#+TITLE: Emacs configuration file
#+AUTHOR: Marc
#+BABEL: :cache yes
#+PROPERTY: header-args :tangle yes

* TODOS
  - Paket exec-path-from-shell, um PATH aus Linux auch in emacs zu haben
  - Smart mode line?
  - Theme
  - evil-collection or custom in init file?
  - Hydra
  - General
  - (defalias 'list-buffers 'ibuffer)  ;; change default to ibuffer
  - ido?
  - imenu-list
  - treemacs (for linux)
  - treemacs-evil?
  - treemacs-projectile
  - ace-window
  - windmove?
  - tramp (in linux)
  - visual-regexp
  - org configuration: paths
  - org custom agenda
  - org configuration: everything else
  - beancount configuration from config.org
  - CONTINUE TODO from config.org at Programming

* First start
  When pulling the repository the first time, an initial init.el needs to be setup. After start it will replace itself with the configuration from init.org

#+BEGIN_SRC emacs-lisp :tangle no
(require 'org')
(find-file (concat user-emacs-directory "init.org"))
(org-babel-tangle)
(load-file (concat user-emacs-directory "init.el"))
(byte-compile-file (concat user-emacs-directory "init.el"))
#+END_SRC

  This function updates init.el whenever changes in init.org are made. The update will be active after saving.

#+BEGIN_SRC emacs-lisp
  (defun me/tangle-init ()
    "If the current buffer is 'init.org',
  the code blocks are tangled, and the tangled file is compiled."
    (when (equal (buffer-file-name)
		 (expand-file-name (concat user-emacs-directory "init.org")))
      ;; avoid running hooks
      (let ((prog-mode-hook nil))
      (org-babel-tangle)
      (byte-compile-file (concat user-emacs-directory "init.el"))
      (load-file user-init-file))))
  (add-hook 'after-save-hook 'me/tangle-init)
#+END_SRC

#+BEGIN_SRC emacs-lisp
  (require 'package)

  ;; bug before emacs 26.3
  (when (version< emacs-version "26.3")
      (setq gnutls-algorithm-priority "NORMAL:-VERS-TLS1.3"))
  (add-to-list 'package-archives '("elpa" . "https://elpa.gnu.org/packages/") t)
  (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
  (add-to-list 'package-archives '("melpa-stable" . "https://stable.melpa.org/packages/") t)
  (add-to-list 'package-archives '("org" . "https://orgmode.org/elpa/") t)

  (package-initialize)
#+END_SRC

#+BEGIN_SRC emacs-lisp
  (unless (package-installed-p 'use-package)
    (package-refresh-contents)
    (package-install 'use-package))

  (setq use-package-verbose nil)

  (eval-when-compile
    (require 'use-package))
  (require 'bind-key)
  (use-package diminish
    :ensure t)
#+END_SRC

* Default settings
#+BEGIN_SRC emacs-lisp
  (defvar me/whoami
    (if (string-equal (system-name) "PMTS01")
	"work_remote"
      (if (string-equal (system-name) "laptop")
	  "home_laptop"
	(if (string-equal (system-name) "PMPCNEU08")
	    "work_local"
	  "home_desktop"))))
#+END_SRC

#+BEGIN_SRC emacs-lisp
  (defvar MY--PATH_USER_LOCAL  (expand-file-name "~/.emacs.d/user-local/"))
  (defvar MY--PATH_USER_GLOBAL (expand-file-name "~/.emacs.d/user-global/"))
  (defvar MY--PATH_ORG_FILES (expand-file-name "~/Archiv/Organisieren/"))
  (defvar MY--PATH_ORG_FILES_MOBILE (expand-file-name "~/Archiv/Organisieren/mobile/"))
  (defvar MY--PATH_ORG_JOURNAl (expand-file-name "~/Archiv/Organisieren/Journal/"))
  (setq bookmark-default-file (concat MY--PATH_USER_LOCAL "bookmarks"))
  (setq recentf-save-file (concat MY--PATH_USER_LOCAL "recentf"))
  (setq custom-file (concat MY--PATH_USER_LOCAL "custom.el"))  ;; don't spam init.e with saved customization settings
  (setq abbrev-file-name (concat MY--PATH_USER_GLOBAL "abbrev_defs"))
  (setq backup-directory-alist `((".*" . ,temporary-file-directory)))
  (setq auto-save-file-name-transforms `((".*" ,temporary-file-directory)))
  (setq save-abbrevs 'silently)  ;; don't bother me with asking for abbrev saving
  (setq-default create-lockfiles nil) ;; disable lock files, can cause trouble in e.g. lsp-mode
  (defalias 'yes-or-no-p 'y-or-n-p) ;; answer with y and n
  (setq custom-safe-themes t) ;; don't ask me if I want to load a theme
  (setq sentence-end-double-space nil) ;; don't coun two spaces after a period as the end of a sentence.
  (delete-selection-mode t)  ;; delete selected region when typing
  (save-place-mode 1)  ;; saves position in file when it's closed
  (setq save-place-forget-unreadable-files nil)  ;; checks if file is readable before saving position

