#+TITLE: Emacs Configuration
#+PROPERTY: header-args :tangle init.el
#+auto_tangle: t
#+OPTIONS: num:nil toc:nil

* Table of contents :TOC:
- [[#setting-up-packages][Setting up Packages]]
  - [[#setup-for-guixsd-machines][Setup for GuixSD machines]]
  - [[#define-and-install-packages][Define and install packages]]
- [[#ui-settings][UI Settings]]
  - [[#basic-ui][Basic UI]]
  - [[#dashboard][Dashboard]]
  - [[#theme--modeline][Theme & modeline]]
  - [[#ivy][Ivy]]
  - [[#helpful][Helpful]]
- [[#dired][Dired]]
  - [[#keys][Keys]]
  - [[#all-the-iconsel][All-the-icons.el]]
- [[#terminals][Terminals]]
  - [[#vterm][Vterm]]
  - [[#eshell][Eshell]]
- [[#custom][Custom]]
  - [[#chatgpt][ChatGPT]]
  - [[#random-functions][Random functions]]
  - [[#key-bindings][Key-bindings]]
- [[#org-mode-configuration][Org-mode Configuration]]
  - [[#org-make-toc][org-make-toc]]
  - [[#themes][Themes]]
  - [[#settings][Settings]]
  - [[#babel][Babel]]
- [[#markdown][Markdown]]
  - [[#theme][Theme]]
  - [[#settings-1][Settings]]
- [[#programming][Programming]]
  - [[#essentials][Essentials]]
  - [[#emacs-lisp][Emacs lisp]]
  - [[#lsp-mode][LSP-Mode]]
  - [[#python][Python]]
  - [[#json][JSON]]
  - [[#javascript][Javascript]]
- [[#elfeed][Elfeed]]
  - [[#feeds][Feeds]]
  - [[#settings-2][Settings]]
- [[#pdf][PDF]]
- [[#telega][Telega]]
- [[#mu4e--email-configuration][mu4e | Email Configuration]]
- [[#exwm][EXWM]]

* Setting up Packages
** Setup for GuixSD machines
We check the ~$HOSTNAME~, if it's one of my devices running GuixSD.
we use ~guix-emacs-autoload-packages~ to load emacs packages installed using guix if ~t~
+ If you are running GuixSD, replace the following hostnames ~fsociety~ or ~heisenberg~ with your own ~$HOSTNAME~
#+begin_src emacs-lisp
  ;; When guix t, load emacs packages
  (when (require 'guix t)
    (add-to-list 'load-path "~/.guix-profile/share/emacs/site-lisp")
    (guix-emacs-autoload-packages))

  (with-eval-after-load 'geiser-guile
    (add-to-list 'geiser-guile-load-path "~/dotfiles/.config/guix"))

  ;; Personal Information
  (setq user-full-name "Thanos Apollo")
  (setq user-mail-address "public@thanosapollo.com")
  (setq copyright-names-regexp
	(format "%s <%s>" user-full-name user-mail-address))
#+end_src
** Define and install packages
*** List of required packages
Request the following packages:
#+begin_src emacs-lisp
  (defconst my-package-list '(org-snooze
			      all-the-icons
			      all-the-icons-dired
			      all-the-icons-ivy-rich
			      dap-mode
			      toc-org
			      general
			      doom-themes
			      doom-modeline
			      counsel
			      which-key
			      ivy
			      ivy-rich
			      helpful
			      org
			      org-modern
			      visual-fill-column
			      rainbow-delimiters
			      flycheck
			      lsp-mode
			      lsp-ui
			      json-mode
			      rjsx-mode
			      typescript-mode
			      python-mode
			      pyvenv
			      company
			      company-box
			      magit
			      elfeed
			      elfeed-goodies
			      paredit
			      corfu
			      monkeytype
			      sudo-edit
			      exwm
			      exwm-mff
			      exwm-firefox-core
			      consult
			      alsamixer
			      simple-httpd
			      circe
			      eshell-syntax-highlighting
			      pdf-tools
			      org-superstar
			      mastodon
			      dashboard
			      org-auto-tangle))
#+end_src
*** Installation & activation
Set our ~package-archives~, and install our packages
#+begin_src emacs-lisp
(setq package-archives '(("melpa" . "https://melpa.org/packages/")
			 ("org" . "https://orgmode.org/elpa/")
			 ("elpa" . "https://elpa.gnu.org/packages/")))
(package-initialize)
(unless package-archive-contents
  (package-refresh-contents))

(defvar my-missing-packages '()
  "List populated at each startup.
Contains the list of packages that need to be installed.")

(dolist (p my-package-list)
  (when (not (package-installed-p p))
    (add-to-list 'my-missing-packages p)))

(when my-missing-packages
  (message "Emacs is now refreshing its package database...")
  (package-refresh-contents)
  ;; Install the missing packages
  (dolist (p my-missing-packages)
    (message "Installing `%s' .." p)
    (package-install p))
  (setq my-missing-packages '()))

(unless (package-installed-p 'use-package)
(package-install 'use-package))  
#+end_src

* UI Settings
** Basic UI
Fonts and basic appearance settings
#+begin_src emacs-lisp
(setq inhibit-startup-message nil)
;; Transparency
(set-frame-parameter (selected-frame) 'alpha '(90 90))
(add-to-list 'default-frame-alist '(alpha 90 90))

(add-hook 'dired-mode-hook 'all-the-icons-dired-mode)

(scroll-bar-mode -1)
(tool-bar-mode -1)
(tooltip-mode -1)
(set-fringe-mode 10)
(menu-bar-mode -1)
(blink-cursor-mode -1)
(menu-bar--visual-line-mode-enable)

(setq visible-bell t)

(column-number-mode)
(global-display-line-numbers-mode 0)
(menu-bar--display-line-numbers-mode-relative)
;;Disable line numbers for some modes
(dolist (mode '(pdf-view-mode-hook
		org-mode-hook
		term-mode-hook
		shell-mode-hook
		eshell-mode-hook
		vterm-mode-hook
		elfeed))
  (add-hook mode (lambda () (display-line-numbers-mode 0))))

(defvar apollo/default-font-size 140)

(set-face-attribute 'default nil
		    :font "JetBrains Mono"
		    :height apollo/default-font-size)

