set-key (kbd "C-M-SPC") 'er/expand-region)
(global-set-key (kbd "C-S-b") 'windmove-left)
(global-set-key (kbd "C-S-f") 'windmove-right)
(global-set-key (kbd "C-S-n") 'windmove-down)
(global-set-key (kbd "C-S-p") 'windmove-up)
(global-set-key (kbd "C-c (") '("Embrace Commander" . embrace-commander))
(global-set-key (kbd "C-c q") '("Unfill Paragraph" . oni-core-unfill-paragraph))
(global-set-key (kbd "C-c s") '("Sort and Align Commands" . oni-sort-and-align-hydra/body))
(global-set-key (kbd "C-c a") '("Applications" . oni-core-applications-hydra/body))
(global-set-key (kbd "C-c l") 'imenu)
(global-set-key (kbd "C-x C-b") '("List Buffers" . ibuffer-jump))
(global-set-key (kbd "C-x M-f") 'ffap)
(global-set-key (kbd "M-+") 'mc/mark-next-like-this)
(global-set-key [remap insert-char] 'insert-char-preview)
(global-set-key [remap move-beginning-of-line] #'oni-core-move-beginning-of-dwim)
(global-set-key [remap move-end-of-line] #'oni-core-move-end-of-dwim)
(global-set-key [remap upcase-word] #'upcase-dwim)
(global-set-key [remap downcase-word] #'downcase-dwim)
(global-set-key [remap capitalize-word] #'capitalize-dwim)

(global-set-key (kbd "C-<left>") 'winner-undo)
(global-set-key (kbd "C-<right>") 'winner-redo)

(global-set-key (kbd "M-o") 'ace-window)
(global-unset-key (kbd "C-x o"))

(unless oni-core--recentf-idle-timer
  (setq oni-core--recentf-idle-timer
        (run-with-idle-timer 10 t #'oni-core-recentf-save-list-silently)))

(with-eval-after-load 'gcmh (diminish 'gcmh-mode))
(with-eval-after-load 'ws-butler (diminish 'ws-butler-mode))
(with-eval-after-load 'which-key (diminish 'which-key-mode))

(add-to-list 'display-buffer-alist
             `(,(rx string-start
                    "*" (any ?h ?H) "elp")
               display-buffer-in-side-window
               (side . bottom)
               (slot . 0)
               (window-height . 0.33)))

(when (eql system-type 'windows-nt)
  (add-to-list 'load-path (locate-user-emacs-file "vendor/p4-vc"))
  (add-to-list 'exec-path "c:/Program Files/Git/bin")
  (add-to-list 'exec-path "C:/Program Files/Git/usr/bin")
  (add-to-list 'exec-path "c:/cygwin64/bin" t)

  (setq delete-by-moving-to-trash t)

  (setq-default buffer-file-coding-system 'utf-8-unix))

;; Set up autoloads for all of my configuration files so that when they get
;; installed they get loaded automatically, but don’t require them to be
;; installed.