  (setq locale-coding-system 'utf-8)
  (set-terminal-coding-system 'utf-8)
  (set-keyboard-coding-system 'utf-8)
  (set-selection-coding-system 'utf-8)
  (if (eq system-type 'windows-nt)
      (prefer-coding-system 'utf-8-dos)
    (prefer-coding-system 'utf-8))
  (blink-cursor-mode -1) ;; turn off blinking cursor
  (show-paren-mode t) ;; show other part of brackets
  (column-number-mode t)
  (setq uniquify-buffer-name-style 'forward)
  (setq-default indent-tabs-mode nil) ;; avoid tabs in place of multiple spaces (they look bad in tex)
  (setq-default indicate-empty-lines t)  ;; show empty lines
  (setq scroll-margin 5  ;; smooth scrolling
        scroll-conservatively 10000
        scroll-preserve-screen-position 1
        scroll-step 1)
  (global-hl-line-mode t) ;; highlight current line
  (menu-bar-mode 0)  ;; disable menu bar
  (tool-bar-mode 0)  ;; disable tool bar
  (scroll-bar-mode 0)  ;; disable scroll bar
#+END_SRC

Some windows specific stuff
#+BEGIN_SRC emacs-lisp
  (when (eq system-type 'windows-nt)
    (remove-hook 'find-file-hooks 'vc-refresh-state)
    (progn
      (setq gc-cons-threshold (* 511 1024 1024)
            gc-cons-percentage 0.5
            garbage-collection-messages t
            w32-pipe-read-delay 0
            w32-get-true-file-attributes nil)
      (run-with-idle-timer 5 t #'garbage-collect)))
#+END_SRC
* visuals
** Font
#+BEGIN_SRC emacs-lisp
  (if (string-equal system-type "gnu/linux")
      (set-face-font 'default "Hack-10"))
#+END_SRC

** line wrappings
#+BEGIN_SRC emacs-lisp
  (global-visual-line-mode)
  (diminish 'visual-line-mode)
  (use-package adaptive-wrap
    :ensure t
    :config
    (add-hook 'visual-line-mode-hook #'adaptive-wrap-prefix-mode))
  ;  :init
  ;  (when (fboundp 'adaptive-wrap-prefix-mode)
  ;    (defun my/activate-adaptive-wrap-prefix-mode ()
  ;      "Toggle `visual-line-mode' and `adaptive-wrap-prefix-mode' simultaneously."
  ;      (adaptive-wrap-prefix-mode (if visual-line-mode 1 -1)))
  ;    (add-hook 'visual-line-mode-hook 'my/activate-adaptive-wrap-prefix-mode)))
#+END_SRC
** line numbers
#+BEGIN_SRC emacs-lisp
  (use-package display-line-numbers
  :init
    (add-hook 'prog-mode-hook 'display-line-numbers-mode)
    (add-hook 'org-src-mode-hook 'display-line-numbers-mode)
  :config
  (setq-default display-line-numbers-type 'visual
  display-line-numbers-current-absolute t
  display-line-numbers-with 4
  display-line-numbers-widen t))
  ;  (add-hook 'emacs-lisp-mode-hook 'display-line-numbers-mode)
#+END_SRC
** misc
#+BEGIN_SRC emacs-lisp
  (use-package rainbow-mode
    :ensure t
    :diminish
    :hook ((org-mode
            emacs-lisp-mode) . rainbow-mode))
#+END_SRC
* undo
#+BEGIN_SRC emacs-lisp
(use-package undo-tree
:ensure t
:diminish undo-tree-mode
:init
(global-undo-tree-mode 1))
#+END_SRC
* imenu-list
   A minor mode to show imenu in a sidebar.
   Call imenu-list-smart-toggle.
   [[https://github.com/bmag/imenu-list][Source]]

