(require 'package)
(package-initialize)
(require 'cl)

(setq gc-cons-threshold (* 16 1024 1024))
(setq gc-cons-percentage 0.3)

;; Change all prompts to y or n
(fset 'yes-or-no-p 'y-or-n-p)

;; my prompt
(defun my/yes-or-whatever-p (prompt)
  (string= "yes"
		   (downcase
			(read-from-minibuffer
			 (concat prompt "(yes or whatever) ")))))
;; Ask if you want to quit emacs
(setq confirm-kill-emacs 'my/yes-or-whatever-p)

;; Nope function
(defun nope ()
  (interactive)
  (message "Nope!"))
(defun silence ()
  (interactive))

;; Helper function
(defun string-ends-with-p (string suffix)
  "Return t if STRING ends with SUFFIX."
  (and (string-match (rx-to-string `(: ,suffix eos) t)
					 string)
	   t))

;; Quote
(setq initial-scratch-message
      (concat ";; Simplicity and elegance are unpopular because\n"
              ";; they require hard work and discipline to achieve\n"
              ";; and education to be appreciated.\n"
              ";;\n"
              ";; - Dijkstra\n\n"))

;; Set frame title
(setq frame-title-format "%b (%m)")


;; Default frame size
(setq initial-frame-alist
      '(
        (width . 110)
        (height . 40)
        ))

;; Use cperl-mode instead of perl-mode
(defalias 'perl-mode 'cperl-mode)

;; Disable use of abbrev in cperl-mode (what the heck...)
(add-hook 'cperl-mode-hook
		  (lambda () (setq-local local-abbrev-table nil)))

;; Treat - as part of work in elisp
(add-hook 'emacs-lisp-mode-hook
		  (lambda () (modify-syntax-entry ?- "w")))

;; Enable backup
(setq make-backup-files t)
(setq
 version-control t
 backup-by-copying t
 backup-directory-alist '(("." . "~/.saves"))
 delete-old-versions t
 kept-new-versions 6
 kept-old-versions 2)

(setq-default grep-command
			  (concat
			   "grep "
			   "-rnH "
			   "--binary-files=without-match "
			   "--exclude-dir=.git "))

;; Scroll behaviour
(setq
 scroll-step 1
 scroll-margin 5
 scroll-conservatively 9999)

;; Auto-fill in text
(add-hook 'text-mode-hook 'turn-on-auto-fill)
(setq-default fill-column 80)

;; Allow "/" for search in package-menu
(define-key package-menu-mode-map (kbd "/") 'swiper)

(push '("melpa" . "http://melpa.milkbox.net/packages/") package-archives)

(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(ansi-color-faces-vector
   [default default default italic underline success warning error])
 '(ansi-color-names-vector
   ["#242424" "#e5786d" "#95e454" "#cae682" "#8ac6f2" "#333366" "#ccaa8f" "#f6f3e8"])
 '(blink-cursor-mode nil)
 '(cperl-close-paren-offset -2)
 '(cperl-electric-parens nil)
 '(cperl-electric-parens-mark nil)
 '(cperl-indent-level 2)
 '(cperl-indent-parens-as-block t)
 '(cperl-under-as-char t)
 '(custom-enabled-themes (quote (heroku)))
 '(custom-safe-themes
   (quote
	("4f2ede02b3324c2f788f4e0bad77f7ebc1874eff7971d2a2c9b9724a50fb3f65" default)))
 '(dired-listing-switches "-lh")
 '(inhibit-startup-screen t)
 '(package-selected-packages
   (quote
	(evil-indent-plus company delight evil-org org-bullets counsel powerline-evil powerline origami projectile terminal-here swiper neotree ivy heroku-theme use-package yasnippet evil-surround org evil-magit magit makefile-runner evil))))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(company-preview ((t (:foreground "black"))))
 '(company-preview-common ((t (:inherit company-preview))))
 '(company-preview-search ((t (:inherit company-preview))))
 '(company-scrollbar-bg ((t (:background "dim gray"))))
 '(company-scrollbar-fg ((t (:background "gray"))))
 '(company-template-field ((t (:foreground "dark orange"))))
 '(company-tooltip ((t (:background "dim gray" :foreground "black"))))
 '(company-tooltip-annotation ((t (:foreground "gray19"))))
 '(company-tooltip-common ((t (:inherit company-preview))))
 '(company-tooltip-selection ((t (:background "dark gray"))))
 '(ivy-current-match ((t (:foreground "gold"))))
 '(minibuffer-prompt ((t (:foreground "dark orange" :weight bold))))
 '(neo-dir-link-face ((t (:foreground "#fce94f"))))
 '(neo-expand-btn-face ((t (:foreground "#ffe070"))))
 '(neo-root-dir-face ((t (:foreground "#fff3c6" :weight bold))))
 '(org-ellipsis ((t (:foreground "LightGoldenrod"))))
 '(powerline-active1 ((t (:inherit mode-line))))
 '(powerline-active2 ((t (:inherit mode-line))))
 '(powerline-evil-emacs-face ((t (:inherit powerline-evil-base-face :background "gray30" :foreground "white"))))
 '(powerline-evil-insert-face ((t (:inherit powerline-evil-base-face :background "forest green"))))
 '(powerline-evil-motion-face ((t (:inherit powerline-evil-base-face :background "white" :foreground "black"))))
 '(powerline-evil-normal-face ((t (:inherit powerline-evil-base-face :background "white" :foreground "grey22"))))
 '(powerline-evil-replace-face ((t (:inherit powerline-evil-base-face :background "dark red")))))

