;;; app/rss/autoload.el

;;;###autoload
(defun =rss ()
  "Activate (or switch to) `elfeed' in its workspace."
  (interactive)
  (call-interactively 'elfeed))

;;;###autoload
(defun +rss/quit ()
  (interactive)
  (doom-kill-matching-buffers "^\\*elfeed")
  (dolist (file +rss-elfeed-files)
    (when-let (buf (get-file-buffer (expand-file-name file +rss-org-dir)))
      (kill-buffer buf))))

;;;###autoload
(defun +rss|elfeed-wrap ()
  "Enhances an elfeed entry's readability by wrapping it to a width of
`fill-column' and centering it with `visual-fill-column-mode'."
  (let ((inhibit-read-only t)
        (inhibit-modification-hooks t))
    (setq-local truncate-lines nil)
    (setq-local shr-width 85)
    (set-buffer-modified-p nil)))

;;;###autoload
(defun +rss/delete-pane ()
  "Delete the *elfeed-entry* split pane."
  (interactive)
  (let* ((buff (get-buffer "*elfeed-entry*"))
         (window (get-buffer-window buff)))
    (kill-buffer buff)
    (delete-window window)))

;;;###autoload
(defun +rss-popup-pane (buf)
  "Display BUF in a popup."
  (doom-popup-buffer buf
    :align +rss-split-direction
    :size 0.75
    :select t
    :noesc t
    :autokill t))

;;;###autoload
(defun +rss/open (entry)
  "Display the currently selected item in a buffer."
  (interactive (list (elfeed-search-selected :ignore-region)))
  (when (elfeed-entry-p entry)
    (elfeed-untag entry 'unread)
    (elfeed-search-update-entry entry)
    (elfeed-show-entry entry)))

;;;###autoload
(defun +rss/next ()
  "Show the next item in the elfeed-search buffer."
  (interactive)
  (funcall elfeed-show-entry-delete)
  (with-current-buffer (elfeed-search-buffer)
    (forward-line)
    (call-interactively '+rss/open)))

;;;###autoload
(defun +rss/previous ()
  "Show the previous item in the elfeed-search buffer."
  (interactive)
  (funcall elfeed-show-entry-delete)
  (with-current-buffer (elfeed-search-buffer)
    (forward-line -1)
    (call-interactively '+rss/open)))

;;;###autoload
(defun +rss-dead-feeds (&optional years)
  "Return a list of feeds that haven't posted anything in YEARS."
  (let* ((years (or years 1.0))
         (living-feeds (make-hash-table :test 'equal))
         (seconds (* years 365.0 24 60 60))
         (threshold (- (float-time) seconds)))
    (with-elfeed-db-visit (entry feed)
      (let ((date (elfeed-entry-date entry)))
        (when (> date threshold)
          (setf (gethash (elfeed-feed-url feed) living-feeds) t))))
    (cl-loop for url in (elfeed-feed-list)
             unless (gethash url living-feeds)
             collect url)))