(set-face-attribute 'fixed-pitch nil
		    :font "JetBrains Mono"
		    :height apollo/default-font-size)

(set-face-attribute 'variable-pitch nil
		    :font "JetBrains Mono"
		    :height apollo/default-font-size
		    :weight 'regular)

#+end_src
** Dashboard
#+begin_src emacs-lisp
  (require 'dashboard)
  (require 'all-the-icons)

  (dashboard-setup-startup-hook)
  (setq dashboard-items '((recents  . 5)
			  (bookmarks . 5)))
			  
  (setq initial-buffer-choice (lambda () (get-buffer-create "*dashboard*"))
	dashboard-item-names '(("Recent Files:" . "Recent Files:")
			       ("Bookmarks:" . "Study:")))
  ;; Set the banner
  (setq dashboard-startup-banner "~/dotfiles/pictures/medicine/plague-doctor-s.png")
  ;; Set the title
  (setq dashboard-banner-logo-title "Is that a flying flower?")
  ;; (setq dashboard-init-info "Bring me your sick and wounded!")

  (setq dashboard-set-init-info t
	dashboard-center-content t
	dashboard-set-navigator t
	dashboard-set-heading-icons t
	dashboard-set-file-icons t
	dashboard-show-shortcuts nil
	dashboard-set-footer t
	dashboard-footer-messages '("Welcome to the Church Of Emacs")
	dashboard-footer-icon (all-the-icons-octicon "broadcast"
						     :height 1.15
						     :v-adjust -0.05
						     :face 'font-lock-keyword-face))
#+end_src
** Theme & modeline
#+begin_src emacs-lisp
(load-theme 'doom-ayu-dark t)
(doom-modeline-mode 1)

(setq doom-modeline-height 35)
#+end_src
** Ivy
#+begin_src emacs-lisp
  (use-package ivy
    :diminish
    :bind (("C-s" . swiper)
	   :map ivy-minibuffer-map
	   ("TAB" . ivy-alt-done)
	   ("C-l" . ivy-alt-done)
	   ("C-j" . ivy-next-line)
	   ("C-k" . ivy-previous-line)
	   :map ivy-switch-buffer-map
	   ("C-k" . ivy-previous-line)
	   ("C-l" . ivy-done)
	   ("C-d" . ivy-switch-buffer-kill)
	   :map ivy-reverse-i-search-map
	   ("C-k" . ivy-previous-line)
	   ("C-d" . ivy-reverse-i-search-kill))
    :config
    (ivy-mode 1)
    (setq ivy-use-selectable-prompt t))

  (ivy-rich-mode 1)
  (all-the-icons-ivy-rich-mode 1)  
#+end_src
** Helpful
#+begin_src emacs-lisp
(use-package helpful
  :custom
  (counsel-describe-function-function #'helpful-callable)
  (counsel-describe-variable-function #'helpful-variable)
  :bind
  ([remap describe-function] . counsel-describe-function)
  ([remap describe-command] . helpful-command)
  ([remap describe-variable] . counsel-describe-variable)
  ([remap describe-key] . helpful-key))
#+end_src
* Dired
** Keys
#+begin_src emacs-lisp
(define-key dired-mode-map "b" 'dired-up-directory)
#+end_src
** All-the-icons.el
#+begin_src emacs-lisp
;;; all-the-icons-dired.el --- Shows icons for each file in dired mode  -*- lexical-binding: t; -*-

;;; Code:

(require 'cl-lib)
(require 'dired)
(require 'all-the-icons)

(defface all-the-icons-dired-dir-face
  '((((background dark)) :foreground "white")
    (((background light)) :foreground "black"))
  "Face for the directory icon"
  :group 'all-the-icons-faces)

(defcustom all-the-icons-dired-v-adjust 0.01
  "The default vertical adjustment of the icon in the dired buffer."
  :group 'all-the-icons
  :type 'number)

(defvar all-the-icons-dired-mode)

(defun all-the-icons-dired--add-overlay (pos string)
  "Add overlay to display STRING at POS."
  (let ((ov (make-overlay (1- pos) pos)))
    (overlay-put ov 'all-the-icons-dired-overlay t)
    (overlay-put ov 'after-string string)))

(defun all-the-icons-dired--overlays-in (beg end)
  "Get all all-the-icons-dired overlays between BEG to END."
  (cl-remove-if-not
   (lambda (ov)
     (overlay-get ov 'all-the-icons-dired-overlay))
   (overlays-in beg end)))

(defun all-the-icons-dired--overlays-at (pos)
  "Get all-the-icons-dired overlays at POS."
  (apply #'all-the-icons-dired--overlays-in `(,pos ,pos)))

(defun all-the-icons-dired--remove-all-overlays ()
  "Remove all `all-the-icons-dired' overlays."
  (save-restriction
    (widen)
    (mapc #'delete-overlay
          (all-the-icons-dired--overlays-in (point-min) (point-max)))))

(defun all-the-icons-dired--refresh ()
  "Display the icons of files in a dired buffer."
  (all-the-icons-dired--remove-all-overlays)
  (save-excursion
    (goto-char (point-min))
    (while (not (eobp))
      (when (dired-move-to-filename nil)
        (let ((file (dired-get-filename 'relative 'noerror)))
          (when file
            (let ((icon (if (file-directory-p file)
                            (all-the-icons-icon-for-dir file
                                                        :face 'all-the-icons-dired-dir-face
                                                        :v-adjust all-the-icons-dired-v-adjust)
                          (all-the-icons-icon-for-file file :v-adjust all-the-icons-dired-v-adjust))))
              (if (member file '("." ".."))
                  (all-the-icons-dired--add-overlay (point) "  \t")
                (all-the-icons-dired--add-overlay (point) (concat icon "\t")))))))
      (forward-line 1))))

(defun all-the-icons-dired--refresh-advice (fn &rest args)
  "Advice function for FN with ARGS."
  (apply fn args)
  (when all-the-icons-dired-mode
    (all-the-icons-dired--refresh)))

