;;; ~/.emacs  -*- mode: emacs-lisp; lexical-binding: t; -*-
;; by Case Duckworth <acdw@acdw.net>
;; Bankruptcy 10: "Annoyance"

;;; Commentary:

;; This is my Emacs configuration.  There are many like it but this
;; one is mine.
;;
;; For the tenth time!

;;; Code:

(add-hook 'after-init-hook
          (lambda ()
            (load (locate-user-emacs-file "private"))))

;;; Definitions:

(defun reset-faces ()
  (dolist (face '(font-lock-regexp-face
                  font-lock-builtin-face
                  font-lock-variable-name-face
                  font-lock-preprocessor-face
                  font-lock-remove-face
                  font-lock-delimiter-face
                  font-lock-label-face
                  font-lock-operator-face
                  font-lock-property-face
                  font-lock-builtin-face
                  font-lock-number-face
                  font-lock-keyword-face
                  font-lock-set-face
                  font-lock-warning-face
                  font-lock-punctuation-face
                  font-lock-constant-face
                  font-lock-type-face
                  font-lock-function-name-face
                  font-lock-reference-face
                  font-lock-misc-punctuation-face
                  font-lock-bracket-face))
    (face-spec-set face '((t :foreground unspecified
                             :background unspecified)))))

(defun electric-pair-local-mode-disable ()
  "Disable `electric-pair-mode', locally."
  (electric-pair-local-mode -1))

(defun kill-this-buffer (&optional buffer-or-name)
  "Kill this buffer, or BUFFER-OR-NAME.
When called interactvely, the user will be prompted when passing
\\[universal-argument]."
  (interactive "P")
  (cond
   ((bufferp buffer-or-name)
    (kill-buffer buffer-or-name))
   ((null buffer-or-name)
    (kill-current-buffer))
   (:else
    (kill-buffer (read-buffer "Kill: " nil :require-match)))))

(defun define-org-capture-template (description &rest args)
  "Define an template for `org-capture-templates'.
Will not replace an existing template unless `:force' in ARGS is
non-nil. ARGS is a plist, which in addition to the additional
options `org-capture-templates' accepts (which see), also accepts
the following: `:keys', `:description', `:type', `:target', and
`:template'."
  (declare (indent 1))
  (let* ((keys (plist-get args :keys))
         (type (plist-get args :type))
         (target (plist-get args :target))
         (template (plist-get args :template))
         (force (plist-get args :force))
         (template-value
          (append
           (list description)
           (when (or type target template)
             (list (or type 'entry) target template))
           (cl-loop for i from 0 below (length args) by 2
                    unless (member (nth i args)
                                   '( :keys :description :type
                                      :target :template))
                    append (list (nth i args)
                                 (plist-get args (nth i args)))))))
    (if (seq-find (lambda (el) (equal (car el) keys))
                  org-capture-templates)
        (and force
             (setf (alist-get keys org-capture-templates nil nil #'equal)
                   template-value))
      (setf org-capture-templates
            (append org-capture-templates
                    (list (cons keys template-value)))))
    org-capture-templates))

(defun other-window-or-switch-buffer (&optional arg)
  "Switch to the other window.
If a window is the only buffer on a frame, switch buffer.  When
run with \\[universal-argument], unconditionally switch buffer."
  (interactive "P")
  (if (or arg (one-window-p))
      (switch-to-buffer (other-buffer) nil t)
    (other-window 1)))

(defun cycle-spacing@ (&optional n)
  ;; `cycle-spacing' is wildly different in 29.1 over 28.
  "Negate N argument on `cycle-spacing'.
That is, with a positive N, deletes newlines as well, leaving -N
spaces.          If N is negative, it will not delete newlines and leave
N spaces."
  (interactive "*p")
  (cycle-spacing (- n)))

(defun first-frame@set-fonts ()
  (remove-hook 'server-after-make-frame-hook
               #'first-frame@set-fonts)
  (face-spec-set 'default
                 `((t :family "Recursive Mono Casual Static"
                      :height 110)))
  (face-spec-set 'variable-pitch
                 `((t :family "Recursive Sans Casual Static"
                      :height 1.0)))
  ;; Emojis
  (cl-loop with ffl = (font-family-list)
           for font in '("Noto Emoji" "Noto Color Emoji"
                         "Segoe UI Emoji" "Apple Color Emoji"
                         "FreeSans" "FreeMono" "FreeSerif"
                         "Unifont" "Symbola")
           if (member font ffl)
           do (set-fontset-font t 'symbol font))
  ;; International fonts
  (cl-loop with ffl = (font-family-list)
           for (charset . font)
           in '((latin . "Noto Sans")
                (han . "Noto Sans CJK SC Regular")
                (kana . "Noto Sans CJK JP Regular")
                (hangul . "Noto Sans CJK KR Regular")
                (cjk-misc . "Noto Sans CJK KR Regular")
                (khmer . "Noto Sans Khmer")
                (lao . "Noto Sans Lao")
                (burmese . "Noto Sans Myanmar")
                (thai . "Noto Sans Thai")
                (ethiopic . "Noto Sans Ethiopic")
                (hebrew . "Noto Sans Hebrew")
                (arabic . "Noto Sans Arabic")
                (gujarati . "Noto Sans Gujarati")
                (devanagari . "Noto Sans Devanagari")
                (kannada . "Noto Sans Kannada")
                (malayalam . "Noto Sans Malayalam")
                (oriya . "Noto Sans Oriya")
                (sinhala . "Noto Sans Sinhala")
                (tamil . "Noto Sans Tamil")
                (telugu . "Noto Sans Telugu")
                (tibetan . "Noto Sans Tibetan"))
           if (member font ffl)
           do (set-fontset-font t charset font))
  ;; XXX: tab-bar does a weird thing, so i set it up here....
  (setopt tab-bar-show t)
  (tab-bar-mode))