;; Disable unnecessary UI
(when window-system
  (scroll-bar-mode -1)
  (tool-bar-mode -1))
(menu-bar-mode -1)

;; Buffer cleanup
(defun buffer-cleanup-whitespace ()
  "Remove trailing whitespaces upon save"
  (let ((whitespace-style '(empty trailing)))
	(whitespace-cleanup)))
(add-hook 'before-save-hook 'buffer-cleanup-whitespace)
(setq-default show-trailing-whitespace t)
;; Buffer Menu does trailing whitespace, don't show them
(add-hook 'buffer-menu-mode-hook
		  (lambda () (setq-local show-trailing-whitespace nil)))

;; ensure repo cache is up1date
(or (file-exists-p package-user-dir)
    (package-refresh-contents))

;; Install use-package
(defun ensure-package-installed (package)
  "Ensure packages are installed"
  (if (package-installed-p package)
      nil
    (progn
      (package-refresh-contents)
      (package-install package))))

(ensure-package-installed 'use-package)

;; *.tex files are Latex-Files
(add-to-list 'auto-mode-alist '("\\.tex\\'" . latex-mode))

;; Extra Latex keybindings
(defun my/latex-keybindings ()
  (define-key latex-mode-map (kbd "<f9>") 'recompile))
(add-hook 'latex-mode-hook 'my/latex-keybindings)

;; show parens
(show-paren-mode t)

;; highlight line
(global-hl-line-mode)

;; No tabs - tabs are evil
(setq-default indent-tabs-mode nil)

(use-package delight
  :ensure t
  :demand t)

(use-package let-alist
  :ensure t
  :demand t)

;; powerline
(use-package powerline
  :ensure t
  :demand t)

(use-package powerline-evil
  :ensure t
  :demand t
  :config
  (powerline-evil-vim-color-theme))

;; theme
(use-package heroku-theme
  :ensure t)

;; Open .org files in org directory
(defun my/counsel-org-agenda ()
  "Open .org files in org directory"
  (interactive)
  (find-file (concat (file-name-as-directory org-directory)
					 (ivy-read "Org files: "
							   (remove-if-not
								(lambda (e) (string-ends-with-p e ".org"))
								(directory-files org-directory))))))