(with-eval-after-load 'ahk-mode (require 'oni-autohotkey))
(with-eval-after-load 'alert (require 'oni-alert))
(with-eval-after-load 'bat-mode (require 'oni-bat))
(with-eval-after-load 'bats (require 'oni-bats))
(with-eval-after-load 'bookmark (require 'oni-bookmark))
(with-eval-after-load 'browse-url (require 'oni-browse-url))
(with-eval-after-load 'cc-mode (require 'oni-c nil t))
(with-eval-after-load 'cc-mode (require 'oni-cpp nil t))
(with-eval-after-load 'cc-mode (require 'oni-java nil t))
(with-eval-after-load 'cider (require 'oni-clojure))
(with-eval-after-load 'circe (require 'oni-circe))
(with-eval-after-load 'clojure-mode (require 'oni-clojure))
(with-eval-after-load 'cmake-mode (require 'oni-cmake))
(with-eval-after-load 'company (require 'oni-company))
(with-eval-after-load 'compile (require 'oni-compilation))
(with-eval-after-load 'conf-mode (require 'oni-conf))
(with-eval-after-load 'counsel (require 'oni-counsel))
(with-eval-after-load 'csharp-mode (require 'oni-csharp))
(with-eval-after-load 'css-mode (require 'oni-css))
(with-eval-after-load 'diff-hl (require 'oni-diff-hl))
(with-eval-after-load 'dired (require 'oni-dired))
(with-eval-after-load 'ediff (require 'oni-ediff))
(with-eval-after-load 'elfeed (require 'oni-elfeed))
(with-eval-after-load 'elisp-mode (require 'oni-elisp))
(with-eval-after-load 'elm-mode (require 'oni-elm))
(with-eval-after-load 'embrace (require 'oni-embrace))
(with-eval-after-load 'emms (require 'oni-emms))
(with-eval-after-load 'eshell (require 'oni-eshell))
(with-eval-after-load 'fish-mode (require 'oni-fish))
(with-eval-after-load 'flycheck (require 'oni-flycheck))
(with-eval-after-load 'git-commit (require 'oni-git-commit))
(with-eval-after-load 'gnus (require 'oni-gnus))
(with-eval-after-load 'grep (require 'oni-grep))
(with-eval-after-load 'groovy-mode (require 'oni-groovy))
(with-eval-after-load 'haskell-mode (require 'oni-haskell))
(with-eval-after-load 'highlight-indent-guides (require 'oni-highlight-indent-guides))
(with-eval-after-load 'hydra (require 'oni-hydra))
(with-eval-after-load 'ielm (require 'oni-elisp))
;; (with-eval-after-load 'ivy (require 'oni-ivy))
(with-eval-after-load 'jabber (require 'oni-jabber))
(with-eval-after-load 'js2-mode (require 'oni-js))
(with-eval-after-load 'json-mode (require 'oni-json))
(with-eval-after-load 'lisp-mode (require 'oni-common-lisp))
(with-eval-after-load 'log-edit (require 'oni-log-edit))
(with-eval-after-load 'lsp (require 'oni-lsp))
(with-eval-after-load 'lua-mode (require 'oni-lua))
(with-eval-after-load 'lui (require 'oni-lui))
(with-eval-after-load 'magit (require 'oni-magit))
(with-eval-after-load 'make-mode (require 'oni-makefile))
(with-eval-after-load 'notmuch (require 'oni-notmuch))
(with-eval-after-load 'nov (require 'oni-epub))
(with-eval-after-load 'org (require 'oni-org))
(with-eval-after-load 'org-roam (require 'oni-org-roam))
(with-eval-after-load 'package (require 'oni-package))
(with-eval-after-load 'package-x (require 'oni-package))
(with-eval-after-load 'paredit (require 'oni-paredit))
(with-eval-after-load 'php-mode (require 'oni-php))
(with-eval-after-load 'prescient (require 'oni-prescient))
(with-eval-after-load 'projectile (require 'oni-projectile))
(with-eval-after-load 'python (require 'oni-python))
(with-eval-after-load 'ruby-mode (require 'oni-ruby))
(with-eval-after-load 'rust-mode (require 'oni-rust))
(with-eval-after-load 'scheme (require 'oni-scheme))
(with-eval-after-load 'sgml-mode (require 'oni-html))
(with-eval-after-load 'sh (require 'oni-sh))
(with-eval-after-load 'shr (require 'oni-shr))
(with-eval-after-load 'smartparens (require 'oni-smartparens))
(with-eval-after-load 'sort (require 'oni-sort))
(with-eval-after-load 'tramp (require 'oni-tramp))
(with-eval-after-load 'web-mode (require 'oni-web))

(with-eval-after-load 'yasnippet
  (require 'oni-yasnippet)
  (when (and (package-installed-p 'oni-yasnippet)
             (not yas-global-mode))
    (yas-global-mode)))

(eval-when-compile
  (require 'calendar))

(with-eval-after-load 'calendar
  ;; I’m used to working with Monday as the starting day.
  (setq calendar-week-start-day 1
        calendar-date-style 'iso))

(eval-when-compile (require 'solar))
(with-eval-after-load 'solar
  (setq calendar-latitude 49.2127205
        calendar-longitude -122.9267927))

(defun oni-core-in-word-p ()
  "Check whether the character just typed was part of a word."
  (save-excursion
    (backward-char)
    (looking-back (rx word) (1- (point)))))

(defun oni-core-ace-window-select-other-window ()
  "Use ‘ace-window’ to select which window is considered “other”."
  (interactive)
  (setq other-window-scroll-buffer (ace-select-window)))

(with-eval-after-load 'electric
  (add-hook 'electric-quote-inhibit-functions #'oni-core-in-word-p))

(eval-when-compile (require 'ispell))
(with-eval-after-load 'ispell
  (setq ispell-program-name "hunspell"
        ispell-really-hunspell t))

;; Enable any modes that I want to have turned on right away.

(electric-indent-mode -1)
(winner-mode)
(recentf-mode)
(gcmh-mode)
(ws-butler-global-mode)
(which-key-mode)
(auto-insert-mode)
(global-diff-hl-mode)
;;; Remember minibuffer history across sessions.
(savehist-mode)
;;; Remember the place I left at in files when closing them.
(save-place-mode)
;;; Mitigate performance issues with files with _really_ long lines.
(global-so-long-mode)

;;; Minibuffer

(add-hook 'minibuffer-setup-hook 'electric-pair-local-mode)
(add-hook 'minibuffer-setup-hook 'cursor-intangible-mode)

(setq minibuffer-prompt-properties
      (append '(cursor-intangible t) minibuffer-prompt-properties))

(setq read-extended-command-predicate 'command-completion-default-include-p)
(setq read-buffer-completion-ignore-case t)
(setq read-file-name-completion-ignore-case t)
(setq completion-ignore-case t)

;;; Vertico

(vertico-mode)

(define-key vertico-map (kbd "<return>") 'vertico-directory-enter)
(define-key vertico-map (kbd "<backspace>") 'vertico-directory-delete-char)
(define-key vertico-map (kbd "M-<backspace>") 'vertico-directory-delete-word)