#+BEGIN_SRC emacs-lisp
(use-package imenu-list
  :ensure t
  :config
  (setq imenu-list-focus-after-activation t
        imenu-list-auto-resize t
        imenu-list-position 'right)
  :bind
  (:map global-map
        ([f9]  . imenu-list-smart-toggle))
  )
#+END_SRC
* which-key
#+BEGIN_SRC emacs-lisp
  (use-package which-key
    :ensure t
    :diminish which-key-mode
    :config
    (which-key-mode)
    (which-key-setup-side-window-right-bottom)
    (which-key-setup-minibuffer)
    (setq which-key-idle-delay 0.5))
#+END_SRC

* Evil

#+BEGIN_SRC emacs-lisp
  (use-package evil
    :ensure t
    :defer .1 ;; don't block emacs when starting, load evil immediately after startup
    :config
    (evil-mode 1))
#+END_SRC
* orgmode
** org
#+BEGIN_SRC emacs-lisp
  (use-package org
    :ensure org-plus-contrib
    :init
    (add-hook 'org-mode-hook 'company/org-mode-hook)
    :config
;;    (require 'org-id)
    (add-to-list 'org-modules "org-id")
    (setq org-default-notes-file (concat MY--PATH_ORG_FILES "notes.org")
          org-agenda-files (list MY--PATH_ORG_FILES
                                 MY--PATH_ORG_FILES_MOBILE)
          org-id-locations-file (concat MY--PATH_USER_LOCAL ".org-id-locations")
          org-log-into-drawer "LOGBOOK"))
  (org-id-update-id-locations)
#+END_SRC
** habits
#+BEGIN_SRC emacs-lisp
  (require 'org-habit)  ;;TODO Lösung ohne require finden, scheint mir nicht ideal zu sein, nur um ein org-modul zu aktivieren
;;  (add-to-list 'org-modules "org-habit")
  (setq org-habit-graph-column 80
        org-habit-preceding-days 30
        org-habit-following-days 7
        org-habit-show-habits-only-for-today nil)
#+END_SRC
** *TODO*
org-super-agenda

** org-caldav
Vorerst deaktiviert, Nutzen evtl. nicht vorhanden
BEGIN_SRC emacs-lisp
  (use-package org-caldav
    :ensure t
    :config
    (setq org-caldav-url "https://nextcloud.cloudsphere.duckdns.org/remote.php/dav/calendars/marc"
          org-caldav-calendar-id "orgmode"
          org-caldav-inbox (expand-file-name "~/Archiv/Organisieren/caldav-inbox")
          org-caldav-files (concat MY--PATH_ORG_FILES "tasks")))
END_SRC
** journal
[[https://github.com/bastibe/org-journal][Source]]

#+BEGIN_SRC emacs-lisp
  (use-package org-journal
    :ensure t
    :defer t
    :custom
    (org-journal-dir MY--PATH_ORG_JOURNAl)
    (org-journal-enable-agenda-integration t))
#+END_SRC
* ivy / counsel / swiper

#+BEGIN_SRC emacs-lisp
;  (require 'ivy)
  (use-package ivy
    :ensure t
    :diminish
    (ivy-mode . "")
    :init
    (ivy-mode 1)
    :bind
    ("C-r" . ivy-resume)             ;; overrides isearch-backwards binding
    :config
    (setq ivy-use-virtual-buffers t  ;; recent files and bookmarks in ivy-switch-buffer
	  ivy-height 20              ;; height of ivy window
	  ivy-count-format "%d/%d"   ;; current and total number
	  ivy-re-builders-alist      ;; regex replaces spaces with *
	  '((t . ivy--regex-plus))))

  (use-package counsel
    :ensure t
    :bind*
    (("M-x" . counsel-M-x)
     ("C-x C-f" . counsel-find-file)
     ("C-x C-r" . counsel-recentf)
     ("C-c C-f" . counsel-git)
     ("C-c h f" . counsel-describe-function)
     ("C-c h v" . counsel-describe-variable)
     ("M-i" . counsel-imenu)))

  (use-package swiper
    :ensure t
    :bind
    ("C-s" . swiper))

(use-package ivy-hydra
:ensure t)
#+END_SRC

* company

#+BEGIN_SRC emacs-lisp
;  (require 'company)
  (use-package company
    :defer 1
    :bind
    (:map company-active-map
	  ("RET" . nil)
	  ([return] . nil)
	  ("TAB" . company-complete-selection)
	  ([tab] . company-complete-selection)
	  ("<right>" . company-complete-common))
    :config
    (global-company-mode 1)
    (setq-default
     company-idle-delay .2
     company-minimum-prefix-length 1
     company-require-match nil
     company-show-numbers t
     company-tooltip-align-annotations t))