(defun all-the-icons-dired--setup ()
  "Setup `all-the-icons-dired'."
  (when (derived-mode-p 'dired-mode)
    (setq-local tab-width 1)
    (advice-add 'dired-readin :around #'all-the-icons-dired--refresh-advice)
    (advice-add 'dired-revert :around #'all-the-icons-dired--refresh-advice)
    (advice-add 'dired-internal-do-deletions :around #'all-the-icons-dired--refresh-advice)
    (advice-add 'dired-insert-subdir :around #'all-the-icons-dired--refresh-advice)
    (advice-add 'dired-do-kill-lines :around #'all-the-icons-dired--refresh-advice)
    (with-eval-after-load 'dired-narrow
      (advice-add 'dired-narrow--internal :around #'all-the-icons-dired--refresh-advice))
    (all-the-icons-dired--refresh)))

(defun all-the-icons-dired--teardown ()
  "Functions used as advice when redisplaying buffer."
  (advice-remove 'dired-readin #'all-the-icons-dired--refresh-advice)
  (advice-remove 'dired-revert #'all-the-icons-dired--refresh-advice)
  (advice-remove 'dired-internal-do-deletions #'all-the-icons-dired--refresh-advice)
  (advice-remove 'dired-narrow--internal #'all-the-icons-dired--refresh-advice)
  (advice-remove 'dired-insert-subdir #'all-the-icons-dired--refresh-advice)
  (advice-remove 'dired-do-kill-lines #'all-the-icons-dired--refresh-advice)
  (all-the-icons-dired--remove-all-overlays))

;;;###autoload
(define-minor-mode all-the-icons-dired-mode
  "Display all-the-icons icon for each files in a dired buffer."
  :lighter " all-the-icons-dired-mode"
  (when (and (derived-mode-p 'dired-mode) (display-graphic-p))
    (if all-the-icons-dired-mode
        (all-the-icons-dired--setup)
      (all-the-icons-dired--teardown))))
#+end_src

Hook with ~dired-mode~
#+begin_src emacs-lisp
(add-hook 'dired-mode-hook 'all-the-icons-dired-mode)
#+end_src
* Terminals
** Vterm
#+begin_src emacs-lisp
(use-package vterm
  :ensure nil
  :config
  ;; Check if it's one of my guix systems to load from
  ;; ~/.guix-profile. Otherwise we use /bin/zsh.
  (if
      (or (string= (system-name) "fsociety")
	  (string= (system-name) "heisenberg"))
      (setq vterm-shell "~/.guix-profile/bin/zsh")
    (setq vterm-shell "/bin/zsh")))
#+end_src
** Eshell
#+begin_src emacs-lisp
  (use-package eshell
    :ensure nil
    :bind (("C-c e" . 'eshell))
    :config
    (defvar eshell-path-env (getenv "~/.local/bin")))

  (defun with-face (str &rest face-plist)
    (propertize str 'face face-plist))

  (defun apollo-eshell-prompt ()
    (let ((winter-blue "#3F3B6C")
	  (white-summer "#E5E5CB")
	  (green-night "#03C988")
	  (orange-summer "#FFB100")
	  (green-summer "#A3BB98")
	  (summer-sea "#2192FF")
	  (black "#000000"))
      (concat
       (with-face (concat "[" user-login-name) :foreground orange-summer :background black)
       (with-face "@" :foreground orange-summer :background black)
       (with-face (concat system-name "]\n") :foreground orange-summer :background black)
       (with-face (concat "|" (eshell/pwd) ) :foreground "#F0E9D2" :background winter-blue)
       (with-face (format-time-string " | %H:%M" (current-time)) :background winter-blue :foreground "#888")
       (with-face "\n -> "))))

