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;;; bookmark.el --- Saved files and directories on my filesystem -*- lexical-binding: t -*-

;; Author: William Carroll <wpcarro@gmail.com>
;; Version: 0.0.1
;; Package-Requires: ((emacs "24.3"))

;;; Commentary:
;; After enjoying and relying on Emacs's builtin `jump-to-register' command, I'd
;; like to recreate this functionality with a few extensions.
;;
;; Everything herein will mimmick my previous KBDs for `jump-to-register', which
;; were <leader>-j-<register-kbd>.  If the `bookmark-path' is a file, Emacs will
;; open a buffer with that file.  If the `bookmark-path' is a directory, Emacs
;; will open an ivy window searching that directory.

;;; Code:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Dependencies
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(require 'f)
(require 'buffer)
(require 'list)
(require 'string)
(require 'set)
(require 'constants)
(require 'general)
(require 'tvl)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Constants
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(cl-defstruct bookmark label path kbd)

(defun bookmark-handle-directory-dwim (path)
  "Open PATH as either a project directory or a regular directory."
  (with-temp-buffer
    (cd path)
    (call-interactively #'project-find-file)))

(defconst bookmark-handle-directory #'bookmark-handle-directory-dwim
  "Function to call when a bookmark points to a directory.")

(defconst bookmark-handle-file #'counsel-find-file-action
  "Function to call when a bookmark points to a file.")

(defconst bookmark-whitelist
  (list
   (make-bookmark :label "depot"
                  :path tvl-depot-path
                  :kbd "d"))
  "List of registered bookmarks.")

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; API
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defun bookmark-open (b)
  "Open bookmark, B, in a new buffer or an ivy minibuffer."
  (let ((path (bookmark-path b)))
    (cond
     ((f-directory? path)
      (funcall bookmark-handle-directory path))
     ((f-file? path)
      (funcall bookmark-handle-file path)))))


(defun bookmark-install-kbds ()
  "Install the keybindings defined herein."
  (->> bookmark-whitelist
       (list-map
        (lambda (b)
          (general-define-key
           :prefix "<SPC>"
           :states '(normal)
           (format "J%s" (bookmark-kbd b))
           (lambda () (interactive) (find-file (bookmark-path b)))
           (format "j%s" (bookmark-kbd b))
           ;; TODO: Consider `cl-labels' so `which-key' minibuffer is more
           ;; helpful.
           (lambda () (interactive) (bookmark-open b)))))))

(provide 'bookmark)
;;; bookmark.el ends here