(defun renz/sort-by-alpha-length (elems)
  "Sort ELEMS first alphabetically, then by length."
  (sort elems (lambda (c1 c2)
                (or (string-version-lessp c1 c2)
                    (< (length c1) (length c2))))))

(defun renz/sort-by-history (elems)
  "Sort ELEMS by minibuffer history.
Use `mct-sort-sort-by-alpha-length' if no history is available."
  (if-let ((hist (and (not (eq minibuffer-history-variable t))
                      (symbol-value minibuffer-history-variable))))
      (minibuffer--sort-by-position hist elems)
    (renz/sort-by-alpha-length elems)))

(defun renz/completion-category ()
  "Return completion category."
  (when-let ((window (active-minibuffer-window)))
    (with-current-buffer (window-buffer window)
      (completion-metadata-get
       (completion-metadata (buffer-substring-no-properties
                             (minibuffer-prompt-end)
                             (max (minibuffer-prompt-end) (point)))
                            minibuffer-completion-table
                            minibuffer-completion-predicate)
       'category))))

(defun renz/sort-multi-category (elems)
  "Sort ELEMS per completion category."
  (pcase (renz/completion-category)
    ('nil elems) ; no sorting
    ('kill-ring elems)
    ('project-file (renz/sort-by-alpha-length elems))
    (_ (renz/sort-by-history elems))))

(defvar no-tabs-modes '(emacs-lisp-mode
                        lisp-mode
                        scheme-mode
                        python-mode
                        haskell-mode)
  "Modes /not/ to indent with tabs.")

(defun indent-tabs-mode-maybe ()
  (if (apply #'derived-mode-p no-tabs-modes)
      (indent-tabs-mode -1)
    (indent-tabs-mode 1)))

(define-minor-mode truncate-lines-mode
  "Buffer-local mode to toggle `truncate-lines'."
  :lighter ""
  (setq-local truncate-lines truncate-lines-mode))

;;; Region or buffer stuff

(defun call-with-region-or-buffer (fn &rest _r)
  "Call function FN with current region or buffer.
Good to use for :around advice."
  (if (region-active-p)
      (funcall fn (region-beginning) (region-end))
    (funcall fn (point-min) (point-max))))

(defun delete-trailing-whitespace-except-current-line ()
  (save-excursion
    (delete-trailing-whitespace (point-min)
                                (line-beginning-position))
    (delete-trailing-whitespace (line-end-position)
                                (point-max))))

(defun create-missing-directories ()
  "Automatically create missing directories."
  (let ((target-dir (file-name-directory buffer-file-name)))
    (unless (file-exists-p target-dir)
      (make-directory target-dir :parents))))


(defun vc-remote-off ()
  "Turn VC off when remote."
  (when (file-remote-p (buffer-file-name))
    (setq-local vc-handled-backends nil)))

(defun +titlecase-sentence-style-dwim (&optional arg)
  "Titlecase a sentence.
With prefix ARG, toggle the value of
`titlecase-downcase-sentences' before sentence-casing."
  (interactive "P")
  (let ((titlecase-downcase-sentences (if arg (not titlecase-downcase-sentences)
                                        titlecase-downcase-sentences)))
    (titlecase-dwim 'sentence)))

(defun +titlecase-org-headings ()
  (interactive)
  (require 'org)
  (save-excursion
    (goto-char (point-min))
    ;; See also `org-map-tree'.  I'm not using that function because I want to
    ;; skip the first headline.  A better solution would be to patch
    ;; `titlecase-line' to ignore org-mode metadata (TODO cookies, tags, etc).
    (let ((level (funcall outline-level))
          (org-special-ctrl-a/e t))
      (while (and (progn (outline-next-heading)
                         (> (funcall outline-level) level))
                  (not (eobp)))
        (titlecase-region (progn (org-beginning-of-line) (point))
                          (progn (org-end-of-line) (point)))))))

(defcustom browse-url-safe-browser-functions nil
  "\"Safe\" browser functions."
  :type '(repeat-function))