  ;; (setq eshell-prompt-function 'apollo-eshell-prompt)
  ;; (setq eshell-highlight-prompt t)  
#+end_src
* Custom
** ChatGPT
#+begin_src emacs-lisp
  (require 'seq)
  (eval-when-compile
    (require 'cl-lib)
    (require 'subr-x)
    (require 'env)
    (require 'json))
  (defgroup chatgpt nil
    "ChatGPT frontend."
    :group 'convenience
    :prefix "chatgpt-")
  (defcustom chatgpt-max-tokens 300
    "Upper limit on the number of tokens the API will return."
    :type 'integer)
  (defvar chatgpt-buffer "*ChatGPT*"
    "Title of the buffer used to store the results of an OpenAI API query.")
  (define-error 'chatgpt-error "An error related to the ChatGPT emacs package")
  (define-error 'chatgpt-parsing-error
    "An error caused by a failure to parse an OpenAI API Response")
  (defmacro chatgpt-show-results-buffer-if-active ()
    "Show the results in other window if necessary."
    `(if (and (not ;; visible
	       (get-buffer-window chatgpt-buffer))
	      (called-interactively-p 'interactive))
	 (lambda (&optional buf) (ignore buf)
	   (with-current-buffer buf
	     (view-mode t))
	   (switch-to-buffer-other-window chatgpt-buffer))
       #'identity))
  ;;;###autoload
  (defun chatgpt-prompt (prompt callback)
    "Query OpenAI with PROMPT calling the CALLBACK function on the resulting buffer.
  Returns buffer containing the text from this query"
    (interactive (list (read-string "Prompt ChatGPT with: ")
		       (lambda (buf) (with-current-buffer buf
				  (view-mode t))
			 (switch-to-buffer-other-window chatgpt-buffer))))
    (chatgpt--query-open-api prompt
			     (lambda (results)
			       (with-current-buffer (get-buffer-create chatgpt-buffer)
				 ;; Erase contents of buffer after receiving response
				 (read-only-mode -1)
				 (erase-buffer)
				 (insert results)
				 ;; Return the chatgpt output buffer for non interactive usage
				 (funcall callback (current-buffer))))))
  ;;;###autoload
  (defun chatgpt-fix-region (BEG END)
    "Takes a region BEG to END asks ChatGPT to explain whats wrong with it.
  It then displays the answer in the `chatgpt-buffer'."
    (interactive "r")
    (let ((current-code (buffer-substring BEG END)))
      (chatgpt-prompt (chatgpt--append-to-prompt
		       current-code
		       "Why doesn't this code work?")
		      (chatgpt-show-results-buffer-if-active))))
  ;;;###autoload
  (defun chatgpt-explain-region (BEG END)
    "Takes a region BEG to END asks ChatGPT what it does.
  The answer in the displays in `chatgpt-buffer'."
    (interactive "r")
    (let ((current-code (buffer-substring BEG END)))
      (chatgpt-prompt (chatgpt--append-to-prompt
		       current-code
		       "What does this code do?")
		      (chatgpt-show-results-buffer-if-active))))
  ;;;###autoload
  (defun chatgpt-gen-tests-for-region (BEG END)
    "Takes a region BEG to END asks ChatGPT to write a test for it.
  It then displays the answer in the `chatgpt-buffer'."
    (interactive "r")
    (let ((current-code (buffer-substring BEG END)))
      (chatgpt-prompt (chatgpt--append-to-prompt
		       current-code
		       "Write me a tests for this code")
		      (chatgpt-show-results-buffer-if-active))))
  ;; TODO currently just says what changed but doesn't wanna show the code it's self
  ;; (defun chatgpt-optimize-region (BEG END)
  ;;   "Takes a region BEG to END asks ChatGPT to optimize it for speed.
  ;; It then displays the answer in the `chatgpt-buffer'."
  ;;   (interactive "r")
  ;;   (let ((current-code         (buffer-substring BEG END)))
  ;;     (chatgpt-prompt (chatgpt--append-to-prompt
  ;;                      current-code
  ;;                      "Refactor this code for speed and tell me what you changed and why it's faster")
  ;;                     (chatgpt-show-results-buffer-if-active))))
  ;;;###autoload
  (defun chatgpt-refactor-region (BEG END)
    "Takes a region BEG to END asks ChatGPT refactor it.
  It then displays the answer in the `chatgpt-buffer'."
    (interactive "r")
    (let ((current-code         (buffer-substring BEG END)))
      (chatgpt-prompt (chatgpt--append-to-prompt
		       current-code
		       "Refactor this code and tell me what you changed")
		      (chatgpt-show-results-buffer-if-active))))
  ;;;###autoload
  (defun chatgpt-prompt-region (BEG END)
    "Prompt ChatGPT with the region BEG END.
  It then displays the results in a separate buffer `chatgpt-buffer'."
    (interactive "r")
    (chatgpt-prompt (buffer-substring BEG END)
		    ;; Show the results if not already being viewed
		    (chatgpt-show-results-buffer-if-active)))
  ;;;###autoload
  (defun chatgpt-prompt-region-and-replace (BEG END)
    "Replace region from BEG to END with the response from the ChatGPT API.
  The region is BEG and until END"
    (interactive "r")
    (let ((og-buf (current-buffer)))
      (chatgpt-prompt (buffer-substring BEG END)
		      (lambda (buf)
			(save-excursion
			  (with-current-buffer og-buf
			    (delete-region BEG END)
			    (goto-char BEG)
			    (insert (with-current-buffer buf (buffer-string)))))))))
  (defun chatgpt--append-to-prompt (prompt comment-str)
    "Append the string COMMENT-STR extra information to a PROMPT as a comment."
    (concat prompt
	    "\n"
	    comment-start
	    " "
	    comment-str))
  (defun chatgpt--extract-text-from-query (query-result)
    "Extract the resulting text from a given OpenAI response QUERY-RESULT."
    (condition-case err
	(thread-last query-result
		     (assoc-default 'choices)
		     seq-first
		     (assoc-default 'text)
		     string-trim)
      (error
       (signal 'chatgpt-parsing-error err))))
  (defun chatgpt--parse-response (status callback)
    "Ignoring STATUS and parse the response executing the CALLBACK function on the resulting string."
    (ignore status)
    ;; All this is ran inside the buffer containing the response
    (goto-char 0)
    (re-search-forward "^$")
    (funcall callback (chatgpt--extract-text-from-query (json-read))))
  (defun chatgpt--query-open-api (prompt callback)
    "Send a string PROMPT to OpenAI API and pass the resulting buffer to CALLBACK.
  The environment variable OPENAI_API_KEY is used as your API key
  You can register an account here
  https://beta.openai.com/docs/introduction/key-concepts"
    (let* ((api-key (getenv secret-api))
	   (url-request-method (encode-coding-string "POST" 'us-ascii))
	   (url-request-extra-headers `(("Content-Type" . "application/json")
					("Authorization" . ,(format "Bearer %s" api-key))))
	   (url-request-data (json-encode
			      `(("model" . "text-davinci-003")
				("prompt" . ,prompt)
				("max_tokens" . ,chatgpt-max-tokens)
				("temperature" . 0)))))
      (cl-assert (not (string= "" api-key))
		 t
		 "Current contents of the environmental variable OPENAI_API_KEY
  are '%s' which is not an appropriate OpenAI token please ensure
  you have the correctly set the OPENAI_API_KEY variable"
		 api-key)
      (url-retrieve
       "https://api.openai.com/v1/completions"
       'chatgpt--parse-response
       (list callback))))
#+end_src
** Random functions
#+begin_src emacs-lisp
(defun apollo/html-boostrap-boilerplate ()
  "Insert html boilerplate with boostrap link."
  (interactive)
  (insert
"<!DOCTYPE html>
<html lang=\"en\">
  <head>
    <meta charset=\"UTF-8\">
    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">
    <meta http-equiv=\"X-UA-Compatible\" content=\"ie=edge\">
    <title>My Title</title>
    <link rel=\"stylesheet\" href=\"./style.css\">
    <link href=\"https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css\" rel=\"stylesheet\" integrity=\"sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi\" crossorigin=\"anonymous\">
  </head>
  <body>
    <main>
        <h1>Starting point</h1>
    </main>
	<script src=\"index.js\"></script>
  </body>
</html>" ))


(defun apollo/center-buffer ()
  "Centers/Uncenters selected buffer"
  (interactive)
  (if visual-fill-column-center-text
      (setq visual-fill-column-center-text nil)
    (setq visual-fill-column-center-text t))
  (visual-fill-column-mode 1)
  (message "General's task completed!"))


