;;; exwm.el -*- lexical-binding: t; -*-

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

(defun follie/set-wallpaper ()
  "Change the current wallpaper with feh"
  (interactive)
  (start-process-shell-command
   "feh" nil "feh --no-fehbg --bg-fill --randomize ~/Pictures/Wallpapers/*"))

(defun follie/exwm-init-hook ()
  ;; Make workspace 1 the default at startup
  ;;(exwm-workspace-switch-create 1)

  ;; Start pinentry
  (pinentry-start)
  ;; System monitor in minibuffer
  (symon-mode)

  ;; Additional status info on modeline
  ;;(setq display-time-day-and-date t)
  (display-time-mode 1)
  (if (not (equal "Battery status not available" (battery)))
        (display-battery-mode 1))

  ;; Startup apps
  (follie/run-in-background "pipewire")
  (follie/run-in-background "dunst")
  (follie/run-in-background "mpDris2")
  (start-process-shell-command "xsetroot" nil "xsetroot -cursor_name left_ptr"))
  (follie/run-in-background "greenclip daemon")

(defun follie/configure-window-by-class ()
  (pcase exwm-class-name
    ("Komikku" (exwm-floating-toggle-floating)
               (exwm-layout-hide-mode-line))))

(defun follie/update-displays ()
  (follie/run-in-background "~/.local/bin/X11/monitors.sh")
  (follie/set-wallpaper)
  (message "Updated displays: %s"
           (string-trim (shell-command-to-string "xrandr | grep \" connected\" | awk '{print $1}' | sed 's/^/ /' | tr -d '\\n'"))))

(defun follie/exwm-rename-buffer ()
  (exwm-workspace-rename-buffer
   (concat "[" exwm-class-name "] "
           (if (<= (length exwm-title) 30) exwm-title
             (concat (substring exwm-title 0 29))))))

(use-package! exwm
  :config
  ;; Number of workspaces
  (setq exwm-workspace-number 6)

  ;; Extra stuff at startup
  (add-hook 'exwm-init-hook #'follie/exwm-init-hook)

  ;; Update buffer name
  (add-hook 'exwm-update-class-hook #'follie/exwm-rename-buffer)
  (add-hook 'exwm-update-title-hook #'follie/exwm-rename-buffer)

  ;; Force tiling by default
  ;;(setq exwm-manage-force-tiling t)
  ;; Window rules
  (add-hook 'exwm-manage-finish-hook #'follie/configure-window-by-class)

  ;; Automatically move EXWM buffer to current workspace
  (setq exwm-layout-show-all-buffers t)
  ;; Display all buffers in every workspace buffer list
  (setq exwm-workspace-show-all-buffers t)

  ;; Multi monitor
  (require 'exwm-randr)
  (setq exwm-randr-workspace-monitor-plist '(1 "HDMI-1"))
  (add-hook 'exwm-randr-screen-change-hook #'follie/update-displays)
  (exwm-randr-enable)

  ;; System tray on minibuffer
  (require 'exwm-systemtray)
  (setq exwm-systemtray-height 20)
  (exwm-systemtray-enable)

  ;; Automatically send cursor to the selected display
  (setq exwm-workspace-warp-cursor t)
  ;; Focus follows cursor
  (setq mouse-autoselect-window t
        focus-follows-mouse t)

  ;; Keys that always pass through to Emacs in line-mode
  (setq exwm-input-prefix-keys
        '(?\C-x
          ?\C-u
          ?\C-g ;; keyboard-quit
          ?\C-h
          ?\M-x
          ?\M-`
          ?\M-&
          ?\M-:
          ?\C-\M-j))  ;; Buffer list

  ;; Ctrl+q to enable next key to be sent directly
  (define-key exwm-mode-map [?\C-q] 'exwm-input-send-next-key)

  ;; Global key bindings
  (setq exwm-input-global-keys
        `(
        ;; Reset to line-mode (C-c C-k switches to char-mode via exwm-input-release-keyboard)
        ([?\s-r] . exwm-reset)

        ;; Move between windows
        ([s-left] . windmove-left)
        ([s-right] . windmove-right)
        ([s-up] . windmove-up)
        ([s-down] . windmove-down)
        ([?\s-h] . windmove-left)
        ([?\s-l] . windmove-right)
        ([?\s-k] . windmove-up)
        ([?\s-j] . windmove-down)

        ;; Swap window position
        ([s-S-left] . windmove-swap-states-left)
        ([s-S-right] . windmove-swap-states-right)
        ([s-S-up] . windmove-swap-states-up)
        ([s-S-down] . windmove-swap-states-down)
        ([?\s-H] . windmove-swap-states-left)
        ([?\s-L] . windmove-swap-states-right)
        ([?\s-K] . windmove-swap-states-up)
        ([?\s-J] . windmove-swap-states-down)

        ;; Launch applications via shell command
        ([?\s-&] . (lambda (command)
                (interactive (list (read-shell-command "$ ")))
                (start-process-shell-command command nil command)))