(defun browse-url-browser-function-safe-p (fn)
  "Return t if FN is a \"safe\" browser function."
  (memq f (append browse-url-safe-browser-functions
                  (mapcar (lambda (i)
                            (plist-get (cdr i) :value))
                          (seq-filter (lambda (i)
                                        (eq (car i) 'function-item))
                                      (cdr (get 'browse-url-browser-function
                                                'custom-type)))))))

(put 'browse-url-browser-function 'safe-local-variable
     'browse-url-browser-function-safe-p)


;;; Packages:

(require 'package)
(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
(package-initialize)

(defun ensure-package (pkg &optional localp)
  "Esnure PKG is installed from repositories.
If LOCALP is t, add ~/src/PKG.el to `load-path'.
If LOCALP is a string, add that directory to the `load-path'."
  (cond
   ((stringp localp)
    (and (file-exists-p localp)
         (add-to-list 'load-path localp)))
   (localp
    (ensure-package pkg
                    (expand-file-name
                     (format "~/src/%s.el"
                             (symbol-name pkg)))))
   (:else
    (unless (package-installed-p pkg)
      (unless (ignore-errors (package-install pkg))
        (package-refresh-contents)
        (package-install pkg))))))

;; Install packages here. Acutal configuration is done in the Configuration
;; section.
(ensure-package 'consult)
(ensure-package 'marginalia)
(ensure-package 'visual-fill-column)
(ensure-package 'adaptive-wrap)
(ensure-package 'geiser)
(when (executable-find "csi")
  (ensure-package 'geiser-chicken))
(ensure-package 'avy)
(ensure-package 'zzz-to-char)
(ensure-package 'hungry-delete)
(ensure-package 'undohist)
(ensure-package 'jinx)
(ensure-package 'markdown-mode)
(ensure-package 'anzu)

;; Local packages
(ensure-package 'scule t)
(ensure-package 'frowny t)
(ensure-package 'hippie-completing-read t)
(ensure-package 'mode-line-bell t)
(ensure-package 'titlecase t)
(ensure-package 'jabber t)

;;; Jabber

(use-package jabber
  :load-path  "~/src/jabber.el"
  :defer t
  :bind-keymap (("C-c j" . jabber-global-keymap))
  :preface nil
  (setq-default jabber-chat-buffer-format "*%n*"
                jabber-browse-buffer-format "*%n*"
                jabber-groupchat-buffer-format "*%n*"
                jabber-muc-private-buffer-format "*%n*")
  :custom-face
  (jabber-activity-face ((t :inherit jabber-chat-prompt-foreign
                            :foreground unspecified
                            :weight normal)))
  (jabber-activity-personal-face ((t :inherit jabber-chat-prompt-local
                                     :foreground unspecified
                                     :weight bold)))
  (jabber-chat-prompt-local ((t :inherit minibuffer-prompt
                                :foreground unspecified
                                :weight normal
                                :slant italic)))
  (jabber-chat-prompt-foreign ((t :inherit warning
                                  :foreground unspecified
                                  :weight normal)))
  (jabber-chat-prompt-system ((t :inherit font-lock-doc-face
                                 :foreground unspecified)))
  (jabber-rare-time-face ((t :inherit font-lock-comment-face
                             :foreground unspecified
                             :underline nil)))
  :config
  (require 'jabber-httpupload nil t)
  (setopt jabber-auto-reconnect t
          jabber-last-read-marker "~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~"
          jabber-muc-decorate-presence-patterns
          '(("\\( enters the room ([^)]+)\\| has left the chatroom\\)$" . nil)
            ("Mode #.*" . jabber-muc-presence-dim)
            ("." . jabber-muc-presence-dim))
          jabber-activity-make-strings #'jabber-activity-make-strings-shorten
          jabber-rare-time-format
          (format " - - - - - %%H:%d %%F"
                  (let ((min (string-to-number (format-time-string "%M"))))
                    (* 5 (floor min 5))))
          jabber-muc-header-line-format '(" " jabber-muc-topic))

  (setopt jabber-groupchat-prompt-format "%n.  "
          jabber-chat-local-prompt-format "%n.  "
          jabber-chat-foreign-prompt-format "%n.  "
          jabber-muc-private-foreign-prompt-format "%g/%n.  ")

  (keymap-global-set "C-c C-SPC" #'jabber-activity-switch-to)
  (map-keymap (lambda (key command)
                (define-key jabber-global-keymap (vector (+ key #x60)) command))
              jabber-global-keymap)
  (keymap-global-set "C-x C-j" #'dired-jump)

  (add-hook 'jabber-post-connect-hooks #'jabber-enable-carbons)
  (remove-hook 'jabber-alert-muc-hooks 'jabber-muc-echo)
  (remove-hook 'jabber-alert-presence-hooks 'jabber-presence-echo)
  (add-hook 'jabber-chat-mode-hook 'visual-line-mode)
  (add-hook 'jabber-chat-mode-hook (defun jabber-no-position ()
                                     (setq-local mode-line-position nil)))

