# Common configuration for Tmux users

{ config, pkgs, ... }:

{

  programs = {
    tmux = {   # Terminal multiplexer required by byobu
      enable = true;
      aggressiveResize = true;
      clock24 = true;
      extraConfig = ''
        POWERLINE_COMMAND="/run/current-system/sw/bin/powerline"
        POWERLINE_CONFIG_COMMAND="/run/current-system/sw/bin/powerline-config"
        run-shell "/run/current-system/sw/bin/powerline-daemon -q"
        source /run/current-system/sw/share/tmux/powerline.conf

        # Plugins
        set -g @plugin 'tmux-plugins/tmux-resurrect'
        set -g @plugin 'tmux-plugins/tmux-continuum'

        # Bind home and end keys:
        bind-key -n Home send Escape "OH"
        bind-key -n End send Escape "OF"

        ## COLORSCHEME: gruvbox dark
        set-option -g status "on"

        # default statusbar color
        set-option -g status-style bg=colour237,fg=colour223 # bg=bg1, fg=fg1

        # default window title colors
        set-window-option -g window-status-style bg=colour214,fg=colour237 # bg=yellow, fg=bg1

        # default window with an activity alert
        set-window-option -g window-status-activity-style bg=colour237,fg=colour248 # bg=bg1, fg=fg3

        # active window title colors
        set-window-option -g window-status-current-style bg=red,fg=colour237 # fg=bg1

        # pane border
        set-option -g pane-active-border-style fg=colour250 #fg2
        set-option -g pane-border-style fg=colour237 #bg1

        # message infos
        set-option -g message-style bg=colour239,fg=colour223 # bg=bg2, fg=fg1

        # writing commands inactive
        set-option -g message-command-style bg=colour239,fg=colour223 # bg=fg3, fg=bg1

        # pane number display
        set-option -g display-panes-active-colour colour250 #fg2
        set-option -g display-panes-colour colour237 #bg1

        # clock
        set-window-option -g clock-mode-colour colour109 #blue

        # bell
        set-window-option -g window-status-bell-style bg=colour167,fg=colour235 # bg=red, fg=bg

        # focus
        set-option -g focus-events on

        ## Theme settings mixed with colors (unfortunately, but there is no cleaner way)
        set-option -g status-justify "left"
        set-option -g status-left-style none
        set-option -g status-left-length "80"
        set-option -g status-right-style none
        set-option -g status-right-length "80"
        set-window-option -g window-status-separator ""

        set-option -g status-left "#[fg=colour248, bg=colour241] #S #[fg=colour241, bg=colour237, nobold, noitalics, nounderscore]"
        set-option -g status-right "#[fg=colour239, bg=colour237, nobold, nounderscore, noitalics]#[fg=colour246,bg=colour239] %Y-%m-%d  %H:%M #[fg=colour248, bg=colour239, nobold, noitalics, nounderscore]#[fg=colour237, bg=colour248] #h "

        set-window-option -g window-status-current-format "#[fg=colour237, bg=colour214, nobold, noitalics, nounderscore]#[fg=colour239, bg=colour214] #I #[fg=colour239, bg=colour214, bold] #W #[fg=colour214, bg=colour237, nobold, noitalics, nounderscore]"
        set-window-option -g window-status-format "#[fg=colour237,bg=colour239,noitalics]#[fg=colour223,bg=colour239] #I #[fg=colour223, bg=colour239] #W #[fg=colour239, bg=colour237, noitalics]"

      '';
      keyMode    = "vi";
      newSession = true;
      shortcut   = "a";
      terminal   = "screen-256color";
    };
  };

  environment.systemPackages = with pkgs; [
    python36Packages.powerline    # Prompt enhancer
    tmuxPlugins.tmux-fzf
    tmuxPlugins.resurrect
    tmuxPlugins.continuum
  ];

}