;  (require 'company-statistics)
  (use-package company-statistics
    :ensure t
    :after company
    :init
    (setq company-statistics-file (concat MY--PATH_USER_LOCAL "company-statistics-cache.el"));~/.emacs.d/user-dir/company-statistics-cache.el")
    :config
    (company-statistics-mode 1))

  (use-package company-dabbrev
    :ensure nil
    :after company
    :config
    (setq-default company-dabbrev-downcase nil))

  (use-package company-box
    :ensure t
    :init
    (add-hook 'company-mode-hook 'company-box-mode))
#+END_SRC

** company backends

#+BEGIN_SRC emacs-lisp
    (defun company/org-mode-hook()
      (set (make-local-variable 'company-backends)
           '(company-capf company-files))
      (add-hook 'completion-at-point-functions 'pcomplete-completions-at-point nil t)
      (message "company/org-mode-hook"))

    (defun company/elisp-mode-hook()
      (set (make-local-variable 'company-backends)
           '((company-elisp company-dabbrev) company-capf company-files))
      (message "company/elisp-mode-hook"))

  (defun company/beancount-mode-hook()
    (set (make-local-variable 'company-backends)
         '(company-beancount)))
#+END_SRC

* Programming
** Magit / Git
Little crash course in magit:
- magit-init to init a git project
- magit-status (C-x g) to call the status window

In status buffer:
- s   stage files
- u   unstage files
- U   unstage all files
- a   apply changes to staging
- c c commit (type commit message, then C-c C-c to commit)
- b b switch to another branch
- P u git push
- F u git pull

#+BEGIN_SRC emacs-lisp
  (use-package magit
    :ensure t
    :defer t
    :init
    ; set git-path in work environment
    (if (string-equal user-login-name "POH")
      (setq magit-git-executable "P:/Eigene Dateien/Tools/Git/bin/git.exe")
    )
    :bind (("C-x g" . magit-status))
  )
#+END_SRC

** LSP
Configuration for the language server protocol
*ACHTUNG* Dateipfad muss absolut sein, symlink im Pfad führt zumindest beim ersten Start zu Fehlern beim lsp
Sobald der lsp einmal lief, kann zukünftig der symlink-Pfad genommen werden.
Getestet wurde die funktionierende Datei selbst und neu erstellte Dateien im selben Pfad.
TODO Unterverzeichnisse wurden noch nicht getestet

#+BEGIN_SRC emacs-lisp
  (use-package lsp-mode
    :defer t
    :commands lsp
    :custom
    (lsp-auto-guess-root nil)
    (lsp-prefer-flymake nil) ; use flycheck instead
    (lsp-file-watch-threshold 2000)
    :bind (:map lsp-mode-map ("C-c C-f" . lsp-format-buffer))
    :hook ((python-mode
            js-mode
            js2-mode
            typescript-mode
            web-mode) . lsp))

  (use-package lsp-ui
    :after lsp-mode
    :ensure t
    :diminish
    :commands lsp-ui-mode
    :config
    (setq lsp-ui-doc-enable t
          lsp-ui-doc-header t
          lsp-ui-doc-include-signature t
          lsp-ui-doc-position 'top
          lsp-ui-doc-border (face-foreground 'default)
          lsp-ui-sideline-enable nil
          lsp-ui-sideline-ignore-duplicate t
          lsp-ui-sideline-show-code-actions nil)
    (when (display-graphic-p)
      (setq lsp-ui-doc-use-webkit t))
    ;; workaround hide mode-line of lsp-ui-imenu buffer
    (defadvice lsp-ui-imenu (after hide-lsp-ui-imenu-mode-line activate)
      (setq mode-line-format nil)))

  (use-package company-lsp
    :requires company
    :defer t
    :ensure t
    :config
    ;;disable client-side cache because lsp server does a better job
    (setq company-transformers nil
          company-lsp-async t
          company-lsp-cache-candidates nil))
#+END_SRC

** flycheck
#+BEGIN_SRC emacs-lisp
  (use-package flycheck
    :ensure t
    :hook
    ((css-mode . flycheck-mode)
     (emacs-lisp-mode . flycheck-mode)
     (python-mode . flycheck-mode))
    :init
    (setq flycheck-emacs-lisp-load-path 'inherit)
    :config
    (setq-default
     flycheck-check-synta-automatically '(save mode-enabled)
     flycheck-disable-checkers '(emacs-lisp-checkdoc)
     eldoc-idle-delay .1                ;; let eldoc echo faster than flycheck
     flycheck-display-errors-delay .3)) ;; this way any errors will override eldoc messages
#+END_SRC