  (add-hook 'jabber-alert-muc-hooks
            (defun jabber@highlight-acdw (&optional _ _ buf _ _)
              (when buf
                (with-current-buffer buf
                  (let ((regexp (rx word-boundary
                                    "acdw" ; maybe get from the config?
                                    word-boundary)))
                    (hi-lock-unface-buffer regexp)
                    (highlight-regexp regexp 'jabber-chat-prompt-local))))))

  (when (fboundp 'jabber-chat-update-focus)
    (add-hook 'window-configuration-change-hook #'jabber-chat-update-focus)))


;;; Configuration:

(setopt custom-file (locate-user-emacs-file "custom.el"))
(load custom-file :noerror)

;;; General keybinding changes

(keymap-global-set "M-o" #'other-window-or-switch-buffer)
(keymap-global-set "M-SPC" #'cycle-spacing@)
(keymap-global-set "M-u" #'universal-argument)
(keymap-set universal-argument-map "M-u" #'universal-argument-more)

;;; Theme

(if (daemonp)
    (add-hook 'server-after-make-frame-hook #'first-frame@set-fonts)
  (run-with-idle-timer 1 nil #'first-frame@set-fonts))

(tool-bar-mode -1)

(setopt modus-themes2-bold-constructs nil
        modus-themes-italic-constructs t
        modus-themes-variable-pitch-ui t)

(add-hook 'modus-themes-after-load-theme-hook #'reset-faces)

(load-theme 'modus-vivendi :no-confirm :no-enable)
(load-theme 'modus-operandi :no-confirm)

(add-hook 'text-mode-hook #'visual-line-mode)
(add-hook 'prog-mode-hook #'auto-fill-mode)
(add-hook 'prog-mode-hook #'display-fill-column-indicator-mode)

;;; Mode line

(defvar mode-line-position
  '(""
    (:propertize
     (""
      (:eval (if line-number-mode "%3l" ""))
      (:eval (if column-number-mode
                 (if column-number-indicator-zero-based
                     "/%2c"
                   "/%2C")
               "")))
     display (min-width (3.0)))
    (:propertize (" [" (-3 "%p") "] ")
                 display (min-width (6.0)))))

(setopt mode-line-format
        '(("%e"
           mode-line-front-space
           (:propertize (""
                         mode-line-client
                         mode-line-modified
                         mode-line-remote)
                        display (min-width (3.0)))
           " "
           mode-line-buffer-identification
           (vc-mode (" (" (:eval (string-trim vc-mode)) ")"))
           " "
           (mode-line-position mode-line-position)
           mode-line-modes
           mode-line-misc-info
           mode-line-end-spaces)))

;; Remove modes from mode-line
(dolist (minor-mode '(frowny-mode
                      whitespace-mode
                      hungry-delete-mode))
  (setf (alist-get minor-mode minor-mode-alist) (list ""))
  (add-hook (intern (format "%s-hook" minor-mode))
            (lambda ()
              (setf (alist-get minor-mode minor-mode-alist) (list "")))))

;;; Completion & minibuffer

(fido-vertical-mode)
(minibuffer-depth-indicate-mode)

(setopt completion-auto-help (not icomplete-mode)
        completion-auto-select 'second-tab
        completions-header-format nil
        completions-max-height 12
        completions-format 'one-column
        completion-styles '(basic partial-completion emacs22 flex)
        completion-ignore-case t
        read-buffer-completion-ignore-case t
        read-file-name-completion-ignore-case t
        completions-detailed t
        enable-recursive-minibuffers t
        file-name-shadow-properties '(invisible t intangible t)
        minibuffer-eldef-shorten-default t
        minibuffer-prompt-properties '( read-only t
                                        cursor-intangible t
                                        face minibuffer-prompt)
        window-resize-pixelwise t
        frame-resize-pixelwise t)

(add-hook 'completion-list-mode-hook #'truncate-lines-mode)
(add-hook 'minibuffer-setup-hook #'truncate-lines-mode)

;; Up/down when completing in the minibuffer
;; (define-key minibuffer-local-map (kbd "C-p") #'minibuffer-previous-completion)
;; (define-key minibuffer-local-map (kbd "C-n") #'minibuffer-next-completion)

;; Up/down when competing in a normal buffer
;; (define-key completion-in-region-mode-map (kbd "C-p") #'minibuffer-previous-completion)
;; (define-key completion-in-region-mode-map (kbd "C-n") #'minibuffer-next-completion)

(setopt completions-sort #'renz/sort-multi-category)

(setopt tab-always-indent 'complete)

(file-name-shadow-mode)
(minibuffer-electric-default-mode)

(scroll-bar-mode -1)
(menu-bar-mode -1)

(add-hook 'prog-mode-hook #'indent-tabs-mode-maybe)

(setopt electric-pair-skip-whitespace 'chomp)
(electric-pair-mode)

(setopt sh-basic-offset tab-width)

