;;; FG42 --- The mighty editor for the emacsians -*- lexical-binding: t; -*-
;;
;; Copyright (c) 2010-2022 Sameer Rahmani <lxsameer@gnu.org>
;;
;; Author: Sameer Rahmani <lxsameer@gnu.org>
;; URL: https://devheroes.codes/FG42/FG42
;; Version: 3.0.0
;;
;; 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 <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;; Code:
(require 'fg42/modeline)
(require 'fg42/statusbar)


(defmacro fg42/percentage-face (value err warn)
  "Return the correct face with repect to VALUE and the given
thresholds ERR adn WARN"
  `(cond ((> ,value ,err) 'error) ((> ,value ,warn) 'warning) (t 'success)))

(defbar-unit fg42/statusbar-battery 30 "B--"
  (format "B%s"
          (string-trim
           (with-temp-buffer
             (insert-file-contents "/sys/class/power_supply/BAT0/capacity")
             (buffer-string)))))


(defbar-unit fg42/statusbar-memory 3 "M--S--"
  (let* ((struct (string-trim
                  (shell-command-to-string "free -k|tail -n 2|awk '{printf(\"%s,%s,\", $3, $2)}'")))
         (vals (mapcar #'cl-parse-integer (butlast (split-string struct ","))))
         ;; TODO: Check for division by zero
         (m (* 100  (/ (float(car vals)) (cadr vals))))
         ;; TODO: Check for division by zero
         (s (* 100  (/ (float(caddr vals)) (cadddr vals))))
         (x ))

    (format
     "M%sS%s"
     (propertize (format "%02d" m) 'face (fg42/percentage-face m 90 75))
     (propertize (format "%02d" s) 'face (fg42/percentage-face s 90 75)))))


(defface fg42/statusbar-project-face
  '((t :inherit font-lock-type-face :bold t))
  "Project name face on status bar"
  :group 'fg42/statusbar)

(defface fg42/statusbar-buffer-name-face
  '((t :inherit font-lock-variable-name-face))
  "Buffer name face on status line"
  :group 'fg42/statusbar)


(defun fg42/statusbar-project-name ()
  (when-flag projectile
    (projectile-project-name)))


(defun fg42/statusbar-buffer-and-project ()
  (format "%s:%s"
          (propertize (fg42/statusbar-project-name) 'face 'fg42/statusbar-project-face)
          (propertize (buffer-name) 'face 'fg42/statusbar-buffer-name-face)))

;; (defvar fg42/statusbar-git-branch "-")
;; (defvar fg42/statusbar--last-branch "-")


;; (defun fg42/statusbar-update-git-branch()
;;   (message "eeoeeeeee")
;;   (setq fg42/statusbar-git-branch
;;         (shell-command-to-string "git symbolic-ref --short HEAD")))

;; (defun fg42/statusbar-setup-git-branch-updater ()
;;   ;;(add-function :after after-focus-change-function #'fg42/statusbar-update-git-branch)

;; (add-hook 'window-configuration-change-hook (lambda () (message "window-configuration-change-hook")))
;; (add-hook 'window-state-change-hook (lambda () (message "window-state-change-hook")))

;;   (advice-add :after 'ace-select-window #'fg42/statusbar-update-git-branch)

;;   'fg42/statusbar-git-branch)


(defmode-line fg42/statusbar-default
  (list
   :brief (list
           ;;'(buffer-name)
           ;;'fg42/statusbar-battery

           "|"
           '(substring-no-properties (vc-mode vc-mode))
           "|"
           '(fg42/statusbar-buffer-and-project)
           "|"
           'fg42/statusbar-memory
           "|"
           '(format-mode-line "%03l:%02c")

           ;;'(format-time-string "%m-%d %H:%M")
           ;; (let ((bar (format "%s" fg42/statusbar-memory))) (add-text-properties 0 (string-width bar)  (cons 'face (cons '(:size 0.3) (or (get-text-property 0 'face bar) 'default-face))) bar)
           ;;     bar)
           )
   :long " ")
    ;; No GUI

  )
;; The default modeline for FG42 WM that is compatible with
;; the FG42's status bar only
(defmode-line fg42/statusbar-default-wm
  (progn
    ;; We are in the graphical world
    (require 'all-the-icons)
    ;;(format "%s|%s|%s|%s|%s")
    (list
     :brief (list
             ;;'(buffer-name)
             ;;'fg42/statusbar-battery

             'fg42/statusbar-memory
             '(format-mode-line "%03l:%02c")

             ;;'(format-time-string "%m-%d %H:%M")
             ;; (let ((bar (format "%s" fg42/statusbar-memory))) (add-text-properties 0 (string-width bar)  (cons 'face (cons '(:size 0.3) (or (get-text-property 0 'face bar) 'default-face))) bar)
              ;;     bar)
             )
     :long " "))
    ;; No GUI

  )


(provide 'fg42/modeline/statusbar-default)
;;; statusbar-default.el ends here