;; See early-init.el for further package stuff
(require 'package)
(setq package-archives
      '(("melpa-stable" . "https://stable.melpa.org/packages/")
	("melpa-unstable" . "https://melpa.org/packages/")
	("gnu" . "https://elpa.gnu.org/packages/"))
      ;; Use melpa-unstable only when explicitly requested
      package-archive-priorities '(("melpa-stable" . 1)
				   ("gnu" . 1)))
(package-initialize)

(unless (package-installed-p 'use-package)
  (package-refresh-contents)
  (package-install 'use-package))
(require 'use-package)
(setq use-package-always-ensure t
      use-package-verbose t
      use-package-always-defer t)

(let ((--backup-directory (locate-user-emacs-file "backups")))
  (unless (file-exists-p --backup-directory)
    (make-directory --backup-directory t))
  (setq backup-directory-alist `(("." . ,--backup-directory))))
(setq make-backup-files t               ; backup of a file the first time it is saved.
      backup-by-copying t               ; don't clobber symlinks
      version-control t                 ; version numbers for backup files
      delete-old-versions t             ; delete excess backup files silently
      delete-by-moving-to-trash t
      kept-old-versions 6               ; oldest versions to keep when a new numbered backup is made (default: 2)
      kept-new-versions 9               ; newest versions to keep when a new numbered backup is made (default: 2)
      auto-save-default t               ; auto-save every buffer that visits a file
      auto-save-timeout 20              ; number of seconds idle time before auto-save (default: 30)
      auto-save-interval 200            ; number of keystrokes between auto-saves (default: 300)
      )
(defun qsx-backup-enable-predicate (name)
  (let ((directory
	 (file-name-directory (file-truename (expand-file-name name))))
	(auto-save-list-directory
         (file-truename
          (expand-file-name
           (file-name-as-directory
            (locate-user-emacs-file "auto-save-list"))))))
    (if (string= directory auto-save-list-directory)
	nil
      (normal-backup-enable-predicate name))))
(setq backup-enable-predicate #'qsx-backup-enable-predicate)

(let ((default-directory (locate-user-emacs-file "elisp")))
  (normal-top-level-add-to-load-path '("."))
  (normal-top-level-add-subdirs-to-load-path))

(load "server")
(unless (server-running-p) (server-start))

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

(use-package modus-themes
  :defer nil
  :config
  (load-theme 'modus-vivendi-tinted))

(setq display-time-day-and-date t
      display-time-24hr-format t)
(display-time-mode)
(display-battery-mode)

(when (eq system-type 'darwin)
    (use-package exec-path-from-shell
      :ensure t
      :init (exec-path-from-shell-initialize))
    (setenv "LANG" "de_DE.UTF-8"))

(use-package yasnippet)

(use-package company
  :bind (:map company-mode-map
	      ([remap completion-at-point] . #'company-complete))
  :config
  (setq company-tooltip-align-annotations t)
  :hook ((company-mode . yas-minor-mode)
         (prog-mode . company-mode)))

(use-package company-math
  :config
  (add-hook 'TeX-mode-hook (defun qsx-TeX-mode-hook-company ()
			     (setq-local company-backends
					 (append '((company-math-symbols-latex company-latex-commands))
						 company-backends)))))
(use-package company-auctex
  :if (display-graphic-p)
  :ensure nil
  :config (company-auctex-init))
(use-package company-bibtex
  :if (display-graphic-p)
  :config (add-to-list 'company-backends 'company-bibtex))
(use-package company-reftex
  :if (display-graphic-p)
  :config (add-to-list 'company-backends 'company-reftex))
(use-package company-ansible
  :config (add-to-list 'company-backends 'company-ansible))
(use-package company-shell
  :config (add-to-list 'company-backends '(company-shell company-shell-env)))

(semantic-mode 1)
(use-package srefactor
  :bind (:map c-mode-map
	      ("M-RET" . #'srefactor-refactor-at-point))
  :after project)