(keymap-set emacs-lisp-mode-map "C-c C-c" #'eval-defun)
(keymap-set emacs-lisp-mode-map "C-c C-k" #'eval-buffer)
(keymap-set lisp-interaction-mode-map "C-c C-c" #'eval-defun)
(keymap-set lisp-interaction-mode-map "C-c C-k" #'eval-buffer)

(advice-add 'indent-region :around #'call-with-region-or-buffer)
(advice-add 'tabify :around #'call-with-region-or-buffer)
(advice-add 'untabify :around #'call-with-region-or-buffer)

(with-eval-after-load 'scheme
  (keymap-unset scheme-mode-map "M-o" t)
  ;; Comparse "keywords" --- CHICKEN (http://wiki.call-cc.org/eggref/5/comparse)
  (put 'sequence* 'scheme-indent-function 1)
  (put 'satisfies 'scheme-indent-function 1)
  (add-hook 'scheme-mode-hook #'geiser-mode))
(with-eval-after-load 'geiser-mode
  (keymap-set geiser-mode-map "C-c C-k" #'geiser-eval-buffer-and-go)
  (keymap-unset geiser-mode-map "C-." t))


(with-eval-after-load 'visual-fill-column
  (setopt visual-fill-column-center-text t
          visual-fill-column-width (+ fill-column 2))
  (advice-add 'text-scale-adjust :after #'visual-fill-column-adjust))
(add-hook 'visual-line-mode-hook #'visual-fill-column-mode)
(add-hook 'visual-line-mode-hook #'adaptive-wrap-prefix-mode)

(setopt major-mode
        (lambda () ; guess major mode from buffer name
          (unless buffer-file-name
            (let ((buffer-file-name (buffer-name)))
              (set-auto-mode)))))

;; Dialogs
(unless (boundp 'use-short-answers)
  (fset 'yes-or-no-p 'y-or-n-p))

(setopt read-answer-short t
        use-dialog-box nil
        use-file-dialog nil
        use-short-answers t)

(require 'savehist)
(setopt history-length 1024
        history-delete-duplicates t
        ;; savehist-file (etc/ "savehist.el")
        savehist-save-minibuffer-history t
        savehist-autosave-interval 30)
(savehist-mode)

;; Killing and yanking
(setopt kill-do-not-save-duplicates t
        kill-read-only-ok t
        ;; XXX: This setting causes an error message the first time it's
        ;; called: "Selection owner couldn't convert: TIMESTAMP".          I have
        ;; absolutely no idea why I get this error, but it's generated in
        ;; `x_get_foreign_selection'.  I also can't inhibit the message or
        ;; do anything else with it, so for now, I'll just live with the
        ;; message.
        save-interprogram-paste-before-kill t
        yank-pop-change-selection t)
(delete-selection-mode)

;; Notifying the user
(setopt echo-keystrokes 0.01
        ring-bell-function #'ignore)

;; Point and mark
(setopt set-mark-command-repeat-pop t)

;; The system
(setopt read-process-output-max (* 10 1024 1024))

;; Startup
(setopt inhibit-startup-screen t
        initial-buffer-choice t
        initial-scratch-message nil)

(define-advice startup-echo-area-message (:override ())
  (if (get-buffer "*Warnings*")
      ";_;"
    "^_^"))

;; Text editing
(setopt fill-column 80
        sentence-end-double-space nil
        tab-width 8
        tab-always-indent 'complete)
(global-so-long-mode)

(setopt show-paren-delay 0.01
        show-paren-style 'parenthesis
        show-paren-when-point-in-periphery t
        show-paren-when-point-inside-paren t)
(show-paren-mode)


;; Encodings
(set-language-environment "UTF-8")
(setopt buffer-file-coding-system 'utf-8-unix
        coding-system-for-read 'utf-8-unix
        coding-system-for-write 'utf-8-unix
        default-process-coding-system '(utf-8-unix . utf-8-unix)
        locale-coding-system 'utf-8-unix)
(set-charset-priority 'unicode)
(prefer-coding-system 'utf-8-unix)
(set-default-coding-systems 'utf-8-unix)
(set-terminal-coding-system 'utf-8-unix)
(set-keyboard-coding-system 'utf-8-unix)
(pcase system-type
  ((or 'ms-dos 'windows-nt)
   (set-clipboard-coding-system 'utf-16-le)
   (set-selection-coding-system 'utf-16-le))
  (_
   (set-selection-coding-system 'utf-8)
   (set-clipboard-coding-system 'utf-8)))


;; Files
(setopt auto-revert-verbose nil
        global-auto-revert-non-file-buffers t
        create-lockfiles nil
        find-file-visit-truename t
        mode-require-final-newline t
        view-read-only t
        save-silently t)
(global-auto-revert-mode)

(setopt auto-save-default nil
        auto-save-interval 1
        auto-save-no-message t
        auto-save-timeout 1
        auto-save-visited-interval 1
        remote-file-name-inhibit-auto-save-visited t)
(add-to-list 'auto-save-file-name-transforms
             `(".*" ,(locate-user-emacs-file "auto-save/") t))
(auto-save-visited-mode)

