;;; funcs.el --- Javascript Layer functions File for Spacemacs
;;
;; Copyright (c) 2012-2017 Sylvain Benner & Contributors
;;
;; Author: Muneeb Shaikh <muneeb@reversehack.in>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;;; License: GPLv3


;; js-doc

(defun spacemacs/js-doc-require ()
  "Lazy load js-doc"
  (require 'js-doc))
(add-hook 'js2-mode-hook 'spacemacs/js-doc-require)

(defun spacemacs/js-doc-set-key-bindings (mode)
  "Setup the key bindings for `js2-doc' for the given MODE."
  (spacemacs/declare-prefix-for-mode mode "mrd" "documentation")
  (spacemacs/set-leader-keys-for-major-mode mode
    "rdb" 'js-doc-insert-file-doc
    "rdf" (if (configuration-layer/package-used-p 'yasnippet)
              'js-doc-insert-function-doc-snippet
            'js-doc-insert-function-doc)
    "rdt" 'js-doc-insert-tag
    "rdh" 'js-doc-describe-tag))

;; js-refactor

(defun spacemacs/js2-refactor-require ()
  "Lazy load js2-refactor"
  (require 'js2-refactor))


;; coffee

(defun javascript/coffee-indent ()
  (if (coffee-line-wants-indent)
      ;; We need to insert an additional tab because
      ;; the last line was special.
      (coffee-insert-spaces (+ (coffee-previous-indent) coffee-tab-width))
    ;; otherwise keep at the same indentation level
    (coffee-insert-spaces (coffee-previous-indent))))


;; skewer

(defun spacemacs/skewer-start-repl ()
  "Attach a browser to Emacs and start a skewer REPL."
  (interactive)
  (run-skewer)
  (skewer-repl))

(defun spacemacs/skewer-load-buffer-and-focus ()
  "Execute whole buffer in browser and switch to REPL in insert state."
  (interactive)
  (skewer-load-buffer)
  (skewer-repl)
  (evil-insert-state))

(defun spacemacs/skewer-eval-defun-and-focus ()
  "Execute function at point in browser and switch to REPL in insert state."
  (interactive)
  (skewer-eval-defun)
  (skewer-repl)
  (evil-insert-state))

(defun spacemacs/skewer-eval-region (beg end)
  "Execute the region as JavaScript code in the attached browser."
  (interactive "r")
  (skewer-eval (buffer-substring beg end) #'skewer-post-minibuffer))

(defun spacemacs/skewer-eval-region-and-focus (beg end)
  "Execute the region in browser and swith to REPL in insert state."
  (interactive "r")
  (spacemacs/skewer-eval-region beg end)
  (skewer-repl)
  (evil-insert-state))


;; tern

(defun spacemacs//set-tern-key-bindings (mode)
  "Set the key bindings for tern and the given MODE."
  (add-to-list (intern (format "spacemacs-jump-handlers-%S" mode))
            '(tern-find-definition :async t))
  (spacemacs/set-leader-keys-for-major-mode mode
    "rrV" 'tern-rename-variable
    "hd" 'tern-get-docs
    "gG" 'tern-find-definition-by-name
    (kbd "C-g") 'tern-pop-find-definition
    "ht" 'tern-get-type))

(defun spacemacs//tern-detect ()
  "Detect tern binary and warn if not found."
  (let ((found (executable-find "tern")))
    (unless found
      (spacemacs-buffer/warning "tern binary not found!"))
    found))