;;; bandali-ibuffer.el --- bandali's Ibuffer setup   -*- lexical-binding: t; -*-

;; Copyright (C) 2018-2022  Amin Bandali

;; Author: Amin Bandali <bandali@gnu.org>
;; Keywords: tools

;; 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:

;; My Ibuffer setup.

;;; Code:

(setq
 ibuffer-saved-filter-groups
 '(("default"
    ("dired" (mode . dired-mode))
    ("org"   (mode . org-mode))
    ("gnus"
     (or
      (mode . gnus-group-mode)
      (mode . gnus-summary-mode)
      (mode . gnus-article-mode)
      (mode . message-mode)))
    ("web"
     (or
      (mode . mhtml-mode)
      (mode . css-mode)
      (mode . scss-mode)
      (mode . js2-mode)))
    ("shell"
     (or
      (mode . eshell-mode)
      (mode . shell-mode)
      (mode . term-mode)))
    ("programming"
     (or
      (mode . python-mode)
      (mode . c-mode)
      (mode . c++-mode)
      (mode . java-mode)
      (mode . emacs-lisp-mode)
      (mode . scheme-mode)
      (mode . haskell-mode)
      (mode . lean-mode)
      ;; (mode . go-mode)
      (mode . alloy-mode)))
    ("tex"
     (or
      (mode . bibtex-mode)
      (mode . latex-mode)))
    ("emacs"
     (or
      (name . "^\\*scratch\\*$")
      (name . "^\\*Messages\\*$")))
    ("exwm" (mode . exwm-mode))
    ("erc" (mode . erc-mode))))
 ibuffer-formats
 '((mark modified read-only locked " "
         (name 72 72 :left :elide)
         " "
         (size-h 9 -1 :right)
         " "
         (mode 16 16 :left :elide)
         " " filename-and-process)
   (mark " "
         (name 16 -1)
         " " filename)))
(with-eval-after-load 'ibuffer
  ;; Use human readable Size column instead of original one
  (define-ibuffer-column size-h
    (:name "Size" :inline t)
    (cond
     ((> (buffer-size) 1000000) (format "%7.1fM" (/ (buffer-size) 1000000.0)))
     ((> (buffer-size) 100000) (format "%7.0fk" (/ (buffer-size) 1000.0)))
     ((> (buffer-size) 1000) (format "%7.1fk" (/ (buffer-size) 1000.0)))
     (t (format "%8d" (buffer-size)))))

  ;; local key bindings
  (define-key ibuffer-mode-map (kbd "P")
    #'ibuffer-backward-filter-group)
  (define-key ibuffer-mode-map (kbd "N")
    #'ibuffer-forward-filter-group)
  (define-key ibuffer-mode-map (kbd "M-p")
    #'ibuffer-do-print)
  (define-key ibuffer-mode-map (kbd "M-n")
    #'ibuffer-do-shell-command-pipe-replace))
;; global key bindings
(global-set-key (kbd "C-x C-b") #'ibuffer)
;; hooks
(declare-function ibuffer-switch-to-saved-filter-groups "ibuf-ext"
                    (name))
(add-hook 'ibuffer-hook
          (lambda () (ibuffer-switch-to-saved-filter-groups "default")))

(provide 'bandali-ibuffer)
;;; bandali-ibuffer.el ends here