;; Org-mode
(use-package org
  :ensure t
  :config
  (setq org-directory "~/org/")
  (setq org-agenda-files (concat org-directory "agenda"))
  (setq org-default-notes-file (concat org-directory "notes.org"))
  (global-set-key (kbd "C-c c") 'org-capture)
  (setq org-capture-templates
		'( ("t" "Todo" entry (file+headline org-default-notes-file "Todos")
			"* TODO %U %?\n  ")
		   ("f" "Fix me" entry (file+headline "~/org/fixmes.org" "Fixmes")
			"* TODO %?\n  %a\n  %i") ))
  (global-set-key (kbd "<f12>") 'my/counsel-org-agenda)
  (setq org-todo-keywords '((sequence "TODO" "WORK" "BLOC" "REVI" "|" "ABAN" "DONE")))
  (setq org-todo-keyword-faces
        '(("TODO" . "firebrick2")
          ("WORK" . "yellow")
          ("BLOC" . "orange red")
          ("REVI" . "dodger blue")
          ("ABAN" . "slate blue")
          ("DONE" . "green3")))
  (setq org-ellipsis " ▼")
  (dolist (face '(org-level-1
                  org-level-2
                  org-level-3
                  org-level-4
                  org-level-5))
    (set-face-attribute face nil :weight 'semi-bold :height 1.0))
  (dolist (kv '(("t" . "TODO")
                ("w" . "WORK")
                ("b" . "BLOC")
                ("r" . "REVI")
                ("a" . "ABAN")
                ("d" . "DONE")))
    (define-key org-mode-map (kbd (concat "C-c t " (car kv))) `(lambda () (interactive) (org-todo ,(cdr kv)))))
  (add-hook 'org-mode-hook
            (lambda ()
              (linum-mode 0)
              (setq-local line-spacing 0.2)
              (setq-local fill-column 80)
              (auto-fill-mode 1))))

;; Org Bullets
(use-package org-bullets
  :ensure t
  :after org
  :config
  (add-hook 'org-mode-hook
            (lambda () (org-bullets-mode 1))))

;; Evil-mode
(defun my/evil-go-back ()
  (interactive)
  (evil--jump-backward 1))

(defun my/evil-go-forward ()
  (interactive)
  (evil--jump-forward 1))

(defun my/kill-current-buffer ()
  (interactive)
  (kill-buffer (current-buffer)))

(defun my/kill-window-or-buffer ()
  "Closes current window if not last"
  (interactive)
  (if (one-window-p (selected-window))
	  (kill-buffer (current-buffer)) ;; If last window, just kill buffer
	(delete-window (selected-window)))) ;; else delete window

(defun my/swiper-thing-at-point (thing)
  (interactive)
  (swiper (format "\\<%s\\>"
				  (thing-at-point thing))))

(use-package evil
  :ensure t
  :demand t
  :config
  (evil-mode 1)
  (setq evil-ex-substitute-global t)
  (define-key evil-normal-state-map "/" 'swiper)
  (evil-ex-define-cmd "q" 'my/kill-window-or-buffer)
  (evil-ex-define-cmd "wq" (lambda ()
							 (interactive)
							 (save-buffer)
							 (my/kill-window-or-buffer)))
  (define-key evil-normal-state-map "gb" 'my/evil-go-back)
  (define-key evil-normal-state-map "gn" 'my/evil-go-forward)
  (define-key evil-motion-state-map [down-mouse-1] 'silence)
  (define-key evil-motion-state-map [mouse-1] 'silence)
  (define-key evil-insert-state-map (kbd "<up>") 'nope)
  (define-key evil-insert-state-map (kbd "<down>") 'nope)
  (define-key evil-insert-state-map (kbd "<left>") 'nope)
  (define-key evil-insert-state-map (kbd "<right>") 'nope)
  (define-key evil-normal-state-map (kbd "#")
	(lambda () (interactive) (my/swiper-thing-at-point 'word)))
  (define-key evil-normal-state-map (kbd "*")
	(lambda () (interactive) (my/swiper-thing-at-point 'symbol)))
  (setq-default evil-cross-lines t))

;; Evil-indent-textobject, but better
(use-package evil-indent-plus
  :ensure t
  :demand t
  :config
  (evil-indent-plus-default-bindings))

;; Evil-org
(use-package evil-org
  :ensure t
  :after org
  :delight
  :config
  (add-hook 'org-mode-hook 'evil-org-mode)
  (add-hook 'evil-org-mode-hook
            (lambda ()
              (evil-org-set-key-theme '(navigation insert shift todo heading)))))

(use-package evil-surround
  :ensure t
  :demand t
  :config
  (global-evil-surround-mode t))

(use-package projectile
  :ensure t
  :demand t
  :delight '(:eval (concat " Project[" (projectile-project-name) "]"))
  :config
  (projectile-global-mode t)
  (setq projectile-completion-system 'ivy))

;; Company mode
(use-package company
  :ensure t
  :demand t
  :delight
  :config
  (global-company-mode)
  (setq company-global-modes '(not git-commit-mode))
  (setq company-minimum-prefix-length 2)
  (setq company-idle-delay 0.5))