(setopt backup-by-copying t
        version-control t
        kept-new-versions 8
        kept-old-versions 8
        delete-old-versions t)
(setq-default backup-directory-alist
              `(("^/dev/shm" . nil)
                ("^/tmp" . nil)
                (,(getenv "XDG_RUNTIME_DIR") . nil)
                ("." . ,(locate-user-emacs-file "backup"))))

(require 'recentf)
(setopt
 recentf-max-menu-items 500
 recentf-max-saved-items nil ; Save the whole list
 recentf-auto-cleanup 'mode
 recentf-case-fold-search t)
;; (add-to-list 'recentf-exclude etc/)
(add-to-list 'recentf-exclude "-autoloads.el\\'")
(add-hook 'buffer-list-update-hook #'recentf-track-opened-file)
(add-hook 'after-save-hook #'recentf-save-list)
(recentf-mode)

(require 'saveplace)
(setopt
 save-place-forget-unreadable-files (eq system-type
                                        'gnu/linux))
(save-place-mode)

(require 'uniquify)
(setq uniquify-after-kill-buffer-p t
      uniquify-buffer-name-style 'forward
      uniquify-ignore-buffers-re "^\\*"
      uniquify-separator path-separator)

(setq-local vc-follow-symlinks t
            vc-make-backup-files t)

;; Whitespace
(require 'whitespace)
(setopt whitespace-style
        '(face trailing tabs tab-mark))
(global-whitespace-mode)
(add-hook 'before-save-hook #'delete-trailing-whitespace-except-current-line)

;; Native compilation
(setopt native-comp-async-report-warnings-errors 'silent
        native-comp-deferred-compilation t
        native-compile-target-directory
        (locate-user-emacs-file "eln"))
(when (boundp 'native-comp-eln-load-path)
  (add-to-list 'native-comp-eln-load-path native-compile-target-directory))
(when (fboundp 'startup-redirect-eln-cache)
  (startup-redirect-eln-cache native-compile-target-directory))

(global-goto-address-mode)

;; Winner
(winner-mode)

;;; Hooks
(add-hook 'after-save-hook #'executable-make-buffer-file-executable-if-script-p)
(add-hook 'find-file-not-found-functions #'create-missing-directories)
(add-hook 'find-file-hook #'vc-remote-off)
(add-hook 'dired-mode-hook #'hl-line-mode)
(add-hook 'org-agenda-mode-hook #'hl-line-mode)

;;; Tab bar

(defun tab-bar-end-space ()
  `((end menu-item " " ignore)))

(add-to-list 'tab-bar-format 'tab-bar-format-align-right :append)
(add-to-list 'tab-bar-format 'tab-bar-format-global :append)
(add-to-list 'tab-bar-format 'tab-bar-end-space :append)
;;(setopt tab-bar-show t)
;;(tab-bar-mode) ; done after setting fonts

;;; Org mode

(keymap-global-set "C-c a" #'org-agenda)
(keymap-global-set "C-c c" #'org-capture)
(setopt org-clock-clocked-in-display 'frame-title
        org-clock-frame-title-format
        '("%b" " - " (t org-mode-line-string))
        org-tags-column (- (- fill-column 3))
        org-log-into-drawer t
        org-clock-into-drawer t)

;;; Spelling

(defun list-of-strings-p (x)
  "Is X a list of strings?"
  (and x
       (listp x)
       (cl-every #'stringp x)))

(put 'ispell-local-words 'safe-local-variable
     'list-of-strings-p)

(add-hook 'text-mode-hook #'jinx-mode)
(with-eval-after-load 'jinx
  (keymap-set jinx-mode-map "M-$" #'jinx-correct)
  (keymap-set jinx-mode-map "C-M-$" #'jinx-languages))