        ;; Switch workspace
        ([?\s-w] . exwm-workspace-switch)
        ([?\s-`] . (lambda () (interactive) (exwm-workspace-switch-create 0)))

        ;; 's-N': Switch to certain workspace with Super (Win) plus a number key (0 - 9)
        ,@(mapcar (lambda (i)
                `(,(kbd (format "s-%d" i)) .
                (lambda ()
                        (interactive)
                        (exwm-workspace-switch-create ,i))))
                (number-sequence 0 9))))
  ;; Additional bindings for convenience
  (exwm-input-set-key (kbd "s-s") '+eshell/toggle)
  (exwm-input-set-key (kbd "s-v") '+vterm/here)
  (exwm-input-set-key (kbd "s-SPC") 'counsel-linux-app)
  (exwm-input-set-key (kbd "s-t") 'exwm-floating-toggle-floating)
  (exwm-input-set-key (kbd "s-f") 'exwm-layout-toggle-fullscreen)

  ;; Enable EXWM
  (exwm-enable)
  ;; Work around ido frame
  (require 'exwm-config)
  (exwm-config-ido)
  (ido-mode nil))

;; Edit everything in X windows with Emacs
(use-package! exwm-edit
  :after exwm
  :config
  (exwm-input-set-key (kbd "s-e") #'exwm-edit--compose))

;; xbps but with Emacs
;;(use-package! system-packages
;;  :defer t
;;  :config
;;  (setq system-packages-use-sudo t))

(use-package! symon
  :commands symon-mode
  :custom
  (symon-sparkline-type 'gridded)
  :config
  (symon-display))

;; playerctl status on modeline
;; (use-package! doom-modeline-now-playing
;;   :after doom-modeline
;;   :config
;;   (doom-modeline-now-playing-timer)
;;   ;; Enable almost everywhere
;;   (doom-modeline-def-modeline 'main
;;     '(bar workspace-name window-number modals matches buffer-info remote-host buffer-position word-count parrot selection-info now-playing)
;;     '(objed-state misc-info persp-name battery grip irc mu4e gnus github debug repl lsp minor-modes input-method indent-info buffer-encoding major-mode process vcs checker))
;;   (doom-modeline-def-modeline 'special
;;     '(bar window-number modals matches buffer-info buffer-position word-count parrot selection-info now-playing)
;;     '(objed-state misc-info battery irc-buffers debug minor-modes input-method indent-info buffer-encoding major-mode process))
;;   (doom-modeline-def-modeline 'project
;;     '(bar window-number buffer-default-directory now-playing)
;;     '(misc-info battery irc mu4e gnus github debug minor-modes input-method major-mode process))
;;   (doom-modeline-def-modeline 'vcs
;;     '(bar window-number modals matches buffer-info buffer-position parrot selection-info now-playing)
;;     '(misc-info battery irc mu4e gnus github debug minor-modes buffer-encoding major-mode process))
;;   (doom-modeline-def-modeline 'info
;;     '(bar window-number buffer-info info-nodes buffer-position parrot selection-info now-playing)
;;     '(misc-info buffer-encoding major-mode))
;;   (doom-modeline-def-modeline 'media
;;     '(bar window-number buffer-size buffer-info now-playing)
;;     '(misc-info media-info major-mode process vcs))
;;   (doom-modeline-def-modeline 'message
;;     '(bar window-number modals matches buffer-info-simple buffer-position word-count parrot selection-info now-playing)
;;     '(objed-state misc-info battery debug minor-modes input-method indent-info buffer-encoding major-mode))
;;   (doom-modeline-def-modeline 'pdf
;;     '(bar window-number matches buffer-info pdf-pages now-playing)
;;     '(misc-info major-mode process vcs))
;;   (doom-modeline-def-modeline 'org-src
;;     '(bar window-number modals matches buffer-info-simple buffer-position word-count parrot selection-info now-playing)
;;     '(objed-state misc-info debug lsp minor-modes input-method indent-info buffer-encoding major-mode process checker))
;;   (doom-modeline-def-modeline 'timemachine
;;     '(bar window-number matches git-timemachine buffer-position word-count parrot selection-info now-playing)
;;     '(misc-info minor-modes indent-info buffer-encoding major-mode)))

