;; Initialise the package system first of all.
(require 'package)
(add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/") t)

(defvar fcuny-path-emacs-var (expand-file-name "var" user-emacs-directory)
  "Path to some files for Emacs.")

(defvar fcuny-path-emacs-elpa (expand-file-name "elpa" fcuny-path-emacs-var)
  "Path to elpa's local files.")

;; where to store the packages
(setq package-user-dir fcuny-path-emacs-elpa)

;; initialize it
(package-initialize)

;; if use-package is not present, we install it
(unless (package-installed-p 'use-package)
  (package-refresh-contents)
  (package-install 'use-package))

(require 'use-package)

(defvar fcuny-path-home (getenv "HOME")
  "Path to the user's home directory.")

(defvar fcuny-projects-ignored-dirs '(".git" ".svn" "target" "elpa")
  "Ignore the following directories when browsing with projectile.")

(defvar fcuny-bookmarks-dir (expand-file-name "bookmarks" fcuny-path-emacs-var)
  "Path to save the bookmarks")

(defvar fcuny-custom-settings (expand-file-name "emacs-custom.el" fcuny-path-emacs-var)
  "Path to emacs custom variables.")

(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))))))))

(defun fc/check-work-machine-p ()
  "Returns t if this is a work machine"
  (string-match "tw-mbp.*" (system-name)))

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

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

(setq auto-save-default nil)                   ;; don't auto save files
(setq auto-save-list-file-prefix nil)          ;; no backups
(setq create-lockfiles nil)                    ;; don't use a lock file
(setq custom-file fcuny-custom-settings)       ;; where to save custom settings
(setq make-backup-files nil)                   ;; really no backups
(setq minibuffer-message-timeout 0.5)          ;; How long to display an echo-area message
(setq next-screen-context-lines 5)             ;; scroll 5 lines at a time
(setq require-final-newline t)                 ;; ensure newline exists at the end of the file
(setq ring-bell-function 'ignore)              ;; really no bell
(setq tab-always-indent 'complete)             ;; when using TAB, always indent
(setq visible-bell nil)                        ;; no bell
(setq column-number-mode t)                    ;; show column number in the mode line
(setq use-package-always-ensure t)             ;; always ensure packages are present
(setq-default indent-tabs-mode nil)            ;; turn off tab indentation
(setq-default cursor-type 'hbar)               ;; cursor is a horizontal bar

(set-face-attribute 'default nil :height 130 :weight 'normal :width 'normal)

(fringe-mode '(8 . 8))                         ;; size of the fringe

(global-set-key (kbd "M-j") 'join-line)                           ;; Remap join-line to M-j where it's easier to get to.
(global-set-key (kbd "<s-return>") 'toggle-frame-fullscreen)      ;; Shift-Return switch to full-screen

(custom-set-variables
 '(tool-bar-mode nil)
 '(scroll-bar-mode nil)
 '(use-file-dialog nil)
 '(use-dialog-box nil)
 '(blink-cursor-mode nil)
 '(inhibit-startup-screen t)
 '(inhibit-startup-message t)
 '(inhibit-startup-echo-area-message t))

;; when using darwin, I don't want to use the native fullscreen mode (it opens a new workspace)
(when (eq system-type 'darwin)
  (setq ns-use-native-fullscreen nil))

(use-package auto-package-update
  :custom
  (auto-package-update-delete-old-versions t)
  (auto-package-update-hide-results t)
  (auto-package-update-last-update-day-filename (expand-file-name "last-package-update-day" fcuny-path-emacs-var))
  :hook
  (after-init . auto-package-update-maybe))

(use-package bookmark
  :custom
  (bookmark-default-file fcuny-bookmarks-dir)
  (bookmark-save-flag 1))

(use-package midnight
  :config
  (midnight-mode t))

(use-package autorevert
  :config
  (setq global-auto-revert-non-file-buffers t)
  (setq auto-revert-verbose nil)
  (global-auto-revert-mode t))

(use-package recentf
  :config
  (setq recentf-save-file (expand-file-name "var/recentf" user-emacs-directory)))