(defun apollo/rofi-switch-window ()
  "Navigate X11 buffers using rofi."
  (interactive)
  (start-process-shell-command
   "rofi" nil "rofi -show window"))

(defun apollo/run-in-background (command)
  "Run COMMAND in the background."
  (let ((command-parts (split-string command "[ ]+")))
    (apply #'call-process `(,(car command-parts) nil 0 nil ,@(cdr command-parts)))))

(defun rofi ()
  "Run Rofi."
  (interactive)
  (apollo/run-in-background "rofi -show drun"))

(defun apollo/volume-increase ()
  "Increase Volume."
  (interactive)
  (start-process-shell-command
   "amixer" nil "amixer sset Master 5%+"))

(defun apollo/volume-decrease ()
  "Decrease Volume."
  (interactive)
  (start-process-shell-command
   "amixer" nil "amixer sset Master 5%-"))

(defun apollo/restore-wallpaper ()
  "Set NAME as wallpaper."
  (interactive)
  (start-process-shell-command
   "feh" nil  "feh --bg-scale ~/dotfiles/wallpaper.png"))

(defun apollo/emacs-keys ()
    "Swap caps with ctrl."
    (interactive)
    (start-process-shell-command
     "setxkbmap" nil "setxkbmap us -option ctrl:swapcaps"))

(defun apollo/greek-keyboard ()
    "Swap caps with ctrl."
    (interactive)
    (start-process-shell-command
     "setxkbmap" nil "setxkbmap gr"))
  
(defun apollo/exwm-update-class ()
  (exwm-workspace-rename-buffer exwm-class-name))

(defun eshell-new()
  "Open a new instance of eshell."
  (interactive)
  (eshell 'N))

(defun make-mini-geiser ()
  (interactive)
  (split-window-below 60)
  (geiser nil))

(defun start-polybar ()
  "Check which system is running, start polybar accordingly."
  (interactive)
  (if (string= (system-name) "fsociety")
      (start-process-shell-command
       "polybar" nil "polybar main & polybar second")
    (start-process-shell-command
     "polybar" nil "polybar main")))
#+end_src
** Key-bindings
#+begin_src emacs-lisp
(global-set-key (kbd "<escape>") 'keyboard-escape-quit)
#+end_src
*** General
#+begin_src emacs-lisp

  ;; my general's leader key!
  (defconst general-key "C-c g")

  (general-create-definer general-does
    :prefix  general-key)

  ;; Basic functions
  (general-define-key
   "C-d" 'kill-region
   "C-k" 'copy-region-as-kill
   "C-c v" 'multi-vterm-next
   "C-x 9" 'make-mini-buffer
   "C-c l e" 'apollo/emacs-keys
   ;;Change keyboard layouts/language
   "C-c l g" 'apollo/greek-keyboard
   "C-κ" 'apollo/emacs-keys
   "C-x C-b" 'ibuffer)



  ;; My Generals does:
  (general-does
    "t" 'counsel-load-theme
    "l" 'display-line-numbers-mode
    "v" 'multi-vterm-next
    "e" 'eshell
    "i" 'circe
    "c" 'apollo/center-buffer
    "m" 'mu4e
    "f" 'elfeed
    "C-t" 'telega)

  ;;pdf-tools
  (general-define-key
   :keymaps 'pdf-view-mode-map
   "C-c d" 'pdf-view-midnight-minor-mode
   "C-s" 'isearch-forward
   "C-o" 'pdf-isearch-occur)

  ;;vterm 
  (general-does
    :keymaps 'vterm-mode-map
    "n" 'multi-vterm-next
    "o" 'multi-vterm
    "p" 'multi-vterm-prev)

  (general-does
    :keymaps 'eshell-mode-map
    "n" 'eshell-new)

  (general-does
    :keymaps 'org-mode-map
    "3" 'org-insert-image-size-300)  
#+end_src
*** Hydra
#+begin_src emacs-lisp
(defhydra hydra-zoom (global-map "s-z")
  "zoom"
  ("=" text-scale-increase "in")
  ("-" text-scale-decrease "out"))
#+end_src
* Org-mode Configuration
** org-make-toc
#+begin_src emacs-lisp
  (add-hook 'org-mode-hook 'org-make-toc-mode)
#+end_src
** Themes
*** Dracula
#+begin_src emacs-lisp
(defun apollo/org-theme-dracula ()
  "Enable Dracula theme for Org headers."
  (interactive)
  (dolist
      (face
       '((org-level-1 1.7 "#8be9fd" extra-bold)
         (org-level-2 1.6 "#bd93f9" extra-bold)
         (org-level-3 1.5 "#50fa7b" bold)
         (org-level-4 1.4 "#ff79c6" semi-bold)
         (org-level-5 1.3 "#9aedfe" normal)
         (org-level-6 1.2 "#caa9fa" normal)
         (org-level-7 1.1 "#5af78e" normal)
         (org-level-8 1.0 "#ff92d0" normal)))
    (set-face-attribute (nth 0 face) nil
			:font "JetBrains Mono"
			:weight (nth 3 face)
			:height (nth 1 face)
			:foreground (nth 2 face)))
  (set-face-attribute 'org-table nil
		      :font "JetBrains Mono"
		      :weight 'normal
		      :height 1.0
		      :foreground "#bfafdf"))
#+end_src
*** Darkone
#+begin_src emacs-lisp
(defun apollo/org-theme-darkone ()
  "Enable Darkone theme for Org headers."
  (interactive)
  (dolist
      (face
       '((org-level-1 1.70 "#51afef" bold)
         (org-level-2 1.55 "#7FBCD2" bold)
         (org-level-3 1.40 "#da8548" bold)
         (org-level-4 1.20 "#da8548" semi-bold)
         (org-level-5 1.20 "#5699af" normal)
         (org-level-6 1.20 "#a9a1e1" normal)
         (org-level-7 1.10 "#46d9ff" normal)
         (org-level-8 1.00 "#ff6c6b" normal)))
    (set-face-attribute (nth 0 face) nil
			:font "Jetbrains Mono"
			:weight (nth 3 face)
			:height (nth 1 face)
			:foreground (nth 2 face)))
  (set-face-attribute 'org-table nil
		      :font "Jetbrains Mono"
		      :weight 'normal
		      :height 1.0
		      :foreground "#A66CFF"))

#+end_src
** Settings
#+begin_src emacs-lisp
  (setq org-directory "~/org/"
	org-agenda-files '("~/org/agenda.org")
	org-default-notes-file (expand-file-name "notes.org" org-directory)
	org-ellipsis " ▼ "
	org-log-done 'time
	org-hide-emphasis-markers nil ;;change to t to hide emphasis markers
	org-table-convert-region-max-lines 20000
	org-agenda-start-log-mode t
	org-log-done 'time
	org-log-into-drawer t
	org-indent-mode t
	org-todo-keywords        ;; This overwrites the default Doom org-todo-keywords
	'((sequence
	   "TODO(t)"           ;; A task that is ready to be tackled
	   "BLOG(b)"           ;; Blog writing assignments
	   "GYM(g)"            ;; Things to accomplish at the gym
	   "WAIT(w)"           ;; Something is holding up this task
	   "|"                 ;; The pipe necessary to separate "active" states and "inactive" states
	   "DONE(d)"           ;; Task has been completed
	   "CANCELLED(c)" ))
	org-superstar-headline-bullets-list '("◉" "●" "○" "●" "○" "●" "◆")
	org-superstar-itembullet-alist '((?+ . ?➤) (?- . ?✦))) ;; changes +/- symbols in item lists)

