;;; rss.el --- RSS feed reading via elfeed -*- lexical-binding: t -*-

;; This file is not part of GNU Emacs

;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.


;;; Commentary:

;; commentary

;;; Code:

;; Elfeed and aggregation setup
(use-package elfeed
  :config
  (setq elfeed-feeds
	'(;; Planet aggregators
	  ("https://planet.emacslife.com/atom.xml" planet emacs))))

;; This fixes a bug
(define-advice elfeed-search--header (:around (oldfun &rest args))
  (if elfeed-db
      (apply oldfun args)
    "No database loaded yet"))

;; Display the elfeed entry buffer in the main window
(setq elfeed-show-entry-switch #'elfeed-display-buffer)

(defun elfeed-display-buffer (buf &optional act)
  (pop-to-buffer buf)
  (delete-other-main-windows))

;; Navigate elfeed entry from the search window
(defun elfeed-search-show-entry-pre (&optional lines)
  "Returns a function to scroll forward or back in the Elfeed
  search results, displaying entries without switching to them."
  (lambda (times)
    (interactive "p")
    (forward-line (* times (or lines 0)))
    (recenter)
    (call-interactively #'elfeed-search-show-entry)
    (select-window (previous-window))
    (unless elfeed-search-remain-on-entry (forward-line -1))))

(define-key elfeed-search-mode-map (kbd "n") (elfeed-search-show-entry-pre +1))
(define-key elfeed-search-mode-map (kbd "p") (elfeed-search-show-entry-pre -1))
(define-key elfeed-search-mode-map (kbd "M-RET") (elfeed-search-show-entry-pre))

(add-to-list 'display-buffer-alist
             '("\\*elfeed-search\\*"
               (display-buffer-in-side-window)
               (side . top)
               (slot . 0)))

(provide 'rss)

;;; rss.el ends here