nix-config/home/tmux/default.nix

{ config, pkgs, ... }:

let tmux = "${pkgs.tmux}/bin/tmux";
in {
  programs.tmux = {
    enable = true;
    clock24 = true;
    keyMode = "vi";
    prefix = "C-b";
    shell = "${pkgs.zsh}/bin/zsh";
    extraConfig = ''
      set -g default-terminal "tmux-256color"
      # set-option -sa terminal-overrides ',alacritty:Tc'

      is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
          | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"

      bind -n 'M-h' if-shell "$is_vim" 'send-keys M-h' 'select-pane -L'
      bind -n 'M-j' if-shell "$is_vim" 'send-keys M-j' 'select-pane -D'
      bind -n 'M-k' if-shell "$is_vim" 'send-keys M-k' 'select-pane -U'
      bind -n 'M-l' if-shell "$is_vim" 'send-keys M-l' 'select-pane -R'

      bind-key -T copy-mode-vi 'C-h' select-pane -L
      bind-key -T copy-mode-vi 'C-j' select-pane -D
      bind-key -T copy-mode-vi 'C-k' select-pane -U
      bind-key -T copy-mode-vi 'C-l' select-pane -R

      bind -n 'M-1' 'select-window -t 1'
      bind -n 'M-2' 'select-window -t 2'
      bind -n 'M-3' 'select-window -t 3'
      bind -n 'M-4' 'select-window -t 4'
      bind -n 'M-5' 'select-window -t 5'
      bind -n 'M-6' 'select-window -t 6'
      bind -n 'M-7' 'select-window -t 7'
      bind -n 'M-8' 'select-window -t 8'
      bind -n 'M-9' 'select-window -t 9'

      bind -n M-p select-window -p
      bind -n M-n select-window -n

      bind u \
          capture-pane \; \
          save-buffer /tmp/tmux-buffer \; \
          run-shell 'sh -c "openurl /tmp/tmux-buffer"'

      set -g base-index 1
      setw -g pane-base-index 1

      unbind p
      bind-key -T copy-mode-vi y \
          send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"
      bind-key p run "xsel -o | ${tmux} load-buffer - ; ${tmux} paste-buffer"

      bind c new-window      -c "#{pane_current_path}"
      bind | split-window -h -c "#{pane_current_path}"
      bind - split-window -v -c "#{pane_current_path}"

      set-option -g automatic-rename on

      set -g mouse on

      set -sg escape-time 0

      set -g status-left-length 32
      set -g status-right-length 150

      set -g status-fg '#ebdbb2'
      set -g status-bg '#282828'

      setw -g window-status-separator ' '
      set -g status-left '#[bg=#ebdbb2,fg=#282828,bold] #S #[bg=#282828] '
      #set -g window-status-format "#[fg=#ebdbb2,bg=#a89974] #I #[fg=#a89974,bg=#282828]⮀#[fg=#a89974,bg=#282828] #W "
      set -g window-status-format "#[fg=#ebdbb2,bg=#a89974] #I #[fg=#a89974,bg=#282828]#[fg=#a89974,bg=#282828] #W "
      #set -g window-status-current-format "#[fg=#fbf1c7,bg=#458588,noreverse,bold] #I #[fg=#458588,bg=#282828]⮀#[fg=#fbf1c7,bg=#282828,noreverse,bold] #W "
      set -g window-status-current-format "#[fg=#fbf1c7,bg=#458588,noreverse,bold] #I #[fg=#458588,bg=#282828]#[fg=#fbf1c7,bg=#282828,noreverse,bold] #W "

      set -g status-right \'\'

      set-hook -g 'session-created'  'run-shell -b "if [ \#{session_windows} -eq 1 ]; then ${tmux} set status off; else ${tmux} set status on; fi"'
      set-hook -g 'after-new-window' 'run-shell -b "if [ \#{session_windows} -eq 1 ]; then ${tmux} set status off; else ${tmux} set status on; fi; if [ \#{window_panes} -eq 1 ]; then ${tmux} set pane-border-status off; fi"'
      set-hook -g 'after-kill-pane'  'run-shell -b "if [ \#{session_windows} -eq 1 ]; then ${tmux} set status off; else ${tmux} set status on; fi; if [ \#{window_panes} -eq 1 ]; then ${tmux} set pane-border-status off; fi"'
      set-hook -g 'pane-exited'      'run-shell -b "if [ \#{session_windows} -eq 1 ]; then ${tmux} set status off; else ${tmux} set status on; fi; if [ \#{window_panes} -eq 1 ]; then ${tmux} set pane-border-status off; fi"'
      set-hook -g 'after-split-window' 'run-shell -b "if [ \#{window_panes} -gt 1 ]; then ${tmux} set pane-border-status top; fi"'
      set -g default-command ${pkgs.zsh}/bin/zsh
    '';
  };
}