* Initialization
** Customize in different file
#+BEGIN_SRC emacs-lisp
  (setq custom-file (locate-user-emacs-file "custom.el"))
  (load custom-file :no-error-if-file-is-missing)
#+END_SRC
** Garbage Collection Improvement
#+BEGIN_SRC emacs-lisp
  (defun my-minibuffer-setup-hook ()
    (setq gc-cons-threshold most-positive-fixnum))

  (defun my-minibuffer-exit-hook ()
    (setq gc-cons-threshold 800000000))

  (add-hook 'minibuffer-setup-hook #'my-minibuffer-setup-hook)
  (add-hook 'minibuffer-exit-hook #'my-minibuffer-exit-hook)

  (defun gc-idle-timer ()
    "Trigger garbage collection when Emacs is idle for 0.5 seconds."
    (run-with-idle-timer 1.2 t 'garbage-collect))

  (gc-idle-timer)
#+END_SRC
** Packages
#+BEGIN_SRC emacs-lisp
  ;; package lists
  (require 'package)
  (add-to-list 'package-archives '("gnu"   . "https://elpa.gnu.org/packages/"))
  (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
  (package-initialize)

  ;; use package
  (when (< emacs-major-version 29)
    (unless (package-installed-p 'use-package)
      (unless package-archive-contents
	(package-refresh-contents))
      (package-install 'use-package)))

  ;; remove stupid warnings
  (add-to-list 'display-buffer-alist
	       '("\\`\\*\\(Warnings\\|Compile-Log\\)\\*\\'"
		 (display-buffer-no-window)
		 (allow-no-window . t)))

#+END_SRC

* Basic changes
** Behaviour
#+BEGIN_SRC emacs-lisp

  (use-package no-littering)

  (setq make-backup-files nil
	create-lockfiles nil
	erc-join-buffer 'window
	confirm-kill-processes nil)

  (setq inhibit-startup-message t
	backup-inhibited t)

#+END_SRC
** Org Mode
#+BEGIN_SRC emacs-lisp

  (setq org-startup-folded t)

#+END_SRC
** UI
#+BEGIN_SRC emacs-lisp

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

  (column-number-mode +1)
  (global-display-line-numbers-mode t)
  (setq-default fill-column 80)

  (set-frame-parameter (selected-frame) 'alpha '(90 . 90))
  (add-to-list 'default-frame-alist '(alpha . (90 . 90)))

  (use-package rainbow-delimiters
    :hook (prog-mode . rainbow-delimiters-mode))

  (use-package ansi-color
    :hook (compilation-filter . ansi-color-compilation-filter))

#+END_SRC
** Text Editing
#+BEGIN_SRC emacs-lisp
  ;; scrolling
  (setq scroll-up-aggressively nil
	scroll-down-aggressively nil
	scroll-conservatively 101
	display-line-numbers-type t)
  (setq scroll-step 1)
  (setq scroll-margin 8)
  (global-set-key (kbd "M-n") 'scroll-up-line)
  (global-set-key (kbd "M-p") 'scroll-down-line)

  ;; electric pair
  (electric-pair-mode +1)

  ;; improved C-g dwim
  (defun prot/keyboard-quit-dwim ()
    (interactive)
    (cond
     ((region-active-p)
      (keyboard-quit))
     ((derived-mode-p 'completion-list-mode)
      (delete-completion-window))
     ((> (minibuffer-depth) 0)
      (abort-recursive-edit))
     (t
      (keyboard-quit))))
  (define-key global-map (kbd "C-g") #'prot/keyboard-quit-dwim)

  ;; expand keybind
  (use-package expand-region
    :bind("C-=" . er/expand-region))

  ;; better move beginning and end
  (use-package mwim
    :bind (("C-a" . mwim-beginning)
	   ("C-e" . mwim-end-of-line)))

  ;; selected marked text when typing start
  (use-package delsel
    :ensure nil ; no need to install it as it is built-in
    :hook (after-init . delete-selection-mode))

  (use-package multiple-cursors
    :bind (:map global-map
		("C->" . 'mc/mark-next-like-this)
		("C-<" . 'mc/mark-previous-like-this)
		("C-c C->" . 'mc/mark-all-like-this)
		:map mc/keymap
		("<return>" . nil)))

  ;; better commenting
  (use-package evil-nerd-commenter
    :bind ("M-;" . evilnc-comment-or-uncomment-lines))
#+END_SRC
** DIRED
#+BEGIN_SRC emacs-lisp
  (use-package dired
    :ensure nil
    :commands (dired)
    :hook
    ((dired-mode . dired-hide-details-mode)
     (dired-mode . hl-line-mode))
    :config
    (setq dired-recursive-copies 'always)
    (setq dired-recursive-deletes 'always)
    (setq dired-dwim-target t)
    (setq dired-kill-when-opening-new-dired-buffer t)
    (setq dired-listing-switches "-alh --group-directories-first"))