  ;; Hooks
  (add-hook 'org-mode-hook 'apollo/org-theme-dracula)
  (add-hook 'org-mode-hook 'org-superstar-mode)
  (add-hook 'org-mode-hook 'flyspell-mode)
  (add-hook 'org-mode-hook 'toc-org-mode)
#+end_src
** Babel

#+begin_src emacs-lisp
  (defadvice org-edit-src-code (around set-buffer-file-name activate compile)
    (let ((file-name (buffer-file-name))) ;; (1)
      ad-do-it                            ;; (2)
      (setq buffer-file-name file-name))) ;; (3)

  (org-babel-do-load-languages
   'org-babel-load-languages
   '((emacs-lisp . t)
     (python . t)))

  (add-to-list 'org-structure-template-alist '("sh" . "src shell"))
  (add-to-list 'org-structure-template-alist '("b" . "src bash"))
  (add-to-list 'org-structure-template-alist '("el" . "src emacs-lisp"))
  (add-to-list 'org-structure-template-alist '("py" . "src python"))

  ;;Auto tangle
  (add-hook 'org-mode-hook 'org-auto-tangle-mode)
#+end_src

* Markdown
** Theme
#+begin_src emacs-lisp
(defun apollo/markdown-theme ()
  (interactive)
  (dolist
      (face
       '(markdown-header-face-1 :height 2.0))))
#+end_src
** Settings
#+begin_src emacs-lisp
(setq markdown-header-scaling t)


(use-package markdown-mode
  :ensure t
  :mode (".md" . gfm-mode)
  :init (setq markdown-command "multimarkdown"))
#+end_src
* Programming
** Essentials
#+begin_src emacs-lisp
(electric-pair-mode 1)
(global-flycheck-mode)

(use-package company
  :after lsp-mode
  :hook (lsp-mode . company-mode)
  :bind (:map company-active-map
         ("<tab>" . company-complete-selection))
        (:map lsp-mode-map
         ("<tab>" . company-indent-or-complete-common))
  :custom
  (company-minimum-prefix-length 1)
  (company-idle-delay 0.0))

(use-package dap-mode
  :custom
  (lsp-enable-dap-auto-configure nil)
  :config
  (dap-ui-mode 1))

(use-package company-box
  :hook (company-mode . company-box-mode))  
#+end_src
*** Magit
#+begin_src emacs-lisp
(use-package magit
  :custom
  (magit-display-buffer-function #'magit-display-buffer-same-window-except-diff-v1))
#+end_src
** Emacs lisp
#+begin_src emacs-lisp
(setq tab-always-indent 'complete)
(add-to-list 'completion-styles 'initials t)

(add-hook 'emacs-lisp-mode-hook #'rainbow-delimiters-mode)
(add-hook 'scheme-mode-hook #'rainbow-delimiters-mode)
#+end_src
** LSP-Mode
#+begin_src emacs-lisp
(defun apollo/lsp-mode-setup ()
  (setq lsp-headerline-breadcrumb-segments '(path-up-to-project file symbols))
  (lsp-headerline-breadcrumb-mode))

(use-package lsp-mode
  :commands (lsp lsp-deferred)
  :hook (lsp-mode . apollo/lsp-mode-setup)
  :init
  (setq lsp-keymap-prefix "C-c l")  ;; Or 'C-l', 's-l'
  :config
  (lsp-enable-which-key-integration t)
  (setq lsp-pyls-server-command "~/.local/bin/pylsp"))

(use-package lsp-ui
  :hook (lsp-mode . lsp-ui-mode)
  :custom
  (lsp-ui-doc-position 'bottom))  
#+end_src
** Python
#+begin_src emacs-lisp
(use-package python-mode
    :ensure t
    :mode ".py"
    :hook (python-mode . lsp-deferred)
    :custom
    (dap-python-debugger 'debugpy)
    :config
    (require 'dap-python))

(use-package pyvenv
  :config
  (pyvenv-mode 1))    
#+end_src
** JSON
#+begin_src emacs-lisp
(use-package json-mode
    :mode ".json"
    :hook (json-mode . lsp-deferred))
#+end_src
** Javascript
#+begin_src emacs-lisp
(use-package rjsx-mode
  :mode ".js"
  :hook (rjsx-mode . lsp-deferred)
  :config
  (defadvice js-jsx-indent-line (after js-jsx-indent-line-after-hack activate)
  "Workaround sgml-mode and follow airbnb component style."
  (save-excursion
    (beginning-of-line)
    (if (looking-at-p "^ +\/?> *$")
        (delete-char sgml-basic-offset)))))
#+end_src
* Elfeed
** Feeds
#+begin_src emacs-lisp
(require 'elfeed)
(require 'elfeed-goodies)

(setq elfeed-feeds (quote
                    (
                     ("https://hackaday.com/blog/feed/" hackaday linux)
                     ("https://opensource.com/feed" opensource linux)
                     ("https://linux.softpedia.com/backend.xml" softpedia linux)
                     ("https://www.thelancet.com/rssfeed/lancet_current.xml" Lancet lancet)
                     ("https://www.thelancet.com/rssfeed/lancet_online.xml" LancetOnline lancet)
                     ("https://www.thelancet.com/rssfeed/lanmic_online.xml" LancetOnline Microbiology)
                     ("https://www.techrepublic.com/rssfeeds/topic/open-source/" techrepublic linux)
		     ("https://www.thanosapollo.com/public/feed.xml" Thanos)
		     ("https://protesilaos.com/news.xml" Protesilaos News)
		     ("https://protesilaos.com/codelog.xml" Proetesilaos Coding)
		     ("https://stallman.org/rss/rss.xml" Stallman news)
                     )))
#+end_src
** Settings
#+begin_src emacs-lisp
(setq elfeed-goodies/entry-pane-size 0.5)
#+end_src
* PDF
#+begin_src emacs-lisp

