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

;;; Code:
(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))

(unless (package-installed-p 'use-package)
  (message "`use-package' not found.  Installing...")
  (package-install 'use-package))

(require 'use-package)
(setq use-package-minimum-reported-time 0
      use-package-verbose t)

;; 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 "#FFFFE4")
(set-face-attribute 'fringe nil :background "#FFFFE5")
(set-face-background 'mode-line "#E5FFFF")

;; 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
(set-fringe-mode 0)

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

;; if running in macos, load environment variables
(when (memq window-system '(mac ns x))
  (use-package exec-path-from-shell
    :ensure t
    :init (setq exec-path-from-shell-debug +1)
    :config
    (exec-path-from-shell-initialize)
    (exec-path-from-shell-copy-envs '("TMPDIR"))))

;; I want dired
(use-package dired
  :commands dired
  :init
  (setq dired-listing-switches "-laGhv"))

;; install recentf
(use-package recentf
  :config
  (setq recentf-save-file "~/.emacs.d/var/recentf"))

;; get counsel and swiper
(use-package swiper
  :ensure t
  :bind (("C-s"   . swiper))
  :config
  (setq ivy-use-virtual-buffers t)
  (ivy-mode))

(use-package counsel
  :ensure t
  :config
  (setq counsel-find-file-at-point t))

;; I need helm
(use-package helm
  :ensure t)

;; interface to ag
(use-package ag
  :ensure t
  :defer t)

;; get projectile
(use-package projectile
  :ensure t
  :init
  (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")
  :config
  (projectile-global-mode))

;; check my spelling, it can only help
(use-package flyspell
  :ensure t
  :init
  (progn
    (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)

(use-package magit
  :ensure t
  :bind ("C-x g" . magit-status)
  :config
  (progn
    (setq magit-completing-read-function 'ivy-completing-read)
    (setq magit-item-highlight-face 'bold)))

;; 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")

(use-package pants
  :bind (("C-c b" . pants-find-build-file)
         ("C-c r" . pants-run-binary)
         ("C-c t" . pants-run-test))
  :config
  (progn
    (setq pants-source-tree-root "/Users/fcuny/src/source"
          pants-bury-compilation-buffer t)))

;; validate the syntax on the fly
(use-package flycheck
  :ensure t
  :defer t
  :preface (progn
             (defun check-source-predicate ()
               (and (executable-find "check.pex")
                    (buffer-file-name)
                    (string-match "src/source/.*\.py$" (buffer-file-name)))))
  :init
  (progn
    (add-hook 'prog-mode-hook 'flycheck-mode)
    (setq-default flycheck-disabled-checkers '(emacs-lisp-checkdoc)))
  :config
  (progn
    (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)))))

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

    (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)))

(use-package flycheck-pos-tip
  :defer t
  :init
  (progn
    (eval-after-load 'feature-flycheck
      '(setq-default flycheck-display-errors-function #'flycheck-pos-tip-error-messages)))
  :ensure t)

;; configuration for ansible
(use-package ansible
  :ensure t)

(use-package ansible-doc
  :ensure t)

;; 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))))

(use-package puppet-mode
  :ensure t
  :mode ("\\.pp$" . puppet-mode)
  :init
  (progn
    (add-hook 'puppet-mode-hook 'flycheck-mode)))

;; configuration for thrift
(use-package thrift
  :ensure t
  :defer t)

;; configuration for yaml
(use-package yaml-mode
  :mode ("\\.\\(yml\\|yaml\\)\\'" . yaml-mode)
  :ensure t
  :defer t)

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

(use-package go-mode
  :ensure t
  :defer t
  :config
  (progn
    (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))
  :init
  (progn (add-hook 'go-mode-hook (lambda ()
                                   (go-eldoc-setup)
                                   (add-hook 'before-save-hook 'gofmt-before-save)))))

(use-package go-eldoc
  :ensure t
  :defer t
  :init (add-hook 'go-mode-hook 'go-eldoc-setup))

;; configuration for markdown
(use-package markdown-mode
  :ensure t
  :mode ("\\.\\(m\\(ark\\)?down\\|md\\)$" . markdown-mode)
  :config
  (progn
    (let ((preferred-markdown-impl "peg-markdown"))
      (when (executable-find preferred-markdown-impl)
        (setq markdown-command preferred-markdown-impl)))))

;; configuration for python
(use-package python
  :mode ("BUILD\\|\\(\\.\\(py\\|aurora\\)\\)$" . python-mode)
  :config
  (progn
    (setq python-indent-offset 2)))

;; configuration for racket
(use-package geiser
  :config
  (setq geiser-active-implementations '(racket))
  :ensure t)

;; 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
(use-package server
  :config
  (unless (server-running-p)
    (server-start)))