(require 'package)
(setq package-user-dir "~/.emacs.d/var/elpa")

(setq package-archives
      (append package-archives
              '(("melpa" . "https://melpa.milkbox.net/packages/"))))

(package-initialize)
(setq package-enable-at-startup nil)

(unless package-archive-contents
  (message "Refreshing ELPA package archives...")
  (package-refresh-contents))

(defvar package-list)
(setq package-list
      '(
        ag
        ansible
        ansible-doc
        counsel
        exec-path-from-shell
        flycheck
        flycheck-pos-tip
        flyspell
        geiser
        go-eldoc
        go-mode
        helm
        magit
        markdown-mode
        material-theme
        projectile
        puppet-mode
        swiper
        thrift
        ))

;; Install any missing packages
(dolist (package package-list)
  (unless (package-installed-p package)
    (package-install package)))

;; alias yes-or-no to y-or-n
(fset 'yes-or-no-p 'y-or-n-p)

;; set utf-8 as the default encoding
(prefer-coding-system 'utf-8-unix)

;; reload the buffer when a file changes
(global-auto-revert-mode 1)

(setq
 auto-save-default nil
 auto-save-list-file-prefix nil
 make-backup-files nil
 require-final-newline t
 vc-follow-symlinks t
 next-screen-context-lines 5
 tab-always-indent 'complete)

;; turn off indent tabs
(setq-default indent-tabs-mode nil)

;; nice font
(set-face-attribute 'default nil :font "Source Code Pro" :height 130)
(set-background-color "#FFFFD3")
(set-face-attribute 'fringe nil :background "#FFFFD3")
(set-face-background 'mode-line "#D8E6F3")

;; no menu
(menu-bar-mode -1)

;; show parenthesis
(show-paren-mode +1)

;; disable colors
(global-font-lock-mode -1)

;; no startup screen
(setq inhibit-startup-message t)
(setq initial-scratch-message "")

;; no blink cursor
(blink-cursor-mode -1)

;; show the column number in the mode-line
(setq column-number-mode t)

(when window-system
  (tool-bar-mode 0)    ;;hide tool-bar
  (scroll-bar-mode 0)  ;;hide scroll-bar
  (menu-bar-mode -1))  ;;hide menu-bar

;; no frindge on the right
(fringe-mode '(4 . 0))

;; auto close bracket insertion
(electric-pair-mode 1)

;; if running in macos, load environment variables
(when (memq window-system '(mac ns x))
  (exec-path-from-shell-initialize)
  (exec-path-from-shell-copy-envs '("TMPDIR")))

;; use dired and set default switches
(require 'dired)
(setq dired-listing-switches "-laGhv")

;; configure default path to save recent files
(require 'recentf)
(setq recentf-save-file "~/.emacs.d/var/recentf")

;; swiper
(require 'swiper)
(setq ivy-use-virtual-buffers t)
(global-set-key  (kbd "C-s") 'swiper)
(ivy-mode)

;; counsel
(require 'counsel)
(setq counsel-find-file-at-point t)

;; helm
(require 'helm)

;; interface to ag (the silver surfer)
(require 'ag)

;; projectile (great for project management!)
(require 'projectile)
(setq projectile-enable-caching t)
(setq projectile-completion-system 'ivy)
(setq projectile-known-projects-file "~/.emacs.d/var/projectile-bookmarks.eld")
(setq projectile-cache-file "~/.emacs.d/var/projectile.cache")
(projectile-global-mode)

;; check my spelling, it can only help
(require 'flyspell)
(setq ispell-program-name "aspell"
      ispell-list-command "--list")
(add-hook 'prog-mode-hook 'flyspell-prog-mode)
(add-hook 'text-mode-hook 'turn-on-flyspell)
(add-hook 'org-mode-hook 'turn-on-flyspell)

;; this makes emacs slow to work with source
(delete 'Git vc-handled-backends)

;; magit!
(require 'magit)
(setq magit-completing-read-function 'ivy-completing-read
      magit-item-highlight-face 'bold)
(global-set-key (kbd "C-x g") 'magit-status)

;; run magit in full screen
;; http://www.lunaryorn.com/2016/04/28/fullscreen-magit-status.html
(add-to-list 'display-buffer-alist
             `(,(rx "*magit: ")
               (fcuny/display-buffer-fullframe)
               (reusable-frames . nil)))

(defun fcuny/display-buffer-fullframe (buffer alist)
  "Display BUFFER in fullscreen.

ALIST is a `display-buffer' ALIST.

Return the new window for BUFFER."
  (let ((window (display-buffer-pop-up-window buffer alist)))
    (when window
      (delete-other-windows window))
    window))

;; pants related stuff
(load-file "~/src/pants.el/pants.el")
(require 'pants)
(setq pants-source-tree-root "/Users/fcuny/src/source"
      pants-bury-compilation-buffer t)
(global-set-key (kbd "C-c b") 'pants-find-build-file)
(global-set-key (kbd "C-c r") 'pants-run-binary)
(global-set-key (kbd "C-c t") 'pants-run-test)

;; validate the syntax on the fly
(require 'flycheck)
(defun check-source-predicate ()
  (and (executable-find "check.pex")
       (buffer-file-name)
       (string-match "src/source/.*\.py$" (buffer-file-name))))

(add-hook 'prog-mode-hook 'flycheck-mode)
(setq-default flycheck-disabled-checkers '(emacs-lisp-checkdoc))

