;;; thanos-commands.el --- custom commands/functions  -*- lexical-binding: t; -*-

;; Copyright (C) 2023  Thanos Apollo

;; Author: Thanos Apollo <public@thanosapollo.com>
;; Keywords: 

;; 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:
;; ╭━━━━┳╮╱╱╱╱╱╱╱╱╱╱╱╱╱╱╭━━━╮╱╱╱╱╱╭╮╭╮╱╱╱╱╱╱╱╱╭━━━╮
;; ┃╭╮╭╮┃┃╱╱╱╱╱╱╱╱╱╱╱╱╱╱┃╭━╮┃╱╱╱╱╱┃┃┃┃╱╱╱╱╱╱╱╱┃╭━━╯
;; ╰╯┃┃╰┫╰━┳━━┳━╮╭━━┳━━╮┃┃╱┃┣━━┳━━┫┃┃┃╭━━╮╱╱╱╱┃╰━━┳╮╭┳━━┳━━┳━━╮
;; ╱╱┃┃╱┃╭╮┃╭╮┃╭╮┫╭╮┃━━┫┃╰━╯┃╭╮┃╭╮┃┃┃┃┃╭╮┃╭━━╮┃╭━━┫╰╯┃╭╮┃╭━┫━━┫
;; ╱╱┃┃╱┃┃┃┃╭╮┃┃┃┃╰╯┣━━┃┃╭━╮┃╰╯┃╰╯┃╰┫╰┫╰╯┃╰━━╯┃╰━━┫┃┃┃╭╮┃╰━╋━━┃
;; ╱╱╰╯╱╰╯╰┻╯╰┻╯╰┻━━┻━━╯╰╯╱╰┫╭━┻━━┻━┻━┻━━╯╱╱╱╱╰━━━┻┻┻┻╯╰┻━━┻━━╯
;; ╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱┃┃
;; ╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╱╰╯
;;; Code:

;; VM
(defvar vm-directory "~/virtual-machines/")

(defun vm-create-image ()
  "Create qcow2 image."
  (interactive)
  (let ((name (format "%s%s.qcow2" vm-directory (read-string "Name: ")))
	(size (format "%s" (read-string "Size(G): "))))
    (shell-command
     (format "qemu-img create -f qcow2 %s %sG" name size))))


(defun vm-run ()
  "Spawn Virtual Machine."
  (interactive)
  (let ((memory (format "%sG" (read-string "Memory(G): ")))
	(cores (read-string "Cores: "))
	(image (read-file-name "Image: " vm-directory))
	(iso (if (y-or-n-p "Load iso?? ")
		 (read-file-name "ISO: ")
	       nil)))
    (start-process-shell-command
     "virtual-machine" nil
     (format "qemu-system-x86_64 -enable-kvm -m %s -smp %s -hda %s -vga qxl -device virtio-serial-pci -spice port=5784,disable-ticketing -display spice-app %s "
	     memory cores image (when iso (concat "-cdrom " iso))))))

;; MISC

(defun thanos/run-in-background (command)
  "Run COMMAND in the background."
  (let ((command-parts (split-string command "[ ]+")))
    (apply #'call-process `(,(car command-parts) nil 0 nil ,@(cdr command-parts)))))

(defun thanos/emacs-keys ()
  "Swap caps with ctrl."
  (interactive)
  (start-process-shell-command
   "setxkbmap" nil "setxkbmap us -option ctrl:swapcaps"))

(defun thanos/center-buffer ()
  (interactive)
  (set-fringe-mode
   (/ (- (frame-pixel-width)
	 (* 150 (frame-char-width)))
      2)))

(defun thanos/git-clone (repository)
  "Clone git REPOSITORY."
  (interactive (list (read-string "repo: ")))
  (call-process-shell-command
   (concat "git clone " (shell-quote-argument repository)) nil 0))

;; CREATE

(defun create-text-scratch ()
  "Create a scratch buffer."
  (interactive)
  (switch-to-buffer (get-buffer-create "*Text Scratch*"))
  (org-mode))

(defun create-scratch ()
  "Create scratch buffer."
  (interactive)
  (switch-to-buffer (get-buffer-create "*scratch*"))
  (emacs-lisp-mode))

(defvar-keymap thanos/create-map
  :doc "Create custom buffers"
  "t" #'create-text-scratch
  "e" #'create-scratch)

;; THEMING
(defvar wallpapers-dir "~/wallpapers/")

(defun thanos/load-theme ()
  "Disable current theme and load a new one."
  (interactive)
  (let ((theme (intern (completing-read "Theme: " (custom-available-themes)))))
    (disable-theme (car custom-enabled-themes))
    (load-theme theme t)))

(defun thanos/wallpaper-set (image)
  "Set IMAGE as wallpaper, using feh."
  (call-process-shell-command
   (concat "xwallpaper --focus " wallpapers-dir image) nil 0))

(defun thanos/wallpaper-random ()
  "Set random wallpaper."
  (interactive)
  (let ((wallpapers (directory-files "~/wallpapers" nil "^[^.].*")))
    (thanos/wallpaper-set (nth (random (length wallpapers)) wallpapers))))

(defun thanos/wallpaper-select ()
  "Set wallpaper."
  (interactive)
  (let ((wallpaper (completing-read "Choose wallpaper: " (directory-files wallpapers-dir nil "^[^.].*"))))
    (thanos/wallpaper-set wallpaper)))

(defvar-keymap thanos/applications-map
  :doc "Thanos commonly used programs"
  "m" #'mu4e
  "c" #'gptel-send
  "f" #'elfeed
  "e" #'emms-smart-browse
  "i" #'erc-libera
  "t" #'thanos/load-theme
  "w" #'thanos/wallpaper-select
  "C-c" thanos/create-map
  "C-e" #'emms-pause)

(define-key global-map (kbd "C-c a") thanos/applications-map)


(provide 'thanos-commands)
;;; thanos-commands.el ends here