** Projectile
Manage projects and jump quickly between its files
#+BEGIN_SRC emacs-lisp
  (use-package projectile
    :ensure t
    :defer t
    :bind
    (("C-c p p" . projectile-switch-project)
     ("C-c p c" . projectile-command-map)
     ("C-c p s s" . projectile-ag))
    :init
    (setq-default projectile-cache-file (concat MY--PATH_USER_LOCAL ".projectile-cache")
                  projectile-known-projects-file (concat MY--PATH_USER_LOCAL ".projectile-bookmarks"))
    :config
    (projectile-mode t)
    (setq-default projectile-completion-system 'ivy
                  projectile-enable-caching t
                  projectile-mode-line '(:eval (projectile-project-name))))
#+END_SRC

** lisp
#+BEGIN_SRC emacs-lisp
  (add-hook 'emacs-lisp-mode-hook 'company/elisp-mode-hook)
#+END_SRC
** web

 apt install npm
 sudo npm install -g vscode-html-languageserver-bin
 evtl alternativ typescript-language-server?

 #+BEGIN_SRC emacs-lisp
   (use-package web-mode
     :ensure t
     :defer t
     :mode
     ("\\.phtml\\'"
      "\\.tpl\\.php\\'"
      "\\.djhtml\\'"
      "\\.[t]?html?\\'"))
 #+END_SRC

** Python
 Systemseitig muss python-language-server installiert sein:
 pip3 install 'python-language-server[all]'

 für andere language servers
 https://github.com/emacs-lsp/lsp-mode#install-language-server

 #+BEGIN_SRC emacs-lisp
   (if (string-equal system-type "gnu/linux")
       (use-package pyvenv
         :ensure t
         :config
         (setenv "WORKON_HOME" (expand-file-name "~/Archiv/Programmierprojekte/Python/virtualenv/"))
         (add-hook 'pyvenv-post-activate-hooks #'my/postactivatehook))
     (defun my/postactivatehook ()
       (setq lsp-python-ms-extra-paths pyvenv-virtual-env))

     (use-package virtualenvwrapper
       :ensure t
       :hook (venv-postmkvirtualenv . (lambda() (shell-command "pip3 install importmagic epc")))
       :config
       (setq venv-location (expand-file-name "~/Archiv/Programmierprojekte/Python/virtualenv/")))

     (use-package lsp-python-ms
       :ensure t
       :after lsp-mode python))
   ; :custom (lsp-python-executable-cmd "python3"))


 #+END_SRC
* beancount
** Installation
#+BEGIN_SRC shell
sudo su
cd /opt
python3 -m venv beancount
source ./beancount/bin/activate
pip3 install wheel
pip3 install beancount
sleep 100
echo "shell running!"
deactivate
#+END_SRC

#+BEGIN_SRC emacs-lisp
  (if (string-equal system-type "gnu/linux")
      (use-package beancount
        :load-path "user-local/elisp"
;        :ensure t
        :defer t
        :mode
        ("\\.beancount$" . beancount-mode)
        :init
        (add-hook 'beancount-mode-hook 'company/beancount-mode-hook)
  ;    (add-hook 'beancount-mode-hook (pyvenv-activate "/opt/beancount"))
    ;  (setenv "PATH"
    ;          (concat "/opt/beancount/bin:"
    ;                  (getenv "PATH")))
        :config
        (setq beancount-filename-main "/home/marc/Archiv/Finanzen/Transaktionen/transactions.beancount")))
#+END_SRC

To support org-babel, check if it can find the symlink to ob-beancount.el

#+BEGIN_SRC shell
  orgpath=`find /home/marc/.emacs.d/elpa/ -type d -name "org-plus*" -print`
  beansym="$orgpath/ob-beancount.el
  bean="/home/marc/Archiv/Programmierprojekte/Lisp/beancount-mode/ob-beancount.el"

  if [ -h "$beansym" ]
  then
    echo "$beansym found"
  elif [ -e "$bean" ]
  then
    echo "creating symlink"
    ln -s "$bean" "$beansym"
  else
    echo "$bean not found, symlink creation aborted"
  fi
#+END_SRC

Fava is strongly recommended.

#+BEGIN_SRC shell
cd /opt
python3 -m venv fava
source ./fava/bin/activate
pip3 install wheel
pip3 install fava
deactivate
#+END_SRC

Start fava with fava my_file.beancount

It is accessable on this URL: [[http://127.0.0.1:5000][Fava]]
Beancount-mode can start fava and open the URL right away.