;; Auto-Complete
;;(use-package auto-complete
;;  :ensure t
;;  :demand t
;;  :delight
;;  :disabled
;;  :config
;;  (require 'auto-complete-config)
;;  (setq ac-ignore-case nil)
;;  (setq ac-sources '(ac-source-filename
;;                     ac-source-functions
;;                     ac-source-yasnippet
;;                     ac-source-variables
;;                     ac-source-symbols
;;                     ac-source-features
;;                     ac-source-words-in-all-buffer
;;                     ac-source-dictionary))
;;  (global-auto-complete-mode))

;; folding
;; (use-package origami
;;   :ensure t
;;   :demand t
;;   :config (progn
;;             (setq origami-show-fold-header t)
;;             (define-key evil-normal-state-map "z" 'origami-toggle-node)
;;             (global-origami-mode)))

;; ivy
(defun my/save-imenu-jump (item)
  "WIP: Tells evil-jump to save position before jumping via imenu (or counsel-imenu)"
  (evil--jumps-push))

(use-package ivy
  :ensure t
  :demand t
  :delight
  :config
  (ivy-mode 1)
  (setq ivy-use-virtual-buffers t)
  (setq ivy-count-format "(%d/%d) ")
  (advice-add 'imenu :before 'my/save-imenu-jump)
  (define-key ivy-minibuffer-map (kbd "<C-return>") 'ivy-immediate-done)
  (set-face-attribute 'ivy-current-match nil :foreground "gold"))

(use-package counsel
  :ensure t
  :demand t
  :config
  (global-set-key (kbd "C-c l") 'counsel-locate)
  (global-set-key (kbd "C-c m") 'counsel-imenu)
  (global-set-key (kbd "C-c _") 'counsel-git-grep))

;; Quickly open external terminal
(use-package terminal-here
  :ensure t
  :bind ("C-x t" . terminal-here-launch))

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

;; Neotree
(use-package neotree
  :ensure t
  :bind ("C-x n" . neotree-show)
  :config
  (setq neo-theme 'ascii)
  (evil-define-key 'normal neotree-mode-map (kbd "+") 'neotree-create-node)
  (evil-define-key 'normal neotree-mode-map (kbd "g") 'neotree-refresh)
  (evil-define-key 'normal neotree-mode-map (kbd "d") 'neotree-delete-node)
  (evil-define-key 'normal neotree-mode-map (kbd "c") 'neotree-rename-node)
  (evil-define-key 'normal neotree-mode-map (kbd "TAB") 'neotree-enter)
  (evil-define-key 'normal neotree-mode-map (kbd "RET") 'neotree-enter)
  (evil-define-key 'normal neotree-mode-map (kbd "q") 'neotree-hide)
  (evil-define-key 'normal neotree-mode-map (kbd "DEL") 'neotree-select-up-node))

;; Yasnippet
(use-package yasnippet
  :ensure t
  :demand t
  :delight yas-minor-mode
  :config (yas-global-mode 1))

;; avy - Disabled because it makes emacs laggy :(
;;(use-package avy
;;  :ensure t
;;  :demand t
;;  :bind ("C-c f" . avy-goto-line)
;;  :disabled
;;  :config
;;  (setq avy-keys '(?w ?a ?s ?d ?q ?e))
;;  (dolist (face avy-lead-faces)
;;    (set-face-attribute face nil :background "gray28" :foreground "light blue" :weight 'bold)))

;; Magit
(use-package magit
  :ensure t
  :bind ("C-x g" . magit-status)
  :config
  ;; Use insert mode in commit window
  (evil-set-initial-state 'git-commit-mode 'insert)
  ;; Magit fullscreen
  (defadvice magit-status (around magit-fullscreen activate)
	(window-configuration-to-register :magit-fullscreen)
	ad-do-it
	(delete-other-windows))
  (defun magit-quit-fullscreen ()
	(interactive)
	(kill-buffer)
	(jump-to-register :magit-fullscreen))
  (define-key magit-status-mode-map (kbd "q") 'magit-quit-fullscreen))

;; Undo-Tree
(use-package undo-tree
  :delight
  :config
  (global-undo-tree-mode)
  (add-hook 'global-undo-tree-mode-hook
			(lambda () (linum-mode -1))))

;; delight
(delight 'abbrev-mode)