;;Add pdf-isearch-minor-mode hook, otherwise isearch will be buggy
;;Darkmode hook, cause I don't want color or light in my life, I'm a vampire.
(add-hook 'pdf-view-mode-hook 'pdf-isearch-minor-mode)
(add-hook 'pdf-view-mode-hook 'pdf-view-midnight-minor-mode)
(add-to-list 'auto-mode-alist '("\\.pdf\\'" . pdf-view-mode))
#+end_src
* Telega
In ~GuixSD~ systems I have telegram installed via guix, and it's loaded via ~guix-emacs-autoload-packages~
In macOS, I have installed it through homebrew. 
#+begin_src emacs-lisp
(when (equal system-type 'darwin)
  (use-package telega
    :load-path  "~/telega.el"
    :commands (telega)
    :defer t
    :config
    (setq telega-server-libs-prefix "/opt/homebrew/Cellar/tdlib/HEAD-3d0140b")))
#+end_src

* mu4e | Email Configuration

#+begin_src emacs-lisp
  ;; In macOS, load mu4e through homebrew
  (when (equal system-type 'darwin)
    (use-package mu4e
      :load-path  "/opt/homebrew/share/emacs/site-lisp/mu/mu4e/"))
  ;; Check if we have mu4e available
  ;; if t load mu4e settings
  (when (require 'mu4e t)
    (setq mu4e-update-interval (* 10 60))
    (setq mu4e-get-mail-command "mbsync -a")
    (setq mu4e-maildir-list "~/Mail/Inbox")

    (defun set-mu4e-context (context-name full-name mail-address signature server)
      "Return a mu4e context named CONTEXT-NAME with :match-func matching
    folder name CONTEXT-NAME in Maildir. The context's `user-mail-address',
    `user-full-name' and `mu4e-compose-signature'`smtpmail-smpt-server' is set to MAIL-ADDRESS
    FULL-NAME SIGNATURE and SERVER respectively.
    Special folders are set to context specific folders."
      (let ((dir-name (concat "/" context-name)))
	(make-mu4e-context
	 :name context-name
	 ;; we match based on the maildir of the message
	 :match-func
	 `(lambda (msg)
	    (when msg
	      (string-match-p
	       ,(concat "^" dir-name)
	       (mu4e-message-field msg :maildir))))
	 :vars
	 `((user-mail-address    . ,mail-address)
	   (user-full-name       . ,full-name)
	   (mu4e-sent-folder     . ,(concat dir-name "/Sent"))
	   (mu4e-drafts-folder   . ,(concat dir-name "/Drafts"))
	   (mu4e-trash-folder    . ,(concat dir-name "/Trash"))
	   (mu4e-trash-folder    . ,(concat dir-name "/Starred"))
	   (mu4e-refile-folder   . ,(concat dir-name "/Archive"))
	   (smtpmail-smtp-service . ,465)
	   (smtpmail-smtp-server . ,server)
	   (mu4e-compose-signature . ,signature)))))
    ;;Fixing duplicate UID errors when using mbsync and mu4e
    (setq mu4e-change-filenames-when-moving t)

    (setq mu4e-maildir-shortcuts
	  '(("/Fastmail/Inbox"             . ?i)
	    ("/Fastmail/Sent" . ?s)
	    ;; ("/Gmail/Trash"     . ?t)
	    ;; ("/Gmail/Drafts"    . ?d)
	    ;; ("/Gmail/[Gmail]/All Mail"  . ?a
	    ))

    (setq mu4e-contexts
	  `(, (set-mu4e-context
	       "Fastmail" "Thanos Apollo"
	       "thanos@thanosapollo.com" "Thanos\nhttps://thanosapollo.com/public"
	       "smtp.fastmail.com")))

    ;; (setq smtpmail-smtp-service 465
    ;;       smtpmail-stream-type  'ssl
    ;;       smtpmail-smtp-server "smtp.fastmail.com")



    (setq message-send-mail-function 'smtpmail-send-it
	  smtpmail-stream-type 'ssl))


#+end_src

# ** Settings & Context setup
# #+begin_src emacs-lisp
#   (require 'mu4e)
#   (setq mu4e-update-interval (* 10 60))
#   (setq mu4e-get-mail-command "mbsync -a")
#   (setq mu4e-maildir-list "~/Mail/Inbox")

#   (defun set-mu4e-context (context-name full-name mail-address signature server)
#     "Return a mu4e context named CONTEXT-NAME with :match-func matching
#     folder name CONTEXT-NAME in Maildir. The context's `user-mail-address',
#     `user-full-name' and `mu4e-compose-signature'`smtpmail-smpt-server' is set to MAIL-ADDRESS
#     FULL-NAME SIGNATURE and SERVER respectively.
#     Special folders are set to context specific folders."
#     (let ((dir-name (concat "/" context-name)))
#       (make-mu4e-context
#        :name context-name
#        ;; we match based on the maildir of the message
#        :match-func
#        `(lambda (msg)
# 	  (when msg
# 	    (string-match-p
# 	     ,(concat "^" dir-name)
# 	     (mu4e-message-field msg :maildir))))
#        :vars
#        `((user-mail-address    . ,mail-address)
# 	 (user-full-name       . ,full-name)
# 	 (mu4e-sent-folder     . ,(concat dir-name "/Sent"))
# 	 (mu4e-drafts-folder   . ,(concat dir-name "/Drafts"))
# 	 (mu4e-trash-folder    . ,(concat dir-name "/Trash"))
# 	 (mu4e-trash-folder    . ,(concat dir-name "/Starred"))
# 	 (mu4e-refile-folder   . ,(concat dir-name "/Archive"))
# 	 (smtpmail-smtp-service . ,465)
# 	 (smtpmail-smtp-server . ,server)
# 	 (mu4e-compose-signature . ,signature)))))