;; EMMS
(use-package! emms
 :defer t
 :init
 (setq emms-seek-seconds 10)
 :config
 (emms-playing-time -1)
 (emms-mode-line -1)
 ;; Play music with emms directly
 (setq emms-source-file-default-directory "~/Music/"
       emms-info-asynchronously 1
       emms-playlist-buffer-name "*EMMS-Music*"
       emms-source-file-directory-tree-function 'emms-source-file-directory-tree-find
       emms-browser-covers 'emms-browser-cache-thumbnail-async)
 ;; Use mpd backend
 (setq emms-player-mpd-server-name "localhost"
       emms-player-mpd-server-port "6600"
       emms-player-mpd-music-directory "~/Music/")
 (add-to-list 'emms-player-list 'emms-player-mpd)
 (add-to-list 'emms-info-functions
              'emms-info-mpd
              'emms-info-exiftool)
 (map! :map emms-playlist-mode-map
       :localleader
       "d" #'emms-insert-directory))
(use-package! ivy-emms
 :after emms
 :config
 (setq ivy-emms-default-action #'ivy-emms-play-next)
 (setq ivy-emms-default-multi-action #'ivy-emms-play-next-multi))
;;(use-package! emms-mode-line-cycle
;;  :after emms
;;  :config
;;  (emms-playing-time 1)
;;  (emms-mode-line 1)
;;  (emms-mode-line-cycle 1))

;; Duck the web with ivy
(use-package! counsel-web
  :after counsel
  :config
  (setq counsel-web-engine 'duckduckgo)
  (setq counsel-web-search-action #'browse-url)
  (setq counsel-web-search-alternate-action #'browse-url-firefox)
  (setq counsel-web-search-dynamic-update nil)
  (exwm-input-set-key (kbd "s-d") #'counsel-web-search))

;; Function keys
(use-package! desktop-environment
  :after exwm
  :diminish desktop-environment-mode
  :config
  ;; Give me back Super+l
  (progn
      (setf
       (alist-get (elt (kbd "s-l") 0) desktop-environment-mode-map nil t)
       nil)
      (desktop-environment-mode))
  (exwm-input-set-key (kbd "s-x") #'desktop-environment-lock-screen)
  :custom
  ;; Brightness
  (desktop-environment-brightness-get-command "brightnessctl")
  (desktop-environment-brightness-get-regexp "\\([0-9]+%\\)")
  (desktop-environment-brightness-set-command "brightnessctl set %s")
  (desktop-environment-brightness-small-increment "2%+")
  (desktop-environment-brightness-small-decrement "2%-")
  (desktop-environment-brightness-normal-increment "5%+")
  (desktop-environment-brightness-normal-decrement "5%-")
  ;; Volume
  (desktop-environment-volume-get-command "pulsemixer --get-volume")
  (desktop-environment-volume-get-regexp "\\([0-9]+ \\)")
  (desktop-environment-volume-toggle-command "pulsemixer --toggle-mute")
  (desktop-environment-volume-toggle-microphone-command nil)
  (desktop-environment-volume-set-command "pulsemixer --change-volume %s")
  (desktop-environment-volume-small-increment "+2")
  (desktop-environment-volume-small-decrement "-2")
  (desktop-environment-volume-normal-increment "+5")
  (desktop-environment-volume-normal-decrement "-5")
  ;; Screenshot
  (desktop-environment-screenshot-directory "~/Screenshots")
  (desktop-environment-screenshot-command "scrot -m -q 100 '%Y-%m-%d-%T_$wx$h.png'")
  (desktop-environment-screenshot-partial-command
   "scrot -s -f -l style=solid,width=2,color=\"red\" -q 100 '%Y-%m-%d-%T_$wx$h.png'")
  ;; Screenlock
  (desktop-environment-screenlock-command "~/.local/bin/X11/i3lock.sh"))

;; Control dunst
(defun close-desktop-notifications ()
  "Close all current notifications"
  (interactive)
  (start-process-shell-command "dunstctl" nil "dunstctl close-all"))
(defun toggle-desktop-notifications ()
  "Toggle desktop notification on/off"
  (interactive)
  (start-process-shell-command "dunstctl" nil "dunstctl set-paused toggle"))

;; Clipboard management
(defun greenclip--select-item (str)
  "Copy selected item to clipboard"
  (setq str (replace-regexp-in-string "\u00a0" "\n" str))
  ;; (kill-new str) ;; Add the item to Emacs kill ring as well
  (condition-case nil
      (cond
       ((fboundp 'ns-set-pasteboard)
        (ns-set-pasteboard str))
       ((fboundp 'gui-set-selection)
        (gui-set-selection 'CLIPBOARD str))
       (t
        (error "No clipboard support")))
    (error
     (with-temp-buffer
      (insert str)
      (if (file-executable-p "xsel")
          (call-process-region (point-min) (point-max) "xsel" nil nil nil "--clipboard" "--input")
        (call-process-region (point-min) (point-max) "xclip" nil nil nil "-selection clipboard" "--input"))))))
(defun ivy-greenclip ()
  "Select an item from X clipboard history"
  (interactive)
  (let* ((history (split-string (shell-command-to-string "greenclip print") "[\r\n]+")))
    (ivy-read "Clipboard item: "
              history
              :action (lambda (str)
                        (greenclip--select-item str)))))
(defun greenclip-clear-history ()
  "Clear X clipboard history"
  (interactive)
  (start-process-shell-command "greenclip" nil "pkill greenclip && greenclip clear")
  (follie/run-in-background "greenclip daemon"))