(use-package python
  :ensure nil
  :hook ((python-mode python-ts-mode) . lsp))
(use-package pet
  :init
  (add-hook 'python-base-mode-hook 'pet-mode -10)
  (add-hook
   'python-base-mode-hook
   (defun qsx-python-pet-hook ()
     (setq-local lsp-pylsp-server-command (list (pet-executable-find "pylsp"))))))

(use-package highlight-indentation
  :hook python-base-mode)

(use-package jinja2-mode
  :mode "\\.html.j2\\'"
  :config (keymap-unset jinja2-mode-map "M-o"))

(defun qsx-no-indent-tabs-mode ()
  (setq indent-tabs-mode nil))

(use-package cperl-mode
  :ensure nil
  :init
  (add-to-list 'major-mode-remap-alist '(perl-mode . cperl-mode))
  (add-hook 'cperl-mode-hook #'qsx-no-indent-tabs-mode))

(use-package flymake-perlcritic
  :pin melpa-unstable                   ; Last release in 2012
  :config
  (dolist (h '(flymake-mode
               flymake-perlcritic-setup))
    (add-hook 'cperl-mode-hook h))
  (setq flymake-perlcritic-severity 1))

(use-package treesit-auto
  :demand t
  :custom
  (treesit-auto-install 'prompt)
  :config
  (setq treesit-auto-langs
        (seq-difference treesit-auto-langs
                        '(c cpp go gomod yaml php jsdoc phpdoc)))
  (treesit-auto-add-to-auto-mode-alist 'all)
  (global-treesit-auto-mode))

(setq
 treesit-language-source-alist
 (append treesit-language-source-alist
         '((astro "https://github.com/virchau13/tree-sitter-astro")
           (css "https://github.com/tree-sitter/tree-sitter-css")
           (tsx "https://github.com/tree-sitter/tree-sitter-typescript" "master" "tsx/src"))))

(use-package astro-ts-mode
  :mode "\\.astro\\'"
  :config (keymap-unset astro-ts-mode-map "M-o"))

(use-package editorconfig
  :defer nil
  :config
  (editorconfig-mode 1))

(use-package tide
  :after (company flycheck)
  :hook ((typescript-ts-mode . tide-setup)
         (tsx-ts-mode . tide-setup)
         (typescript-ts-mode . tide-hl-identifier-mode)))

(use-package lsp-mode
  :pin melpa-unstable
  :commands lsp
  :bind-keymap ("s-l" . lsp-command-map)
  ;; https://emacs-lsp.github.io/lsp-mode/page/performance/
  :init
  (setq read-process-output-max (* 1024 1024) ;; 1 MiB
	gc-cons-threshold 6400000
        lsp-clients-clangd-args '("--header-insertion=never"))
  :config
  (add-to-list 'lsp-language-id-configuration '(LaTeX-mode . "latex"))

  ;; ugly hack to add #'LaTeX-mode
  ;; TODO: ⛔ Error (use-package): lsp-mode/:config: Symbol’s value as variable is void: lsp-clients-digestif-executable
  (with-eval-after-load 'lsp-tex
    (lsp-register-client
     (make-lsp-client :new-connection (lsp-stdio-connection lsp-clients-digestif-executable)
                      :major-modes '(plain-tex-mode latex-mode context-mode texinfo-mode LaTeX-mode)
                      :priority (if (eq lsp-tex-server 'digestif) 1 -1)
                      :server-id 'digestif))))
(use-package lsp-ui
  :commands lsp-ui-mode)
(use-package helm-lsp
  :commands helm-lsp-workspace-symbol)

(use-package mercurial
  :ensure nil
  :bind-keymap ("C-c H" . hg-global-map))

(use-package magit
  :defer 10)
(use-package magit-gh
  :ensure t
  :after magit)

(use-package info-nav)

(use-package elsqlite)