  (use-package dired-subtree
    :ensure t
    :after dired
    :bind
    ( :map dired-mode-map
      ("<tab>" . dired-subtree-toggle)
      ("TAB" . dired-subtree-toggle)
      ("<backtab>" . dired-subtree-remove)
      ("S-TAB" . dired-subtree-remove))
    :config
    (setq dired-subtree-use-backgrounds nil))
#+END_SRC
* Style
** Fonts
#+BEGIN_SRC emacs-lisp
  (let ((mono-spaced-font "Monospace")
	(proportionately-spaced-font "Sans"))
    (set-face-attribute 'default nil :family mono-spaced-font :height 100)
    (set-face-attribute 'fixed-pitch nil :family mono-spaced-font :height 1.0)
    (set-face-attribute 'variable-pitch nil :family proportionately-spaced-font :height 1.0))
#+END_SRC
** Themes
#+BEGIN_SRC emacs-lisp
  (use-package doom-themes
    :config
    (setq doom-themes-enable-bold t
	  doom-themes-enable-italic t)
    (doom-themes-org-config))

  (load-theme 'doom-dracula t)
#+END_SRC
** Icons
#+BEGIN_SRC emacs-lisp
  (use-package nerd-icons
  :ensure t)

(use-package nerd-icons-completion
  :ensure t
  :after marginalia
  :config
  (add-hook 'marginalia-mode-hook #'nerd-icons-completion-marginalia-setup))

(use-package nerd-icons-corfu
  :ensure t
  :after corfu
  :config
  (add-to-list 'corfu-margin-formatters #'nerd-icons-corfu-formatter))

(use-package nerd-icons-dired
  :ensure t
  :hook
  (dired-mode . nerd-icons-dired-mode))
#+END_SRC
** Diminish
#+BEGIN_SRC emacs-lisp
  (use-package diminish
    :diminish flymake-mode
    :diminish flycheck-mode
    :diminish eldoc-mode
    :diminish projectile-mode)
#+END_SRC
* Completion
#+BEGIN_SRC emacs-lisp

  (use-package vertico
    :custom
    (vertico-count 15)
    :diminish vertico-mode
    :bind (:map vertico-map
		("C-n" . vertico-next)
		("C-p" . vertico-previous))
    :init
    (vertico-mode t))

  (use-package vertico-directory
    :after vertico
    :ensure nil
    ;; More convenient directory navigation commands
    :bind (:map vertico-map
		("RET" . vertico-directory-enter)
		("DEL" . vertico-directory-delete-char)
		("M-DEL" . vertico-directory-delete-word)))

  (use-package consult
    :custom
    ;; Disable preview
    (consult-preview-key nil)
    :bind
    (("C-x b" . 'consult-buffer)    ;; Switch buffer, including recentf and bookmarks
     ("M-l"   . 'consult-git-grep)  ;; Search inside a project
     ("M-y"   . 'consult-yank-pop)  ;; Paste by selecting the kill-ring
     ("M-s"   . 'consult-line)      ;; Search current buffer, like swiper
     ("C-c i" . 'consult-imenu)     ;; Search the imenu
     ))

  (use-package marginalia
    :after vertico
    :custom
    (marginalia-annotators '(marginalia-annotators-heavy marginalia-annotators-light nil))
    :config
    (marginalia-mode))

  (use-package orderless
    :config
    (setq completion-styles '(orderless partial-completion basic)
	  completion-category-defaults nil
	  completion-category-overrides '((file (styles . (partial-completion))))))

  (use-package embark
    :bind
    (("C-."   . embark-act)         ;; Begin the embark process
     ("C-;"   . embark-dwim)        ;; good alternative: M-.
     ("C-h B" . embark-bindings)) ;; alternative for `describe-bindings'
    :config
    (use-package embark-consult))

  (use-package savehist
    :ensure nil ; it is built-in
    :hook (after-init . savehist-mode))

#+END_SRC

* Development
** Magit
#+BEGIN_SRC emacs-lisp
  (use-package transient)
  (use-package magit
    :bind (("C-x g" . magit-status))
    :custom
    (magit-display-buffer-function #'magit-display-buffer-same-window-except-diff-v1))
#+END_SRC
** Projectile
#+BEGIN_SRC emacs-lisp
  (use-package projectile  
    :init
    (projectile-mode t)
    :bind (:map projectile-mode-map
		("C-c p" . projectile-command-map)))
#+END_SRC

** Extra Modes
#+BEGIN_SRC emacs-lisp
  (use-package markdown-mode
    :mode ("\\.md\\'" . markdown-mode))

  (use-package cmake-mode)
  (use-package cmake-font-lock)

  (use-package glsl-mode)