(setq flycheck-mode-line
      '(:eval
        (pcase flycheck-last-status-change
          (`not-checked nil)
          (`no-checker (propertize " -" 'face 'warning))
          (`running "")
          (`errored (propertize " ✘" 'face 'error))
          (`finished
           (if flycheck-current-errors
               (let* ((error-counts (flycheck-count-errors flycheck-current-errors))
                      (no-errors (cdr (assq 'error error-counts)))
                      (no-warnings (cdr (assq 'warning error-counts)))
                      (flycheck-face (cond (no-errors 'error)
                                           (no-warnings 'warning))))
                 (propertize (format " [✗:%s/%s]" (or no-errors 0) (or no-warnings 0)) 'face flycheck-face))
             (propertize " [✓]" 'face 'success)))
          (`interrupted " -")
          (`suspicious '(propertize " ?" 'face 'warning)))))

(flycheck-define-checker source-check
  "A syntax checker for python source code in Source, using `check.pex'"
  :command ("check.pex" source)
  ;;; errors are reported like this:
  ;;; E241:ERROR   <file name>:<line> <message>
  :error-patterns ((error line-start (id (1+ nonl)) ":ERROR" (1+ nonl) ":" line (message) line-end)
                   (warning line-start (id (1+ nonl)) ":WARNING" (1+ nonl) ":" line (message) line-end))
  :predicate check-source-predicate
  :modes (python-mode))
(add-to-list 'flycheck-checkers 'source-check)

(require 'flycheck-pos-tip)
(eval-after-load 'feature-flycheck
  '(setq-default flycheck-display-errors-function #'flycheck-pos-tip-error-messages))

;; configuration for ansible
(require 'ansible)
(require 'ansible-doc)

;; configuration for puppet
(when (memq window-system '(mac ns x))
    (dolist (var '("GEM_HOME" "MY_RUBY_HOME"))
      (unless (getenv var)
        (exec-path-from-shell-copy-env var))))

(setq flycheck-puppet-lint-rc "/Users/fcuny/src/twitter-ops/utilities/puppet/.puppet-lint.rc")

(require 'puppet-mode)
(add-hook 'puppet-mode-hook 'flycheck-mode)

;; configuration for thrift
(require 'thrift)

;; configuration for yaml
(require 'yaml-mode)

;; configuration for go
(when (memq window-system '(mac ns x))
    (dolist (var '("GOPATH" "GO15VENDOREXPERIMENT"))
      (unless (getenv var)
        (exec-path-from-shell-copy-env var))))

(require 'go-mode)
(add-hook 'go-mode-hook (lambda ()
                          (go-eldoc-setup)
                          (add-hook 'before-save-hook 'gofmt-before-save)))

    ;; (bind-key "C-c C-f" 'gofmt go-mode-map)
    ;; (bind-key "C-c h" 'godoc go-mode-map)

    ;; (bind-key "C-c C-g" 'go-goto-imports go-mode-map)
    ;; (bind-key "C-c C-r" 'go-remove-unused-imports go-mode-map))

(require 'go-eldoc)
(add-hook 'go-mode-hook 'go-eldoc-setup)

;; configuration for markdown
(require 'markdown-mode)
(let ((preferred-markdown-impl "peg-markdown"))
  (when (executable-find preferred-markdown-impl)
    (setq markdown-command preferred-markdown-impl)))

;; configuration for python
(require 'python)
(setq python-indent-offset 2)

;; (use-package python
  ;; :mode ("BUILD\\|\\(\\.\\(py\\|aurora\\)\\)$" . python-mode)


;; configuration for racket
(require 'geiser)
(setq geiser-active-implementations '(racket))

;; configuration for shell
(setq-default
 sh-basic-offset 2
 sh-indentation 2)

;; some bindings
(global-set-key (kbd "M-j") 'join-line)
(global-set-key (kbd "C-x C-b") 'ibuffer)
(global-set-key (kbd "<s-return>") 'toggle-frame-fullscreen)
(global-set-key (kbd "C-c s") 'fc/visit-term-buffer)
(global-set-key (kbd "s-N") 'fc/switch-to-scratch)
(define-key emacs-lisp-mode-map (kbd "C-c C-e") 'eval-buffer)

;; custom functions
(defun fc/switch-to-scratch ()
  "Switch to scratch, grab the region if it's active."
  (interactive)
  (let ((contents
         (and (region-active-p)
              (buffer-substring (region-beginning)
                                (region-end)))))
    (switch-to-buffer "*scratch*")
    (if contents
        (progn
          (goto-char (buffer-end 1))
          (insert contents)))))

(defun fc/rename-this-buffer-and-file ()
  "Renames current buffer and file it is visiting."
  (interactive)
  (let ((name (buffer-name))
        (filename (buffer-file-name))
        (read-file-name-function 'read-file-name-default))
    (if (not (and filename (file-exists-p filename)))
        (error "Buffer '%s' is not visiting a file!" name)
      (let ((new-name (read-file-name "New name: " filename)))
        (cond ((get-buffer new-name)
               (error "A buffer named '%s' already exists!" new-name))
              (t
               (rename-file filename new-name 1)
               (rename-buffer new-name)
               (set-visited-file-name new-name)
               (set-buffer-modified-p nil)
               (message "File '%s' successfully renamed to '%s'" name (file-name-nondirectory new-name))))))))

;; start the server if not already running
(require 'server)
(unless (server-running-p)
  (server-start))