(use-package transpose-frame
  :init
  (dolist (i '(("j" . transpose-frame)
               ("i" . flip-frame)
               ("o" . flop-frame)
               ("r" . rotate-frame)
               ("c" . rotate-frame-clockwise)
               ("C" . rotate-frame-anticlockwise)))
    (dolist (p '("s-j " "s-j s-"))
      (bind-key
       (concat p (car i))
       (cdr i)))))

(use-package ace-window
  :bind ("M-o" . ace-window)
  :config (setq aw-scope 'frame))

(use-package mhtml-mode
  :ensure nil
  :config (keymap-unset html-mode-map "M-o"))

(use-package avy
  :bind (("C-." . avy-goto-char-timer)
	 ("C-:" . avy-goto-char-2)
	 ("C-," . avy-goto-line))
  :custom (avy-keys '(?c ?t ?i ?e ?n ?r ?s ?g)))

(use-package helm
  :demand t
  :bind-keymap ("C-c h" . helm-command-map)
  :bind (("M-x" . #'helm-M-x)
	 ("s-x" . #'execute-extended-command)
	 ("M-y" . #'helm-show-kill-ring)
	 ("C-x b" . #'helm-mini)
	 ("C-x C-f" . #'helm-find-files)
	 ("C-h SPC" . #'helm-all-mark-rings)
	 :map helm-command-map
	 ("o" . #'helm-occur))
  :config
  (helm-mode 1)
  (helm-autoresize-mode t)
  (setq helm-split-window-inside-p t
	;; helm-split-window-default-side 'other
	helm-M-x-fuzzy-match t
	helm-buffers-fuzzy-matching t
	helm-recentf-fuzzy-match t
	helm-ff-file-name-history-use-recentf t
	helm-echo-input-in-header-line t))
(use-package helm-rg
  :after helm)

(use-package form-feed)

(use-package vdirel
  :bind (:map message-mode-map
              ("C-c TAB" . vdirel-helm-select-email)))

(use-package apache-mode)

(use-package meson-mode)

(use-package systemd)

(setq-default display-line-numbers 'relative)

(use-package stripe-buffer
  :init
  (defun qsx-stripe-listify-buffer-hook ()
    (stripe-listify-buffer))
  (dolist (h '(gnus-group-mode-hook
	       gnus-summary-mode-hook
	       package-menu-mode-hook))
    (add-hook h #'qsx-stripe-listify-buffer-hook)))

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

(show-paren-mode 1)

(use-package ansible)
(use-package poly-ansible)

(use-package yaml-mode
  :config
  (add-hook 'yaml-mode-hook
	    (defun qsx-yaml-hl-indent-mode-hook ()
	      (highlight-indentation-mode)
	      (highlight-indentation-set-offset yaml-indent-offset)))
  (add-hook 'yaml-mode-hook #'qsx-no-indent-tabs-mode))

(defun qsx-disable-show-trailing-whitespace ()
  (setq show-trailing-whitespace nil))

(add-hook 'Info-mode-hook #'qsx-disable-show-trailing-whitespace)

(use-package k8s-mode
  :hook (k8s-mode . yas-minor-mode))
(use-package kubedoc
  :hook ((kubedoc-mode . qsx-dont-show-line-numbers-hook)
         (kubedoc-mode . qsx-disable-show-trailing-whitespace)))

(use-package elisp-mode
  :ensure nil
  :config
  (add-hook 'emacs-lisp-mode-hook #'qsx-no-indent-tabs-mode)
  (add-hook 'lisp-data-mode-hook #'qsx-no-indent-tabs-mode))

(use-package macrostep
  :bind (:map emacs-lisp-mode-map
              ("C-c e" . macrostep-expand)))

(use-package dockerfile-mode)

(defun qsx-dont-show-line-numbers-hook ()
  (setq display-line-numbers nil))

(dolist (h '(Man-mode-hook
	     eshell-mode-hook
	     ledger-report-mode-hook
             special-mode-hook))
  (add-hook h #'qsx-dont-show-line-numbers-hook))