;;; org-return-dwim
;; https://github.com/alphapapa/unpackaged.el,
;; http://kitchingroup.cheme.cmu.edu/blog/2017/04/09/A-better-return-in-org-mode/
(defun org-return-dwim (&optional arg)
  "A helpful replacement for `org-return'.
When called interactively with \\[universal-argument], call `org-return'
itself.  Other values of ARG will call `newline' with that ARG."
  (interactive "P")
  ;; Auto-fill if enabled
  (when auto-fill-function
    (dolist (func (ensure-list auto-fill-function))
      (funcall func)))
  (cl-letf* ((el (org-element-at-point))
             ((symbol-function 'el-child-of)
              (lambda (&rest types)
                (org-element-lineage el types t))))
    (cond                                ; Figure out what we're going to do
     (arg                                ; Handle prefix ARG
      (pcase arg
        ('(4) (org-return t nil t))
        (_ (newline arg t))))
     ((and org-return-follows-link      ; Open a link
           (el-child-of 'link))
      (org-open-at-point-global))
     ((org-at-heading-p)                ; Open a paragraph after a heading
      (let ((heading-start (org-entry-beginning-position)))
        (goto-char (org-entry-end-position))
        (cond ((and (org-at-heading-p)      ; Entry is only a heading
                    (= heading-start (org-entry-beginning-position)))
               (end-of-line)
               (newline 2))
              (:else                    ; Entry is more than a heading
               (forward-line -1)
               (end-of-line)
               (when (org-at-heading-p)
                 ;; Open a paragraph
                 (forward-line)
                 (newline)
                 (forward-line -1))
               (while (not (looking-back "\\(?:[[:blank:]]?\n\\)\\{3\\}" nil))
                 (newline))
               (forward-line -1)))))
     ((org-at-item-checkbox-p)          ; Insert a new checkbox item
      (end-of-line)
      (org-insert-todo-heading nil))
     ((org-in-item-p)                   ; Insert a new list item
      (let* ((context (org-element-context el))
             (first-item-p (eq 'plain-list (car context)))
             (itemp (eq 'item (car context)))
             (emptyp (or
                      ;; This (regular) list item is empty
                      (eq (org-element-property :contents-begin context)
                          (org-element-property :contents-end context))
                      ;; This (definition) list item is empty
                      (looking-at " *::")))
             (item-child-p (el-child-of 'item)))
        (cond ((and itemp emptyp)
               ;; This test has to be here even though it's the same as the
               ;; :else clause, because an item that's empty will also satisfy
               ;; the next clause.
               (delete-region (line-beginning-position) (line-end-position))
               (newline))
              ((or first-item-p
                   (and itemp (not emptyp))
                   item-child-p)
               (org-end-of-item)
               (org-insert-item))
              (:else
               (delete-region (line-beginning-position) (line-end-position))
               (newline)))))
     ((and (fboundp 'org-inlinetask-in-task-p) ; Just return for inline tasks
           (org-inlinetask-in-task-p))
      (org-return))
     ((org-at-table-p)                  ; Insert a new table row
      (cond ((save-excursion            ; Empty row: end the table
               (beginning-of-line)
               (cl-loop with end = (line-end-position)
                        for cell = (org-element-table-cell-parser)
                        always (eq (org-element-property :contents-begin cell)
                                   (org-element-property :contents-end cell))
                        while (re-search-forward "|" end t)))
             (delete-region (line-beginning-position) (line-end-position))
             (org-return))
            (:else                      ; Non-empty row
             (org-return))))
     (:else                             ; Something else
      (org-return)))))

(defun org-table-copy-down|org-return-dwim (&optional n)
  "Call `org-table-copy-down' or `+org-return' depending on context."
  (interactive "P")
  (if (org-table-check-inside-data-field 'noerror)
      (org-table-copy-down (or n 1))
    (org-return-dwim n)))

(with-eval-after-load 'org
  (keymap-set org-mode-map "RET" #'org-return-dwim)
  (keymap-set org-mode-map "S-RET" #'org-table-copy-down|org-return-dwim))

;;; Copy rich text to the keyboard

(defcustom clipboard-html-copy-program
  (if (or (equal "wayland"
                 (getenv "XDG_SESSION_TYPE"))
          (getenv "WAYLAND_DISPLAY"))
      '("wl-copy" "-t" "text/html")
    '("xclip" "-t" "text/html" "-selection" "clipboard"))
  "Program to use to copy HTML to the clipboard.
Should be a list of strings---the command line.
Defaults to 'wl-copy' on wayland and 'xclip' on Xorg."
  :type '(repeat string))

;; Thanks to Oleh Krehel:
;; https://emacs.stackexchange.com/questions/54292/copy-results-of-org-export-directly-to-clipboard
;; So.  Emacs can't do this itself because it doesn't support sending clipboard
;; or selection contents as text/html.  We have to use xclip instead.
;; (defun org-to-html-to-clipboard (&rest org-export-args)
;;   "Export current org buffer to HTML, then copy it to the clipboard.
;; ORG-EXPORT-ARGS are passed to `org-export-to-file'."
;;   (let ((f (make-temp-file "org-html-export")))
;;     (apply #'org-export-to-file 'html f org-export-args)
;;     (start-process "xclip" " *xclip*"
;;                    "xclip" "-verbose" "-i" f
;;                    "-t" "text/html" "-selection" "clipboard")
;;     (message "HTML pasted to clipboard.")))

(defun org-export-html-copy (&rest org-export-args)
  "Export current org buffer to HTML and copy to clipboard as rich text.
ORG-EXPORT-ARGS are passed to `org-export-to-buffer'."
  (let ((buf (generate-new-buffer "*org-html-clipboard*" t)))
    (apply #'org-export-to-buffer 'html buf org-export-args)
    (with-current-buffer buf
      (apply #'call-process-region
             (point-min)
             (point-max)
             (car clipboard-html-copy-program)
             nil                        ; don't delete text
             nil                        ; discard the output
             nil                        ; don't redisplay
             (cdr clipboard-html-copy-program))
      (kill-buffer-and-window))
    (message "HTML copied to clipboard.")))