#   ;;Fixing duplicate UID errors when using mbsync and mu4e
#   (setq mu4e-change-filenames-when-moving t)
#   ;; Messaging
#   (setq message-send-mail-function 'smtpmail-send-it
# 	smtpmail-stream-type 'ssl)
# #+end_src
# ** Shortcuts
# #+begin_src emacs-lisp
# (setq mu4e-maildir-shortcuts
#       '(("/Fastmail/Inbox"             . ?i)
#         ("/Fastmail/Sent" . ?s)
# 	))
# #+end_src
# ** Contexts
# #+begin_src emacs-lisp
#   (setq mu4e-contexts
# 	`(, (set-mu4e-context
# 	     "Fastmail" "Thanos Apollo"
# 	     "thanos@thanosapollo.com" "Thanos\nhttps://thanosapollo.com/public"
# 	     "smtp.fastmail.com")))
# #+end_src
* EXWM
EXWM configuration is tangled with ~.exwm~
+ In GuixSD ~emacs-exwm~ package will look for ~~/.exwm~ 

#+begin_src emacs-lisp :tangle ../.exwm.el
(defun apollo/exwm-init-hook ()
  "Do this upon start."
  (if (string= (system-name) "fsociety") ;; Check if it's my desktop, otherwise display battery
      (display-battery-mode 0)
    (display-battery-mode 1))

  (setq display-time-day-and-date t)
  (display-time-mode 1)
  
  (exwm-firefox-holyK-mode 1)

  ;;Launch apps that will run in the background
  ;;  (apollo/run-in-background "blueman-applet")
  (apollo/run-in-background "picom")
  ;;  (apollo/run-in-background "nm-applet")
  (apollo/emacs-keys)
  (apollo/restore-wallpaper)
  )

(defun apollo/exwm-update-class ()
  (exwm-workspace-rename-buffer exwm-class-name))


(setq exwm-workspace-number 6)
;; When window "class" updates, use it to set the buffer name
(add-hook 'exwm-update-class-hook #'apollo/exwm-update-class)

;;When EXWM starts up, run this hook
(add-hook 'exwm-init-hook #'apollo/exwm-init-hook)
(start-process-shell-command
 "xrandr" nil "xrandr --output DisplayPort-0 --primary --mode 2560x1440 --pos 1930x0 --rotate normal --output DisplayPort-1 --off --output DisplayPort-2 --off --output HDMI-A-0 --mode 1920x1080 --pos 0x0 --rotate normal")

;; Set the screen resolution

(require 'exwm-randr)
(setq exwm-randr-workspace-monitor-plist '(0 "DP-1" 2 "HDMI-A-0"))
(add-hook 'exwm-randr-screen-change-hook
          (lambda ()
            (start-process-shell-command
	     "xrandr" nil "xrandr --output DisplayPort-2 --primary --mode 2560x1440 --pos 1920x0 --rotate normal --output HDMI-A-0 --mode 1920x1080 --pos 0x0 --rotate normal" )))
(exwm-randr-enable)


;; Load the system tray before exwm-init
(require 'exwm-systemtray)
(exwm-systemtray-enable)

;; These keys should always pass through to Emacs
(setq exwm-input-prefix-keys
      '(?\C-x
	?\C-u
	?\C-h
	?\C-w
	?\M-x
	?\M-`
	?\M-&
	?\M-:
	?\s-d
	?\C-\M-j  ;; Buffer list
	?\C-\
	?\C-k
	?\C-y
	?\C-n
	?\C-p
	?\C-f
	?\C-b
	?\C-s
	?\M-f
	?\M-b
	?\M-<
	?\M->))

;; Ctrl+Q will enable the next key to be sent directly
(define-key exwm-mode-map [?\C-q] 'exwm-input-send-next-key)

;; Set up global key bindings.  These always work, no matter the input state!
;; Keep in mind that changing this list after EXWM initializes has no effect.
(setq exwm-input-global-keys
      `(

        ([?\s-r] . exwm-reset)



        ;; ;; Launch applications via shell command
        ;; ([?\s-&] . (lambda (command)
        ;;              (interactive (list (read-shell-command "$ ")))
        ;;              (start-process-shell-command command nil command)))

        ;; Switch workspace
        ([?\s-e] . exwm-workspace-switch)
        ([?\s-`] . (lambda () (interactive) (exwm-workspace-switch-create 0)))
        ([?\s-2] . (lambda () (interactive) (exwm-workspace-switch-create 1)))
        ([?\s-3] . (lambda () (interactive) (exwm-workspace-switch-create 2)))
        ([?\s-4] . (lambda () (interactive) (exwm-workspace-switch-create 3)))
        ([?\s-5] . (lambda () (interactive) (exwm-workspace-switch-create 4)))

        ,@(mapcar (lambda (i)
                    `(,(kbd (format "s-%d" i)) .
                      (lambda ()
                        (interactive)
                        (exwm-workspace-switch-create ,i))))
                  (number-sequence 0 9))))

(defun exwm-enlarge-horizontally-50 ()
  (interactive)
  (exwm-layout-enlarge-window-horizontally 50))

(defun exwm-shrink-horizontally-50 ()
  "Shrink window horizontally by 10"
  (interactive)
  (exwm-layout-shrink-window-horizontally 50))

(defun exwm-shrink-vertically-50 ()
  "Shrink window by 50."
  (interactive)
  (exwm-layout-shrink-window 50))

(defun exwm-enlarge-vertically-50 ()
  "Enlarge window by 50."
  (interactive)
  (exwm-layout-enlarge-window 50))

(exwm-input-set-key (kbd "C-c d") 'dmenu)
(exwm-input-set-key (kbd "s-<tab>") 'rofi)
(exwm-input-set-key (kbd "s-Q") 'kill-emacs)
(exwm-input-set-key (kbd "<XF86AudioRaiseVolume>") 'apollo/volume-increase)
(exwm-input-set-key (kbd "<XF86AudioLowerVolume>") 'apollo/volume-decrease)
(exwm-input-set-key (kbd "s-0") 'apollo/emacs-keys)
(exwm-input-set-key (kbd "s-9") 'apollo/greek-keyboard)
(exwm-input-set-key (kbd "C-c C-<left>") 'exwm-shrink-horizontally-50)
(exwm-input-set-key (kbd "C-c C-<right>") 'exwm-enlarge-horizontally-50)
(exwm-input-set-key (kbd "C-c C-<up>") 'exwm-shrink-vertically-50)
(exwm-input-set-key (kbd "C-c C-<down>") 'exwm-enlarge-vertically-50)
(exwm-input-set-key (kbd "C-c C-e") 'exwm-layout-toggle-fullscreen)


(exwm-enable)
#+end_src