(use-package pdf-tools
  :if (and
       (display-graphic-p)
       (not (eq system-type 'darwin)))
  :config
  (pdf-tools-install)
  (setq-default pdf-view-display-size 'fit-page)
  (add-hook 'pdf-view-mode-hook #'qsx-dont-show-line-numbers-hook))

(setq-default show-trailing-whitespace t)

(setq require-final-newline 'ask)

(add-to-list 'auto-mode-alist '("/mutt" . mail-mode))
(add-to-list 'auto-mode-alist '("/neomutt" . mail-mode))
(add-hook 'mail-mode-hook #'turn-on-auto-fill)
(add-hook 'mail-mode-hook #'mail-text)

(defun qsx-enable-TeX-fold-mode ()
  (TeX-fold-mode 1))

(use-package tex
  :if (display-graphic-p)
  :ensure nil
  :config
  (setq TeX-auto-save nil
	TeX-parse-self t
	;; TeX-fold-mode
	font-latex-fontify-sectioning 'color
	font-latex-fontify-script 'multi-level
	fill-column 80)
  (dolist (f '(qsx-enable-TeX-fold-mode
	       turn-on-auto-fill
               TeX-source-correlate-mode))
    (add-hook 'TeX-mode-hook f))
  (TeX-add-symbols
   '("cref" TeX-arg-ref)
   '("Cref" TeX-arg-ref)
   '("cpageref" TeX-arg-ref)
   '("Cpageref" TeX-arg-ref))
  (TeX-ispell-skip-setcar
   '(("\\\\[cC]ref" ispell-tex-arg-end 1)
     ("\\\\cite" ispell-tex-arg-end)
     ("\\\\iac" ispell-tex-arg-end)
     ("\\\\\\(text\\)?tt" ispell-tex-arg-end))))

(use-package reftex
  :if (display-graphic-p)
  :after (tex)
  :hook (TeX-mode . reftex-mode)
  :config
  (setq reftex-plug-into-AUCTeX t)
  (add-hook 'TeX-mode-hook #'reftex-mode)
  (TeX-add-style-hook
   "cleveref"
   (lambda ()
     (if (boundp 'reftex-ref-style-alist)
         (add-to-list
	  'reftex-ref-style-alist
	  '("Cleveref" "cleveref"
            (("\\cref" ?c) ("\\Cref" ?C) ("\\cpageref" ?d) ("\\Cpageref" ?D)))))
     (reftex-ref-style-activate "Cleveref"))))

(use-package auctex-latexmk
  :if (display-graphic-p)
  :ensure nil
  :config
  (auctex-latexmk-setup)
  (setq TeX-command-default "LatexMk"))

(use-package go-mode
  :hook (go-mode . lsp))

(use-package toml-mode)

(use-package rust-ts-mode
  :ensure nil
  :hook (rust-ts-mode . lsp))
;; Add keybindings for interacting with Cargo
(use-package cargo
  :hook ((rust-mode rust-ts-mode) . cargo-minor-mode))

(setq c-default-style "linux")

(setq tramp-default-method "ssh"
      tramp-terminal-type "tramp")

(setq column-number-mode t)

(global-set-key (kbd "C-x C-k") #'kill-current-buffer)
(global-set-key (kbd "C-M-y") #'(lambda ()
				  (interactive)
				  (insert (gui-get-primary-selection))))

(use-package org
  :ensure nil
  :init
  (require 'org-loaddefs)
  :config
  (add-hook 'org-mode-hook #'turn-on-auto-fill)
  (setq org-list-allow-alphabetical t)
  (org-babel-do-load-languages
   'org-babel-load-languages
   '((emacs-lisp . t)
     (dot . t)
     (sqlite . t)
     (plantuml . t)))
  (add-to-list
   'org-latex-packages-alist
   '("AUTO" "polyglossia" t ("xelatex" "lualatex")))
  (add-to-list
   'org-latex-packages-alist
   '("AUTO" "babel" t ("pdflatex")))
  (add-to-list
   'org-latex-packages-alist
   '("" "booktabs" nil))
  (with-eval-after-load 'ox-latex
    (add-to-list
     'org-latex-classes
     '("scrartcl"
       "\\documentclass{scrartcl}"
       ("\\section{%s}" . "\\section*{%s}")
       ("\\subsection{%s}" . "\\subsection*{%s}")
       ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
       ("\\paragraph{%s}" . "\\paragraph*{%s}")
       ("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
    (setq org-latex-default-class "scrartcl")))