;; tabbing
(setq-default tab-width 4)
(setq-default LateX-indent-level 4)
;; (add-hook 'latex-mode-hook
;;           (lambda () (setq indent-tabs-mode t)))

;; Activate line numbers
(global-linum-mode t)

;; compilation buffer
; Set buffer scrolling
(setq compilation-scroll-output 'first-error)
(setq compilation-window-height 10)

;(defun my/compilation-bury-buffer-without-error (buffer string)
;  (cond ((string-match "finished" string)
;        (message "Build maybe successful: closing window.")
;        (run-with-timer 3 nil
;                        'delete-window
;                        (get-buffer-window buffer t)))
;       (t (message "Compilation exited abnormaly: %s" string))))
;
;(setq compilation-finish-function 'my/compilation-bury-buffer-without-error)

;(defun my/setup-compilation-window ()
;  (when (not (get-buffer-window "*compilation*"))
;    (save-selected-window
;      (save-excursion
;        (let* ((w (split-window-vertically))
;               (h (window-height w)))
;          (select-window w)
;          (switch-to-buffer "*compilation*")
;          (shrink-window (- h compilation-window-height)))))))
;(add-hook 'compilation-mode-hook 'my/setup-compilation-window)

;; Move between windows
(global-set-key (kbd "C-x <up>") 'windmove-up)
(global-set-key (kbd "C-x <down>") 'windmove-down)
(global-set-key (kbd "C-x <left>") 'windmove-left)
(global-set-key (kbd "C-x <right>") 'windmove-right)

; Whitespace mode toggle
(global-set-key (kbd "C-x C-l") 'whitespace-mode)
(defalias 'wsm 'whitespace-mode)

(defun cycle-window ()
  "cycles windows"
  (interactive)
  (select-window (next-window)))

;; (defun check-for-open-buffers ()
;;   (interactive)
;;   (or (dolist
;;    (buffer (buffer-list))
;;     (cond
;;      ((string-match "^\\*.*\\*$" (buffer-name buffer))
;;       nil)
;;      ((null (buffer-modified-p buffer))
;;       nil)
;;      (t
;;       (yes-or-no-p (format "Buffer %s is open. Exit anyway?" (buffer-name buffer))))))))

;; Latex german
(quail-define-package "latex-german" "UTF-8" "LaGe" t
                      "Transforms umlauts to the better latex notation.
ä -> \"a
ö -> \"o
ü -> \"u
Ä -> \"A
Ö -> \"O
Ü -> \"U
ß -> \"s"
                      nil t nil nil nil nil nil nil nil nil t)
(quail-define-rules
 ("ä" ["\"a"])
 ("ö" ["\"o"])
 ("ü" ["\"u"])
 ("Ä" ["\"A"])
 ("Ö" ["\"O"])
 ("Ü" ["\"U"])
 ("ß" ["\"s"])
)

(add-hook 'latex-mode-hook (lambda ()
                (set-input-method "latex-german")
                (local-set-key "\"" 'self-insert-command)))

;; Treat _ as part of word in some modes
(defun treat-underscore ()
  (modify-syntax-entry ?_ "w"))
(add-hook 'prog-mode-hook 'treat-underscore)

;; Split windows horizontally preferred
(setq split-height-threshold 6)
(setq split-width-threshold 20)

;; Overlay windows (What does it do?)
(add-to-list 'display-buffer-alist
         '("*Apropos*" display-buffer-same-window))
(add-to-list 'display-buffer-alist
         '("*Help*" display-buffer-in-side-window))
(add-to-list 'display-buffer-alist
         '("*evil-jumps*" display-buffer-in-side-window))
(add-to-list 'display-buffer-alist
         '("*compilation*" (display-buffer-reuse-window display-buffer-in-side-window) (side . bottom) (size . 0.2)))
(add-to-list 'display-buffer-alist
			 '("*undo-tree*" (display-buffer-reuse-window display-buffer-in-side-window)
			   (side . right) (size . 0.2)))


;; Insert time, german format
(defun time-german ()
  (interactive)
  (insert (format-time-string "%H:%M")))

(global-set-key (kbd "C-c C-d") 'time-german)

;; Load local emacs settings
(let ((local-config (concat user-emacs-directory "init.local")))
  (when (file-exists-p (concat local-config ".el"))
    (load local-config)))