(use-package server
  :if window-system
  :init
  (add-hook 'after-init-hook 'server-start))

(use-package hl-line
  :config
  (global-hl-line-mode t))

(use-package whitespace
  :custom
  (whitespace-style '(face trailing))
  (show-trailing-whitespace t)
  :hook (whitespace-mode))

(use-package ag
  :bind (:map ag-mode-map
              ("p" . compilation-previous-error)
              ("n" . compilation-next-error)
              ("N" . compilation-next-file)
              ("P" . compilation-previous-file))
  :custom
  (ag-highlight-search t)
  (ag-reuse-buffers t)
  (ag-reuse-window t))

(use-package dired
  :ensure nil
  :defer t
  :bind ("C-x C-d"  . dired)
  :init
  (setq-default dired-dwim-target t)
  (setq dired-recursive-deletes 'always)
  (setq dired-recursive-copies 'always)

  (let ((gls (executable-find "/opt/twitter/bin/gls")))
    (when gls (setq insert-directory-program gls))))

(use-package ibuffer
  :bind ("C-x C-b" . ibuffer))

(use-package ispell
  :config
  (when (executable-find "aspell")
    (setq ispell-program-name "aspell"
          ispell-list-command "--list")))

(use-package flyspell-correct)

(use-package flyspell
  :hook ((text-mode-hook . flyspell-mode)
         (prog-mode-hook . flyspell-prog-mode)))

(use-package exec-path-from-shell
  :if (memq window-system '(mac ns))
  :config
  (exec-path-from-shell-initialize)
  (if (fc/check-work-machine-p)
      (dolist (var '("GEM_HOME" "GEM_PATH" "MY_RUBY_HOME"))
        (unless (getenv var)
          (exec-path-from-shell-copy-env var)))))

(electric-pair-mode 1)

(use-package paren
  :custom
  (show-paren-delay 0)
  :config
  (show-paren-mode 1))

(use-package lisp-mode
  :ensure f
  :bind
  (("C-c C-e" . eval-buffer)
   ("C-c C-r" . eval-region)))

(use-package make-mode
  :ensure t
  :config
  (add-hook 'makefile-mode-hook (lambda () (setq-local tab-width 2))))

(use-package go-mode
  :ensure t
  :preface
  (defun fcuny/go-mode-setup ()
    (setq-default)
    (setq tab-width 2))
  :config
  (add-hook 'go-mode-hook #'fcuny/go-mode-setup))

(use-package python
  :mode (("\\.py$" . python-mode))
  :ensure t
  :commands python-mode
  :custom (python-indent-offset 2))

(use-package scala-mode :ensure t)

(use-package sh-script
  :mode ("bashrc" . sh-mode)
  :config
  (defun set-sh-mode-indent ()
    (setq sh-basic-offset 2
          sh-indentation 2))
  (add-hook 'sh-mode-hook 'set-sh-mode-indent)
  (add-hook 'after-save-hook 'executable-make-buffer-file-executable-if-script-p))

(use-package dockerfile-mode
  :ensure t)

(use-package puppet-mode
  :ensure t
  :mode ("\\.pp\\'" . puppet-mode))

(use-package yaml-mode
  :ensure t
  :after (flyspell)
  :mode (("\\.yml?\\'" . yaml-mode)
         ("\\.yaml?\\'" . yaml-mode))
  :hook ((yaml-mode . flyspell-prog-mode)))

(use-package json-mode
  :ensure t
  :after (flyspell)
  :custom
  (json-reformat:indent-width 2)
  (js-indent-level 2)
  :hook ((json-mode . flyspell-prog-mode))
  :init
  (if (fc/check-work-machine-p)
    (add-to-list 'auto-mode-alist '("\\.workflow$" . json-mode))))

(use-package thrift
  :ensure t
  :after (flyspell)
  :custom
  (thrift-indent-level 2)
  :hook ((thrift . flyspell-prog-mode)))

(use-package protobuf-mode
  :ensure t
  :after (flyspell)
  :hook ((protobuf-mode . flyspell-prog-mode)))