(setq-default fill-column 80)

(add-hook 'text-mode-hook #'turn-on-auto-fill)

(use-package json-mode)

(use-package adoc-mode)

(use-package dpkg-dev-el
  ;; In Debian, it’s provided by a debian package, no need to install from MELPA
  :if (not (file-exists-p "/etc/debian_version")))

(use-package haskell-mode)

(use-package ledger-mode
  :pin melpa-unstable                   ; Last release 4.0.0 is incompatible
  :config
  (setq ledger-default-date-format "%Y-%m-%d"
	ledger-use-iso-dates t))

;; Use keypad comma as decimal separator
(use-package calc
  :config
  (define-key calc-digit-map (kbd "<kp-separator>") "."))

(use-package gnuplot
  :mode ("\\.gp\\'" . gnuplot-mode)
  :hook ((gnuplot-comint-mode .  qsx-disable-show-trailing-whitespace)))

;; RP PIO
(progn
  (define-hostmode poly-pio-hostmode
    :mode 'asm-mode)
  (define-innermode poly-pio-c-innermode
    :mode 'c-mode
    :head-matcher "^% c-sdk {$"
    :tail-matcher "^%}$"
    :head-mode 'host
    :tail-mode 'host)
  (define-polymode poly-pio-mode
    :hostmode 'poly-pio-hostmode
    :innermodes '(poly-pio-c-innermode))
  (add-to-list 'auto-mode-alist '("\\.pio\\'" . poly-pio-mode)))

(use-package arduino-mode)
(use-package arduino-cli-mode)

;;; Mail
(use-package gnus
  :defer t
  :config
  (setq
   message-kill-buffer-on-exit t
   message-sendmail-envelope-from 'header
   message-send-mail-function 'message-send-mail-with-sendmail
   message-elide-ellipsis "[…]"
   message-forward-as-mime t
   ;; message-alternative-emails
   message-confirm-send t
   mail-user-agent 'gnus-user-agent
   read-mail-command 'gnus
   gnus-gcc-mark-as-read t
   gnus-user-date-format-alist `((,(gnus-seconds-today) . "          T%H:%M:%S")
				 (,(gnus-seconds-month) . "        %dT%H:%M:%S")
				 (,(gnus-seconds-year)  . "     %m-%dT%H:%M:%S")
				 (t                     .   "%Y-%m-%dT%H:%M:%S"))
   gnus-summary-line-format "%U%R %&user-date; %(%[%5k: %-23,23f%]%)%B%s\n"
   gnus-sum-thread-tree-single-indent "  "
   gnus-sorted-header-list '("^From:" "^Organization:" "^Sender:" "^To:" "^Newsgroups:" "^.?Cc:" "^Subject:" "^Date:" "^Resent-.*:" "^Reply-To:" "^Followup-To:" "^X-Clacks-Overhead:" "Openpgp:" "^Authentication-Results:" "^Message-ID:")
   gnus-visible-headers "^From:\\|^Newsgroups:\\|^Subject:\\|^Date:\\|^Followup-To:\\|^Reply-To:\\|^Organization:\\|^Summary:\\|^Keywords:\\|^To:\\|^[BGF]?Cc:\\|^Posted-To:\\|^Mail-Copies-To:\\|^Mail-Followup-To:\\|^Apparently-To:\\|^Gnus-Warning:\\|^Resent-From:\\|^Message-ID:\\|^Authentication-Results:\\|^Sender:\\|^Resent-.*:\\|^X-Clacks-Overhead:\\|^Openpgp:\\|^User-Agent:\\|X-Mailer:\\|^List-Id:\\|^X-Spam-Score:"
   mm-verify-option 'known
   mml-secure-smime-encrypt-to-self t
   mml-secure-smime-sign-with-sender t
   gnus-buttonized-mime-types '("multipart/signed")
   smime-CA-directory "/etc/ssl/certs"
   gnus-select-method '(nntp "news.cis.dfn.de"
			     (nntp-open-connection-function nntp-open-ssl-stream)
			     (nntp-port-number 563)))
  (let ((maildir (cl-find-if #'file-directory-p
			     (mapcar (lambda (x) (concat (getenv "HOME") x))
				     '("/.nnmaildir"
				       "/.maildir"
				       "/Maildir"))))
	(notmuch (let ((notmuch-gnus (concat (getenv "HOME") "/.local/bin/notmuch-gnus")))
		   (if (file-executable-p notmuch-gnus)
		       notmuch-gnus
		     "notmuch")))
	(notmuch-database-path (car (process-lines "notmuch" "config" "get" "database.path"))))
    (setq
     gnus-secondary-select-methods
     `((nnmaildir
	"mail"
	(directory ,maildir)
	(gnus-search-engine gnus-search-notmuch
			    (program ,notmuch)
			    (remove-prefix ,(concat notmuch-database-path "/")))))))
  (add-hook 'message-setup-hook (defun qsx-message-add-my-headers ()
				  (message-add-header "Openpgp: id=E384009D3B54DCD321BF953295EE94A432583DB1; url=https://keys.openpgp.org/vks/v1/by-fingerprint/E384009D3B54DCD321BF953295EE94A432583DB1; preference=signencrypt"))))