#+END_SRC

** yasnippet
#+BEGIN_SRC emacs-lisp
  (use-package yasnippet
    :config
    (yas-global-mode t)
    :diminish yas-minor-mode)

  (use-package yasnippet-snippets)

#+END_SRC

** LSP
#+BEGIN_SRC emacs-lisp

    (use-package lsp-mode
      :commands (lsp lsp-deferred)
      :init
      (setq lsp-keymap-prefix "C-c l"
	    lsp-headerline-breadcrumb-enable nil
	    lsp-lens-enable nil
	    lsp-completion-enable-additional-text-edit nil)
      (defun my/lsp-mode-setup-completion ()
	(setf (alist-get 'styles (alist-get 'lsp-capf completion-category-defaults))
	      '(orderless))) ;; Configure orderless
      :hook ((lsp-completion-mode . my/lsp-mode-setup-completion)
	     (c-mode . lsp-deferred)
	     (c++-mode . lsp-deferred)
	     (python-mode . lsp-deferred)
	     (csharp-mode . lsp-deferred))

      :custom
      (lsp-completion-provider :none) ; corfu
      (lsp-idle-delay 0.05)
    
      )

    (use-package lsp-ui
      :hook (lsp-mode . lsp-ui-mode)
      :bind (
	     ("C-c r" . lsp-ui-peek-find-references)
	     ("C-c d" . lsp-ui-peek-find-definitions) 
	     ))


#+END_SRC

** Flycheck
#+BEGIN_SRC emacs-lisp
    (use-package flycheck
    :config
    (add-hook 'after-init-hook #'global-flycheck-mode))
#+END_SRC

** Corfu
#+BEGIN_SRC emacs-lisp
  (use-package corfu
    :ensure t
    :custom
    (corfu-cycle t)
    (corfu-auto t)
    (corfu-auto-prefix 2)
    (corfu-auto-delay 0.05)
    (corfu-popupinfo-delay '(0.2 . 0.1))
    (corfu-preview-current 'insert)
    (corfu-preselect 'first)
    (corfu-on-exact-match nil)
    :bind (:map corfu-map
		("C-g" . corfu-quit))
    :init
    (global-corfu-mode)
    (corfu-history-mode)
    (corfu-popupinfo-mode))

  (defun corfu-lsp-setup ()
    (setq-local completion-styles '(orderless)
		completion-category-defaults nil))
  (add-hook 'lsp-completion-mode-hook #'corfu-lsp-setup)
#+END_SRC

** C Mode Hook
#+BEGIN_SRC emacs-lisp

    (defun my-c-mode-common-hook ()
      ;; my customizations for all of c-mode, c++-mode, objc-mode, java-mode
      (setq c-default-style "k&r"
	    c-basic-offset 4
	    tab-width 4
	    indent-tabs-mode t
	    backward-delete-char-untabify-method "hungry")
      (c-set-offset 'arglist-intro '+)
      (add-to-list 'c-offsets-alist '(arglist-close . c-lineup-close-paren)))
    (add-hook 'c-mode-common-hook 'my-c-mode-common-hook)

#+END_SRC

** LSP Booster
#+BEGIN_SRC emacs-lisp
  (defun lsp-booster--advice-json-parse (old-fn &rest args)
    "Try to parse bytecode instead of json."
    (or
     (when (equal (following-char) ?#)
       (let ((bytecode (read (current-buffer))))
	 (when (byte-code-function-p bytecode)
	   (funcall bytecode))))
     (apply old-fn args)))
  (advice-add (if (progn (require 'json)
			 (fboundp 'json-parse-buffer))
		  'json-parse-buffer
		'json-read)
	      :around
	      #'lsp-booster--advice-json-parse)

  (defun lsp-booster--advice-final-command (old-fn cmd &optional test?)
    "Prepend emacs-lsp-booster command to lsp CMD."
    (let ((orig-result (funcall old-fn cmd test?)))
      (if (and (not test?)                             ;; for check lsp-server-present?
	       (not (file-remote-p default-directory)) ;; see lsp-resolve-final-command, it would add extra shell wrapper
	       lsp-use-plists
	       (not (functionp 'json-rpc-connection))  ;; native json-rpc
	       (executable-find "emacs-lsp-booster"))
	  (progn
	    (when-let ((command-from-exec-path (executable-find (car orig-result))))  ;; resolve command from exec-path (in case not found in $PATH)
	      (setcar orig-result command-from-exec-path))
	    (message "Using emacs-lsp-booster for %s!" orig-result)
	    (cons "emacs-lsp-booster" orig-result))
	orig-result)))
  (advice-add 'lsp-resolve-final-command :around #'lsp-booster--advice-final-command)
#+END_SRC
** Keybinds
#+BEGIN_SRC emacs-lisp
  (global-set-key (kbd "C-c e") 'consult-flymake)
  (global-set-key (kbd "C-c f") 'ff-find-other-file)

#+END_SRC