;;; Marginalia

(define-key minibuffer-local-map (kbd "M-A") 'marginalia-cycle)

(marginalia-mode)

;;; Orderless

(setq completion-styles '(basic partial-completion orderless))

(with-eval-after-load 'orderless
  (add-to-list 'orderless-matching-styles 'orderless-initialism))

;;; Consult

(global-set-key (kbd "C-c w d") '("Delete a window" . ace-delete-window))
(global-set-key (kbd "C-c w k") '("Keep a single window" . ace-delete-other-windows))
(global-set-key (kbd "C-c w o") '("Select other window" . oni-core-ace-window-select-other-window))
(global-set-key (kbd "M-g M") '("Jump to a mark anywhere" . consult-global-mark))
(global-set-key (kbd "M-g m") '("Jump to a mark" . consult-mark))
(global-set-key [remap bookmark-jump] 'consult-bookmark)
(global-set-key [remap goto-line] 'consult-goto-line)
(global-set-key [remap imenu] 'consult-imenu)
(global-set-key [remap project-switch-to-buffer] 'consult-project-buffer)
(global-set-key [remap projectile-switch-to-buffer] 'consult-project-buffer)
(global-set-key [remap switch-to-buffer] 'consult-buffer)
(global-set-key [remap yank-pop] 'consult-yank-pop)

(global-set-key (kbd "C-x 8 l") "λ")

(defun oni-core-related-files ()
  "Return a list of files related to the current buffer."
  (let* ((jumpers related-files-jumpers)
         (current-place (buffer-file-name)))
    (cond ((not jumpers)
           (user-error "No jumpers.  Consider configuring `related-files-jumpers'"))
          ((not current-place)
           (user-error "Related-Files only works from file-based buffers"))
          (t
           (related-files--collect-existing-places jumpers (list current-place))))))

(defvar oni-core-related-places-source
  '(:name "Related File"
    :category file
    :items oni-core-related-files
    :enabled buffer-file-name
    :action find-file))

(eval-when-compile
  (require 'consult))

(with-eval-after-load 'consult
  (with-eval-after-load 'related-files
    (add-to-list 'consult-buffer-sources 'oni-core-related-places-source))

  (consult-customize consult-buffer consult-bookmark :preview-key nil))

;;; Embark

(global-set-key (kbd "C-.") 'embark-act)
(global-set-key (kbd "C-;") 'embark-dwim)
(global-set-key [remap describe-bindings] 'embark-bindings)

(defun oni-core-fit-window-to-buffer (window)
  (fit-window-to-buffer window)
  (with-selected-window window
    (enlarge-window-horizontally 1)))

(add-to-list 'display-buffer-alist
             `(,(rx string-start " *Embark Actions*")
               display-buffer-in-side-window
               (window-parameter (mode-line-format . none))
               (side . right)
               (slot . 0)
               (window-width . oni-core-fit-window-to-buffer)))

;;; Extra debugging

;;; From https://gist.github.com/jdtsmith/1fbcacfe677d74bbe510aec80ac0050c
(defun oni-core-reraise-error (func &rest args)
  "Call function FUNC with ARGS and re-raise any error which occurs.
Useful for debugging post-command hooks and filter functions,
which normally have their errors suppressed."
  (condition-case err
      (apply func args)
    ((debug error) (signal (car err) (cdr err)))))

(defun toggle-debug-on-hidden-errors (func)
  "Toggle hidden error debugging for function FUNC."
  (interactive "a")
  (cond
   ((advice-member-p #'oni-core-reraise-error func)
    (advice-remove func #'oni-core-reraise-error)
    (message "Debug on hidden errors disabled for %s" func))
   (t
    (advice-add func :around #'oni-core-reraise-error)
    (message "Debug on hidden errors enabled for %s" func))))

;;; Native Compilation

(setq native-comp-async-report-warnings-errors 'silent)

;;; Lazy counting

(with-eval-after-load 'isearch
  (setq isearch-lazy-count t))

;;; Tree sitter

(when (treesit-available-p)
  (add-to-list 'interpreter-mode-alist '("bash" . bash-ts-mode)))

(defun oni-core-copy-guix-build-hash ()
  "Try and find the last actual hash in the compilation buffer and insert it."
  (interactive)
  (insert
   (with-current-buffer next-error-last-buffer
     (save-excursion
       (save-match-data
         (goto-char (point-max))
         (re-search-backward (rx bol (zero-or-more whitespace) "actual hash:" (one-or-more whitespace)))
         (goto-char (match-end 0))
         (buffer-substring-no-properties (point) (line-end-position)))))))

(if (boundp 'safe-local-variable-directories)
    (setq safe-local-variable-directories
          (cl-delete-if
           (lambda (d) (string-match-p (rx "/" (or "." ".." "foreign") eos) d))
           (directory-files "~/projects/" t))))

;;; Space cycling

;; The ‘-’ argument to each function makes sure that any newlines are also
;; removed along with the other whitespace.
(setq cycle-spacing-actions '((just-one-space -) (delete-all-space -) restore))

(provide 'oni-core)
;;; oni-core.el ends here