(use-package gnus-alias
  :ensure t
  :bind (:map message-mode-map
              ("C-c i" . #'gnus-alias-select-identity))
  :config
  (setq gnus-alias-identity-alist
	'(("Chaotikum"
	   nil
	   "Thomas Schneider <qsx@chaotikum.eu>"
	   nil
	   (("Gcc" . "nnmaildir+mail:Chaotikum.Sent"))
	   nil
	   nil)
	  ("RWTH"
	   "Chaotikum"
	   "Thomas Schneider <thomas.schneider@informatik.rwth-aachen.de>"
	   "RWTH Aachen"
	   nil
	   nil
	   nil)
	  ("FSMPI"
	   nil
	   "Thomas Schneider <thomas@fsmpi.rwth-aachen.de>"
	   "Fachschaft I/1 der RWTH Aachen"
	   (("Gcc" . "nnmaildir+mail:FSMPI.Sent"))
	   nil
	   "~/.signature-fsmpi")
	  ("AStA"
	   nil
	   "Thomas Schneider <tschneider@asta.rwth-aachen.de>"
	   "AStA der RWTH Aachen"
	   (("Gcc" . "nnmaildir+mail:AStA.Sent"))
	   nil
	   "~/.signature-asta")
	  ("Automata"
	   nil
	   "Thomas Schneider <schneider@automata.rwth-aachen.de>"
	   "Lehrstuhl für Informatik 7, RWTH Aachen"
	   (("Gcc" . "\"nnmaildir+mail:Automata.Sent Items\""))
	   nil
	   "~/.signature-automata")
	  ("CCCAC"
	   nil
	   "qsx <qsx@aachen.ccc.de>"
	   nil
	   (("Gcc" . "nnmaildir+mail:CCCAC.Sent"))
	   nil
	   nil))
	gnus-alias-default-identity "Chaotikum"
	gnus-alias-identity-rules
	'(("FSMPI" ("from" "fsmpi" both) "FSMPI")
	  ("AStA" ("from" "asta" both) "AStA")
	  ("Automata" ("from" "automata" both) "Automata")
	  ("RWTH" ("from" "rwth-aachen" both) "RWTH")
	  ("CCCAC" ("from" "aachen\.ccc\.de" both) "CCCAC")))
  (add-hook 'message-setup-hook #'gnus-alias-determine-identity))