;; Wayland version.. TODO: make it work for both
;; (defun org-to-html-to-clipboard (&rest org-export-args)
  ;; "Export current org buffer to HTML, then copy it to the clipboard.
;; ORG-EXPORT-ARGS are passed to `org-export-to-file'."
  ;; (let ((buf (generate-new-buffer "*org-html-clipboard*" t)))
    ;; (apply #'org-export-to-buffer 'html buf org-export-args)
    ;; (with-current-buffer buf
      ;; (call-process-region (point-min) (point-max)
                           ;; "wl-copy" nil nil nil
                           ;; "-t" "text/html")
      ;; (kill-buffer-and-window))
    ;; (message "HTML copied to clipboard.")))

(defun org-subtree-to-html-to-clipboard ()
  "Export current subtree to HTML."
  (interactive)
  (org-export-html-copy nil :subtree))

(undohist-initialize)

(require 'hungry-delete)
(setopt hungry-delete-chars-to-skip " \t"
        hungry-delete-skip-regexp (format "[%s]" hungry-delete-chars-to-skip)
        hungry-delete-join-reluctantly nil)
(add-to-list 'hungry-delete-except-modes 'eshell-mode)
(add-to-list 'hungry-delete-except-modes 'nim-mode)
(add-to-list 'hungry-delete-except-modes 'python-mode)
(global-hungry-delete-mode)

(setopt avy-background t
        avy-keys (string-to-list "asdfghjklqwertyuiopzxcvbnm"))
(keymap-global-set "M-j" #'avy-goto-char-timer)
(keymap-set isearch-mode-map "M-j" #'avy-isearch)
(keymap-global-set "M-z" #'zzz-to-char)

(marginalia-mode)

(keymap-global-set "C-x b" #'consult-buffer)
(keymap-global-set "C-x 4 b" #'consult-buffer-other-window)
(keymap-global-set "C-x 5 b" #'consult-buffer-other-frame)
(keymap-global-set "C-x r b" #'consult-bookmark)
(keymap-global-set "M-y" #'consult-yank-pop)
(keymap-global-set "M-g g" #'consult-goto-line)
(keymap-global-set "M-g M-g" #'consult-goto-line)
(keymap-global-set "M-g o" #'consult-outline)
(keymap-global-set "M-g m" #'consult-mark)
(keymap-global-set "M-g i" #'consult-imenu)
(keymap-global-set "M-s d" #'consult-find)
(keymap-global-set "M-s D" #'consult-locate)
(keymap-global-set "M-s g" #'consult-grep)
(keymap-global-set "M-s G" #'consult-git-grep)
(keymap-global-set "M-s r" #'consult-ripgrep)
(keymap-global-set "M-s l" #'consult-line)
(keymap-global-set "M-s k" #'consult-keep-lines)
(keymap-global-set "M-s u" #'consult-focus-lines)

(keymap-global-set "M-s e" #'consult-isearch-history)
(keymap-set isearch-mode-map "M-e" #'consult-isearch-history)
(keymap-set isearch-mode-map "M-s e" #'consult-isearch-history)
(keymap-set isearch-mode-map "M-s l" #'consult-line)

(keymap-set minibuffer-local-map "M-n" #'consult-history)
(keymap-set minibuffer-local-map "M-p" #'consult-history)

(setopt completion-in-region-function #'consult-completion-in-region
        xref-show-xrefs-function #'consult-xref
        xref-show-definitions-function #'consult-xref)

(setopt initial-scratch-message ";;; Emacs!\n\n")

(keymap-global-set "C-x C-b" #'ibuffer)
(add-hook 'ibuffer-hook #'hl-line-mode)

(require 'scule)
(keymap-global-set "M-c" scule-map)
(autoload 'titlecase-dwim "titlecase" nil t)
(keymap-set scule-map "M-t" #'titlecase-dwim)

;; Use M-u for prefix keys
(keymap-global-set "M-u" #'universal-argument)
(keymap-set universal-argument-map "M-u" #'universal-argument-more)

(autoload 'frowny-mode "frowny" nil t)
(add-hook 'jabber-chat-mode-hook #'frowny-mode)
(add-hook 'jabber-chat-mode-hook #'electric-pair-local-mode-disable)

(autoload 'hippie-completing-read "hippie-completing-read" nil t)
(keymap-global-set "M-/" #'hippie-completing-read)

(setopt mode-line-bell-flash-time 0.25)
(autoload 'mode-line-bell-mode "mode-line-bell" nil t)
(mode-line-bell-mode)

(keymap-global-set "C-x C-k" #'kill-this-buffer)

(require 'anzu)
(global-anzu-mode)
(setopt search-default-mode t
        anzu-mode-lighter ""
        anzu-deactivate-region t)

(global-set-key [remap query-replace] #'anzu-query-replace-regexp)
(global-set-key [remap query-replace-regexp] #'anzu-query-replace)
(define-key isearch-mode-map [remap isearch-query-replace]
            #'anzu-isearch-query-replace-regexp)
(define-key isearch-mode-map [remap isearch-query-replace-regexp]
            #'anzu-isearch-query-replace)